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WO1999044846A1 - Vehicule a champ de vision ameliore, dispositif et procede servant a reduire l'eblouissement - Google Patents

Vehicule a champ de vision ameliore, dispositif et procede servant a reduire l'eblouissement Download PDF

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Publication number
WO1999044846A1
WO1999044846A1 PCT/JP1998/001863 JP9801863W WO9944846A1 WO 1999044846 A1 WO1999044846 A1 WO 1999044846A1 JP 9801863 W JP9801863 W JP 9801863W WO 9944846 A1 WO9944846 A1 WO 9944846A1
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WO
WIPO (PCT)
Prior art keywords
light
section
dimming
glass
eye
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Ceased
Application number
PCT/JP1998/001863
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English (en)
Japanese (ja)
Inventor
Yoshikazu Ichiyama
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Individual
Original Assignee
Individual
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Publication of WO1999044846A1 publication Critical patent/WO1999044846A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector

Definitions

  • the present invention relates to a vehicle, an anti-glare device and a method for improving visibility in front and around by reducing strong incident light from an external light source.
  • the present invention relates to a vehicle, an anti-glare device, and a method for improving external visibility by selectively dimming only light rays incident on an occupant's eyes from an external light source that is a source of the vehicle.
  • an object of the present invention is to provide an anti-glare device and method capable of selectively illuminating or blocking only light rays having an intensity of a certain level or higher that impede the occupant's external visibility and entering the occupant's eyes. And to provide vehicles at low cost.
  • the present invention provides a vehicle, an anti-glare device and a method capable of selectively dimming or blocking light rays incident on the eyes of these occupants based on the fact that they are local.
  • the vehicle uses a dimmable window glass that can be dimmed separately, and furthermore, a dimming window drive unit and a means for identifying the dimmable window glass located between the occupant's eyes and the external light source.
  • a general control unit that controls the entire system, identifies the section of the dimming window glass interposed between the external strong light source and the eye of the anti-glare subject, and controls the dimming window driving section.
  • the dimmable window glass is composed of a liquid crystal material that has multiple sections and is sealed between the electrodes. It can control the light transmittance by applying a voltage between the electrodes, and is widely used in display devices and the like. Is a well-known technique.
  • Each of these sections is electrically selected by the dimming window driver, and is electrically controlled to individually adjust and control the light transmittance.
  • the most important point in realizing the system is to specify in real time the section on the dimming window through which the light beam entering the occupant's eye passes with respect to the moving external light source. Means are proposed.
  • the first means is to attach a head mount sensor to the occupant to be anti-glare, place the sensor near the eyes, and modulate the light transmittance for each section in such a way that the section of the dimming window can be specified. Then, the section whose light transmittance is changed in the same manner as the output fluctuation of the head mount sensor is identified as the section to be dimmed.
  • the second means is to install a beam direction detector on the dashboard near the occupant or on the ceiling to monitor the direction of the incident beam.
  • the dimming control is performed by specifying the corresponding section on the dimming window from the output of the beam direction detector.
  • the division on the dimming window to be controlled for dimming from the output of the beam direction detector depends on a predetermined correspondence map, but a learning process is applied to form this correspondence map.
  • the first method is used in the learning process for automation.
  • the first method to identify the dimming window section can directly identify the dimming window section, and requires any adjustments or other processing in the system, such as increasing the number of head-mounted sensors, moving them, and so on. And not.
  • the second means requires a correspondence map between the beam direction detector output and the dimming window section, but this is also automatically formed by the learning process using the first means, and these systems are used. No adjustment or setting of elements is required.
  • the constituent elements are installed and moved flexibly, and only light rays incident on the eyes of the occupant are selectively dimmed or blocked.
  • a vehicle and an anti-glare device and method capable of improving external visibility can be realized at low cost.
  • Fig. 1 shows the background of the present invention and the basic concept, showing the case in which the car and the occupant, and the headlights of other cars before and after, are occupied by the front headlight through the windshield.
  • the light beam enters the eyes of the occupant, and from the rear headlights enters the occupant's eyes through the rear window and knock mirror, which may impair the occupant's external visibility.
  • these rays illuminate almost the entire car, but if they are limited to rays that enter the occupant's eyes, they may pass through extremely local parts of the front and rear windows. Also shown.
