WO2019061653A1 - Wearable display apparatus and vision correction method - Google Patents

Abstract

A wearable display apparatus (100) realizes vision correction. The wearable display apparatus (100) comprises two display screens (10), a refraction module (20), a processor (40) and an optical system (30). The refraction module (20) detects binocular vision of a user, and the processor (40) then automatically adjusts optical parameters of the optical system (30) correspondingly according to the binocular vision, and the user does not need to manually adjust same. Even users with different visual defects can see a clear 3D image by means of the optical system (30), thereby carrying out vision correction when the user experiences a 3D wearable display. The vision correction method comprises: a refraction module (20) detecting binocular vision of a user; a processor (40) adjusting optical parameters of an optical system (30) according to the detected binocular vision of the user; and the optical system (30) projecting a 3D image displayed on a display screen (10) to the eyes of the user.

Description

Wearable display device and vision correction method

The present application claims the priority of the prior application filed on Sep. 28, 2017, entitled "Dressable Display Device and Vision Correction Method", which is hereby incorporated by reference. This.

Technical field

The present invention relates to the field of virtual display technologies, and in particular, to a wearable display device having a vision correction function and a vision correction method.

Background technique

Currently, wearable display devices with vision correction functions, such as a head mounted display (HMD), employ near-eye display technology, which mainly enlarges and projects images on the ultra-micro display through a set of optical systems. At the same time, the binocular parallax can bring the user an immersive three-dimensional (3D) experience. However, the optical system of the prior art helmet display device is basically manually adjusted, and the user needs to manually adjust the optical parameters (such as focal length, curvature, etc.) of the optical system according to the state of vision of the user, and the user usually needs to repeat the number of times. Adjusting and trying to adjust the optical system to the appropriate optical parameters, it is obvious that this manual adjustment method is difficult to achieve precise adjustment, and the operation is inconvenient and time consuming, resulting in poor user experience, and the existing helmet The display device is also inconvenient for use by users with visual impairments.

In order to solve the above technical problems, the present invention provides a new wearable display device, which can automatically adjust the optical parameters of the optical system according to the visual state of the user, and can be quickly and conveniently used even by users with visual defects. Wearable display device to perform vision correction during the experience of 3D wear display.

Summary of the invention

Embodiments of the present invention provide a wearable display device and a vision correction method, which can automatically adjust optical parameters of an optical system according to a user's vision state without manual adjustment by a user, even if Users with different vision defects can also view clear 3D images through the optical system, thereby performing vision correction during the experience of 3D wear display, solving the problems of the wearable display device in the prior art. .

In a first aspect, a first embodiment of the present invention provides a wearable display device, two display screens, an optometry module, an optical system, and a processor, the processor and two of the display screens and the optometry module. And the optical system is electrically connected; wherein the two display screens respectively correspond to a user's eyes setting for simultaneously displaying a 3D image, and the optometry module is configured to detect a binocular vision of the user, and the optical system is used for Projecting two 3D images displayed by the display screen to the eyes of the user, the processor is configured to acquire binocular vision detected by the optometry module, and automatically adjust optical of the optical system according to the binocular vision The parameter is such that a user having different binocular vision acquires a 3D image having a predetermined sharpness through the optical system.

Wherein the wearable display device further comprises a memory, the memory pre-stored different correction programs for different vision states; the memory is connected to the processor, and the processor searches from the memory A correction program matching the current user's binocular vision is performed, and the optical parameters of the optical system are adjusted according to the correction procedure.

Wherein, the two display screens are ultra-micro display screens.

Wherein, the optical system comprises two lenses with adjustable curvature and a control circuit, each of the lenses is disposed corresponding to one of the display screens, and the processor is electrically connected to the control circuit and according to the eyes of the user Vision controls the control circuit to output a corresponding drive voltage to the lens to drive the lens to adjust to a curvature that matches the binocular vision of the user.

Wherein, the optical system comprises two lenses, each of the lenses is arranged corresponding to a display screen, and the distance between the optical display and the display screen can be independently adjusted according to the binocular vision of the user. .

