CN113960800B - Augmented reality device, diopter adjustment method thereof, and storage medium - Google Patents

Augmented reality device, diopter adjustment method thereof, and storage medium Download PDF

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Publication number
CN113960800B
CN113960800B CN202111316732.8A CN202111316732A CN113960800B CN 113960800 B CN113960800 B CN 113960800B CN 202111316732 A CN202111316732 A CN 202111316732A CN 113960800 B CN113960800 B CN 113960800B
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diopter
user
augmented reality
module
eyes
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CN113960800A (en
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鹿丽华
王朋杰
王平平
张金杰
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Goertek Optical Technology Co Ltd
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Goertek Optical Technology Co Ltd
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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
    • G02B27/01—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
    • G02B2027/0178—Eyeglass type

Abstract

The invention discloses an augmented reality device and a diopter adjusting method and a storage medium thereof. The method comprises the following steps: acquiring the diopter of eyes of a user; searching a correlation between preset diopter and driving voltage to obtain driving voltage corresponding to diopter of eyes of a user; and applying a driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module so that the difference value between the first diopter and the diopter of the eyes of the user is smaller than a preset threshold value. The invention can adjust the diopter of the augmented reality equipment, so that a user with abnormal eyesight can clearly see the image displayed by the augmented reality equipment without wearing eyesight correction glasses.

Description

Augmented reality device, diopter adjustment method thereof, and storage medium
Technical Field
The invention relates to the technical field of augmented reality, in particular to augmented reality equipment, a diopter adjusting method thereof and a storage medium.
Background
Augmented reality devices (AR devices for short) are an emerging product that incorporates multiple fields of optics, electronics, software, etc., such as AR glasses. The augmented reality device can superimpose the real environment and the virtual object on the same picture or space in real time while simultaneously existing, and the user can feel the reality of "being in the scene" experienced in the objective physical world through the augmented reality device, and can also break through the space, time and other objective limitations and feel the experience that cannot be experienced in the real world.
At present, the prior augmented reality equipment cannot realize diopter adjustment, when the augmented reality equipment faces to people with visual abnormality (such as myopia or hyperopia people), a user is required to wear myopia glasses or hyperopia glasses to clearly see scene images of a real environment and virtual objects, and when the augmented reality equipment is used by naked eyes of the user with visual abnormality, the user is difficult to clearly see the scene images of the real environment and the virtual objects.
Disclosure of Invention
The embodiment of the application aims to solve the technical problem that the prior augmented reality equipment cannot realize diopter adjustment by providing an augmented reality equipment, a diopter adjustment method and a storage medium thereof.
An embodiment of the present application provides an augmented reality apparatus including:
an optical waveguide including an in-coupling region and an out-coupling region;
a display device disposed corresponding to the coupling-in region to inject an image into the coupling-in region;
and the diopter adjusting module is arranged on one side of the coupling-out area facing the eyes.
In an embodiment, the augmented reality device further comprises:
the diopter detection module is used for detecting the diopter of the eyes of the user, the controller is electrically connected with the diopter adjustment module and the diopter detection module, and the controller is used for adjusting the first diopter of the diopter adjustment module according to the diopter of the eyes of the user.
In an embodiment, the augmented reality device further comprises:
the diopter adjusting and compensating module is arranged on one side, far away from eyes, of the optical waveguide and is correspondingly arranged with the diopter adjusting module;
the controller is electrically connected with the diopter adjustment compensation module, and the controller is also used for adjusting the second diopter of the diopter adjustment compensation module according to the diopter of the eyes of the user.
In an embodiment, the diopter adjustment module is an electronically controlled liquid crystal grating, and the controller is configured to obtain a driving voltage of the diopter adjustment module according to the diopter of the eye of the user, and apply the driving voltage to the diopter adjustment module.
In an embodiment, the diopter adjustment compensation module is an electronically controlled liquid crystal grating, and the controller is further configured to apply a voltage to the diopter adjustment compensation module that is opposite in polarity to the driving voltage.
The embodiment of the application provides a diopter adjusting method of augmented reality equipment, which is applied to the augmented reality equipment and comprises the following steps:
acquiring the diopter of eyes of a user;
searching a correlation between preset diopter and driving voltage to obtain driving voltage corresponding to the diopter of the eyes of the user;
and applying the driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module so that the difference value between the first diopter and the diopter of the eyes of the user is smaller than a preset threshold value.
In an embodiment, the step of applying the driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module such that the difference between the user's eye diopter and the first diopter is smaller than a preset threshold value further includes:
acquiring the adjusted first diopter;
and when the difference value between the adjusted first diopter and the diopter of the eyes of the user is smaller than the preset threshold value, applying a voltage with the polarity opposite to that of the driving voltage to the diopter adjustment compensation module so as to adjust the second diopter of the diopter adjustment compensation module.
In an embodiment, after the step of obtaining the diopter of the eye of the user, the method further includes:
judging whether the diopter of the eyes of the user is in a preset diopter interval or not;
and when the diopter of the eyes of the user is not in the preset diopter interval, executing the step of searching the association relation between the preset diopter and the driving voltage to obtain the driving voltage corresponding to the diopter of the eyes of the user.
In addition, to achieve the above object, the present application also provides an augmented reality apparatus including: the method comprises the steps of a memory, a processor and a diopter adjusting program of the augmented reality device, wherein the diopter adjusting program of the augmented reality device is stored in the memory and can be operated on the processor, and the diopter adjusting program of the augmented reality device is executed by the processor.