  • FIG. 1 shows the background of the present invention and the basic concept, showing the case in which the car and the occupant, and the headlights of other cars before and after, are occupied by the front headlight through the windshield.
  • the light beam enters the eyes of the occupant, and from the rear headlights enters the occupant's eyes through the rear window and knock mirror, which may impair the occupant's external visibility.
  • FIG. 2 is a view for explaining the first embodiment of the present invention, in which a dimmable glass that can be dimmed dimmably is used for the window glass, so that the occupant can arrange the photodetector near the eyes.
  • Attach a suitable head mount sensor FIG. 3 shows an example of a head mount sensor in which a light detecting element is held on a spectacle-like support so as to be arranged around the eye.
  • Figure 4 shows the case where the light transmittance of each section of the dimming window is changed in a binary manner to control the average light transmittance. Then, an example of specifying the classification by comparing it with the output of the head mount sensor is shown.
  • Figure 5 shows the case where the light transmittance of each section of the dimming window is changed in a binary manner to control the average light transmittance.
  • the light transmittance of the light is emphasized and the timing is changed for each section with modulation, and the output of the head mount sensor is output.
  • 5 shows an example of a following mode to be compared with the following.
  • Fig. 6 shows a simple flow diagram for controlling the light transmittance by specifying the dimming window section using a head-mounted sensor.
  • FIG. 7 shows an example of a head mount sensor and a light detecting element in which a reflective element is held on a spectacle-like support so as to be arranged around the eye.
  • FIG. 8 shows the structure of a head-mounted sensor in which a light-blocking filter is arranged on the light-sensing element of the head-mounted sensor so that it does not pass red light.
  • FIG. 9 is a view for explaining a second embodiment of the present invention, in which a dimming glass that can be controlled in a piecewise manner is used for a rear window, and a light beam incident on an occupant's eye through a rearview mirror is used as a head mount sensor. An example is shown in which the dimming control is selectively performed and the light control is selectively performed.
  • FIG. 10 is a view for explaining a third embodiment of the present invention, which has a light direction detector and a head mount sensor, and identifies a dimming window in combination with a learning process to identify an occupant's eye.
  • An example is shown in which dimming control is selectively performed on a light beam incident on.
  • Figure 11 shows a flow diagram including a learning process for forming a correspondence map showing the correspondence between the beam direction detector output and the dimming window section.
  • Fig. 12 shows an example of a beam direction detector having a small aperture and an image sensor.
  • Fig. 13 shows an example of a beam direction detector having a simple imaging optical system and an image sensor.
  • Fig. 14 shows an example of setting the light transmittance stepwise in the dimming section.
  • FIG. 15 is a diagram for explaining a fourth embodiment of the present invention, and shows a configuration example in which a light control rear mirror is controlled using a light beam direction detector and a head mount sensor.
  • FIG. 16 is a diagram for explaining the fifth embodiment of the present invention, and shows a configuration example in which dimming control of the front and rear windows is simultaneously performed using a light beam direction detector and a head mount sensor.
  • Fig. 1 shows the structure of a vehicle window glass, rearview mirror, etc. for viewing outside, the occupants, and also the external light source, etc., to explain the background and basic concept of the present invention.
  • headlights 15 and 17 of other vehicles are located before and after the vehicle 10 and light beams indicated by numbers 16 and 18 are incident on the eyes of the occupant 11 from them.
  • Ray 16 passes through the front window 12, and ray 18 enters the occupant's 11 eye through the rear window 13 and the knock mirror 14.
  • the light from the headlights of other vehicles is incident from the front and rear at night, but sunlight is also incident during the day, which significantly impairs the visibility especially outside. There are many.
  • some window glasses are colored to reduce the light transmittance, or some rearview mirrors can change the reflectance during the day and at night.
  • the light transmittance of the entire window is reduced uniformly too much to fear the incident light, the external visibility will be significantly reduced.
  • only the rays incident on the occupant's eyes are harmful regardless of the sunlight or the headlights of other vehicles, and they are local when considered only when passing through the window glass. Based on the fact that only the rays incident on these occupants' eyes are selectively dimmed or 63 Consider a vehicle that can block light and anti-glare devices and methods. That is, in Fig.
