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WO2023001007A1 - 成像调整装置及方法、可穿戴设备、存储介质 - Google Patents

成像调整装置及方法、可穿戴设备、存储介质 Download PDF

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Publication number
WO2023001007A1
WO2023001007A1 PCT/CN2022/104878 CN2022104878W WO2023001007A1 WO 2023001007 A1 WO2023001007 A1 WO 2023001007A1 CN 2022104878 W CN2022104878 W CN 2022104878W WO 2023001007 A1 WO2023001007 A1 WO 2023001007A1
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WO
WIPO (PCT)
Prior art keywords
imaging
user
eyes
adjustment
photoelectric conversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/104878
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English (en)
French (fr)
Inventor
诸健文
訾峰
高峰
孙宾华
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Publication date
Application filed by BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US18/276,653 priority Critical patent/US20240118539A1/en
Publication of WO2023001007A1 publication Critical patent/WO2023001007A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
    • A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0176—Head mounted characterised by mechanical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B2027/0178—Eyeglass type

Definitions

  • Embodiments of the present disclosure relate to, but are not limited to, the field of smart wearable technology, and in particular, relate to an imaging adjustment device and method, a wearable device, and a storage medium.
  • VR Virtual Reality, virtual reality
  • AR Augmented Reality, augmented reality
  • Various audio-visual entertainment equipment The fun is greatly improved.
  • the birth of VR/AR eye protection device enables patients with pseudomyopia to use VR or AR equipment for entertainment while also performing myopia correction.
  • the VR/AR eye protection device has brought good news to myopia patients, the basic version of the VR/AR eye protection device still has defects in the distance adjustment strategy, which makes the correction effect of the VR/AR eye protection device great. discount.
  • an embodiment of the present disclosure provides an imaging adjustment device, which is applied to adjust the imaging surface of an imaging system composed of an optical system and a user's eyes, including: a light emitting device, a photoelectric conversion device, a control device, and a driving device;
  • the light emitting device is configured to emit a first light so that the first light irradiates the user's eyes;
  • the photoelectric conversion device is configured to perform photoelectric conversion based on the second light reflected by the user's eyes to generate an electrical signal, and provide the generated electrical signal to the control device;
  • the control device is configured to judge the user's eye state based on the electrical signal, and control the driving device to work according to the user's eye state;
  • the driving device is configured to adjust the position of the imaging plane of the imaging system under the control of the control device.
  • the wavelength of the first light emitted by the light emitting device is within the spectral response range of the photoelectric conversion device.
  • the light emitting device and the photoelectric conversion device are arranged on the side of the optical imaging system, so as to avoid blocking the optical path of the optical imaging system.
  • the imaging adjustment device further includes a comparison device
  • the photoelectric conversion device is configured to provide the generated electrical signal to the comparison device;
  • the comparison device is configured to compare the electrical signal generated by the photoelectric conversion device with a preset electrical signal, generate a comparison result signal, and send the comparison result signal to the control device;
  • the control device is configured to control the driving device to work according to the comparison result signal.
  • the imaging adjustment device further includes a filtering device and a signal amplification device
  • the filtering device is connected to the photoelectric conversion device and the signal amplification device, and is configured to filter the electrical signal generated by the photoelectric conversion device;
  • the signal amplifying device is connected to the filtering device and the comparing device, and is configured to amplify the filtered signal and provide the amplified signal to the comparing device.
  • the photoelectric conversion device includes a photosensitive triode and a signal conversion resistor
  • the collector of the photosensitive transistor is connected to the signal conversion resistor, and the connection node between the photosensitive transistor and the signal conversion resistor is used as the output terminal of the photoelectric conversion device.
  • the driving device includes an object distance adjusting motor
  • the object distance adjusting motor is configured to adjust the position of the imaging lens in the optical system under the control of the control device.
  • the imaging adjustment device further includes an eye state acquisition device
  • the eye state acquiring device is configured to acquire eye state information
  • the control device is configured to control the driving device to work based on the electrical signal and the eye state information.
  • an embodiment of the present disclosure also provides a wearable device, including an optical system and the above-mentioned imaging adjustment device, where the imaging adjustment device is configured to adjust the imaging plane of the imaging system formed by the optical system and the user's eyes.
  • the wearable device also includes a screen
  • the display surface of the screen faces the optical system.
  • the imaging adjusting device adjusts the imaging plane of the imaging system by adjusting the position of the imaging lens in the optical system.
  • the optical system includes a first imaging lens and a second imaging lens
  • the first imaging lens is arranged between the eye and the second imaging lens
  • the second imaging lens is arranged between the first imaging lens and the screen;
  • the imaging adjustment device is configured to adjust the position of the first imaging lens or the second imaging lens, thereby adjusting the position of the imaging plane of the imaging system formed by the optical system and the eye.
  • an embodiment of the present disclosure also provides an imaging adjustment method, which is applied to the imaging adjustment device described in any one of the above embodiments, and the method includes:
  • the second light is the light reflected by the user's eyes after the first light is irradiated on the user's eyes;
  • the position of the imaging surface of the imaging system is adjusted according to the state of the user's eyes.
  • the method also includes:
  • the initial position of the imaging surface of the imaging system is set, and the initial position is matched with the user's initial vision.
  • the user's eye state includes: the user's squinting state, the user's eye-opening state, and the user's visual acuity evaluation result.
  • the method further includes: adjusting the position of the imaging surface according to a preset period according to the vision evaluation result.
  • the setting the initial position of the imaging plane of the imaging system includes: when a trigger condition is met, setting the initial position of the imaging plane of the imaging system, wherein the trigger condition includes one of the following Kind or more:
  • the use time is greater than or equal to the preset adjustment period
  • the time interval from the last adjustment is greater than or equal to N times the preset adjustment period, N ⁇ 1;
  • the determined eye state is a preset eye state.
  • the optical system includes a first imaging lens and a second imaging lens; the imaging system further includes a screen, the first imaging lens is located between the screen and the user's eyes, and the second an imaging lens is located between the first imaging lens and the screen;
  • the adjusting the distance between the imaging plane of the imaging system and the user's eyes includes:
  • the adjusting the position of the imaging plane of the imaging system according to the state of the user's eyes includes: when a trigger condition is met, adjusting the position of the imaging plane of the imaging system according to the state of the user's eyes, wherein,
  • the trigger conditions include one or more of the following:
  • the use time is greater than or equal to the preset adjustment period
  • the time interval from the last adjustment is greater than or equal to N times the preset adjustment period, N ⁇ 1;
  • the determined eye state is a preset eye state.
  • an embodiment of the present disclosure also provides a non-transitory computer-readable storage medium, the storage medium is configured to store computer program instructions, wherein, when the computer program instructions run, the computer program instructions can implement any of the above-mentioned image adjustment method.
  • FIG. 1 is a schematic structural diagram of an adjustment device for an imaging plane provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of an application structure of an adjustment device for an imaging surface provided by an embodiment of the present disclosure
  • Fig. 3 is a schematic structural diagram of a light emitting device provided by an embodiment of the present disclosure.
  • Figures 4a-4c are structural schematic diagrams of light emitting devices and photoelectric conversion devices provided by embodiments of the present disclosure.
  • FIG. 5 is a schematic structural diagram of an imaging adjustment device provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of an imaging adjustment device provided by an embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of an application structure of an imaging adjustment device provided by an embodiment of the present disclosure.
  • FIG. 8 is a voltage timing diagram of a photoelectric conversion device received by a comparison device provided by an embodiment of the present disclosure
  • FIG. 9 is a timing diagram of the output level of the comparison device to the control device provided by an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of an imaging adjustment device provided by an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a wearable device provided by an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a wearable device provided by an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of an application structure of a wearable device provided by an embodiment of the present disclosure.
  • 15a-15c are schematic diagrams of another optical path adjustment provided by an embodiment of the present disclosure.
  • 16a-16c are schematic diagrams of another optical path adjustment provided by an embodiment of the present disclosure.
  • 17a-17c are schematic diagrams of another optical path adjustment provided by an embodiment of the present disclosure.
  • FIG. 18 is a flowchart of an imaging adjustment method provided by an embodiment of the present disclosure.
  • FIG. 19 is a schematic diagram of an application structure of a wearable device provided by an embodiment of the present disclosure.
  • FIG. 20 is a flowchart of an imaging adjustment method provided by an embodiment of the present disclosure.
  • FIG. 21 is a flowchart of another imaging adjustment method provided by an embodiment of the present disclosure.
  • connection should be interpreted in a broad sense.
  • it can be a fixed connection, or it can be a detachable connection, or an integral connection; it can be a mechanical connection, or it can be an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate piece, and it can be internal to the two components connected.
  • the correction strategy of VR or AR eye protection devices is based on the adjustment distance correction strategy preset according to the patient's myopia condition on the one hand; on the other hand, it is based on the user's manual active adjustment.
  • these two correction strategies ignore two facts.
  • One is that the myopia of the patient changes dynamically, and the preset distance adjustment correction strategy will no longer be suitable for the patient's eyes after a period of time, and will instead cause damage to the patient's vision;
  • an embodiment of the present disclosure provides an imaging adjustment device 10 , which is applied to adjust an imaging plane of an imaging system composed of an optical system and an eye of a user.
  • the imaging adjustment device 10 includes: a light emitting device 101, a photoelectric conversion device 102, a control device 103, and a driving device 104;
  • the light emitting device 101 is configured to emit a first light so that the first light irradiates the user's eyes;
  • the photoelectric conversion device 102 is configured to perform photoelectric conversion based on the second light reflected by the user's eyes to generate an electrical signal, and provide the generated electrical signal to the control device 103;
  • the control device 103 is configured to judge the state of the eye based on the electric signal, and control the operation of the driving device 104 according to the state of the user's eye;
  • the driving device 104 is configured to adjust the position of the imaging surface of the imaging system under the control of the control device 103 .
  • the imaging adjustment device can judge the state of the eye based on the electric signal generated by the photoelectric conversion of the second light reflected by the user's eye, and adjust the imaging surface of the imaging system composed of the optical system and the eye according to the state of the eye. ;
  • the position of the imaging surface of the imaging system can be adjusted through the user's eye state such as squinting or opening the eyes, so that the user's vision can be monitored in time and automatically, so that the position of the imaging surface can be adjusted in time and automatically according to the monitoring results, and the user's usability can be improved. comfort.
  • myopia will subconsciously squint to see objects clearly when their vision suddenly becomes blurred.
  • squinting can reduce the area of external light entering the cornea, thereby causing a small hole to focus;
  • the contraction of the orbicularis oculi muscle can make the eyes exert a certain pressure on the cornea, forcing the cornea to change the refractive plane, thereby , so that the angle of refraction of the light entering the eye changes, and it forms a focus when it reaches the retina.
  • the vision when the vision is zoomed in, it will become blurred, and they will squint subconsciously.
  • the user's eyesight can be monitored by monitoring the user's eyes open or squinted, or the user's comfort level can be monitored.
  • the user squints it means that the current imaging surface position is not suitable and the user is uncomfortable.
  • the eye is closed it means that the current imaging surface is in a suitable position, and relatively speaking, the user is more comfortable.
  • the embodiment of the present disclosure detects the user's eye state of squinting or opening according to the magnitude of the electrical signal of the photoelectric conversion device.
  • the imaging adjustment device provided by the embodiments of the present disclosure can be applied to glasses (such as nearsighted glasses, farsighted glasses, 3D glasses, etc.), vision correction equipment, head-mounted equipment (such as helmets, VR eye protection devices, AR eye protection devices, other VR Or AR equipment, etc.) and the imaging plane position adjustment of the imaging system composed of eyes, but not limited to these equipment and scenes.
  • glasses such as nearsighted glasses, farsighted glasses, 3D glasses, etc.
  • vision correction equipment such as nearsighted glasses, farsighted glasses, 3D glasses, etc.
  • head-mounted equipment such as helmets, VR eye protection devices, AR eye protection devices, other VR Or AR equipment, etc.
  • the imaging plane position adjustment of the imaging system composed of eyes but not limited to these equipment and scenes.
  • the power of the glasses can be adjusted by adjusting the position of the imaging surface.
  • the power of the original lenses is not suitable, there is no need to reconfigure the glasses, which greatly reduces the waste of lenses.
  • the imaging surface adjustment device provided by the embodiment of the present disclosure is installed in the helmet, which can monitor and correct vision in real time without wearing glasses.
  • the eye state includes an eye open state and a squinted eye state, or the eye state is a user vision evaluation result.