In addition, in order to achieve the above object, the present application also provides a storage medium having stored thereon a diopter adjustment program of an augmented reality device, which when executed by a processor, implements the steps of the diopter adjustment method of the augmented reality device described above.
The technical scheme of the augmented reality equipment, the diopter adjusting method thereof and the storage medium provided by the embodiment of the application has at least the following technical effects or advantages:
The application provides an augmented reality device, which comprises an optical waveguide, a display device and a diopter adjusting module, wherein the display device is arranged corresponding to a coupling-in area of the optical waveguide so as to inject an image into the coupling-in area of the optical waveguide, and the diopter adjusting module is arranged on one side of the coupling-out area facing eyes. The method comprises the following steps: acquiring the diopter of eyes of a user; searching a correlation between preset diopter and driving voltage to obtain driving voltage corresponding to diopter of eyes of a user; and applying a driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module so that the difference value between the first diopter and the diopter of the eyes of the user is smaller than a preset threshold value. By adopting the technical scheme, the technical problem that the prior augmented reality equipment cannot realize diopter adjustment is solved, diopter adjustment of the augmented reality equipment is realized, a user with visual abnormalities can clearly see images displayed by the augmented reality equipment under the condition that the user does not wear visual correction glasses, and the application range of the augmented reality equipment is expanded.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of an augmented reality device of the present application;
FIG. 2 is a schematic diagram of an electrically controlled liquid crystal grating;
FIG. 3 is a flow chart of a diopter adjustment method of an augmented reality device according to an embodiment of the present application;
FIG. 4 is a flow chart of another embodiment of a diopter adjustment method of the augmented reality device of the present application;
fig. 5 is a schematic structural diagram of a hardware running environment according to an embodiment of the present application.
Reference numerals illustrate:
reference numerals Name of the name Reference numerals Name of the name
100 Display apparatus 200 Eyes of user
101 Light ray 300 Natural ambient light
102 Optical waveguide A Glass substrate
103 Diopter adjusting module B Transparent electrode
104 Diopter adjustment compensation module C Liquid crystal
105 Virtual-real image combining unit
Detailed Description
In order that the above-described aspects may be better understood, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1, in a first embodiment of the present application, an augmented reality device provided by the present application includes a housing (not shown in fig. 1), an optical waveguide 102, a display device 100, and a diopter adjustment module 103, the optical waveguide 102 and the display device being mounted on the housing. The optical waveguide 102 includes an in-coupling region and an out-coupling region, the display device 100 is used for providing an image to be displayed, the display device 100 corresponds to the in-coupling region to inject the image into the in-coupling region, and the diopter adjustment module 103 is disposed on the eye-facing side of the out-coupling region. For example, after the user wears the augmented reality device, the front of the user's eye 200 is directly opposite to the out-coupling zone, and the diopter adjustment module 103 is disposed directly in front of the out-coupling zone and between the out-coupling zone and the user's eye 200.
The diopter adjustment module 103 and the optical waveguide 102 constitute a virtual image combining unit, and after the display device 100 emits an image, the light 101 of the image is emitted into the optical waveguide 102 from the coupling-in area of the optical waveguide 102, is emitted into the diopter adjustment module 103 through the coupling-out area of the optical waveguide 102, and is then emitted from the light emitting side of the diopter adjustment module 103. After the user wears the augmented reality device, the light 101 of the image emitted by the display device 100 passes through the optical waveguide 102 and the diopter adjustment module 103, and then enters the user eye 200 after being emitted from the light emitting side of the diopter adjustment module 103, so that the user can see the virtual image displayed by the augmented reality device.
Specifically, the display device 100 includes a projection device, and the light ray 101 incident on the optical waveguide 102 is image light emitted by the projection device. After light ray 101 enters optical waveguide 102 from the coupling-in region of optical waveguide 102, light ray 101 is totally reflected in optical waveguide 102, and the coupling-out region of optical waveguide 102 couples the totally reflected transmitted light ray 101 out of optical waveguide 102 and into diopter adjustment module 103. The diopter adjusting module 103 has diopter, the diopter of the diopter adjusting module 103 is called as first diopter according to the application, and the first diopter of the diopter adjusting module 103 can be adjusted. Specifically, the first diopter can be adjusted by changing the wavefront (such as the amplitude, the phase and the like of the light) of the light ray 101 entering the diopter adjusting module 103, and after the wavefront of the light ray 101 is changed, the virtual image distance of the virtual image displayed by the augmented reality device is changed, and the virtual image distance is changed due to the reciprocal relation between the virtual image distance and the diopter, so that the first diopter is also changed, that is, the adjustment of the first diopter is realized.
When the vision of a user wearing the augmented reality device is abnormal, such as myopia of the user, after the user wears the augmented reality device, the first diopter of the diopter adjustment module 103 is adjusted, the light ray 101 generated by the display device 100 is transmitted to the diopter adjustment module 103 after being totally reflected by the optical waveguide 102, after the wavefront of the light ray 101 is changed by the diopter adjustment module 103, the diopter adjustment module 103 achieves convergence of the light ray 101, the light ray 101 is entered into eyes of the user with myopia by the light exit side of the diopter adjustment module 103, the user with myopia can clearly see a virtual image displayed by the augmented reality device, the user with myopia does not need to wear the glasses with myopia additionally, and the application range of the augmented reality device is enlarged.