  • the headlights 15 and 17 illuminate the entire vehicle 10 but the rays 16 incident on the eyes of the occupant 11 pass through the front window 12
  • a vehicle or an anti-glare device or method for controlling the light transmittance of only the section 20, etc., when the section 19 and the light beam 18 pass through the rear window # 13 is proposed.
  • the section 19 where the light beam 16 passes through the front window, or the section 20 where the light beam 18 passes through the rear window, etc. are specified and controlled, and their light transmittance is controlled.
  • Light rays 16 and 18 entering the eyes of the occupant 11 from the headlights 15 and 17 are selectively reduced to improve the external visibility of the occupant 11.
  • FIG. 2 is a functional block diagram of the first embodiment of the present invention, showing an example in which dimming control of a front window is performed using a head-mounted sensor.
  • the basic configuration consists of at least a dimming glass optical system, a dimming glass driving unit, a head mount sensor, and a general control unit.
  • Light control glass optics are electrically composed of dimming lath with controllable capacity plurality of divided light transmittance selectable in and electrically independently front window 1 2.
  • the dimming glass is composed of liquid crystal and electrodes encapsulated, and is a well-known technology for display devices and so on, and its description is omitted.
  • the dimming glass drive unit 21 is instructed by the section of the front window 12 and the light transmittance of the section, electrically selects the section, and generates an electric signal corresponding to the target light transmittance. Is added to control and adjust the light transmittance in a piecewise manner.
  • the light transmittance of the light control glass section changes according to the applied voltage.
  • the voltage is changed and controlled in an analog manner so as to conform to the desired light transmittance, or the applied voltage is binary. That is, there is a method of controlling the average light transmittance by changing and controlling the duration of each of high and low on the time axis as two types of light transmittance, high and low.
  • the latter method is advantageous in terms of cost and the description of the present invention is exclusively based on the latter method.
  • the present invention can also be realized by the former method.
  • the overall control unit 22 performs various kinds of settings such as classification and identification in cooperation with the head mount sensor 24, start / stop of the whole system, setting of the light intensity level to be anti-glare, or level of dimming control. Controls the operation of the entire system.
  • the head mount sensor 24 detects the intensity of the light beam incident on the eyes of the occupant 11 as a structure in which the light detecting element 25 is arranged near the eyes when worn by the occupant 11.
  • the light beam 16 entering the eyes of the occupant 11 from the headlight 15 of another vehicle through the front window 12 is detected by the head mount sensor 24, and the intensity is detected by the brightness sensor.
  • the general control unit 22 instructs the light control glass drive unit 21 to identify each part of the front window 12
  • the light transmittance is modulated as described above, and the section 19 through which the light beam 16 passes is specified based on the variation of the light intensity detected by the head mount sensor 124, and the position of the section and the degree of decrease in the light transmittance are determined. Instruct the light control glass drive unit 21 to reduce the light transmittance and reduce the intensity of the light beam 16 incident on the occupant 11's eye.
  • the brightness sensor 23 has a light detection element and is arranged so that the incident light does not enter directly, and detects the surrounding brightness.
  • a head mount sensor 24 has a light-sensitive element 25 attached to a spectacle-like support portion 26 around the eye. It is arranged on the side and detects the intensity of the light beam incident on the eye.
  • Numeral 27 is the output line of the photodetector 25, but wireless transmission is possible using electromagnetic waves, infrared rays, and the like.
  • the accuracy can be further improved if the transparent photodetector is configured directly on the spectacle lens and placed in front of the eye.
  • number 41 indicates the reference timing
  • numbers 42, 43, and 44 indicate the voltage waveforms applied to each section.
  • the voltage applied to each section of the light control glass is such that the higher the voltage, the higher the light transmittance, and the lower the voltage, the lower the light transmittance.
  • the voltage of each section decreases the voltage in a short-time pulse manner at different timings based on the reference timing 41 to reduce the light transmittance. If a strong light ray 16 enters the eyes of the occupant 1 1, the force detected by the head mount sensor 2 4 is output. is there.
  • the number 45 indicates the output voltage from the head mount sensor 124.
  • the section where the transmittance is reduced can be identified as the section through which the light beam 16 passes.