  • the result of the user's visual acuity evaluation can be obtained by using the imaging adjustment device 10 to evaluate the user's visual acuity.
  • the visual acuity evaluation result can be the user's visual acuity limit obtained according to the monitored user's eye state, which can be referred to later
  • the imaging adjustment method will not be described in detail here.
  • the imaging adjustment device uses the imaging adjustment device 10 to adjust the imaging plane of the imaging system composed of the optical system and the eye according to the state of the user's eyes, so that the imaging system composed of the eye and the optical system can be adjusted in a timely and automatic manner. Adjusting distance or focusing can improve user comfort. Embodiments of the present disclosure may be used to correct a user's vision.
  • the position of the imaging surface of the imaging system composed of the optical system and the eyes can be adjusted in real time according to the state of the user's eyes open or squinted, so as to adapt to the power of the user's current eyes. It is equivalent to monitoring and/or correcting vision in real time.
  • control device 103 in the imaging plane adjustment device 10 can set a preset time, and trigger the imaging adjustment device 10 to adjust the position of the imaging plane after the preset time is reached. Equivalent to regular vision monitoring and/or correction.
  • the control device 103 in the imaging plane adjustment device 10 can set a preset time, and after the preset time is reached, the imaging adjustment device 10 is triggered to adjust the position of the imaging plane to obtain a visual acuity assessment As a result, the position of the imaging plane is adjusted according to the results of the visual acuity assessment. Equivalent to periodic vision evaluations and/or corrections.
  • the driving device 104 adjusts the position of the imaging surface on the side of the optical system close to the eye under the control of the control device 103 , so that the adjusted position of the imaging surface falls on the retina of the eye as much as possible.
  • the wavelength of the first light emitted by the light emitting device 101 is within the spectral response range of the photoelectric conversion device 102, so that the photoelectric conversion device 102 can perform photoelectric conversion based on the second light.
  • the spectral range of the light-emitting device 101 and the photoelectric conversion device 102 should not fall into the spectral range of the light received by the eyes when observing things, and will not cause damage to the eyes.
  • visible light can be avoided
  • the spectral range of the infrared light is selected (the wavelength range is 760nm-1400nm), for example, the light emitting wavelength of the light emitting device 101 and the response wavelength of the photoelectric conversion device are both 850nm.
  • the wavelength range is 760nm-1400nm
  • the light-emitting device 101 selects an infrared light-emitting diode
  • the corresponding photoelectric conversion device 102 selects a photosensitive diode or a photosensitive triode that senses infrared light
  • the light-emitting device 101 selects an infrared light-emitting triode
  • the corresponding photoelectric conversion device 102 selects an infrared light Photosensitive diode or photosensitive triode.
  • the photoelectric conversion device 102 includes a phototransistor and a signal conversion resistor; the collector of the phototransistor is connected to the electrical signal conversion resistor R1, and the phototransistor and the signal conversion resistor R1
  • the connection node serves as an output terminal of the photoelectric conversion device 102 .
  • the function of the signal conversion resistor R1 is to convert the current signal generated by the photoelectric conversion of the photosensitive triode into a voltage signal.
  • the light emitting device 101 can emit light under the control of the control device 103 .
  • the photoelectric conversion device 102 can perform photoelectric conversion under the control of the control device 103 .
  • Another feasible implementation is to set a first switch for controlling the photoelectric conversion device 102 to control the photoelectric conversion device 102 to perform photoelectric conversion, and set a second switch for controlling the light emitting device 101 to control the light emitting device 101 to emit light.
  • the first switch and the second switch can be the same switch, and the photoelectric conversion device 102 and the light emitting device start to work at the same time after the switch is closed, or can be set separately.
  • the light emitting device 101 and the photoelectric converter 102 are arranged on the side of the optical system 20 to avoid blocking the light path of the optical system 20 .
  • FIG. 2 is a schematic diagram of an application of the imaging adjustment device 10 , including a structural diagram among the user's eyes, the optical system 20 , and the imaging adjustment device 10 .
  • the light emitting device 101 and the photoelectric conversion device 102 can be arranged around the optical system 20, and the relative positions of the light emitting device 101 and the photoelectric conversion device 102 are not limited thereto, as long as they emit light
  • the first light emitted by the device 101 can be irradiated to the user's eyes, and the second light reflected by the user's eyes can be irradiated to the photoelectric conversion device 102 .
  • a plurality of light emitting devices 101 may be arranged in the peripheral area 201 of the optical system 20 , and the plurality of light emitting devices 101 may be arranged around the optical system 20 .
  • FIG. 3 it is a schematic structural diagram of disposing a plurality of light emitting devices 101 in the peripheral area 201 of the optical system 20 .
  • one photoelectric conversion device 102 may be provided, or multiple photoelectric conversion devices 102 may be provided.
  • a plurality of photoelectric conversion devices 102 may be provided.
  • a plurality of photoelectric conversion devices 102 may be arranged in the peripheral area 201 of the optical system 20 .
  • the arrangement of the photoelectric conversion device 102 and the light emitting device 101 is not limited to the structure shown in FIG. 4a; as shown in FIG. 4b and FIG.
  • the position of the photoelectric conversion device 102 and the arrangement of the light emitting device 101 are not limited, as long as the corresponding functions can be realized.
  • the photoelectric conversion device 102 and the light emitting device 101 can be arranged in the peripheral area 201 of the optical system 20 as shown in FIGS. On other devices, as long as the corresponding functions can be realized.
  • the photoelectric conversion device 102 and the light emitting device 101 can be arranged on the frame of the glasses, as long as the light path of the optical system 20 can be avoided and the corresponding functions can be realized at the same time. .
  • the fixing method of the optical system 20 can be set in combination with the application scene and equipment. If it is applied to glasses, the optical system 20 can be fixed on the frame; Inside the wearable.
  • the positions of the driving device 104 and the control device 103 in the embodiment of the present disclosure are not limited, as long as the corresponding functions can be realized without blocking the optical path transmission.
  • the light emitting device 101 may be connected with the control device 103, and the control device may provide electric energy thereto, or other power supply equipment may provide electric energy thereto.
  • the imaging adjustment device 10 further includes a comparison device 105;
  • the photoelectric conversion device 101 is configured to provide the generated electrical signal to the comparison device 105;
  • the comparison device 105 is configured to compare the electrical signal generated by the photoelectric conversion device 101 with a preset electrical signal, generate a comparison result signal, and send the comparison result signal to the control device 103;
  • the control device 103 is configured to control the driving device 104 to work according to the comparison result signal.
  • a signal enhancement device in order to enhance the intensity of the electrical signal output by the photoelectric conversion device 102 so that the comparison device 105 can accurately obtain the comparison result signal, a signal enhancement device may also be provided.
  • the signal enhancing device may include a filtering device 106 and a signal amplifying device 107;
  • the filtering device 106 is connected to the photoelectric conversion device 102 and the signal amplification device 107, and is configured to filter the electrical signal generated by the photoelectric conversion device 102;
  • the signal amplifying device 107 is connected with the filtering device 106 and the comparing device 105 , and is configured to amplify the filtered signal and provide the amplified signal to the comparing device 105 .
  • the comparing means 105, the filtering means 106 and the signal amplifying means 107 may adopt circuits capable of realizing corresponding functions in the related art.
  • FIG. 7 it is another application schematic diagram of the imaging adjustment device 10 , which is another structural schematic diagram including the user's eyes, the optical system 20 , and the imaging adjustment device 10 .
  • the electrical signal output by the photosensitive triode in the photoelectric conversion device 102 is filtered by the filter device 106 and amplified by the signal amplifier 107 in sequence, and then the comparison device 105 is used to compare the signals and output the comparison result signal to the control device 103 . For example, if the voltage signal output by the phototransistor in the photoelectric conversion device 102 is filtered and amplified, and the signal output to the comparison device 105 is higher than the preset electrical signal, the comparison result signal output by the comparison device 105 to the control device 103 is a high voltage.
  • the voltage in Table 1 is the photovoltage generated by the photoelectric conversion device 102 through photoelectric conversion, which is filtered and amplified and then transmitted to the control comparison device.
  • 680mV is the preset electrical signal set by the comparison device 105 (the preset electrical signal can be called is the threshold voltage), wherein the threshold voltage can be set according to the actual situation, and is not limited to 680mV.
  • FIG. 9 shows the logic values corresponding to the comparison result signal sent by the comparison device 105 to the control device 103 at different time periods.
  • the comparison device 105 determines that the user's eye state is squinting based on the comparison result signal with a logic value of 1; at t1-t2, t3-t4, During t5-t6, t7-t8, t9-t10 period, the voltage received by the input terminal of the comparison device 105 is lower than the threshold voltage, the comparison device 105 generates a comparison result signal with a logic value of 0, and sends the comparison result signal with a logic value of 0 For the control device 103, the control device 103 judges that the user's eye state is open eyes based on the comparison result
  • the comparison device 105 may be a voltage comparator, and correspondingly, the signal obtained after the photoelectric conversion by the photoelectric conversion device 102 is a voltage signal.
  • the comparison result signal is obtained by the comparison device 105 according to the threshold voltage and the received voltage, wherein the voltage signal obtained after the photoelectric conversion device 102 performs photoelectric conversion is filtered and amplified and then output to the comparison device
  • the voltage input end of 105, what the reference end input of comparison device 105 is threshold voltage (preset electric signal is threshold voltage) compares the threshold voltage of reference end input with the voltage that input end receives, when the input of comparison device 105
  • the comparison result signal is output to the control device 103 as logic value 1
  • the comparison result signal is output to the control device 103.
  • the resulting signal is logic value 0.
  • the comparison device 105 is not limited to be a voltage comparator, or may be a current comparator, and the final comparison is a current value; correspondingly, the output of the photoelectric conversion device 102 to the comparison device 105 is a current signal.
  • the imaging adjustment device may further include an eye state acquisition device;
  • the eye state acquiring device is configured to acquire eye state information
  • the control device 103 is configured to control the operation of the drive device 104 based on the electric signal and eye state information.
  • the eye state information acquired by the eye state acquisition device includes eye open state information, squint state information, eye close state information, blink state information, and the like.
  • the eye state acquisition device may be an eye state acquisition device in the related art, which will not be described in detail here.
  • the function of the eye state obtaining device is to obtain the user's eye state information, and the control device 103 can assist in judging whether the user's eyes are open or squinted based on the eye state information.
  • the eye state information provided by the eye state acquisition device is used to assist in judging the eye state, so as to prevent the control device 103 from misjudging the blink state as a squint state, thereby avoiding wrongly controlling the driving device 104 to perform related operations .
  • the above-mentioned eye state acquisition device may be a camera device, and the user's eye state information is acquired through the camera device, and the control device 103 controls the driving device 104 to work based on the eye state information and electrical signals.
  • the camera device can acquire the user's eye state information by taking pictures or recording videos.
  • the above-mentioned imaging adjustment device 10 may be set on an eye-tracking device of the related art, so that the eye-tracking device has the functions of the above-mentioned imaging adjustment device 10 .
  • a preset voltage can be set, and the second light reflected by the light-emitting device 101 when the eyes are closed passes through the photoelectric conversion device 102
  • the converted electrical signal is higher than the preset voltage, it is determined that the eyes are closed, not squinting. Or it can be judged whether the eyes are squinted or closed by combining with the eye state acquisition device.
  • the state of the eye can be determined according to the electrical signal and the duration or times of receiving the electrical signal. For example, when it is determined that the duration of the squinting state is maintained for more than a preset duration or a preset number of times, it is determined that the eye state is a squinting state, not a blinking state.
  • the driving device 104 includes an object distance adjustment motor configured to adjust the position of the imaging lens in the optical system under the control of the control device 103 .
  • the object distance adjustment motor can be configured to adjust the position of the imaging lens L2 in the optical system 20 .
  • the object distance adjusting motor may be configured to adjust the position of the optical lens L1 , which is not limited here.
  • Embodiments of the present disclosure also provide a wearable device, including an optical system and the imaging adjustment device 10 described in any one of the above embodiments.
  • the imaging adjustment device 10 is configured to adjust the imaging surface of the imaging system composed of the optical system and the user's eyes.
  • FIG. 11 it is a block diagram of an exemplary module composition of a wearable device.
  • the optical system 20 is connected to the driving device 104 in the imaging surface adjustment device 10 , and can adjust the position of the imaging surface under the driving of the driving device 104 .
  • the wearable device may be a VR or AR device (including a VR or AR eye protection device), a helmet, glasses, and the like.