Further, the augmented reality device further comprises a controller and a diopter detection module, wherein the diopter detection module is used for detecting diopter of eyes of a user. The controller is electrically connected to the diopter adjustment module and the diopter detection module, and the controller is configured to adjust the first diopter of the diopter adjustment module 103 according to the diopter of the user's eye detected by the diopter detection module.
Specifically, the user's eye diopters are acquired after the user wears the augmented reality device. In one aspect, the diopter of the eyes of the user can be detected by the diopter detection module, the diopter detection module sends out a vision detection image, the vision detection image is also displayed in the eyes 200 of the user after the user sees the vision detection image, the diopter detection module obtains the vision detection image in the eyes 200 of the user, the obtained vision detection image in the eyes 200 of the user can be understood as an actual vision detection image, the vision detection image sent out by the diopter detection module is a standard vision detection image and can be understood as a standard vision detection image, specific difference information between the actual vision detection image and the standard vision detection image can be obtained by comparing the standard vision detection image with the actual vision detection image, and the diopter of the eyes of the user, namely, the vision degree of the eyes 200 of the user can be obtained by the specific difference information. If the user's eye is myopic, the degree of myopia of the user's eye 200 may be obtained. The diopter detection module includes an imaging device and a photographing device, the imaging device is used for sending out a vision detection image, the photographing device is used for photographing the vision detection image in the eyes 200 of the user, and the imaging device can be used as the display device 100, so that the weight and the volume of the augmented reality device are reduced. On the other hand, after the user wears the augmented reality device, the user can be prompted to input the eye diopter through voice, the input mode can be voice input, key input, after the augmented reality device is connected with the mobile device, the mobile device inputs the eye diopter input by the mobile device, and the augmented reality device receives the eye diopter input by the mobile device, so that the eye diopter of the user is obtained.
Further, according to the display characteristics of the optical system of the augmented reality device, not only the virtual image, but also the real image of the real world needs to be displayed, but because the problem of the first diopter change of the diopter adjustment module 103 is considered, the optical system formed by the diopter adjustment module 103 and the optical waveguide 102 can affect the natural environment light entering the eyes 200 of the user, that is, the virtual image seen by the user is clear and normal, but the natural environment light 300 is directly injected into the waveguide 102 and is emitted from the waveguide 102 through the light emitting side of the diopter adjustment module 103, and then enters the eyes of the user, while the real image seen by the user is clear, the distortion is already generated in the seen real image, that is, the seen real image is inaccurate, and the accurate judgment of the position information of things in the real world is easily affected by the user. Based on this, the diopter adjustment compensation module 104 is arranged on the propagation path of the natural environment light 300 of the augmented reality device, so as to solve the problem of distortion of the real image.
As shown in fig. 1, the augmented reality device further includes: the diopter adjusting and compensating module 104 is arranged on one side, far away from the eyes, of the optical waveguide 102, and is correspondingly arranged with the diopter adjusting module 103, which can be understood that the diopter adjusting module 103 is arranged on one side, close to the eyes, of the optical waveguide 102, the diopter adjusting and compensating module 104 is arranged on the other side, the diopter adjusting and compensating module 104 is opposite to the diopter adjusting module 103, and the optical waveguide 102 is clamped between the Qu Qu diopter adjusting module 103 and the diopter adjusting and compensating module 104. The natural environment light 300 enters the diopter adjustment compensation module 104 from the light-entering side of the diopter adjustment compensation module 104, and sequentially passes through the diopter adjustment compensation module 104, the optical waveguide 102 and the diopter adjustment module 103, and then exits from the light-exiting side of the diopter adjustment module 103. The diopter adjustment compensation module 104, the optical waveguide 102, and the diopter adjustment module 103 constitute a virtual-real image combining unit 105, and a virtual image and a real image can be simultaneously seen by the virtual-real image combining unit 105. Light rays 101 emitted from the display device 100 sequentially enter the user's eyes 200 through the coupling-in region of the optical waveguide 102, the coupling-out region of the optical waveguide 102 and the diopter adjustment module 103, and simultaneously, the natural environment light rays 300 sequentially enter the user's eyes 200 through the diopter adjustment compensation module 104, the optical waveguide 102, the coupling-out region of the optical waveguide 102 and the diopter adjustment module 103, so that the user can simultaneously see the virtual image and the real image.
Specifically, the diopter adjustment compensation module 104 and the diopter adjustment module 103 have the same characteristics, the diopter adjustment compensation module 104 also has diopter, and the diopter of the diopter adjustment compensation module 104 can also be adjusted, and the diopter of the diopter adjustment compensation module 104 is called as a second diopter in the application. Further, the controller is further configured to adjust the second diopter of the diopter adjustment compensation module 104 according to the diopter adjustment of the user's eye.