  • the category corresponding to No. 43 corresponds to the voltage waveform No. 47 that modulates the light transmittance and the No. 49, which is the change in the output waveform of the head mount sensor 24. ing.
  • section identification is directly possible by modulating the light transmittance so that each section can be identified, and monitoring the output of the head mount sensor 24.
  • the number of sections is small as a whole, it is possible to change the timing of light transmittance modulation in all sections, and drive is possible.
  • Fig. 5 is a diagram for explaining the control of each section after the section is specified, and the method of section following in accordance with the movement of the light source.
  • the section indicated by No. 43 is determined to be the section to be dimmed
  • the average amount of light is reduced by increasing the ratio of dimming within the reference timing.
  • the section where the light is dimmed is shown as No. 53 in the output of the head mount sensor 1 indicated by No. 51.
  • the level increases slightly, and the output of the head mount sensor decreases as indicated by the number 55 at the same timing as the timing 48 when the light transmittance of the section indicated by the number 44 decreases. In this way, it is easy to monitor and follow the movement of the section to be dimmed due to the movement of the light source.
  • the sections to be searched by modulating the light transmittance as shown by numbers 42 and 44 can be limited to the area around the current section 43.
  • Fig. 7 describes an example in which a reflection element is used to make wireless.
  • the head mount sensor 70 is assumed to have a reflective element 71 on a spectacle-like support 72, and is reflected to the periphery of the eye so that a ray 16 incident on the eye is reflected.
  • the element 71 is arranged.
  • a light detecting element 73 is arranged above or in front of the occupant 11 and near the upper side of the front window 12 so that the light beam 16 incident on the occupant 11's eye is reflected by the reflecting element 71 (number 7 4) Then, the light is detected by the photodetector 73.
  • the reflection element 71 Since the relative relationship between the reflection element 71 and the light detection element 73 is undefined, the reflection element 71 has a structure in which the direction is determined to some extent and irregularly reflected, or a curved surface shape which concentrates and reflects in a certain area. Is desirable. An example of selecting light beams to be dimmed by color will be described with reference to FIG. According to the first embodiment shown in FIG. 2, the head mount sensor 24 detects a harmful light beam and selectively dims it in an extremely short time, thereby improving the external visibility of the occupant. However, red is generally used for stop lamps or emergency lights in automobiles, etc.
  • a filter 81 for preventing the transmission of red light is disposed in the light detecting element 25 of the head mount sensor 24, and the head mount sensor 24 is configured to detect only light beams other than red light. I do.
  • the head mount sensor 2 does not output red light, so if the external light source is only red, the dimming function does not work and the eyes of the occupants are unified with a red system. The danger signal is incident without dimming and does not impair the occupants' perception.
  • FIG. 9 shows a functional block diagram of the second embodiment of the present invention, in which the eyes of an occupant are viewed from behind a vehicle. An example will be described in which the light rays incident on the light are selectively reduced.
  • the basic configuration is composed of at least a dimming glass optical system, a dimming glass driving unit, a head mount sensor, and a general control unit. Only the configuration of the light control glass optical system differs slightly from the figure.
  • the dimming glass optical system consists of a rear window 13 composed of dimming glass that can be dimmed in a piecewise manner and a normal back mirror 14.
  • FIG. 10 schematically shows a third embodiment of the present invention.
  • the dimming control using a head-mounted sensor makes it easy to identify the section, but on the other hand, there remains a problem that mounting is troublesome.
  • a beam direction detector was used to overcome this problem.
  • This structure eliminates the need for a head mount sensor after the learning process.
  • This figure is an example of application to the front window 12 as in the first embodiment shown in Fig. 2.
  • the basic configuration consists of at least a light control glass optical system, a light control glass drive unit, a head mount sensor, and a light beam direction. It consists of a detector, a general control unit, and so on.
  • the dimming glass optical system is a front window 12 composed of dimming glass that can be dimmed in the same way as in Fig. 2, and the other dimming glass drive unit 21 and the head mount sensor 24 are also included. This is the same as the first embodiment shown in FIG.
  • the beam direction detector 120 is located near the occupant 11 around the front window 12 and is composed of a small aperture and a two-dimensional image sensor.