  • the wearable device can be set as a closed structure, so that the light-emitting device can reflect multiple times in the closed space, so that the photoelectric conversion device 102 in the imaging adjustment device 10 can receive more second light, so that Increases the electrical signal generated by photoelectric conversion.
  • the wearable device provided by the embodiment of the present disclosure can adjust the imaging surface of the imaging system composed of the optical system and the eye according to the state of the user's eyes through the imaging adjustment device 10, so that the imaging surface of the imaging system composed of the eye and the optical system can be adjusted in time and automatically. Adjusting distance or focusing can improve user comfort. Embodiments of the present disclosure may be used to correct a user's vision.
  • the position of the imaging surface of the imaging system composed of the optical system and the eyes can be adjusted in real time according to the state of the user's eyes open or squinted, so as to adapt to the power of the user's current eyes. It is equivalent to monitoring and/or correcting vision in real time.
  • control device 103 in the imaging plane adjustment device 10 can set a preset time, and trigger the imaging adjustment device 10 to adjust the position of the imaging plane after the preset time is reached. Equivalent to regular vision monitoring and/or correction.
  • the control device 103 in the imaging plane adjustment device 10 can set a preset time, and after the preset time is reached, the imaging adjustment device 10 is triggered to adjust the position of the imaging plane to obtain a visual acuity assessment As a result, the position of the imaging plane is adjusted according to the result of the visual acuity assessment. Equivalent to periodic vision evaluations and/or corrections.
  • the wearable device may further include a screen 21 ; the display surface of the screen 21 faces the optical system 20 .
  • the screen 21 is arranged on the side of the optical system 20 away from the eyes of the wearer of the wearable device.
  • FIG. 13 which is a schematic diagram of an application scenario of a wearable device
  • the picture displayed on the screen 21 enters the eyes of the wearer of the wearable device through the optical system 20 .
  • the fixing method of the screen 21 can be set according to actual application scenarios, as long as its functions can be realized, and there is no limitation here.
  • the imaging adjustment device 10 adjusts the position of the imaging plane on the eye side of the imaging system composed of the eye and the optical system 20 by adjusting the position of the imaging lens in the optical system 20 .
  • Figure 14a, Figure 14b, and Figure 14c are a schematic diagram of imaging adjustment (that is, the position adjustment of the imaging surface).
  • the optical system 20 includes an imaging lens L1, 30 represents the eyeball, 31 represents the retina, and 32 represents the lens.
  • the intersection point after the light converges through the lens L1 and the lens 32 falls in front of the retina 31; in Figs. The last intersection point falls on the retina 31.
  • the dotted line part in Fig. 14b is the position of lens L1 in Fig. 14a and the light propagation path.
  • Fig. 14c is after removing the lens and light propagation path of the dotted line part in Fig. 14b Schematic diagram of the light path.
  • the position of the imaging lens (such as the imaging lens L1) in the optical system 20
  • the position of the imaging surface of the imaging system formed by the object through the optical system 20 and the eye can be adjusted on the side close to the eye. It is possible to make the position of the image plane fall on the retina of the eye.
  • the optical system 20 can include two imaging lenses L1 and L2, and the distance M between the imaging lens L2 or L1 and the screen 21 can be adjusted to adjust the distance between the optical system 20 and the eye.
  • Fig. 15a-Fig. 15c are schematic diagrams showing that the position of imaging lens L1 remains unchanged and only the position of imaging lens L2 is adjusted.
  • the driving device 104 in the imaging adjustment device 10 adjusts the distance between the imaging lens L2 and the screen 21 under the control of the control device 103 The distance between them is used to adjust the position of the imaging surface of the imaging system.
  • Figure 15b is a schematic diagram of optical path transmission after the distance between the imaging lens L2 and the screen 21 in Figure 15a is adjusted from M1 to M2, and the dotted line in Figure 15b corresponds to Figure 15a
  • FIG. 15c is a schematic diagram of the light path with the dotted line in FIG. 15b removed.
  • the driving device 104 can either adjust the position of the imaging lens L1, or the driving device 104 can simultaneously adjust the positions of the imaging lenses L1 and L2.
  • the setting method is not limited here, as long as the intended function can be realized.
  • the number of imaging lenses in the optical system 20 is not limited to one or two as shown in FIG. 14-FIG. 15 , and multiple imaging lenses can be set according to actual needs.
  • the imaging lens in the optical system 20 is not limited to being a convex lens, and a concave lens (as shown in FIGS. It is limited, as long as the corresponding functions can be realized.
  • the position of one or more lenses can be adjusted according to actual needs, which is not limited here.
  • the optical system includes a first imaging lens and a second imaging lens
  • the first imaging lens is arranged between the eye and the second imaging lens
  • the second imaging lens is arranged between the first imaging lens and the screen 21;
  • the imaging adjustment device 10 is configured to adjust the position of the first imaging lens or the second imaging lens, thereby adjusting the position of the imaging plane of the imaging system composed of the optical system and the eye.
  • the first imaging lens is L1
  • the second imaging lens is L2
  • the imaging adjustment device 10 adjusts the position of the imaging plane of the imaging system by adjusting the position of the second imaging lens L2.
  • An embodiment of the present disclosure also provides an imaging adjustment method, which is applied to adjust the imaging plane of the imaging system composed of the optical system and the user's eyes, as shown in FIG. 18 , including:
  • Step S1 emitting the first light so that the first light hits the user's eyes
  • Step S2 judging the state of the user's eyes based on the electrical signal generated after the photoelectric conversion of the second light, which is the light reflected by the user's eyes after the first light irradiates the user's eyes;
  • Step S3 adjusting the position of the imaging plane of the imaging system according to the state of the user's eyes.
  • the imaging adjustment method provided by the embodiment of the present disclosure can be applied to the above imaging adjustment device, or can be applied to the above-mentioned wearable device.
  • the imaging adjustment method provided by the embodiments of the present disclosure can judge the state of the eye based on the electrical signal generated by the photoelectric conversion of the second light reflected by the user’s eye, and adjust the imaging surface of the imaging system composed of the optical system and the eye according to the state of the eye ;According to the user's eye state, the user's vision can be monitored in real time, and the position of the imaging surface of the system can be adjusted by squinting or opening the eye state, which can automatically adjust the distance or focus in real time, bringing users a better experience .
  • the state of the user's eyes is judged based on the electrical signal, and the position of the imaging surface of the imaging system is adjusted according to the state of the user's eye. Adjust the position of one or more imaging lenses in the optical system according to the internal state, thereby adjusting the position of the imaging surface of the imaging system.
  • adjusting the position of the imaging plane of the imaging system according to the state of the user's eyes includes: when a trigger condition is met, adjusting the position of the imaging plane of the imaging system according to the state of the user's eyes, wherein the trigger condition includes one of the following or Various:
  • the use time is greater than or equal to the preset adjustment period
  • the time interval from the last adjustment is greater than or equal to N times the preset adjustment period, N ⁇ 1;
  • the determined eye state is a preset eye state.
  • the preset eye state is a squinting state.
  • the state of the user's eyes includes: the state of the user's eyes squinting, the state of the user's eyes opening, and the result of the user's vision evaluation.
  • the method further includes: adjusting the position of the imaging surface according to a preset cycle according to the vision evaluation result.
  • a vision evaluation result can be obtained, and the correction strategy can be adjusted according to the vision evaluation result, and the vision correction can be performed automatically and in real time according to the adjusted correction strategy.
  • the vision correction can be performed automatically and in real time according to the adjusted correction strategy.
  • the position of the imaging surface is adjusted according to a preset cycle according to the vision evaluation result, which can avoid eye fatigue of the user and improve comfort.
  • the preset period is 30 minutes or 10 minutes
  • the position of the imaging plane can be adjusted by adjusting the position of the imaging lens in the imaging system.
  • the imaging adjustment method further includes:
  • setting the initial position of the imaging plane of the imaging system is equivalent to initializing the position of the imaging plane.
  • An optional manner is to adjust the position of one or more imaging lenses in the optical lens to an initial position, and the initial position of the imaging lens may match the position of the user's initial vision lens.
  • setting the initial position of the imaging plane of the imaging system includes: when a trigger condition is met, setting the initial position of the imaging plane of the imaging system, wherein the trigger condition includes one or more of the following:
  • the use time is greater than or equal to the preset adjustment period
  • the time interval from the last adjustment is greater than or equal to N times the preset adjustment period, N ⁇ 1;
  • the determined eye state is a preset eye state.
  • the preset eye state is a squinting state.
  • the user's visual acuity limit or visual acuity evaluation result may be acquired according to the monitored position of the imaging lens corresponding to the preset eye state.
  • the optical system includes a first imaging lens and a second imaging lens; the imaging system further includes a screen, the first imaging lens is located between the screen and the user's eyes, and the second imaging lens is located between the first imaging lens and the user's eyes. between screens;
  • Adjusting the distance between the imaging surface of the imaging system and the user's eyes includes: adjusting the distance between the second imaging lens and the screen.
  • adjusting the distance between the second imaging lens and the screen may be moving the second imaging lens by a preset diopter to adjust the distance between the second imaging lens and the screen.
  • the preset diopter can be myopia diopter or hyperopia diopter. Take the myopia diopter as an example for illustration. If the preset diopter is 0.01D (diopter is the unit for measuring the refractive power of the lens, the English full name is Dioptre, abbreviated as D) , that is, the degree of adjustment for one move is 0.01D.
  • the distance between the second imaging lens and the screen is referred to as the object distance for short, as shown in Table 2, which shows the adjustment relationship between the myopia diopter and the object distance:
  • the corresponding myopia diopter is 0.2D, that is, Table 2 can be understood as the corresponding relationship between the myopia diopter and the object distance.
  • the object distance can be converted into the corresponding diopter value, or the diopter can be converted into the corresponding object distance.
  • the screen distance can be adjusted according to the relationship between the screen distance, the object distance M, and the myopia diopter.
  • the adjustment relationship between the object distance M, the screen distance, and the myopia diopter is shown in Table 3.
  • the object distance and the screen distance can be adjusted according to the adjustment relationship between the object distance M, screen distance, and myopia diopter in Table 3, such as adjusting the screen distance and object distance in a VR or AR eye protection device M.
  • the screen can be zoomed out or zoomed in timely and strategically, and the user's vision limit can be tested according to whether the squinting action is detected, so as to judge the user's vision improvement. , and then adjust the distance correction strategy in real time.
  • Table 2 and Table 3 correspond to the adjustment relationship of the imaging system in Fig. 15a-Fig. 15c.
  • infrared light-emitting devices are used to irradiate the human eyes, and then photoelectric conversion devices are used to sense the changes in reflection, through the imaging adjustment device, or on the basis of the imaging adjustment device
  • Photoelectric conversion devices are used to sense the changes in reflection, through the imaging adjustment device, or on the basis of the imaging adjustment device
  • Build a sensor-based eye tracking circuit or build an imaging adjustment device based on an eye tracking device of related technologies, or build an eye state acquisition device on the basis of an imaging adjustment device, which can effectively identify squinting or opening eyes action.
  • the corresponding feedback framework including vision assessment program and distance adjustment strategy program
  • the feedback framework is shown in Figure 19.
  • a timing register is assigned to store timing information in the control device that executes the above method, and a visual acuity evaluation program and a distance adjustment strategy adjustment program are configured in the control device.
  • the imaging adjustment method is shown in FIG. 20 . display, including:
  • Step S11 triggering the vision assessment program
  • step S11 when the status stored in the timing register indicates that the timer has arrived, the visual acuity evaluation program is triggered. If the user's use time is greater than or equal to the preset adjustment period to trigger the vision assessment program, or the time interval from the last adjustment is greater than or equal to N times the preset adjustment period (N ⁇ 1), the vision assessment program can be triggered.
  • the eyesight evaluation program may be triggered when it is determined that the eye state is a squint state based on the electrical signal.
  • Determining the state of the eye based on the electrical signal may be based on the electrical signal and the duration or number of times the electrical signal is received continuously. For example, if the relationship between the received electrical signal and the state of the eye is set such that when the electrical signal is at a high level, the corresponding eye state is a squinting state, then when the received electrical signal is at a high level and the high level is continuously received When the number of times exceeds the preset number of times or exceeds the preset duration, it is determined that the eye state is a squint state.
  • the preset adjustment cycle can be set according to actual needs, and is not limited here.
  • the preset adjustment period is 2 days, 2 months or 2 hours.
  • the imaging adjustment method may further include clearing the timer and entering the next period of timing.
  • the timer can be reset to zero and enter the next period of timing.
  • Step S12 Set the initial position of the imaging surface of the imaging system.