After the natural environment light 300 is injected into the diopter adjustment compensation module 104, the diopter adjustment compensation module 104 changes the wavefront of the natural environment light 300, so that the natural environment light 300 is converged for the first time, the natural environment light 300 after the first convergence enters the optical waveguide 102, the natural environment light 300 after the first convergence is transmitted through the optical waveguide 102 and then is injected into the diopter adjustment module 103, the diopter adjustment module 103 changes the wavefront of the natural environment light 300 after the first convergence, so that the natural environment light 300 is converged for the second time, the natural environment light 300 after the second convergence enters the eyes 200 of the user, and the user can see clear and undistorted real images. The adjustment of the second diopter can be specifically achieved by changing the wavefront (such as the amplitude, the phase, etc. of the light) of the natural environment light 300 entering the diopter adjustment compensation module 104, and the adjustment mode is the same as that of the first diopter, which is not described herein. After the first diopter is adjusted, the second diopter is adjusted continuously, so that the diopter adjustment compensation module 104 changes the wavefront of the natural environment light 300 in advance, that is, compensates the wavefront of the natural environment light 300 in advance, and therefore the fact that the real image seen by the user is normal and the real image is not distorted can be guaranteed.
The wavefront is illustrated as an example of an amplitude. When the diopter adjustment module 103 and the diopter adjustment compensation module 104 are not provided, the natural environment light 300 is only injected into the user's eye 200 through the optical waveguide 102, the amplitude of the natural environment light 300 emitted from the coupling-out area is assumed to be A0 when the diopter adjustment module 103 and the diopter adjustment compensation module 104 are not provided, the amplitude of the natural environment light 300 emitted from the light-emitting side of the diopter adjustment module 103 is assumed to be A1 when the diopter adjustment module 103 is provided in the coupling-out area of the optical waveguide 102, the difference value of the amplitudes of the natural environment light 300 is A1-A0, and the real image seen by the user is distorted only after the diopter adjustment module 103 is provided in the coupling-out area of the optical waveguide 102. Based on setting the diopter adjustment compensation module 103 in the coupling-out area of the optical waveguide 102, the diopter adjustment compensation module 104 is set, after the diopter adjustment compensation module 104 compensates (i.e. adjusts) the amplitude of the natural environment light 300 injected into the diopter adjustment module 103, the amplitude of the natural environment light 300 emitted by the light-emitting side of the diopter adjustment module 103 becomes A0, which is equivalent to the value that the diopter adjustment compensation module 104 compensates the amplitude of the natural environment light 300 by the size of A1-A0, so that the amplitude of the natural environment light 300 is adjusted from A1 to A0, and therefore, the fact that the real image is not distorted can be ensured, and the user can see the normal real image.
Further, the diopter adjustment module 103 and the diopter adjustment compensation module 104 are both electronically controlled liquid crystal gratings. As shown in fig. 2, fig. 2 is a schematic structural diagram of an electronically controlled liquid crystal grating, in which a represents a glass substrate, B represents a transparent electrode, and C represents liquid crystal.
Specifically, according to the characteristics of the electric control liquid crystal grating, different driving voltages correspond to different deflection angles, and the electric control liquid crystal grating controls the deflection angles corresponding to the liquid crystal deflection according to the corresponding driving voltages. After the driving voltage is applied to the electric control liquid crystal grating, the photoelectric parameters of the electric control liquid crystal grating are changed, wherein the photoelectric parameters comprise the deflection angle of liquid crystal. When light enters the electric control liquid crystal grating, the deflection angle of the liquid crystal changes according to the applied driving voltage, namely the reflection angle of the light entering the electric control liquid crystal grating in the electric control liquid crystal grating changes, so that the emission angle of the light emitted from the light emitting side of the electric control liquid crystal grating changes, and the converging angle of the light by the corresponding electric control liquid crystal grating changes. Thus, the diopter adjustment module 103 may be understood as a first electronically controlled liquid crystal grating and the diopter adjustment compensation module 104 may be understood as a second electronically controlled liquid crystal grating.
Specifically, the diopter adjustment module 103 is a first electronically controlled liquid crystal grating, and the controller is configured to obtain a driving voltage of the diopter adjustment module 103 according to the diopter of the eye of the user, and apply the driving voltage to the diopter adjustment module 103.
The driving voltages corresponding to the diopters of eyes of different users are preset, and each diopter of eyes of the user is associated with the corresponding driving voltage, so that the association relation between the preset diopter and the driving voltage is formed. After the controller obtains the diopter of the eyes of the user, the association relation is searched according to the diopter of the eyes of the user, and the driving voltage corresponding to the diopter of the eyes of the user can be searched. For example, one set of relationships among the relationships is diopter number: -2.5d—drive voltage: +1.2V, and the obtained diopter of the eyes of the user is-2.5D, the corresponding driving voltage of the diopter of the eyes of the user is +1.2V after searching. After the corresponding driving voltage is obtained according to the diopter of the eyes of the user, the obtained driving voltage is applied to the first electric control liquid crystal grating, and the liquid crystal in the first electric control liquid crystal grating deflects according to the deflection angle corresponding to the applied driving voltage. For example, the current angle of the liquid crystal is 0 degrees, the driving voltage is +1.2v, the corresponding deflection angle is 10 degrees, and the liquid crystal is deflected from 0 degrees to 10 degrees. After the liquid crystal in the first electronically controlled liquid crystal grating deflects according to the deflection angle corresponding to the applied driving voltage, the wavefront of the light ray 101 emitted by the display device changes, and as the wavefront of the light ray 101 changes, the virtual image distance of the virtual image displayed by the augmented reality device also changes, and the first diopter of the diopter adjusting module 103 is adjusted, so that the adjusted first diopter is matched with the diopter of the eyes of the user. If a user wearing the augmented reality device is nearsighted, after the first diopter adjustment of the diopter adjustment module 103, the user is as if wearing near-sighted glasses, thereby achieving the correction of the user's vision, and the user can clearly see the virtual image displayed by the augmented reality device without wearing the vision correction glasses.