  • the light spot to be created is detected at the pixel position of the built-in image sensor to determine the direction of the light beam.
  • ambient brightness is detected based on an average output level other than the light spot.
  • the general control unit 101 cooperates with the head mount sensor 24 and the beam direction detector 120. It supervises the operation of the system as a whole, specifying various categories, starting and stopping the entire system, setting the light intensity level to be used for anti-glare, or setting the level of dimming control.
  • the direction of the light beam 16 is detected by the light direction detector 120 and the general control unit 101, and the corresponding map is referred to.
  • the dimming control is performed by specifying the section of the front window 12.
  • the correspondence map showing the correspondence between the output of the beam direction detector 120 and the section of the front window 12 is a head. It is automatically formed by learning using the mount sensor 24.
  • the overall control unit 101 monitors the output of the beam direction detector 120 to detect the surrounding brightness, When a light beam with a predetermined level or higher than the ambient brightness is detected, the pixel position on the image sensor of the light beam direction detector 120 where the light spot created by the light beam is located is defined as the light beam direction, and the pixel position and the corresponding map are used. , The section of the window 12 is specified as the section 19 to be dimmed.
  • the ray 102 incident on the ray direction detector 120 originates from the same light source 15 but is strictly different from the ray 16 incident on the eyes of the occupant 11 and therefore passes through the front window 12 The classification is also different.
  • the distance between the occupant 11 and the headlight 15 is at least several meters, while the distance between the occupant 11 and the beam direction detector 120 is within several tens of centimeters. 16 and 102 can be approximated as almost parallel, and the output of the beam direction detector 120 can be used to estimate the direction of the beam 16 incident on the occupant's 11 eye. Therefore, if the correspondence between the pixel position in the image sensor, which is the output of the light direction detector 120, and the division in the front window 122 is correctly given, the output of the light direction detector 120 is used as the output of the front window 122. Can be specified.
  • the relationship between this pixel position and the divisions in the front window 12 may be given as a correspondence map from the beginning, but the position of the beam direction detector 120, the posture of the occupant 11 or the occupant 11 It is impossible to give a fixed map when considering the change of Noh.
  • the correspondence map is automatically formed by learning using the means for specifying the division by the head mount sensor 24, and after the correspondence map is completed. Is operated without the head mount sensor 24.
  • FIG. 11 shows a flowchart for forming a correspondence map by a learning process. As shown in the figure, it takes time to form corresponding maps for all pixel positions or all sections of the front window.
  • the general control unit 101 can complete the corresponding map by interpolation work.
  • the process of specifying the section on the front window 12 in the third embodiment shown in FIG. 10 will be described in further detail.
  • the ray direction detector 120 outputs the direction of the ray 16 as the pixel position of the built-in image sensor, and the overall control unit 101 sends the front window through the dimming glass control unit 21.
  • the light transmittance of each section in section 12 is modulated to be identifiable, and section 19 is specified from the output fluctuation mode of the head mount sensor 24.
  • the overall control unit 101 stores the correspondence between the pixel position and the specified section 19 and controls the dimming of the section 19.
  • the light direction detector detects the distance to the light source together with the direction of the light beam and learns the correspondence map between the light direction and the distance to the light source and the light control glass section by learning. Let's make it.
  • Distance to light source In order to detect separation, two identical light direction detectors are placed depending on the position of the lens that forms the imaging optical system that minimizes the light spot by using an imaging optical system as the light direction detector. It is also possible to use the difference between the directions of the light beams output by both.
  • the distance from the light source it is not necessary to calculate the distance from the light source, and it is sufficient to obtain the parameters required to specify it.
  • the difference between the beam directions and their outputs and the corresponding map between the dimmable glass sections or the two outputs and the dimmable glass section are calculated. The purpose can be achieved if it is formed by the learning process as it is.
  • FIG. 9 shows the structure of the beam direction detector.
  • the beam direction detector 120 is configured by incorporating a two-dimensional image sensor 123 in a housing 121 having a minute opening 122.
  • the position of the light spot 1 25 formed on the image sensor 1 23 by the light beam 1 2 4 radiated from the small aperture 1 2 2 is detected by the pixels composing the image sensor 1 2 3. Let the position be the direction of ray 1 2 4.