  • Step S12 includes: the eyesight evaluation program adjusts the object distance to match the user's initial eyesight.
  • the distance at which the user's initial vision is matched may be the distance of the object distance at the normal vision level, or may be the object distance initially set for a certain user, or the object distance after the user's last correction.
  • the relationship between the myopia diopter and the object distance can be referred to in Table 2 above.
  • the initial visual acuity is 1D
  • the matching distance is 4.0mm
  • the current visual acuity is 2D
  • the matching distance is 4.8mm.
  • the movement is not limited to the unit of 0.01D, or the driving device can be directly controlled to move to the distance matching the initial vision at one time.
  • Step S13 Control the driving device to adjust the imaging lens in the imaging system according to the monitored eye state of the user to adjust the position of the imaging surface of the imaging system.
  • Step S13 includes: the visual acuity assessment program receives the electric signal, judges the state of the eye according to the electric signal, and adjusts the position of the imaging surface of the imaging system according to the state of the eye.
  • Adjusting and adjusting the position of the imaging surface of the imaging system according to the eye state includes: the visual acuity assessment program controls the driving device to adjust the object distance in units of preset myopia diopters according to the monitored eye state of the user.
  • step S13 the visual acuity assessment program detects the logical value received by the control device from the comparison device. If the logical value is 1, it is judged as squinting, and if the logical value is 0, it is judged as open eyes.
  • the monitoring of eye opening or squinting is carried out by the light emitter, photoelectric conversion device, comparison device, and control device described in the above embodiments. Refer to the description of the above embodiments, and details will not be repeated here.
  • the preset myopia diopter may be, but not limited to, 0.01D.
  • the optical relationship between the myopia diopter and the object distance refer to the above description, which will not be repeated here.
  • the imaging system shown in 15a-15c is taken as an example for illustration.
  • the driving device is continuously controlled to use the preset myopia diopter.
  • the second imaging lens L2 is moved in units of 1; when it is detected that the user squints, it is determined that the upper limit of the user's eyes has been reached, and the driving device is controlled to stop moving the second imaging lens L2.
  • the vision evaluation program controls the driving device to adjust the position of the imaging lens L2 so that the object distance M gradually decreases.
  • the value of the distance M is M1 (as shown in FIG. 15 a )
  • the movement of the second imaging lens L2 is stopped.
  • the visual acuity after initialization is 3D
  • the corresponding object distance M is 5.6 mm (M2 in Fig. 15 )
  • the control drive device will reduce the object distance M in units of myopia diopter 0.01D
  • the driving device is controlled to stop moving the second imaging lens L2. For example, when the user's squinting is detected, the number of movements is 200 times, then the corresponding diopter at this time is 1D, and the corresponding object distance is M. 4.0mm (M1 in Figure 15).
  • the method further includes: sending the number of times of movement to the distance adjustment strategy adjustment program.
  • the number of movements recorded by the visual assessment program is the upper limit of the user's eye use.
  • the initial object distance is 5.6mm, and the corresponding diopter is 3D; after 200 movements, the upper limit of eye use is detected, which can be understood as the user's
  • the corresponding object distance is 4mm, and the corresponding diopter is 1D.
  • the method further includes: the distance adjustment strategy adjustment program performs strategy adjustment according to the number of movements from the vision evaluation program.
  • the above-mentioned performing strategy adjustment according to the adjusted position of the imaging surface includes: the distance adjustment strategy adjustment program executes the strategy adjustment according to the movement times from the vision evaluation program.
  • the distance adjustment program executes the strategy adjustment according to the adjustment relationship of the object distance M, the screen distance, the myopia diopter, the initial object distance and the number of movements in Table 3 above. For example, when the number of movements is 200, the distance adjustment program determines that the myopia diopter corresponding to the user's visual acuity evaluation result is 1D according to the initial vision of 3D and the number of movements of 200, and then adjusts the strategy according to the myopia diopter of 1D. Adjust the strategy according to the myopia diopter corresponding to the user's visual acuity evaluation result, and adjust the object distance according to the preset cycle (that is, adjust the position of the imaging surface according to the preset cycle).
  • the adjustment strategy corresponding to the myopia diopter 1D is: the preset cycle is 30 minutes, 10 minutes by adjusting the object distance to adjust the screen distance to 800mm, the next ten minutes by adjusting the object distance to adjust the plane screen distance to 400mm, and then the next ten minutes to adjust the screen distance to 600mm, the second At the beginning of the first cycle, adjust the screen distance to 800mm, and reciprocate in turn.
  • the distance adjustment strategy adjustment program in the embodiment of the present disclosure is embedded in the original object distance adjustment program in the form of a sub-function, and the distance adjustment function in the main function is biased according to the number of movements returned by the vision evaluation program. displacement.
  • Step S11-Step S13 shown in Figure 20 can be understood as performing vision assessment based on the monitored squint or eye-opening state, and finally obtain a user vision assessment result, and then the adjustment distance adjustment program performs strategic adjustment based on the vision assessment result , and perform real-time and automatic vision correction according to the adjusted correction strategy. Since the timing register and the visual acuity evaluation device are all set in the control device, the main body performing steps S11-S13 can be understood as being executed by the control device.
  • the adjusted correction strategy may include: adjusting the position of the imaging plane according to a preset period according to the vision evaluation result, and adjusting the position of the imaging plane according to a preset distance within the preset period.
  • the preset period is 30 minutes or 10 minutes
  • the position of the imaging surface can be adjusted by adjusting the position of the imaging lens in the imaging system. If it is a VA or AR eye protection device, adjusting the position of the imaging lens also adjusts the screen distance. For example, by adjusting the position of the imaging lens, the preset cycle is 30 minutes, and the screen distance in one cycle is 10 minutes and 300 meters, 800 meters in 10 minutes, 600 meters in 10 minutes.
  • the vision evaluation program when the distance adjustment program executes strategy adjustment according to the vision evaluation result, and corrects according to the adjusted correction strategy, when the user's eye state is detected as squinting, the vision evaluation program can be triggered Carry out visual acuity assessment, and after the new visual acuity assessment result is obtained by the visual acuity assessment program, the adjustment program adjusts the vision correction according to the strategy corresponding to the new visual acuity assessment result.
  • the distance adjustment procedure and the vision assessment results obtained from the vision assessment procedure all have corresponding adjustment strategies, and the correction adjustment strategy can be set according to the actual situation, which is not limited here.
  • the imaging plane adjustment method of the present disclosure can be applied to real-time monitoring of the user's eyesight, as shown in FIG. 21 , including:
  • Step S21 triggering the adjustment of the imaging plane when it is detected that the user squints.
  • Step S21 may include controlling the driving device to drive the imaging lens in the optical system to adjust the optical path when the control device receives that the level of the comparison device is a high level, or the received electrical signal is higher than the first preset electrical signal.
  • the first preset electrical signal is 680mV.
  • Adjust the optical path as above to adjust the relationship between the object distance between the imaging lens and the screen and the diopter of myopia, such as moving the imaging lens in the optical system in units of 0.01D.
  • step S21 When the imaging lens is driven to adjust the optical path (that is, the position of the imaging plane of the imaging system is adjusted) in step S21, the number of times the imaging lens is moved is also recorded.
  • Step S22 Stop adjusting the imaging plane when it is detected that the user's eyes are open.
  • Step S22 may include: the control device controls the driving device to stop driving the imaging lens in the optical system when the control device receives that the level of the comparison device is a low level, or the received electrical signal is lower than the second preset electrical signal.
  • the myopia diopter before triggering the imaging plane adjustment is 1D
  • the corresponding object distance is 4.0mm
  • the adjustment is stopped after moving 100 times.
  • the myopia diopter after adjustment is 2D
  • the corresponding object distance is 4.8mm.
  • the correction can be performed according to the correction strategy corresponding to the diopter of the eye corresponding to the stop of the adjustment of the imaging plane.
  • performing vision correction according to the correction strategy corresponding to the myopia diopter 2D may include adjusting the screen image distance according to a period corresponding to the myopia diopter 2D.
  • the screen distance may correspond to the myopia diopter and the object distance, and the corresponding relationship is shown in Table 3.
  • the corrective strategy is implemented to better protect the eyes on the basis of comfortable use
  • the screen distance can be set according to the preset cycle.
  • the preset cycle is 40 minutes, and the screen distance in 10 minutes is 500mm, the screen distance for the next 10 minutes is 1000mm, the screen distance for the next 10 minutes is 1500mm, and the screen distance for the next 10 minutes is 1000mm respectively.
  • An embodiment of the present disclosure also provides a non-transitory computer-readable storage medium, the storage medium is configured to store computer program instructions, wherein the imaging adjustment method described in any one of the above can be implemented when the computer program instructions run.
  • An imaging adjustment device and method, a wearable device, and a storage medium provided by the embodiments of the present disclosure generate electrical signals through photoelectric conversion based on the second light reflected by the user's eyes, judge the state of the eyes according to the electrical signals, and judge the state of the eyes according to the state of the eyes.
  • the position of the imaging surface of the optical system can be adjusted through the user's squinting and eye opening behaviors, so that the user's vision can be monitored and corrected in time and automatically, so that According to the monitoring results, the imaging position is adjusted automatically and in time to improve user comfort.
  • the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute.
  • Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
  • Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media).
  • computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer.
  • communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

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Abstract

一种成像调整装置(10)及方法、可穿戴设备、存储介质，其中成像调整装置(10)包括发光器件(101)、光电转换器件(102)、控制装置(103)、驱动装置(104)；发光器件(101)，设置为发射第一光线，使第一光线照射到用户眼部；光电转换器件(102)，设置为基于用户眼部反射的第二光线进行光电转换生成电信号，并将生成的电信号提供给控制装置(103)；控制装置(103)，设置为基于电信号判断用户眼部状态，根据用户眼部状态控制驱动装置(104)工作；驱动装置(104)，设置为在控制装置(103)的控制下调整成像系统成像面的位置。该成像调整装置(10)能够通过用户眯眼、睁眼的行为动作来调整光学系统(20)的成像面位置，从而可以及时、自动的对用户视力进行监测和矫正，以便根据监测结果及时、自动的调整成像位置，提高使用者舒适度。

Description

成像调整装置及方法、可穿戴设备、存储介质
本申请要求于2021年7月23日提交中国专利局、申请号为202110836879.3、发明名称为“一种成像调整装置及方法、可穿戴设备、存储介质”的中国专利申请的优先权，其内容应理解为通过引用的方式并入本申请中。
技术领域
本公开实施例涉及但不限于智能穿戴技术领域，尤其涉及一种成像调整装置及方法、可穿戴设备、存储介质。
背景技术
随着科技发展的进步，人们的娱乐方式也越来越多，VR(Virtual Reality，虚拟现实)技术和AR(Augmented Reality，增强现实)技术也逐渐应用到影音娱乐中，各种影音娱乐设备的趣味性大大提高。而VR/AR眼保仪的诞生使得假性近视患者在使用VR或AR设备进行娱乐的同时，也能够进行近视矫正。虽然，VR/AR眼保仪为近视患者带来了福音，但是基础版的VR/AR眼保仪在调距矫正策略上仍存在着缺陷，这就使得VR/AR眼保仪的矫正效果大打折扣。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
一方面，本公开实施例提供了一种成像调整装置，应用于调整由光学系统与用户眼睛构成的成像系统的成像面，包括：发光器件、光电转换器件、控制装置、驱动装置；
所述发光器件，设置为发射第一光线，使所述第一光线照射到用户眼部；
所述光电转换器件，设置为基于用户眼部反射的第二光线进行光电转换生成电信号，并将生成的电信号提供给所述控制装置；
所述控制装置，设置为基于所述电信号判断用户眼部状态，根据用户眼部状态控制所述驱动装置工作；
所述驱动装置，设置为在所述控制装置的控制下调整所述成像系统成像面的位置。
在一些可选实施例中，所述发光器件发射的第一光线的波长在所述光电转换器件的光谱响应范围之内。
在一些可选实施例中，所述发光器件和所述光电转换器件设置于所述光学成像系统的侧面，以避免遮挡所述光学成像系统的光路。
在一些可选实施例中，成像调整装置还包括比较装置；
所述光电转换器件，设置为将生成的所述电信号提供给所述比较装置；
所述比较装置，设置为将所述光电转换器件生成的所述电信号与预设的电信号比较，生成比较结果信号，将所述比较结果信号发送给所述控制装置；
所述控制装置，是设置为根据所述比较结果信号控制所述驱动装置工作。
在一些可选实施例中，成像调整装置还包括滤波装置和信号放大装置；
所述滤波装置，与所述光电转换器件和所述信号放大装置连接，设置为对所述光电转换器件生成的所述电信号进行滤波；
所述信号放大装置，与所述滤波装置连接和所述比较装置连接，设置为对滤波后的信号进行信号放大后，将放大后的信号提供给所述比较装置。
在一些可选实施例中，所述光电转换器件包括光敏三级管和信号转换电阻；
所述光敏三极管的集电极连接至所述信号转换电阻，所述光敏三级管与所述信号转换电阻的连接节点作为所述光电转换器件的输出端。
在一些可选实施例中，所述驱动装置包括物距调节电机；
所述物距调节电机，设置为在所述控制装置的控制下调整所述光学系统中成像透镜的位置。
在一些可选实施例中，成像调整装置还包括眼部状态获取装置；
所述眼部状态获取装置，设置为获取眼部状态信息；
所述控制装置，设置为基于所述电信号和所述眼部状态信息控制所述驱动装置工作。
另一方面，本公开实施例还提供了一种可穿戴设备，包括光学系统以及上述的成像调整装置，所述成像调整装置设置为调整由光学系统与用户眼睛构成的成像系统的成像面。
在一些可选实施例中，可穿戴设备还包括屏幕；
所述屏幕的显示面朝向所述光学系统。
在一些可选实施例中，所述成像调整装置通过对所述光学系统中成像透镜的位置进行调整，实现对所述成像系统的成像面的调整。
在一些可选实施例中，所述光学系统包括第一成像透镜、第二成像透镜；
所述第一成像透镜，设置于眼部与所述第二成像透镜之间；
所述第二成像透镜，设置于所述第一成像透镜与所述屏幕之间；
所述成像调整装置，是设置为调整所述第一成像透镜或所述第二成像透镜的位置，从而调整由所述光学系统和眼睛构成的成像系统成像面的位置。
又一方面，本公开实施例还提供了一种成像调整方法，应用于上面任意一项实施例所述的成像调整装置，所述方法包括：
发射第一光线，使所述第一光线照射到用户眼部；
基于对第二光线光电转换后生成的电信号判断用户眼部状态，所述第二光线为第一光线照射到用户眼部后，用户眼部反射的光线；
根据用户眼部状态调整所述成像系统成像面的位置。
在一些可选实施例中，所述方法还包括：
设置所述成像系统成像面的初始位置，所述初始位置为与用户初始视力相匹配。
在一些可选实施例中，所述用户眼部状态包括：用户眯眼状态、用户睁眼状态、用户视力评估结果。
在一些可选实施例中，根据用户眼部状态调整所述成像系统成像面的位置之后，还包括：根据所述视力评估结果按照预设周期调整成像面的位置。
在一些可选实施例中，所述设置所述成像系统成像面的初始位置，包括：在满足触发条件时，设置所述成像系统成像面的初始位置，其中，所述触发条件包括以下其中一种或多种：
使用时长大于或等于预设的调整周期；
距离上一次调整的时间间隔大于或等于预设的调整周期的N倍，N≥1；
所判定的眼部状态为预设的眼部状态。
在一些可选实施例中，所述光学系统包括第一成像透镜、第二成像透镜；所述成像系统还包括屏幕，所述第一成像透镜位于所屏幕与用户眼睛之间，所述第二成像透镜位于所述第一成像透镜与所述屏幕之间；
所述调整所述成像系统成像面与用户眼部之间的距离，包括：
调整所述第二成像透镜与所述屏幕之间的距离。
在一些可选实施例中，所述根据用户眼部状态调整所述成像系统成像面的位置，包括：在满足触发条件时，根据用户眼部状态调整所述成像系统成像面的位置，其中，所述触发条件包括以下其中一种或多种：
使用时长大于或等于预设的调整周期；
距离上一次调整的时间间隔大于或等于预设的调整周期的N倍，N≥1；
所判定的眼部状态为预设的眼部状态。
又一方面，本公开实施例还提供了一种非瞬态计算机可读存储介质，所述存储介质设置为存储计算机程序指令，其中，所述计算机程序指令运行时可实现上面任意一项所述的成像调整方法。
本公开实施例的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本公开实施例而了解。本公开实施例的其他优点可通过在说明书以及附图中所描述的方案来实现和获得。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图说明
附图用来提供对本公开技术方案的理解，并且构成说明书的一部分，与 本公开的实施例一起用于解释本公开的技术方案，并不构成对本公开技术方案的限制。
图1为本公开实施例提供的成像面的一种调整装置的结构示意图；
图2为本公开实施例提供的成像面的一种调整装置的应用结构示意图；
图3为本公开实施例提供的发光器件设置的结构示意图；
图4a-图4c为本公开实施例提供的光发光器件、光电转换器件设置的结构示意图；
图5为本公开实施例提供的一种成像调整装置的结构示意图；
图6为本公开实施例提供的一种成像调整装置的结构示意图；
图7为本公开实施例提供的一种成像调整装置的应用结构示意图；
图8为本公开实施例提供的比较装置接收的光电转换器件的电压时序图；
图9为本公开实施例提供的比较装置向控制装置输出电平的时序图；
图10为本公开实施例提供的成像调整装置的结构示意图；
图11为本公开实施例提供的一种可穿戴设备结构示意图；
图12为本公开实施例提供的一种可穿戴设备结构示意图；
图13为本公开实施例提供的一种可穿戴设备的应用结构示意图；
图14a-图14c为本公开实施例提供的一种光路调整示意图；
图15a-图15c为本公开实施例提供的另一种光路调整示意图；
图16a-图16c为本公开实施例提供的另一种光路调整示意图；
图17a-图17c为本公开实施例提供的另一种光路调整示意图；
图18为本公开实施例提供的一种成像调整方法流程图；
图19所示为本公开实施例提供的一种可穿戴设备的应用结构示意图；
图20为本公开实施例提供的一种成像调整方法流程图；
图21为本公开实施例提供的另一种成像调整方法流程图。
具体实施方式
下文中将结合附图对本公开实施例进行详细说明。需要说明的是，在不冲突的情况下，本公开实施例及实施例中的特征可以相互任意组合。
除非另外定义，本公开实施例公开使用的技术术语或者科学术语应当为本公开实施例所属领域内具有一般技能的人士所理解的通常意义。本公开实施例中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语一直出该词前面的元件或误检涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者误检。
在本说明书中，为了方便起见，使用“中部”、“上”、“下”、“前”、“后”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示方位或位置关系的词句以参照附图说明构成要素的位置关系，仅是为了便于描述本说明书和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开实施例的限制。构成要素的位置关系根据描述各构成要素的方向适当地改变。因此，不局限于在说明书中说明的词句，根据情况可以适当地更换。
在本说明书中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解。例如，可以是固定连接，或者可以是可拆卸连接，或一体地连接；可以是机械连接，或者可以是电连接；可以是直接相连，或者可以通过中间件间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本公开实施例中的含义。
目前，VR或AR眼保仪的矫正策略，一方面基于根据患者近视情况预设的调距矫正策略；另一方面则基于用户的手动主动调节。但是这两种矫正策略忽略了两个事实，一是患者的近视情况是动态变化的，预设的调距矫正策略在一段时间后便不再适合患者的双眼，反倒会对患者视力造成伤害；二是当患者沉浸于VR娱乐时，能够顾及双眼进行主动调节的概率是很低的，这就使得主动调节策略在实际应用中很大程度上是被闲置的。从而使得用户使用舒适度下降。
如图1所示，本公开实施例提供了一种成像调整装置10，应用于调整由光学系统与用户眼睛构成的成像系统的成像面。该成像调整装置10包括：发 光器件101、光电转换器件102、控制装置103、驱动装置104；
发光器件101，设置为发射第一光线，使第一光线照射到用户眼部；
光电转换器件102，设置为基于用户眼部反射的第二光线进行光电转换生成电信号，并将生成的电信号提供给控制装置103；
控制装置103，设置为基于电信号判断眼部状态，根据用户眼部状态控制驱动装置104工作；
驱动装置104，设置为在控制装置103的控制下调整成像系统成像面的位置。
本公开实施例提供的成像调整装置，可以基于用户眼部反射的第二光线进行光电转换生成的电信号来判断眼部状态，根据眼部状态调整由光学系统和眼睛构成的成像系统的成像面；能够通过用户眯眼或睁眼等眼部状态来调整成像系统成像面的位置，从而可以及时、自动地对用户视力进行监测，以便根据监测结果及时、自动的调整成像面位置，提高用户使用舒适度。
有调查显示，近视者在视野拉远而突然变得模糊时，会下意识地通过眯眼来看清物体。首先，眯眼可以减小外界光线进入角膜的面积，从而引起一点小孔聚焦的作用；其次是眼轮匝肌的收缩，可使眼睛对角膜产生一定的压力，迫使角膜改变屈光面，从而，使得进入眼内的光线折射角度改变，在到达视网膜时形成聚焦。而对于有些远视者，在视野拉近时会变模糊，也会下意识的眯眼。所以，可以通过监测用户睁眼或眯眼的眼部状态来监测用户视力，或者说来监测用户使用舒适度，当用户眯眼时，说明当前成像面位置不适合，用户不舒适，当用户睁眼时，说明当前成像面位置适合，相对来说，用户更为舒适。