The diopter adjustment compensation module 104 is a second electrically controlled liquid crystal grating, and the controller is further configured to apply a voltage opposite to the polarity of the driving voltage to the diopter adjustment compensation module 104.
Also, after the second electrically controlled liquid crystal grating is provided, after a voltage having a polarity opposite to that of the acquired driving voltage is applied to the second electrically controlled liquid crystal grating, the liquid crystal in the second electrically controlled liquid crystal grating is deflected at a deflection angle corresponding to the voltage having the polarity opposite to that of the driving voltage. For example, the driving voltage is +1.2V, the corresponding deflection angle is 10 degrees, the voltage opposite to the polarity of the driving voltage is-1.2V, the corresponding deflection angle is 10 degrees, the current angle of the liquid crystal in the second electric control liquid crystal grating is 10 degrees, and the liquid crystal in the second electric control liquid crystal grating is deflected from 10 degrees to 0 degrees. Further, after the natural environment light 300 sequentially passes through the second electrically controlled liquid crystal grating, the optical waveguide 102 and the first electrically controlled liquid crystal grating, the user can see a clear and normal real image. If the augmented reality device displays the virtual image and the real image at the same time, the user can clearly see the virtual image, and can also see the clear and normal real image, and the user with abnormal eyesight does not need to additionally wear vision correction glasses, so that convenience is brought to the user experience augmented reality device with abnormal eyesight, and the application range of the augmented reality device is enlarged.
Based on the augmented reality device in the first embodiment, the application further provides a diopter adjustment method of the augmented reality device. It should be noted that although a logical order is depicted in the flowchart, in some cases the steps depicted or described may be performed in a different order than presented herein.
As shown in fig. 3, in a second embodiment of the present application, a diopter adjustment method of the augmented reality device of the present application includes the steps of:
step S210: the user's eye diopter is obtained.
In this embodiment, the diopter of the eyes of the user is required to be obtained after the user wears the augmented reality device. In one aspect, the diopter of the eyes of the user can be detected by the diopter detection module, the diopter detection module sends out a vision detection image, the vision detection image is also displayed in the eyes 200 of the user after the user sees the vision detection image, the diopter detection module obtains the vision detection image in the eyes 200 of the user, the obtained vision detection image in the eyes 200 of the user can be understood as an actual vision detection image, the vision detection image sent out by the diopter detection module is a standard vision detection image and can be understood as a standard vision detection image, specific difference information between the actual vision detection image and the standard vision detection image can be obtained by comparing the standard vision detection image with the actual vision detection image, and the diopter of the eyes of the user, namely, the vision degree of the eyes 200 of the user can be obtained by the specific difference information. If the user's eye is myopic, the degree of myopia of the user's eye 200 may be obtained.
The diopter detection module includes an imaging device and a photographing device, the imaging device is used for sending out a vision detection image, the photographing device is used for photographing the vision detection image in the eyes 200 of the user, and the imaging device can be used as the display device 100, so that the weight and the volume of the augmented reality device are reduced. If the vision of eyes is normal, the photographed actual vision test image is basically the same as the standard vision test image, if the eyes are short-sighted, the photographed actual vision test image is smaller than the standard vision test image, the photographed actual vision test image is gradually adjusted to the standard vision test image, and the change amount of the photographed actual vision test image is specific difference information between the two. For example, the standard vision detection image is a ring and is recorded as a standard ring, and the photographed actual vision detection image is also a ring and is recorded as an actual measurement ring, and since the actual measurement ring is smaller than the standard ring, the radius of the actual measurement ring and the radius of the standard ring are known, the specific difference information between the standard ring and the actual measurement ring can be represented by the radius difference value, and the diopter of the eyes of the user can be obtained by adjusting the radius difference value, the focal length of the photographing device and the actual measurement ring to the variation of the standard ring.
On the other hand, after the user wears the augmented reality device, the user can be prompted to input the eye diopter through voice, the input mode can be voice input, key input, after the augmented reality device is connected with the mobile device, the mobile device inputs the eye diopter input by the mobile device, and the augmented reality device receives the eye diopter input by the mobile device, so that the eye diopter of the user is obtained.
Step S220: searching a correlation relation between preset diopter and driving voltage to obtain the driving voltage corresponding to the diopter of the eyes of the user.
In this embodiment, the diopter adjustment module 103 is an electrically controlled liquid crystal grating, the electrically controlled liquid crystal grating has diopter, the diopter of the electrically controlled liquid crystal grating can be changed according to the change of the driving voltage, different driving voltages are applied to the electrically controlled liquid crystal grating, the diopter of the electrically controlled liquid crystal grating is correspondingly changed according to the applied driving voltage, and when the diopter adjustment module 103 is the electrically controlled liquid crystal grating, the diopter adjustment module 103 has diopter, and the diopter of the diopter adjustment module 103 is called as the first diopter. The method comprises the steps of presetting driving voltages corresponding to different user eye diopters, and associating each user eye diopter with the corresponding driving voltage to form an association relation between the preset diopter and the driving voltage. After the user eye diopter is obtained, the association relation is searched according to the user eye diopter, and the driving voltage corresponding to the user eye diopter can be searched. For example, one set of relationships among the relationships is diopter number: -2.5d—drive voltage: +1.2V, and the obtained diopter of the eyes of the user is-2.5D, the corresponding driving voltage of the diopter of the eyes of the user is +1.2V after searching.