  • the beam direction detector 130 shown in FIG. 13 has an imaging lens 13 2 in place of the minute aperture 122 shown in FIG.
  • the light beam direction detector 130 is constructed by incorporating a two-dimensional image sensor 133 inside a housing 131 having an imaging lens 132 in an opening.
  • the position of the light spot 135 formed on the image sensor 133 by the light beam 134 irradiated by the imaging lens 133 is detected by the pixels constituting the image sensor 133, and the position of the pixel is determined by the pixel position.
  • the direction of the beam 1 34 is assumed. Although the principle and operation of the beam direction detectors shown in Figs. 12 and 13 are the same, the size of a commonly used CCD image sensor is several millimeters square. Therefore, the beam direction detector 130 shown in FIG. 13 which can make the light spot 135 on the image sensor 133 smaller may be practical.
  • the image sensor built into these beam direction detectors outputs color information in addition to the pixel position of the light spot as an image sensor corresponding to a color image, and the general control unit uses the color information for emergency use.
  • the degree of dimming can be reduced and controlled so that information recognition for safety is not impaired. included.
  • Fig. 14 shows an example of setting the light transmittance stepwise in the dimming section.
  • the light transmittance is set low only for the section through which the light beam passes, the front scene seen through the window changes stepwise, and a slight unnaturalness can be denied when looking ahead.
  • dimming up to section 14 1 around it also absorbs section-specific errors.
  • the light transmittance is changed stepwise from the center to the periphery to match the surroundings, so that the front scene seen from the front window 12 has less discomfort.
  • two levels of light transmittance are set in the dimming region.
  • the basic configuration consists of at least a dimming glass optical system, a dimming glass driving unit, a head mount sensor, a beam direction detector, and a general control unit.
  • the light control glass is configured by enclosing a liquid crystal and an electrode, and is a well-known technique for display devices and the like, and therefore description thereof is omitted.
  • the beam direction detector 15 3 is placed at a position where the rearview mirror 15 1 is viewed from the side of the occupant 11 to detect the direction of the light beam 91, or at the rearview mirror 15 1 to look behind. To detect the direction of ray 18. Since the distance from the knock mirror 151 to the eyes of the occupant 11 is short and the angle change of the light beam 91 is small, it is generally difficult to detect the direction. Monitor. Figure 15 shows the latter example.
  • FIG. 16 shows a fifth embodiment of the present invention, in which a head-mounted sensor and a beam direction detector are used to deal with light beams from the front and rear of a vehicle.
  • the basic configuration in this embodiment is composed of at least a light control glass optical system, a light control glass drive unit, a head mount sensor, a light beam direction detector, and a general control unit.
  • the dimming glass optical system has a front window 12, a rear window 13 and a normal rearview mirror 14, which are made of dimming glass that can be dimmed in a piecewise manner.
  • the beam direction detector has a beam direction detector 161 for detecting the direction of the beam from the front and a beam direction detector 162 for detecting the direction of the beam from the rear. It is placed near the occupant 11 around the dove 12, the latter being mounted on the rearview mirror 14.
  • Two PCT / JP98 / 01863 light control glass drive units are used to drive and control each of the front window 12 and the rear window 13.
  • the light control glass of the front window 12 and the rear window 13 can be controlled by one light control glass drive unit assuming that the integrated light control glass is simply divided.
  • FIG. 16 does not particularly show the light control glass driving unit.
  • the head-mounted sensor 124 receives the light 16 entering the occupant's 11 eye from the front via the front window 12 and the occupant's 11 eye from the rear via the rear window 13 and the rearview mirror 14. A light beam 18 incident on is detected, and one head mount sensor 24 responds to light beams from the front and rear.
  • the overall control unit identifies the front window 12 and rear window 13 in coordination with the head-mounted sensor 24, the beam direction detectors 161, 162, starts and stops the entire system, and prevents glare. It supervises the setting of the target light intensity level or various settings such as the dimming control level and the operation of the entire system. 10 differs from the third embodiment shown in FIG. 10 in that a rear window 13, a back mirror 14, and a beam direction detector 162 for monitoring the rear are added. However, if the dimming glass is divided into a front window 12 and a rear window 13, the operation principle is exactly the same if one understands that the integrated dimming glass is merely a division.