测试表明，人眼皮的反光能力强于眼球表面，因此，当用户眯眼时，发光器件照射到眼皮上的第一光线反射形成的第二光线的强度会增强，光电转换器件接收的第二光线的光强变大后，光电转换生成的电信号也会增大；当用户睁眼时，发光器件照射到眼皮上的第一光线反射形成的第二光线的强度会减小，光电转换器件接收的第二光线的光强减小后，光电转换生成的电信号也会减小。基于此原理，本公开实施例根据光电转换器件电信号的大小来检测用户眯眼或睁眼的眼部状态。
本公开实施例提供的成像调整装置，可以应用于眼镜(如近视镜、远视镜、3D眼镜等)、视力校正设备、头戴设备(如头盔、VR眼保仪、AR眼保仪、其他VR或AR设备等)与眼睛构成的成像系统的成像面位置调整，但不限于这些设备和场景。
目前的眼镜，多半是固定不变的度数，当眼睛实际度数发生变化不再与原来配置的镜片度数匹配时，用户需要去眼镜店重新验光、配置镜片，原来的镜片多半丢掉，存在资源浪费的情况。而使用本公开实施例提供的成像调整装置后，眼镜的度数可以通过调整成像面的位置来调整，原来镜片度数不适应时不必重新配置眼镜，在很大程度上减少镜片的浪费。
在头戴设备中，如头盔目前很少带有视力矫正功能，头盔中设置本公开实施例提供的成像面调整装置，可以不用再佩戴眼镜，并能够实时监测、矫正视力。
在一种示例性实施例中，眼部状态包括睁眼状态、眯眼状态，或者所述眼部状态为用户视力评估结果。
本公开实施例中，用户视力评估结果，可以采用成像调整装置10对用户视力进行评估得出的结果，视力评估结果可以为根据监测到的用户眼部状态得出的用户视力极限，可以参考后面成像调整方法，在此不进行详细描述。
本公开实施例提供的成像调整装置，通过成像调整装置10根据用户眼部状态调整由光学系统和眼睛构成的成像系统的成像面，从而可以及时、自动的对由眼睛和光学系统构成的成像系统进行调距或调焦，可以提升用户使用舒适度。本公开实施例可以用于对用户视力进行矫正。
本公开实施例的一种应用场景：可以根据用户睁眼或眯眼状态实时调整光学系统与眼睛构成的成像系统的成像面的位置，以适应用户当前眼睛的度数。相当于实时对视力进行监测和/或矫正。
本公开实施例的另一种应用场景：成像面调整装置10中的控制装置103可以设置预设时间，在达到预设时间之后触发成像调整装置10对成像面的位置进行调整。相当于定期进行视力监测和/或矫正。
本公开实施例的另一种应用场景：成像面调整装置10中的控制装置103 可以设置预设时间，在达到预设时间之后触发成像调整装置10对成像面的位置进行调整，得出视力评估结果，再根据视力评估结果对成像面的位置进行调整。相当于定期进行视力评估和/或矫正。
在本公开实施例中，驱动装置104在控制装置103的控制下调整成像面在光学系统靠近眼部一侧的位置，使调整后成像面的位置尽可能的落在眼睛视网膜上。
在一种示例性实施例中，发光器件101发射的第一光线的波长在光电转换器件102的光谱响应范围之内，以便光电转换器件102能够基于第二光线进行光电转换。
在本公开实施例中，在选择发光器件101和光电转换器件102时，其光谱范围为不落入眼睛观测事物时接收光线的光谱范围，且不会对眼睛产生伤害，比如，可以避开可见光的光谱范围，而选择红外光的光谱范围(波长范围为760nm-1400nm)，例如发光器件101发光的波长与光电转换器件响应波长均为850nm。实际实施时，只要不会对眼睛产生伤害、避开观测事物时接收光线的光谱范围即可，如何选择在此不做限定；
至于发光器件101和光电转换器件102的选用哪一种器件，在此不做限定，只要能够实现相应功能即可。例如，发光器件101选择红外发光二极管，相应的光电转换器件102选择感应红外光的光敏二级管或光敏三级管；或者，发光器件101选择红外发光三极管，相应的光电转换器件102选择红外光光敏二级管或光敏三级管。
在一种示例性实施例中，如图2所示，光电转换器件102包括光敏三级管和信号转换电阻；光敏三极管的集电极连接至电信号转换电阻R1，光敏三极管与信号转换电阻R1的连接节点作为光电转换器件102的输出端。其中，信号转换电阻R1的作用是将光敏三级管经光电转换生成的电流信号转换为电压信号。
在本公开实施例中，发光器件101可以在控制装置103的控制下发光。光电转换器件102可以在控制装置103的控制下进行光电转换。另一种可行的实施方式是设置控制光电转换器件102的第一开关，来控制光电转换器件102进行光电转换，设置控制发光器件101的第二开关，来控制发光器件101 发光。其中第一开关和第二开关可以为同一个开关，开关闭合后光电转换器件102和发光器件同时启动工作，或者可以分开设置。
在一种示例性实施例中，如图2所示，发光器件101和光电转换器102件设置于光学系统20的侧面，以避免遮挡光学系统20的光路。
图2所示为成像调整装置10的一种应用示意图，包括用户眼睛、光学系统20、成像调整装置10三者之间的结构示意图。其中，为了避免遮挡光学系统20与用户眼睛之间光路的传输，发光器件101与光电转换器件102可以设置在光学系统20的周边，发光器件101和光电转换器件102相对位置不限于此，只要发光器件101发射的第一光线能够照射到用户眼睛，经用户眼睛反射形成的第二光线能够照射到光电转换器件102即可。
在本公开实施例中，为了提高用户眼部接收的光线强度，可以在光学系统20周边区域201设置多个发光器件101，多个发光器件101可以环绕光学系统20设置。如图3所示，为将多个发光器件101设置在光学系统20的周边区域201的结构示意图。
在本公开实施例中，光电转换器件102可以设置一个，或者可以设置多个，为了保证光电转换器件102能够更好的接收到经人眼反射的形成的第二光线，如图4a所示，光电转换器件102可以设置多个。一种可行的实施方式如图4a所示，可以将多个光电转换器件102设置在光学系统20的周边区域201。其中，光电转换器件102和发光器件101的设置方式不限于图4a中所示结构；如图4b和图4c所示，可以将光电转换器件102和发光器件101设置于光学系统周边区域201相对区域的位置对于光电转换器件102和发光器件101的设置方式不做限定，只要能够实现相应的功能即可。
本公开实施例中，光电转换器件102和发光器件101可以如图4a-4c所示设置于光学系统20的周边区域201，或者发光器件101和光电转换器件不限于设置于光学系统20的周边的其他装置上，只要能够实现相应功能即可。例如，当成像调整装置10的应用场景为眼镜时，光电转换器件102和发光器件101可以设置于眼镜的镜架上，只要能避免遮挡光学系统20的光路，同时又能够实现相应的功能即可。
本公开实施例中，光学系统20的固定方式可以结合应用场景和设备进行 设置，如果应用在眼镜上，则将光学系统20固定在镜架上即可；如果应用于可穿戴设备，则设置在可穿戴设备内部。
本公开实施例中驱动装置104、控制装置103的位置不做限定，只要能够实现相应的功能且不会对光路传输产生遮挡即可。
在本公开实施例中，发光器件101可以与控制装置103连接，由控制装置向其提供电能，或者可以由其他供电设备向其提供电能。
在一种示例性实施例中，如图5所示，成像调整装置10还包括比较装置105；
光电转换器件101，设置为将生成的电信号提供给比较装置105；
比较装置105，设置为将光电转换器件101生成的电信号与预设的电信号比较，生成比较结果信号，将比较结果信号发送给控制装置103；
控制装置103，是设置为根据比较结果信号控制驱动装置104工作。
在一种示例性实施例中，为了增强光电转换器件102输出的电信号的强度，使得比较装置105能够准确得出比较结果信号，还可设置信号增强装置。
如图6所示，信号增强装置可包括滤波装置106和信号放大装置107；
滤波装置106，与光电转换器件102和信号放大装置107连接，设置为对光电转换器件102生成的电信号进行滤波；
信号放大装置107，与滤波装置106和比较装置105连接，设置为对滤波后的信号进行信号放大后，将放大后的信号提供给比较装置105。
在本公开实施例中，比较装置105、滤波装置106和信号放大装置107可以采用相关技术中能够实现相应功能的电路。
如图7所示，为成像调整装置10的另一种应用示意图，为包括用户眼睛、光学系统20、成像调整装置10三者之间的另一种结构示意图。光电转换器件102中的光敏三级管输出的电信号依次通过滤波装置106的滤波、信号放大装置107的放大后利用比较装置105经过信号比较后向控制装置103输出比较结果信号。例如，光电转换器件102中光敏三极管输出的电压信号经滤波、放大后输出至比较装置105的信号如果高于预设的电信号，则比较装置105向控制装置103输出的比较结果信号为高电平信号(逻辑值1)；光敏三 极管输出的电压信号经滤波、放大后输出至比较装置105的信号如果低于预设的电信号，则比较装置105向控制装置103输出的比较结果信号为低电平信号(逻辑值0)。眼部状态、电信号(即表1中电压)、比较结果信号三者的关系如表1所示：
表1
眼部状态 电压(mV) 比较结果信号
睁眼状态 <680mV 0
眯眼状态 ≥680mV 1
表1中的电压是光电转换器件102进行光电转换生成的光电压经滤波、放大后传输至控制比较装置的电压，680mV是比较装置105设置的预设的电信号(预设的电信号可以称为阈值电压)，其中，阈值电压可以根据实际情况进行设置，不限于是680mV。
如图8所示，为在不同时间段基于眼部状态比较装置105输入端接收到的电压(即光电转换器件102进行光电转换后生成的电压信号经滤波、放大后输出至比较装置105的电压)，图9所示为在不同时段比较装置105向控制装置103发送的比较结果信号所对应的逻辑值。其中，在0-t1、t2-t3、t4-t5、t6-t7、t8-t9、t10-t11时段，比较装置105输入端接收的电压高于阈值电压，比较装置105生成逻辑值为1的比较结果信号，并将逻辑值为1的比较结果信号发送给控制装置103，控制装置103基于逻辑值为1的比较结果信号判定用户眼部状态为眯眼；在t1-t2、t3-t4、t5-t6、t7-t8、t9-t10时段，比较装置105输入端接收的电压低于阈值电压，比较装置105生成逻辑值为0的比较结果信号，并将逻辑值为0的比较结果信号发送给控制装置103，控制装置103基于逻辑值为0的比较结果信号判定用户眼部状态为睁眼。
在本公开实施例中，比较装置105可以是电压比较器，相应的，光电转换器件102进行光电转换后得出的信号为电压信号。如表1所示比较结果信号是比较装置105根据阈值电压与接收的电压进行比较得出的，其中，光电转换器件102进行光电转换后得出的电压信号，经过滤波、放大后输出至比较装置105的电压输入端，比较装置105的参考端输入的是阈值电压(预设 的电信号为阈值电压)，将参考端输入的阈值电压与输入端接收的电压进行比较，当比较装置105的输入端的电压大于等于参考端输入的阈值电压时，则向控制装置103输出比较结果信号为逻辑值1，当比较装置105的输入端的电压小于参考端输入的阈值电压时，则向控制装置103输出比较结果信号为逻辑值0。其中，比较结果信号的值的设置不限于此，结合实际场景，能够实现相应功能即可。
在本公开实施例中，比较装置105不限于是电压比较器，或者可以是电流比较器，最终比较的是电流值；相应的，光电转换器件102向比较装置105输出的是电流信号。
在一种示例性实施例中，如图10所示，成像调整装置还可包括眼部状态获取装置；
眼部状态获取装置，设置为获取眼部状态信息；
控制装置103，是设置为基于电信号和眼部状态信息控制驱动装置104工作。
在本公开实施例中，眼部状态获取装置获取的眼部状态信息包括睁眼状态信息、眯眼状态信息、闭眼状态信息、眨眼状态信息等。
在本公开实施例中，眼部状态获取装置可用相关技术中的眼部状态获取装置，在此不进行详细描述。
在本公开实施例中，眼部状态获取装置的作用是获取用户眼部状态信息，控制装置103可以基于眼部状态信息辅助判断用户是睁眼或是眯眼。例如，当用户眨眼时，通过眼部状态获取装置提供的眼部状态信息来辅助判断眼睛状态，避免控制装置103将眨眼状态误判为眯眼状态，从而避免错误的控制驱动装置104执行相关操作。
在示例性实施例中，上述眼部状态获取装置可以是摄像装置，通过摄像装置获取用户眼部状态信息，控制装置103基于眼部状态信息和电信号控制驱动装置104工作。例如，摄像装置可以通过拍照或者录像方式获取用户眼部状态信息。
在本公开另外一些实施例中，上述成像调整装置10可以设置在相关技术 的眼动追踪装置上，使得眼动追踪装置具有上述成像调整装置10的功能。
在本公开实施例中，为了避免将闭眼状态误判为眯眼状态，可以设置一预设电压，将闭眼时发光器件101照射到眼部后反射形成的第二光线经光电转换器件102转换后形成的电信号高于此预设电压时，判定为闭眼，并非眯眼。或者可以通过与眼部状态获取装置相结合的方式来判断是眯眼或者是闭眼。
在本公开实施例中，可以根据电信号以及收到电信号的时长或次数判定眼部状态。例如，判断眯眼状态维持时长超过预设时长或超过预设次数时，判定眼部状态为眯眼状态，而不是眨眼状态。