Further, considering that the vision of some users is normal, the vision of some users is abnormal, such as myopia. If the user's vision is normal, there is no need to adjust the first diopter of the diopter adjustment module 103, and if the user's vision is abnormal, it is highly likely that the user will have difficulty clearly seeing the image displayed by the augmented reality device, and adjustment of the first diopter of the diopter adjustment module 103 is required. Based on this, after the step of acquiring the diopter of the user's eye, it further comprises: judging whether the diopter of the eyes of the user is in a preset diopter interval or not; when the diopter of the user 'S eye is not in the preset diopter interval, step S220 is then executed, namely, the step of searching the association relation between the preset diopter and the driving voltage is executed, and the driving voltage corresponding to the diopter of the user' S eye is obtained.
Wherein, the preset diopter interval is the diopter range corresponding to the object which can be observed normally by the human eye, the diopter of the human eye under normal conditions is 0, and the object can be observed normally by the human eye in the range of 0-0.5D, namely, the object can be seen clearly, therefore, the preset diopter interval can be set as [0,0.5D ]. If the user' S eye diopter is within the preset diopter interval, the first diopter of the diopter adjustment module 103 does not need to be adjusted, i.e., step S220 is not performed, and the augmented reality device normally displays an image. If the user 'S eye diopter is not within the preset diopter interval, the user' S vision is abnormal, and the first diopter of the diopter adjustment module 103 needs to be adjusted, and then step S220 is performed.
Step S230: and applying the driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module so that the difference value between the first diopter and the diopter of the eyes of the user is smaller than a preset threshold value.
In this embodiment, since the human eye can observe things normally when the diopter of the human eye is in the range of 0-0.5D, the preset threshold value can be set according to the preset diopter interval, for example, the preset threshold value is a value belonging to the preset diopter interval. If the difference between the first diopter and the user's eye diopter after adjusting the first diopter of the diopter adjustment module 103 is less than the preset threshold value, this means that the first diopter is close to the user's eye diopter or the first diopter is equal to the user's eye diopter, the diopter adjustment module 103 can be adapted to the user's eye, that is, the user wearing the augmented reality device can see the image displayed by the augmented reality device clearly.
Specifically, after the driving voltage corresponding to the diopter of the eyes of the user is obtained, the obtained driving voltage is applied to the diopter adjustment module 103, the diopter adjustment module 103 works according to the driving voltage, after the light ray 101 enters the diopter adjustment module 103, the wave front of the light ray 101 changes, as the wave front of the light ray 101 changes, the virtual image distance of the virtual image displayed by the augmented reality device also changes, after the light ray 101 is emitted from the light emitting side of the diopter adjustment module 103, the diopter adjustment module 103 converges the light ray 101, so that the first diopter is adjusted, and after the first diopter is adjusted to be smaller than a preset threshold value, the user can clearly see the virtual image displayed by the augmented reality device.
If the eyes of the user are near-sighted, after the acquired driving voltage is applied to the diopter adjustment module 103, the first diopter is adjusted to be smaller than the preset threshold value, and the augmented reality device is equivalent to a pair of near-sighted glasses capable of correcting the eyesight of the user, as if the user wears the near-sighted glasses, so that the eyesight correction of the user is realized, the user can clearly see the virtual image displayed by the augmented reality device without wearing the near-sighted glasses, and convenience is brought to the display of the augmented reality device for user experience.
According to the technical scheme, the technical means that the diopter of the eyes of the user is obtained, the association relation between the preset diopter and the driving voltage is searched for, the driving voltage corresponding to the diopter of the eyes of the user is obtained, the driving voltage is applied to the diopter adjusting module, so that the first diopter of the diopter adjusting module is adjusted, the difference value between the first diopter and the diopter of the eyes of the user is smaller than the preset threshold value is adopted, the diopter of the augmented reality equipment is adjusted, the user with abnormal eyesight can clearly see the image displayed by the augmented reality equipment under the condition that the user does not wear vision correction glasses, and the application range of the augmented reality equipment is expanded.
As shown in fig. 4, in the third embodiment of the present application, step S230 further includes the following steps:
step S240: and acquiring the adjusted first diopter.
Step S250: and when the difference value between the adjusted first diopter and the diopter of the eyes of the user is smaller than the preset threshold value, applying a voltage with the polarity opposite to that of the driving voltage to the diopter adjustment compensation module so as to adjust the second diopter of the diopter adjustment compensation module.
In this embodiment, the diopter adjustment compensation module 104 also has diopter, and the diopter of the diopter adjustment compensation module 104 can also be adjusted, and the diopter of the diopter adjustment compensation module 104 is referred to as a second diopter in the present application.