  • the beam direction detectors 16 1 and 16 2 search for light beams 16 and 18 having a predetermined intensity or higher from the brightness while detecting the surrounding brightness.
  • the front window 12 and the rear window 13 modulate the light transmittance so that they can be identified, identify the section based on the output fluctuation of the head mounted sensor 24, and adjust the section.
  • the light is controlled so that the intensity of the light beam incident on the eyes of the occupant 11 becomes lower than a predetermined level.
  • the correspondence between the output of the beam direction output by the beam direction detectors 16 1 and 16 2 and the specified section is stored.
  • This process is repeated to form a corresponding map, and when the degree of perfection reaches a predetermined level, a part lacking the corresponding map is complemented automatically or instructed by interpolation work.
  • the classification is specified by the output of the beam direction detectors 16 1 and 16 2 and the corresponding map without using the head-mounted sensor 24. Dimming control.
  • the configuration, the principle operation, the operation, and the like of the present invention are described with reference to the embodiments. Focusing on the fact that the light is local, a vehicle that can improve external visibility by selectively reducing only harmful light by using a dimmable glass that can be dimmed in the window ⁇ A method was proposed and explained. The most important point is to identify and follow the section to be dimmed under conditions where the direction of the light beam from the outside fluctuates. However, a direct section determination method using a head-mounted sensor and a learning process are also adopted. We proposed an indirect classification estimation method using a beam direction detector.
  • the above-described apparatus and method according to the present invention are characterized by a simple configuration principle and low cost, and are further characterized by a flexible system configuration that can easily cope with fluctuations in environmental conditions such as an increase in occupants and movement of equipment. .
  • the present invention has been described by taking a car as an example, the arrangement of each component is not fixed, and it is possible to function with adaptability under arbitrarily installed conditions. It can be used for controlling unnecessary light beams in various optical devices and the like in addition to being mounted on vehicles such as automobiles. They are also important objects of the present invention.
  • the vehicle and the anti-glare device and the method for improving the external visibility according to the present invention, only the light emitted from the external light source and incident on the occupant's eyes is selectively dimmed to improve the external visibility. It provides vehicles that can be used, anti-glare devices, and application methods, and is effective for application to automobiles, trains, and aircraft. In addition, it can be applied to selective control of harmful rays incident on buildings, optical equipment, etc., not limited to vehicles.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

L'invention concerne un véhicule dont le champ de vision du conducteur est amélioré vers l'avant aussi bien que sur les côtés au moyen d'une réduction des rayons lumineux d'éblouissement intense dépassant un niveau donné, qui sont dirigés sur les yeux du conducteur et proviennent d'une source lumineuse extérieure telle que le soleil, des phares d'automobiles, etc.; d'une commande sélective du facteur de transmission qui permet d'obtenir une atténuation par une fenêtre de modulation de lumière utilisant un verre à vitres à cristaux liquides capable de moduler la lumière par sections. L'invention concerne un dispositif et un procédé servant à réduire l'éblouissement. On améliore le champ de vision du conducteur (11) en réduisant uniquement les rayons lumineux (16 et 18) dirigés sur les yeux du conducteur (11) qui proviennent de phares (15, 17) etc., en utilisant par sections un verre à vitres modulateur de lumière pour la vitre (12) avant, la vitre (13) arrière etc., et en spécifiant quelle section (19) de vitre avant (12) ou quelle section (20) de vitre arrière transmet les rayons (16) lumineux, et en réglant le facteur de transmission de la section (19 ou 20) en faisant porter au conducteur (11) un capteur monté sur la tête de celui-ci, etc., ledit capteur étant équipé d'un élément photodétecteur qui est placé à proximité des yeux du conducteur.