在一种示例性实施例中，驱动装置104包括物距调节电机，物距调节电机设置为在控制装置103的控制下调整光学系统中成像透镜的位置。如图2和图7所示，物距调节电机可以设置为调整光学系统20中的成像透镜L2的位置。在图2和图7所示结构中，物距调节电机或者可以设置成调节光学透镜L1的位置，在此不做限定。
本公开实施例还提供一种可穿戴设备，包括光学系统以及上面任意一实施例所述的成像调整装置10，成像调整装置10设置为调整由光学系统与用户眼睛构成的成像系统的成像面。
如图11所示，为一种可穿戴设备示例性模块组成框图，光学系统20与成像面调整装置10中的驱动装置104连接，能够在驱动装置104的驱动下调整成像面的位置。
本公开实施例中，可穿戴设备可以为VR或AR设备(包括VR或AR眼保仪)、头盔、眼镜等。
在本公开实施例中，可穿戴设备可以设置为封闭式结构，这样发光器件可以在封闭空间中多次反射，使得成像调整装置10中光电转换器件102可以接收到更多的第二光线，以便增加光电转换生成的电信号。
本公开实施例提供的可穿戴设备能够通过成像调整装置10根据用户眼部状态调整由光学系统和眼睛构成的成像系统的成像面，从而可以及时、自动的对由眼睛和光学系统构成的成像系统进行调距或调焦，可以提升用户使用 舒适度。本公开实施例可以用于对用户视力进行矫正。
本公开实施例的一种应用场景：可以根据用户睁眼或眯眼状态实时调整光学系统与眼睛构成的成像系统的成像面的位置，以适应用户当前眼睛的度数。相当于实时对视力进行监测和/或矫正。
本公开实施例的另一种应用场景：成像面调整装置10中的控制装置103可以设置预设时间，在达到预设时间之后触发成像调整装置10对成像面的位置进行调整。相当于定期进行视力监测和/或矫正。
本公开实施例的另一种应用场景：成像面调整装置10中的控制装置103可以设置预设时间，在达到预设时间之后触发成像调整装置10对成像面的位置进行调整，得出视力评估结果，再根据视力评估结果对成像面的位置进行调整。相当于定期进行视力评估和/或矫正。
在一种示例性实施例中，如图12所示，可穿戴设备还可包括屏幕21；屏幕21的显示面朝向光学系统20。
在一种示例性实施例中，屏幕21设置于光学系统20背离可穿戴设备佩戴者的眼部的一侧。
如图13所示，为一种可穿戴设备的应用场景示意图，屏幕21显示的画面经过光学系统20进入可穿戴设备佩戴者的眼部。图13中所示结构，屏幕21的固定方式可以结合实际应用场景来设置，只要能够实现其功能即可，在此不做限定。
在一种示例性实施例中，成像调整装置10通过对光学系统20中成像透镜的位置进行调整，实现对由眼睛和光学系统20构成的成像系统在位于眼睛一侧的成像面位置进行调整。
如图14a、图14b、图14c所示为一种成像调整示意图(即成像面的位置调整)，图14a-图14c中，光学系统20包括成像透镜L1，30代表眼球，31代表视网膜，32代表晶状体。图14a中，光线经过透镜L1、晶状体32汇聚后的交点落在视网膜31的前面；图14b、图14c中将成像透镜L1与眼球30距离拉近后，相同光线经过成像透镜L2、晶状体32汇聚后的交点落在视网膜31上，图14b中的虚线部分是透镜L1在图14a中位置的以及光线传播途 径，为清晰起见，图14c为将图14b中虚线部分的透镜和光线传播途径去掉之后的光路示意图。由此可以看出，通过调整光学系统20中成像透镜(如成像透镜L1)的位置就可以实现调整物体通过光学系统20、眼睛所构成的成像系统在靠近眼睛一侧成像面的位置，可以尽可能的使得成像面的位置落在眼睛视网膜上。
如图15a-图15c所示，光学系统20可以包括两个成像透镜L1和L2，可以通过调整成像透镜L2或L1与屏幕21之间的距离M来调整光学系统20与眼睛构成的光学系统的成像面位置。图15a-图15c是以成像透镜L1位置保持不变，只调整成像透镜L2的位置为例的示意图，成像调整装置10中驱动装置104在控制装置103的控制下调整成像透镜L2与屏幕21之间的距离来调整成像系统成像面的位置，其中，图15b是将图15a中成像透镜L2与屏幕21之间的距离由M1调整至M2之后光路传输示意图，图15b中的虚线是对应图15a中成像透镜L2的位置和光线传播路径，图15c是将图15b中虚线部分去掉的光路示意图。在实际应用中，驱动装置104或者可以调整成像透镜L1的位置，或者驱动装置104同时调整成像透镜L1和L2的位置，设置方式在此不做限定，只要能够实现既定功能即可。
在本公开实施例中，光学系统20中的成像透镜的数量不限于如图14-图15中的一个或两个，可以根据实际需要设置多个。并且，光学系统20中成像透镜不限于是凸透镜，可以根据实际需要设置凹透镜(如图16a-16c所示)，或者凹透镜与凸透镜相结合的方式(如图17a-17c所示)，在此不做限定，只要能够实现相应功能即可。当有多个透镜时，可以根据实际需要调整其中一个或多个透镜的位置，在此不做限定。
在一种示例性实施例中，光学系统包括第一成像透镜、第二成像透镜；
第一成像透镜，设置于眼部与第二成像透镜之间；
第二成像透镜，设置于第一成像透镜与屏幕21之间；
成像调整装置10，是设置为调整第一成像透镜或第二成像透镜的位置，从而调整由光学系统和眼睛构成的成像系统成像面的位置。
参考图15-图17所示，第一成像透镜为L1，第二成像透镜为L2，成像调整装置10通过调整第二成像透镜L2的位置来调整成像系统的成像面的位 置。
本公开实施例还提供一种成像调整方法，应用于调整由光学系统和用户眼睛构成的成像系统的成像面，如图18所示，包括：
步骤S1，发射第一光线，使第一光线照射到用户眼部；
步骤S2，基于对第二光线光电转换后生成的电信号判断用户眼部状态，所述第二光线为第一光线照射到用户眼部后，用户眼部反射的光线；
步骤S3，根据用户眼部状态调整成像系统成像面的位置。
本公开实施例提供的成像调整方法可以应用于上面成像调整装置，或者可以应用于上面所述的可穿戴设备，成像调整装置和可穿戴设备的结构示意图以及成像面调整示意图参考图1-图17所示，在此不再赘述。
本公开实施例提供的成像调整方法，可以基于用户眼部反射的第二光线进行光电转换生成的电信号来判断眼部状态，根据眼部状态调整由光学系统和眼睛构成的成像系统的成像面；根据用户眼部状态可以实时监测用户视力，并通过眯眼、睁眼的眼部状态作来调整成系统的成像面位置，能够实时、自动调距或调焦，带给用户更好的体验。
在本公开实施例中，基于电信号判断用户眼部状态，根据用户眼部状态调整成像系统成像面的位置，一种可选的实施方式是，基于电信号判断用户眼部状态，根据用户眼部状态调整光学系统中一个或多个成像透镜的位置，从而调整成像系统成像面的位置。
在一些实施例中，根据用户眼部状态调整成像系统成像面的位置，包括：在满足触发条件时，根据用户眼部状态调整成像系统成像面的位置，其中，触发条件包括以下其中一种或多种：
使用时长大于或等于预设的调整周期；
距离上一次调整的时间间隔大于或等于预设的调整周期的N倍，N≥1；
所判定的眼部状态为预设的眼部状态。
例如，预设的眼部状态为眯眼状态。
在一种示例性实施例中，用户眼部状态包括：用户眯眼状态、用户睁眼 状态、用户视力评估结果。
在一种示例性实施例中，根据用户眼部状态调整所述成像系统成像面的位置之后，还包括：根据视力评估结果按照预设周期调整成像面的位置。其中，根据用户眼部状态调整成像系统成像面的位置时可以得到一个视力评估结果，后续可以根据此视力评估结果调整矫正策略，并根据调整后的矫正策略自动、实时的进行视力矫正，在提高使用者舒适度的基础上，能够方便实时、自动进行视力矫正。
在本公开实施例中，根据视力评估结果按照预设周期调整成像面的位置，可以避免用户用眼疲劳，提高舒适度。例如，预设周期为30分钟或10分钟，成像面的位置可以通过调整成像系统中成像透镜的位置进行调整。
在一种示例性实施例中，成像调整方法还包括：
设置成像系统成像面的初始位置，初始位置为与用户初始视力相匹配的位置。
在本公开实施例中，设置成像系统成像面的初始位置，相当于对成像面的位置进行初始化。一种可选的方式是，将光学透镜中某一个或多个成像透镜的位置调整到初始位置，成像透镜初始位置可以与用户初始视力透镜的位置相匹配。
在一种示例性实施例中，设置成像系统成像面的初始位置，包括：在满足触发条件时，设置成像系统成像面的初始位置，其中，触发条件包括以下其中一种或多种：
使用时长大于或等于预设的调整周期；
距离上一次调整的时间间隔大于或等于预设的调整周期的N倍，N≥1；
所判定的眼部状态为预设的眼部状态。
例如，预设的眼部状态为眯眼状态。
在本公开实施例中，可以根据监测到的预设的眼部状态所对应的成像透镜的位置，获取用户视力极限或者视力评估结果。
在一种示例性实施例中，光学系统包括第一成像透镜、第二成像透镜；成像系统还包括屏幕，第一成像透镜位于屏幕与用户眼睛之间，第二成像透 镜位于第一成像透镜与屏幕之间；
调整成像系统成像面与用户眼部之间的距离，包括：调整第二成像透镜与屏幕之间的距离。
在本公开实施例中，调整第二成像透镜与屏幕之间的距离可以为以预设的屈光度为单位移动第二成像透镜，来调整第二成像透镜与屏幕之间的距离。
其中，预设的屈光度可以为近视屈光度或远视屈光度，以近视屈光度为例进行说明，假如预设的屈光度为0.01D(屈光度是量度透镜屈光能力的单位，英文全称为Dioptre，简写为D)，即移动一次调整的度数为0.01D。以下将第二成像透镜与屏幕之间的距离简称为物距，表2所示，为近视屈光度与物距调节关系：
表2
物距M/mm 近视屈光度
3.4 0.2D
3.5 0.3D
3.7 0.7D
4.0 1D
4.8 2D
5.6 3D
6.3 4D
10.1 10D
表2中，物距M为3.4mm时，对应近视屈光度为0.2D，即表2可以理解为近视屈光度与物距的对应关系。实际调整物距时，根据物距与近视屈光度的对应关系，可以将物距转换为相应的屈光度数值，或者可以将屈光度转换为对应的物距。
在本公开实施例中，可以根据屏幕画面距离、物距M、近视屈光度三者关系调整屏幕画面距离，其中，物距M、屏幕画面距离、近视屈光度的调节关系如表3所示。
表3
物距M/mm 屏幕画面距离/mm 近视屈光度
3.4 5000 0.2D
3.5 3000 0.3D
3.7 1500 0.7D
4.0 1000 1D
4.8 500 2D
5.6 330 3D
6.3 250 4D
10.1 100 10D
在本公开实施例中，可以依据表3中物距M、屏幕画面距离、近视屈光度的调节关系，调整物距、屏幕画面距离，如调整VR或AR眼保仪中的屏幕画面距离和物距M。在播放VR画面时，在变距调节的基础上，适时地有策略地对画面进行拉远或拉近，可以根据是否监测到眯眼动作，来测试用户视力极限，从而判断用户的视力改善情况，进而实时地调整调距矫正策略。
在一种实施方式中，表2、表3对应图15a-图15c的成像系统的调节关系。
由于眯眼动作会使得眼部反光情况发生变化，因此，在硬件层面使用红外发光器件照射人眼，再用光电转换器件感应反光变化的方式，通过成像调整装置，或者在成像调整装置的基础上搭建基于传感器的眼动追踪电路，或者在相关技术的眼动追踪装置的基础上搭建成像调整装置，或者在成像调整装置的基础上搭建眼部状态获取装置，可以有效的识别眯眼或睁眼动作。在软件层面设计相应的反馈架构(包括视力评估程序和调距调节策略程序)，动态调整调距矫正策略便得以顺利实现，反馈架构参考图19所示。
在一种实施方式中，如图19所示，执行上述方法的控制装置中分配计时寄存器来存储计时信息，在控制装置中配置视力评估程序和调距策略调整程序，成像调整方法如图20所示，包括：
步骤S11：触发视力评估程序；
步骤S11中，当计时寄存器存储的状态表示计时器到达时，触发视力评 估程序。如用户使用时长达大于等于预设的调整周期触发视力评估程序，或者距离上一次调整的时间间隔大于等于预设的调整周期的N倍(N≥1)时，可以触发视力评估程序。
或者，步骤S11中，可以基于电信号判定眼部状态为眯眼状态时触发视力评估程序。
基于电信号判定眼部状态可以基于电信号和连续接收电信号的时长或次数来判定。例如，如果接收的电信号与眼部状态的关系设定为电信号为高电平时对应用于眼部状态为眯眼状态，则当接收的电信号为高电平并且连续接收高电平的次数超过预设次数或超过预设时长时，则判定眼部状态为眯眼状态。
本公开实施例中，预设的调整周期可根据实际需要设定，在此不做限定。例如，预设的调整周期为2天、2个月或2个小时。
步骤S11中由计时寄存器触发视力评估程序之后，所述成像调整方法还可包括将计时器清零，并进入下一个周期的计时。可选地，当基于电信号判定眼部状态为眯眼状态时触发视力评估程序后，可以将计时器清零，并进入下一个周期的计时。
步骤S12：设置成像系统成像面的初始位置。
步骤S12包括：视力评估程序将物距调整至与用户最初视力相匹配的距离。
在本公开实施例中，用户最初视力相匹配的距离，可以为正常情况视力水平物距的距离，或者可以是针对某一用户一开始设置的物距，或者用户上次矫正后的物距。