Wherein the optical system further includes a sliding mechanism, two of the lenses are mounted on the sliding mechanism, and the sliding mechanism drives the two lenses to slide relative to the display screen to adjust the lens and the corresponding The distance between the display screens.

Wherein the wearable display device further includes a main body, the optometry module, the optical system, the processor, and the memory are disposed in the main body, and the display screen is mounted on the main body so as to be The user views the 3D image.

In another aspect, the present invention also provides a vision correction method that is implemented by a wearable display device. Current vision correction, the vision correction methods include:

The optometry module detects the binocular vision of the user;

The processor adjusts optical parameters of the optical system according to the detected binocular vision of the user;

The optical system projects a 3D image displayed on the display screen to both eyes of the user.

Before the step of detecting the binocular vision of the user by the optometry module, the method further includes:

The memory is pre-stored with different correction procedures for different vision states.

The step of the processor adjusting the optical parameters of the optical system according to detecting the binocular vision of the user includes:

Finding a corresponding correction procedure according to detecting the binocular vision of the user;

The optical parameters of the optical system are adjusted based on the found corrective procedure.

In summary, the wearable display device and the vision correction method provided by the embodiments of the present invention automatically check the binocular vision of the user through the optometry module, and can automatically adjust the optical system according to the detected binocular vision. Therefore, users with different visual acuity can directly see the 3D image displayed by the display screen directly through the optical system without manual adjustment, thereby performing vision correction during the experience of 3D wearable display.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a structural block diagram of a wearable display device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a vision correction method according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is apparent that the described embodiments are part of the embodiments of the invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall be protected by the present invention. range.

In addition, the description of the following embodiments is provided to illustrate the specific embodiments in which the invention may be practiced. Directional terms mentioned in the present invention, for example, "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., only The directional terminology is used to describe and understand the invention in a better and clearer manner, and does not indicate or imply that the device or component referred to must have a particular orientation, in a particular orientation. The construction and operation are therefore not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. The ground connection, or the integral connection; may be a mechanical connection; it may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

Further, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified. If the term "process" appears in the present specification, it means not only an independent process, but also when it is not clearly distinguishable from other processes, it is included in the term as long as the intended function of the process can be realized. In addition, the numerical range represented by "ˉ" in this specification is a range in which the numerical values described before and after "ˉ" are respectively included as a minimum value and a maximum value. In the drawings, elements that are similar or identical in structure are denoted by the same reference numerals.

Embodiments of the present invention provide a wearable display device capable of automatically adjusting optical parameters of an optical system according to a user's vision state without manual adjustment by a user, even if a user having different vision defects can pass The optical system views a clear 3D image to perform vision correction during the experience of 3D wear display. The details will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1. FIG. 1 is a structural block diagram of a wearable display device according to an embodiment of the present invention. In the embodiment of the present invention, the wearable display device 100 includes two display screens 10, an optometry module 20, an optical system 30, and a processor 40, the processor 40 and the two display screens 10, The optometry module 20 and the optical system 30 are electrically connected. The two display screens 10 are respectively disposed corresponding to the eyes of the user (ie, the left eye and the right eye of the user) for simultaneously displaying a three dimensional (3D) image. The optometry module 20 is configured to detect the binocular vision of the user. The optical system 30 is configured to project a 3D image displayed by the display screen 10 to the eyes of the user. The processor 40 is configured to obtain The binocular vision measured by the optometry module 20, and automatically adjusting optical parameters (eg, focal length, curvature, etc.) of the optical system 30 according to the binocular vision, so that users having different visions pass through the optical system 30 The 3D image displayed by the display screen 10 can be clearly seen.

The wearable display device 100 provided by the embodiment of the present invention automatically checks the binocular vision of the user through the optometry module 20, and automatically adjusts the optical parameters of the optical system 30 according to the detected binocular vision. Users with different visual acuity need no manual adjustment, and the 3D image displayed by the display screen 10 can be clearly seen directly through the optical system 30, thereby performing vision correction and improving in the process of experiencing 3D wearable display. The user experience of the user.