PCT/JP1998/001863 1998-03-04 1998-04-23 Vehicule a champ de vision ameliore, dispositif et procede servant a reduire l'eblouissement Ceased WO1999044846A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6945598 1998-03-04
JP10/69455 1998-03-04

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WO1999044846A1 true WO1999044846A1 (fr) 1999-09-10

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Cited By (8)

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GB2368403A (en) * 2000-10-26 2002-05-01 Autoliv Dev Head-up displays
JP2004093873A (ja) * 2002-08-30 2004-03-25 Asahi Glass Co Ltd 調光窓
GB2445365A (en) * 2007-01-05 2008-07-09 Michael Robert Garrard Anti-dazzle apparatus
CN103723004A (zh) * 2012-10-15 2014-04-16 华东师范大学 一种基于液晶玻璃的防眩目驾驶辅助系统及其防眩目方法
GB2557712A (en) * 2016-10-20 2018-06-27 Ford Global Tech Llc Vehicle-window-transmittance-control apparatus and method
JP2020510572A (ja) * 2017-03-01 2020-04-09 スイッチ マテリアルズ インコーポレイテッドＳｗｉｔｃｈ Ｍａｔｅｒｉａｌｓ Ｉｎｃ． 可変透過率の車両窓
CN113496197A (zh) * 2020-03-19 2021-10-12 Aptiv技术有限公司 监测车辆驾驶员视线的光学系统和方法
KR20230060591A (ko) * 2021-10-27 2023-05-08 한국자동차연구원 차량 카메라 시스템 및 그 동작 방법

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JPH01145816U (fr) * 1988-03-31 1989-10-06
JPH02117414A (ja) * 1988-10-26 1990-05-01 Mazda Motor Corp 車両の液晶式スポットバイザ
JPH0295319U (fr) * 1989-01-17 1990-07-30
JPH02216316A (ja) * 1989-02-16 1990-08-29 Nissan Motor Co Ltd 眩惑防止装置
JPH0463718A (ja) * 1990-06-30 1992-02-28 Aisin Seiki Co Ltd 窓光調光装置
JPH04127123A (ja) * 1990-09-18 1992-04-28 Toyo Commun Equip Co Ltd 減光装置
JPH04238724A (ja) * 1991-01-10 1992-08-26 Oki Electric Ind Co Ltd 防眩装置
JPH05203906A (ja) * 1992-01-29 1993-08-13 Toyota Central Res & Dev Lab Inc 防眩システム
JPH0563929U (ja) * 1992-02-07 1993-08-24 日産ディーゼル工業株式会社 電子式サンバイザー装置
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JPH06320954A (ja) * 1993-05-17 1994-11-22 Nissan Motor Co Ltd 車両用リアウィンドウ装置

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2368403A (en) * 2000-10-26 2002-05-01 Autoliv Dev Head-up displays
GB2368403B (en) * 2000-10-26 2004-04-28 Autoliv Dev Improvements in or relating to a head-up display
JP2004093873A (ja) * 2002-08-30 2004-03-25 Asahi Glass Co Ltd 調光窓
GB2445365A (en) * 2007-01-05 2008-07-09 Michael Robert Garrard Anti-dazzle apparatus
CN103723004A (zh) * 2012-10-15 2014-04-16 华东师范大学 一种基于液晶玻璃的防眩目驾驶辅助系统及其防眩目方法
US10192125B2 (en) 2016-10-20 2019-01-29 Ford Global Technologies, Llc Vehicle-window-transmittance-control apparatus and method
GB2557712A (en) * 2016-10-20 2018-06-27 Ford Global Tech Llc Vehicle-window-transmittance-control apparatus and method
US10832067B2 (en) 2016-10-20 2020-11-10 Ford Global Technologies, Llc Vehicle-window-transmittance-control apparatus and method
JP2020510572A (ja) * 2017-03-01 2020-04-09 スイッチ マテリアルズ インコーポレイテッドＳｗｉｔｃｈ Ｍａｔｅｒｉａｌｓ Ｉｎｃ． 可変透過率の車両窓
CN113496197A (zh) * 2020-03-19 2021-10-12 Aptiv技术有限公司 监测车辆驾驶员视线的光学系统和方法
CN113496197B (zh) * 2020-03-19 2024-04-12 Aptiv技术股份公司 监测车辆驾驶员视线的光学系统和方法
KR20230060591A (ko) * 2021-10-27 2023-05-08 한국자동차연구원 차량 카메라 시스템 및 그 동작 방법
KR102565627B1 (ko) * 2021-10-27 2023-08-10 한국자동차연구원 차량 카메라 시스템 및 그 동작 방법

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