After the completion of step S230 is performed, there may be a case where the adjusted first diopter is smaller than the preset threshold value, or there may be a case where the adjusted first diopter is greater than or equal to the preset threshold value. In order to ensure more accurate adjustment, after the adjustment of the first diopter is completed, the second judgment is performed on the first diopter, that is, the adjusted first diopter is obtained, the specific difference information of the actual vision detection image and the standard vision detection image shot by the shooting equipment is obtained, and the detection mode of the diopter of the eyes of the user is the same, and is not repeated here. By this detection means, the current user eye diopter of the user, which is the adjusted first diopter, can be obtained after the completion of step S230. And further judging whether the adjusted first diopter is smaller than a preset threshold value, and if the adjusted first diopter is larger than or equal to the preset threshold value, returning to the step S210 until the first diopter is adjusted to be smaller than the preset threshold value. If the adjusted first diopter is less than the preset threshold, the second diopter of the diopter adjustment compensation module 104 is adjusted. The diopter adjustment compensation module 104 is applied with a voltage with the polarity opposite to that of the driving voltage, the diopter adjustment compensation module 104 controls the deflection angle corresponding to the deflection of the liquid crystal in the diopter adjustment compensation module 104 according to the voltage with the polarity opposite to that of the driving voltage, and the wavefront of the natural environment light 300 is changed due to the deflection of the liquid crystal, so that the adjustment of the second diopter can be realized. Assuming that the driving voltage corresponding to adjusting the first diopter to be smaller than the preset threshold value is +2.5v, and the deflection angle corresponding to +2.5v is 25 degrees, the voltage applied by the controller to the diopter adjustment compensation module 104 is-2.5V. When the diopter adjustment compensation module 104 operates according to the voltage opposite to the polarity of the driving voltage, the liquid crystal deflects 25 degrees at the original angle, and the wavefront of the current natural environment light 300 is changed relative to the wavefront before the liquid crystal deflects, so that the adjustment of the second diopter is realized. The adjustment of the second diopter may be understood as that the diopter adjustment compensation module 104 changes the wavefront of the natural environment light 300 in advance, that is, compensates the wavefront of the natural environment light 300 in advance, so that the compensation of the first diopter is realized, and the real image seen by the user is prevented from being distorted. After the first diopter is adjusted, the second diopter is adjusted, so that a user can clearly see the virtual image, and also can see a clear and normal real image, and the real image is not distorted.
The wavefront is illustrated as an example of an amplitude. When the diopter adjustment module 103 and the diopter adjustment compensation module 104 are not provided, the natural environment light 300 is only injected into the user's eye 200 through the optical waveguide 102, the amplitude of the natural environment light 300 emitted from the coupling-out area is assumed to be A0 when the diopter adjustment module 103 and the diopter adjustment compensation module 104 are not provided, the amplitude of the natural environment light 300 emitted from the light-emitting side of the diopter adjustment module 103 is assumed to be A1 when the diopter adjustment module 103 is provided in the coupling-out area of the optical waveguide 102, the difference value of the amplitudes of the natural environment light 300 is A1-A0, and the real image seen by the user is distorted only after the diopter adjustment module 103 is provided in the coupling-out area of the optical waveguide 102. Based on setting the diopter adjustment compensation module 103 in the coupling-out area of the optical waveguide 102, the diopter adjustment compensation module 104 is set, after the diopter adjustment compensation module 104 compensates (adjusts) the amplitude of the natural environment light 300 injected into the diopter adjustment module 103, the amplitude of the natural environment light 300 emitted by the light-emitting side of the diopter adjustment module 103 becomes A0, which is equivalent to the value that the diopter adjustment compensation module 104 compensates the amplitude of the natural environment light 300 by the size of A1-A0, so that the amplitude of the natural environment light 300 is adjusted from A1 to A0, and therefore, the fact that the real image is not distorted can be ensured, and the user can see the normal real image.
Further, considering the case where the adjusted first diopter is greater than or equal to the preset threshold value after the execution of step S230, it is necessary to apply the driving voltage to the diopter adjustment module 103 a plurality of times to adjust the first diopter a plurality of times so that the first diopter is smaller than the preset threshold value. If the first diopter is adjusted a plurality of times so that the first diopter is smaller than the preset threshold value, it is necessary to acquire the total driving voltage of the driving voltages applied to the diopter adjustment module 103 a plurality of times, and then apply a voltage opposite in polarity to the total driving voltage to the diopter adjustment compensation module 104. Wherein the total driving voltage is the sum of the driving voltages applied to the diopter adjustment module 103.
According to the technical scheme, the first diopter after adjustment is acquired, when the difference value between the first diopter after adjustment and the diopter of the eyes of the user is smaller than the preset threshold value, the voltage opposite to the polarity of the driving voltage is applied to the diopter adjustment compensation module, so that the diopter of the diopter adjustment compensation module is adjusted, the diopter compensation of the diopter adjustment module is realized, the real image seen by the user cannot be distorted, and the user can conveniently determine the position information of the real things according to the seen real image.
Further, as shown in fig. 5, fig. 5 is a schematic structural diagram of a hardware running environment according to an embodiment of the present invention.
It should be noted that fig. 5 may be a schematic structural diagram of a hardware running environment of the augmented reality device.
As shown in fig. 5, the augmented reality device may include: a processor 1001, such as a CPU, memory 1005, user interface 1003, network interface 1004, communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the augmented reality device structure shown in fig. 5 is not limiting of the augmented reality device, and may include more or fewer components than shown, or certain components in combination, or a different arrangement of components.
As shown in fig. 5, an operating system, a network communication module, a user interface module, and a diopter adjustment program of the augmented reality device may be included in the memory 1005 as one storage medium. The operating system is a program for managing and controlling hardware and software resources of the augmented reality device, a diopter adjustment program of the augmented reality device and other software or running of the program.