In an embodiment of the invention, the optometry module 20 verifies the binocular vision state of the user by detecting the curvature of the user's eyeball. The optometry module 20 can detect the visual state of the user only when the user wears the wearable display device 100, and can detect the visual state of the user in real time or at a time, in the present invention. This is not specifically limited.

In an embodiment of the invention, the wearable display device 100 further includes a memory 50 that pre-stores different correction programs for different vision states. The memory 50 is further connected to the processor 40, and the processor 40 searches for the correction program matching the current user's binocular vision from the memory 50, and then adjusts the corresponding according to the correction program. Optical parameters of optical system 30. In the present embodiment, the corresponding correction program is stored in advance by the memory 50 for different vision states of the user, and the processor 40 can dynamically adjust the correction program in real time by matching the current user's vision. The optical parameters of the optical system 30 are described without the user's manual adjustment, which is quicker, more convenient, and more precise.

In an embodiment of the invention, the two display screens 10 are both ultra-micro display screens. In the embodiment, the ultra-micro display screen can provide a display function for the wearable display device 100. Based on the characteristics of the ultra-micro display screen, the ultra-micro display screen can be compared with a common display screen. The weight of the display screen and the size occupied are greatly reduced, making the wearable display device 100 lighter and thinner, thereby improving the experience of the wearable display device 100.

In an embodiment of the present invention, the optical system 30 may be two, respectively corresponding to two of the display screens 10, and may independently adjust the visual acuity of the eyes of the user (left eye and right eye) respectively. . Therefore, even if the user's binocular vision is different, the user can clearly view the display of the display screen 10 by separately adjusting the optical system 30 corresponding to the left and right eyes of the user. 3D image.

In the present invention, the optical system 30 may be a lens with adjustable curvature, or a lens with adjustable distance from the display screen 10, and, in the present invention, not for the optical system 30. The structure is specifically limited.

In an embodiment of the invention, the optical system 30 can be two lenses with adjustable curvature, each of the lenses is respectively disposed corresponding to a display screen 10, and the processor 40 is separately adjusted according to the binocular vision of the user. The curvature of the two lenses allows the user's eyes to clearly see the 3D image displayed by the display screen 10 by adjusting the curvature of the lens.

In the embodiment of the present invention, the lens with adjustable curvature is a liquid crystal lens, and the optical system 30 includes a control circuit (not shown) for driving liquid crystal deflection in the liquid crystal lens to adjust The curvature of the liquid crystal lens.

In the embodiment of the present invention, the control circuit is connected to the processor 40, and different correction procedures are pre-stored corresponding to different vision states in the memory 50, and the correction program includes driving the liquid crystal lens The drive voltage required to preset the curvature. The processor 40 matches a corresponding correction program according to the visual state of the user, and then reads a corresponding driving voltage from the correction program, and then controls the control circuit to output the driving voltage to the liquid crystal lens. The liquid crystal lens can be driven to adjust the curvature matching the visual acuity of the user, and the user can clearly view the 3D image displayed by the display screen 10 through the liquid crystal lens.

In another embodiment of the present invention, the optical system 30 can be two lenses, each of which is respectively disposed corresponding to a display screen 10, and the distance between each lens and the corresponding display screen 10 can be independently adjusted. . In this embodiment, by automatically adjusting the distance between the lens and the corresponding display screen 10, the user of different vision states can clearly view the 3D image displayed on the display screen 10 through the lens. . Therefore, even if the user's binocular vision is different, the user can clearly view the 3D image displayed by the display screen 10 by separately adjusting the lenses of the left and right eyes of the user.

In this embodiment, the optical system further includes a sliding mechanism (not shown), wherein the two lenses are mounted on the sliding mechanism, and the two sliding mechanisms are respectively adjusted by the sliding mechanism. Corresponding to the distance between the display screens 10.