在本公开实施例中，近视屈光度与物距对应关系可以参考上面表2所示，例如，最初视力为1D，相匹配的距离为4.0mm；当前视力为2D，相匹配的距离为4.8mm。
如果以0.01D为单位进行移动，由2D初始化到1D，则需要控制驱动装置移动(2D-1D)/0.01D＝100次。在本步骤中不限于以0.01D为单位进行移动，或者可以直接控制驱动装置一次性移动至最初视力相匹配的距离。
步骤S13：根据监测到的用户眼部状态控制驱动装置调整成像系统中成像透镜以调整成像系统成像面的位置。
步骤S13包括：视力评估程序接收电信号，根据电信号判断眼部状态，根据眼部状态调整成像系统的成像面位置。
根据眼部状态调整调整成像系统的成像面位置，包括：视力评估程序根据监测到的用户眼部状态控制驱动装置以预设的近视屈光度为单位调整物距。
步骤S13中视力评估程序检测控制装置从比较装置接收到的逻辑值，如果逻辑值为1则判定为眯眼，如果逻辑值为0则判定为睁眼。监测睁眼或眯眼由上面实施例所述的发光器、光电转换器件、比较装置、控制装置来执行，参考上面实施例的描述，在此不再赘述。
本公开实施例中，预设的近视屈光度可以但不限于0.01D，近视屈光度与物距的光学关系参考上面所述，在此不再赘述。
本公开实施例中，以15a-图15c所示的成像系统为例进行说明，当监测用户一直处于睁眼状态，则判定未达到用户的用眼上限，继续控制驱动装置以预设的近视屈光度为单位移动第二成像透镜L2；当监测到用户眯眼时，则判定已达到用户的用眼上限，控制驱动装置停止对第二成像透镜L2的移动。如图15a-图15c所示，假设物距M的初始位置为M2(如图15c所示)，则视觉评估程序控制驱动装置调整成像透镜L2的位置，使物距M逐渐减小，当物距M的值为M1时(如图15a所示)，监测到用户眼部状态为眯眼时，则停止对第二成像透镜L2的移动。
例如，初始化后视力为3D，对应的物距M为5.6mm(图15中的M2)，则只要监测到用户没有眯眼，则控制驱动装置以近视屈光度0.01D为单位减小物距M，一旦监测到用户眯眼，则控制驱动装置停止对第二成像透镜L2的移动，例如监测到用户眯眼时移动次数为200次，则此时对应的屈光度为1D，对应的物距为M为4.0mm(图15中的M1)。
可选地，本公开实施例中，控制驱动装置停止对二成像透镜L2的移动之后，还包括：将移动次数发送至调距策略调整程序。
本公开实施例中，视觉评估程序所记录的移动次数是用户用眼上限的次 数，如初始化物距5.6mm，所对应的屈光度为3D；移动200次以后监测到用眼上限，可以理解为用户视觉评估结果，所对应的物距为4mm，所对应的屈光度为1D。
可选地，上述步骤S13之后，还包括：调距策略调整程序根据来自视力评估程序的移动次数执行策略调整。
其中，上面所述的根据调整后的成像面的位置进行策略调整，包括：调距策略调整程序根据来自视力评估程序的移动次数执行策略调整。
本公开实施例中，调距调整程序执行策略调整时依据上面表3中的物距M、屏幕画面距离、近视屈光度的调节关系以及初始物距和移动次数进行调整。例如，当移动次数为200次时，调距调整程序根据初始视力3D和移动次数200确定用户视力评估结果所对应的近视屈光度为1D，则根据近视屈光度1D进行策略调整。根据用户视力评估结果所对应的近视屈光度进行策略调整，可以按预设周期调整物距(即按预设周期调整成像面位置)，比如，与近视屈光度1D对应的调整策略为：预设周期为30分钟，10分钟通过调整物距将屏幕画面距离调整为800mm，接下来的十分钟通过调整物距将平面画面距离调整为400mm，再接下来的十分钟将屏幕画面距离调整为600mm，第二个周期开始时将屏幕画面距离调整为800mm，依次往复。
可选地，本公开实施例中调距策略调整程序以子函数的形式嵌套于原有的物距调整程序中，根据视力评估程序返回的移动次数，对主函数中的调距函数施加偏移量。
图20所示的步骤S11-步骤S13可以理解为依据监测到的眯眼或睁眼的状态进行视力评估，最终得到一个用户视力评估结果，后续由调距调整程序根据此视力评估结果执行策略调整，按照调整后的矫正策略进行实时、自动的视力矫正。由于计时寄存器、视力评估装置均设置在控制装置中，所以执行步骤S11-步骤S13的主体可以理解为由控制装置执行。调整后的矫正策略可以包括：根据视力评估结果按照预设周期调整成像面的位置，在预设周期内，按照预设的距离调整成像面的位置。例如，预设周期为30分钟或10分钟，可以通过调整成像系统中成像透镜的位置对成像面的位置进行调整。如果是VA或AR眼保仪，调整成像透镜的位置的同时也调整了屏幕画面距离， 例如，通过调整成像透镜的位置，预设周期为30分钟，一个周期内屏幕画面距离分别为10分钟300米，10分钟800米，10分钟600米。
在本公开实施例中，在调距调整程序根据视力评估结果执行策略调整，根据调整后的矫正策略进行矫正的过程中，当监测到用户眼部状态为眯眼状态时，可以触发视力评估程序进行视力评估，由视力评估程序得到新的视力评估结果后，调节调整程序按照与新的视力评估结果对应的策略调整进行视力矫正。
需要说明的是，调距调整程序，针对视力评估程序得出的视力评估结果都有对应的调整策略，矫正调整策略可以根据实际情况来设定，在此不做限定。
在一些实施例中，本公开成像面调的整方法可以应用于实时监控用户视力，如图21所示，包括：
步骤S21：监测到用户眯眼时，触发成像面调整。
步骤S21可以包括控制装置接收到比较装置的电平为高电平，或者接收到的电信号高于第一预设电信号，则控制驱动装置驱动光学系统中的成像透镜调整光路。
例如，第一预设电信号为680mV。调整光路方式如上面调整成像透镜与屏幕之间的物距与近视屈光度的关系进行调整，如以0.01D为单位移动光学系统中的成像透镜。
步骤S21中驱动成像透镜调整光路(即调整成像系统的成像面的位置)时，还记录移动成像透镜的次数。
步骤S22：监测到用户睁眼时，停止成像面调整。
步骤S22可以包括：控制装置接收到比较装置的电平为低电平，或者接收到的电信号低于第二预设电信号，则控制驱动装置停止驱动光学系统中的成像透镜。
如果触发成像面调整之前的近视屈光度为1D，对应的物距为4.0mm，移动100次后停止调整，参考表2所示，调整之后的近视屈光度为2D，对应的物距为4.8mm。
步骤S22之后可以按照停止成像面调整时所对应的眼睛屈光度所对应的矫正策略进行矫正。如按照近视屈光度2D所对应的矫正策略进行视力矫正，可以包括按照与近视屈光度2D所对应的周期调整屏幕画面距离。
在本公开实施例中，屏幕画面距离可以与近视屈光度和物距相对应，对应关系参考表3所示。
在本公开实施例中，执行矫正策略，在使用舒适的基础上，可以更好的保护眼睛，可以按照预设周期设置屏幕画面距离，例如，预设周期为40分钟，10分钟屏幕画面距离为500mm，接下来的10分钟屏幕画面距离为1000mm，接下来的10分钟屏幕画面距离为1500mm，下面一个10分钟的屏幕画面距离分别为1000mm。
本公开实施例还提供一种非瞬态计算机可读存储介质，存储介质设置为存储计算机程序指令，其中，计算机程序指令运行时可实现上面任意一项所述的成像调整方法。
本公开实施例提供的一种成像调整装置及方法、可穿戴设备、存储介质，通过基于用户眼部反射的第二光线进行光电转换生成电信号，根据电信号判断眼部状态，根据眼部状态来调整由光学系统和眼睛构成的成像系统的成像面；能够通过用户眯眼、睁眼的行为动作来调整光学系统的成像面位置，从而可以及时、自动的对用户视力进行监测和矫正，以便根据监测结果及时、自动的调整成像位置，提高使用者舒适度。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块 或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
本公开实施例附图只涉及本公开实施例涉及到的结构，其他结构可参考通常设计。
在不冲突的情况下，本公开实施例的实施例即实施例中的特征可以相互组合以得到新的实施例。
虽然本公开实施例所揭露的实施方式如上，但所述的内容仅为便于理解本公开实施例而采用的实施方式，并非用以限定本公开实施例。任何本公开实施例所属领域内的技术人员，在不脱离本公开实施例所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本公开实施例的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (15)

  1. 一种成像调整装置，应用于调整由光学系统与用户眼睛构成的成像系统的成像面，包括：发光器件、光电转换器件、控制装置、驱动装置；
    所述发光器件，设置为发射第一光线，使所述第一光线照射到用户眼部；
    所述光电转换器件，设置为基于用户眼部反射的第二光线进行光电转换生成电信号，并将生成的电信号提供给所述控制装置；
    所述控制装置，设置为基于所述电信号判断用户眼部状态，根据用户眼部状态控制所述驱动装置工作；
    所述驱动装置，设置为在所述控制装置的控制下调整所述成像系统成像面的位置。
  2. 根据权利要求1所述的成像调整装置，还包括比较装置；
    所述光电转换器件，设置为将生成的所述电信号提供给所述比较装置；
    所述比较装置，设置为将所述光电转换器件生成的所述电信号与预设的电信号比较，生成比较结果信号，将所述比较结果信号发送给所述控制装置；
    所述控制装置，是设置为根据所述比较结果信号控制所述驱动装置工作。
  3. 根据权利要求2所述的成像调整装置，还包括滤波装置和信号放大装置；
    所述滤波装置，与所述光电转换器件和所述信号放大装置连接，设置为对所述光电转换器件生成的所述电信号进行滤波；
    所述信号放大装置，与所述滤波装置连接和所述比较装置连接，设置为对滤波后的信号进行信号放大后，将放大后的信号提供给所述比较装置。
  4. 根据权利要求1-3任意一项所述的成像调整装置，其中，所述光电转换器件包括光敏三级管和信号转换电阻；
    所述光敏三极管的集电极连接至所述信号转换电阻，所述光敏三级管与所述信号转换电阻的连接节点作为所述光电转换器件的输出端。
  5. 根据权利要求1所述的成像调整装置，其中，所述驱动装置包括物距调节电机；
    所述物距调节电机，设置为在所述控制装置的控制下调整所述光学系统中成像透镜的位置。
  6. 一种可穿戴设备，包括光学系统以及如权利要求1-5任意一项所述的成像调整装置，所述成像调整装置设置为调整由光学系统与用户眼睛构成的成像系统的成像面。
  7. 根据权利要求6所述的可穿戴设备，还包括屏幕；
    所述屏幕的显示面朝向所述光学系统。
  8. 根据权利要求7所述的可穿戴设备，其中，所述光学系统包括第一成像透镜、第二成像透镜；
    所述第一成像透镜，设置于眼部与所述第二成像透镜之间；
    所述第二成像透镜，设置于所述第一成像透镜与所述屏幕之间；
    所述成像调整装置，设置为调整所述第一成像透镜或所述第二成像透镜的位置，从而调整由所述光学系统和眼睛构成的成像系统成像面的位置。
  9. 一种成像调整方法，应用于如权利要求1-5任一项所述的成像调整装置，包括：
    发射第一光线，使所述第一光线照射到用户眼部；
    基于对第二光线光电转换后生成的电信号判断用户眼部状态，所述第二光线为第一光线照射到用户眼部后，用户眼部反射的光线；
    根据用户眼部状态调整所述成像系统成像面的位置。
  10. 根据权利要求9所述的成像调整方法，还包括：
    设置所述成像系统成像面的初始位置，所述初始位置为与用户初始视力相匹配的位置。
  11. 根据权利要求9所述的成像调整方法，其中，所述用户眼部状态包括：用户眯眼状态、用户睁眼状态、用户视力评估结果。
  12. 根据权利要求11所述的成像调整方法，根据用户眼部状态调整所述成像系统成像面的位置之后，还包括：
    根据所述视力评估结果按照预设周期调整成像面的位置。
  13. 根据权利要求10所述的成像调整方法，其中，所述设置所述成像系统成像面的初始位置，包括：在满足触发条件时，设置所述成像系统成像面的初始位置，其中，所述触发条件包括以下其中一种或多种：
    使用时长大于或等于预设的调整周期；
    距离上一次调整的时间间隔大于或等于预设的调整周期的N倍，N≥1；
    所判定的眼部状态为预设的眼部状态。
  14. 根据权利要求10所述的成像调整方法，其中，所述光学系统包括第一成像透镜、第二成像透镜；所述成像系统还包括屏幕，所述第一成像透镜位于所屏幕与用户眼睛之间，所述第二成像透镜位于所述第一成像透镜与所述屏幕之间；
    所述调整所述成像系统成像面与用户眼部之间的距离，包括：
    调整所述第二成像透镜与所述屏幕之间的距离。
  15. 一种非瞬态计算机可读存储介质，所述存储介质设置为存储计算机程序指令，其中，所述计算机程序指令运行时可实现权利要求9-14中任意一项所述的成像调整方法。
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