In the augmented reality device shown in fig. 5, the user interface 1003 is mainly used for connecting a terminal, and data communication is performed with the terminal; the network interface 1004 is mainly used for a background server and is in data communication with the background server; the processor 1001 may be used to invoke a diopter adjustment program of the augmented reality device stored in the memory 1005.
In this embodiment, an augmented reality apparatus includes: a memory 1005, a processor 1001, and a diopter adjustment program of an augmented reality device stored on the memory 1005 and executable on the processor, wherein:
when the processor 1001 invokes the diopter adjustment program of the augmented reality device stored in the memory 1005, the following operations are performed:
acquiring the diopter of eyes of a user;
searching a correlation between preset diopter and driving voltage to obtain driving voltage corresponding to the diopter of the eyes of the user;
And applying the driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module so that the difference value between the first diopter and the diopter of the eyes of the user is smaller than a preset threshold value.
When the processor 1001 invokes the diopter adjustment program of the augmented reality device stored in the memory 1005, the following operations are also performed:
acquiring the adjusted first diopter;
and when the difference value between the adjusted first diopter and the diopter of the eyes of the user is smaller than the preset threshold value, applying a voltage with the polarity opposite to that of the driving voltage to the diopter adjustment compensation module so as to adjust the second diopter of the diopter adjustment compensation module.
When the processor 1001 invokes the diopter adjustment program of the augmented reality device stored in the memory 1005, the following operations are also performed:
judging whether the diopter of the eyes of the user is in a preset diopter interval or not;
and when the diopter of the eyes of the user is not in the preset diopter interval, executing the step of searching the association relation between the preset diopter and the driving voltage to obtain the driving voltage corresponding to the diopter of the eyes of the user.
Further, based on the same inventive concept, the present application also provides an augmented reality apparatus comprising: the method comprises the steps of a memory, a processor and a diopter adjusting program of the augmented reality device, wherein the diopter adjusting program of the augmented reality device is stored in the memory and can be operated on the processor, and the diopter adjusting program of the augmented reality device is executed by the processor.
Further, based on the same inventive concept, the present application also provides a storage medium having stored thereon a diopter adjustment program of an augmented reality device, which when executed by a processor, implements the steps of the diopter adjustment method of the augmented reality device described above.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (8)

1. An augmented reality device, the augmented reality device comprising:
an optical waveguide including an in-coupling region and an out-coupling region;
a display device disposed corresponding to the coupling-in region to inject an image into the coupling-in region;
the diopter adjusting module is arranged on one side of the coupling-out area facing the eyes;
the diopter adjusting and compensating module is arranged on one side, far away from eyes, of the optical waveguide and is correspondingly arranged with the diopter adjusting module;
the diopter detection module is used for detecting the diopter of the eyes of the user, the controller is electrically connected with the diopter adjustment module and the diopter detection module, and the controller is used for adjusting the first diopter of the diopter adjustment module according to the diopter of the eyes of the user;
The controller is electrically connected with the diopter adjustment compensation module, and is further used for adjusting the second diopter of the diopter adjustment compensation module according to the diopter of the eyes of the user;
the controller is used for acquiring the driving voltage of the diopter adjustment module according to the diopter of the eyes of the user, applying the driving voltage to the diopter adjustment module, and applying a voltage with the polarity opposite to that of the driving voltage to the diopter adjustment compensation module;
wherein the adjustment of the first diopter and the second diopter is achieved by changing the wavefront of the natural ambient light entering the diopter adjustment compensation module.
2. The augmented reality device of claim 1, wherein the diopter adjustment module is an electronically controlled liquid crystal grating.
3. The augmented reality device of claim 2, wherein the diopter adjustment compensation module is an electronically controlled liquid crystal grating.
4. A diopter adjustment method of an augmented reality device, characterized in that it is applied to the augmented reality device of any one of claims 1 to 3, comprising:
Acquiring the diopter of eyes of a user;
searching a correlation between preset diopter and driving voltage to obtain driving voltage corresponding to the diopter of the eyes of the user;
and applying the driving voltage to the diopter adjustment module to adjust the first diopter of the diopter adjustment module so that the difference value between the first diopter and the diopter of the eyes of the user is smaller than a preset threshold value.
5. The method of claim 4, wherein the step of applying the drive voltage to the diopter adjustment module to adjust a first diopter of the diopter adjustment module such that the difference between the user's eye diopter and the first diopter is less than a preset threshold further comprises:
acquiring the adjusted first diopter;
and when the difference value between the adjusted first diopter and the diopter of the eyes of the user is smaller than the preset threshold value, applying a voltage with the polarity opposite to that of the driving voltage to the diopter adjustment compensation module so as to adjust the second diopter of the diopter adjustment compensation module.
6. The method of claim 4, wherein after the step of obtaining the user's eye diopters, further comprising:
Judging whether the diopter of the eyes of the user is in a preset diopter interval or not;
and when the diopter of the eyes of the user is not in the preset diopter interval, executing the step of searching the association relation between the preset diopter and the driving voltage to obtain the driving voltage corresponding to the diopter of the eyes of the user.
7. An augmented reality device, comprising: a memory, a processor and a diopter adjustment program of an augmented reality device stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the diopter adjustment method of an augmented reality device according to any one of claims 4-6.
8. A storage medium having stored thereon a diopter adjustment program of an augmented reality device, which when executed by a processor, implements the steps of the diopter adjustment method of an augmented reality device of any one of claims 4-6.
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