In this embodiment, the processor 40 is connected to the sliding mechanism, and the memory The spacing value between the lens and the display screen 10 is pre-stored corresponding to the different vision states in 50, the processor 40 matches the spacing value corresponding to the visual state of the user, and then controls the sliding mechanism to drive The lens moves until the distance between the lens and the corresponding display screen 10 reaches a matching value from the memory 50, and the user can clearly see the display screen 10 through the lens. 3D image.

In an embodiment of the present invention, the wearable display device 100 further includes a main body (not shown), the main body is convenient for the user to wear the wearable display device 100, and the optometry module 20, The optical system 30, the processor 40, and the memory 50 are all disposed within the main body, and the display screen 10 is mounted on a housing of the main body.

The wearable display device 100 of the embodiment of the invention can automatically detect the binocular vision state of the user, and automatically adjust the optical parameters of the optical system 30 according to the measured vision state, so that users with different vision states do not need to manually By adjusting the optical system 30, the 3D image displayed on the display screen 10 can be clearly viewed, thereby achieving vision correction during the enjoyment of the 3D wearing experience. In addition, the wearable display device 100 has a simple structure, convenient operation, and more precise adjustment, thereby improving the user experience of the user.

An embodiment of the present invention further provides a vision correction method, which is capable of performing vision correction by the wearable display device 100. Please refer to FIG. 2 together. FIG. 2 is a flowchart of a vision correction method according to an embodiment of the present invention. The vision correction method includes the following steps:

S201: The optometry module 20 detects the binocular vision of the user.

In the present embodiment, the visual acuity of the user is detected by the optometry module 20 to detect binocular vision.

S202: The processor 40 adjusts optical parameters of the optical system 30 according to the detected binocular vision of the user.

S203: The optical system 30 projects the 3D image displayed on the display screen 10 to the eyes of the user.

In another embodiment of the present invention, the vision correction method further includes the following steps before the step S201:

S200: The memory 50 pre-stores different correction programs for different vision states.

In this embodiment, the step of the processor 40 adjusting the optical parameters of the optical system 30 according to the detected binocular vision of the user in the step S202 includes:

Finding a corresponding correction procedure according to detecting the binocular vision of the user;

The optical parameters of the optical system are adjusted based on the found corrective procedure.

In the vision correction method of the present embodiment, the memory 50 stores different correction programs in advance for different vision states, and the processor 40 can dynamically update the correction program matching the current user's binocular vision in real time. Adjusting the optical parameters of the optical system 30 such that the optical system 30 can clearly project the 3D image displayed by the display screen 10 onto the experiential eyes, so that users with different vision states do not need to manually The adjustment can clearly view the 3D image, the use is faster and more convenient, and the adjustment is more precise, the user can realize the vision correction in the process of enjoying the 3D wear display, thereby improving the user experience.

The wearable display device 100 and the vision correction method of the present invention can automatically adjust the optical parameters of the optical system 30 according to the visual state of the user without manual adjustment by the user, even if there are users with different visual defects. A clear 3D image is viewed through the optical system 30 to perform vision correction during the experience of 3D wear display.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like means a specific feature described in connection with the embodiment or example, Structures, materials or features are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The wearable display device and the vision correction method provided by the embodiments of the present invention are described in detail. The principles and implementations of the present invention are described in the following. The description of the above embodiments is only for helping to understand. The method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and the scope of application. It is understood to be a limitation of the invention.

Claims (19)

A wearable display device includes: two display screens, an optometry module, an optical system, and a processor, wherein the processor is electrically connected to the two display screens, the optometry module, and the optical system; The two display screens respectively correspond to a user's binocular setting for simultaneously displaying a 3D image, the optometry module is for detecting a user's binocular vision, and the optical system is configured to display two of the display screens. Projecting a 3D image to the eyes of the user, the processor is configured to acquire binocular vision detected by the optometry module, and automatically adjust optical parameters of the optical system according to the binocular vision to enable users with different binocular vision A 3D image having a predetermined definition is acquired by the optical system. The wearable display device of claim 1, wherein the wearable display device further comprises a memory pre-stored with different correction programs for different vision states; the memory and the processor Connected, the processor searches for a correction program matching the current user's binocular vision from the memory, and adjusts the optical parameters of the optical system according to the correction program. The wearable display device of claim 1, wherein the two display screens are ultra-micro display screens. The wearable display device of claim 1, wherein the optical system comprises two lenses with adjustable curvature and control circuits, each of the lenses corresponding to one of the display screens, the processor and the The control circuit is electrically connected, and the control circuit outputs a corresponding driving voltage to the lens according to the binocular vision of the user to drive the lens to adjust to a curvature matching the binocular vision of the user. The wearable display device of claim 1, wherein the optical system comprises two lenses, each of the lenses is disposed corresponding to a display screen, and a distance from the display screen is The user's binocular vision is independently adjusted. The wearable display device of claim 5, wherein the optical system further comprises a sliding mechanism, two of the lenses being mounted on the sliding mechanism, the sliding mechanism driving the two of the lenses relative to the respective The display screen slides to adjust the distance between the lens and the corresponding display screen. The wearable display device of claim 1, wherein the wearable display device further comprises a body, the optometry module, the optical system, the processor, and the memory are both disposed in the main body The display screen is mounted on the main body to facilitate viewing of a 3D image by a user. The wearable display device of claim 2, wherein the wearable display device further comprises a body, the optometry module, the optical system, the processor, and the memory are both disposed in the main body The display screen is mounted on the main body to facilitate viewing of a 3D image by a user. The wearable display device of claim 3, wherein the wearable display device further comprises a body, the optometry module, the optical system, the processor, and the memory are both disposed in the main body The display screen is mounted on the main body to facilitate viewing of a 3D image by a user. The wearable display device of claim 4, wherein the wearable display device further comprises a body, the optometry module, the optical system, the processor, and the memory are both disposed in the main body The display screen is mounted on the main body to facilitate viewing of a 3D image by a user. The wearable display device of claim 5, wherein the wearable display device further comprises a body, the optometry module, the optical system, the processor, and the memory are both disposed in the main body The display screen is mounted on the main body to facilitate viewing of a 3D image by a user. The wearable display device of claim 6, wherein the wearable display device further comprises a body, the optometry module, the optical system, the processor, and the memory Disposed within the main body, the display screen is mounted on the main body to facilitate viewing of a 3D image by a user. A vision correction method for achieving vision correction by a wearable display device, wherein the vision correction method comprises: The optometry module detects the binocular vision of the user; The processor adjusts optical parameters of the optical system according to the detected binocular vision of the user; The optical system projects a 3D image displayed on the display screen to both eyes of the user. The vision correction method according to claim 13, wherein before the step of detecting the binocular vision of the user by the optometry module, the method further comprises: The memory is pre-stored with different correction procedures for different vision states. The vision correction method according to claim 14, wherein the processor adjusts the optical parameters of the optical system according to the binocular vision of the user, including: Finding a corresponding correction procedure according to detecting the binocular vision of the user; The optical parameters of the optical system are adjusted based on the found corrective procedure. The vision correction method according to claim 13, wherein the two display screens are ultra-fine display screens. The vision correction method according to claim 13, wherein said optical system comprises two lenses with adjustable curvature and control circuits, each of said lenses being disposed corresponding to one of said display screens, said processor and said control The circuit is electrically connected and controls the control circuit to output a corresponding driving voltage to the lens according to the binocular vision of the user to drive the lens to adjust to a curvature matching the binocular vision of the user. The vision correction method according to claim 13, wherein said optical system comprises two lenses, each of said lenses is disposed corresponding to a display screen, and a distance from said display screen is performed according to a binocular vision of the user. Independent adjustment. The vision correction method according to claim 18, wherein said optical system further comprises a sliding mechanism, and said two lenses are mounted on said sliding mechanism, said sliding mechanism driving said two said lenses relative to said The display slides to adjust the distance between the lens and the corresponding display screen.

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