CN114690412A - Head-mounted display device - Google Patents
Head-mounted display device Download PDFInfo
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- CN114690412A CN114690412A CN202011605093.2A CN202011605093A CN114690412A CN 114690412 A CN114690412 A CN 114690412A CN 202011605093 A CN202011605093 A CN 202011605093A CN 114690412 A CN114690412 A CN 114690412A
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- display device
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- mounted display
- eye
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- 238000002834 transmittance Methods 0.000 claims abstract description 69
- 239000011521 glass Substances 0.000 claims description 31
- 210000001747 pupil Anatomy 0.000 claims description 5
- 238000005375 photometry Methods 0.000 claims description 4
- 210000003128 head Anatomy 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 4
- 230000004438 eyesight Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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- Optics & Photonics (AREA)
Abstract
The present invention provides a head-mounted display device which allows ambient light to pass through, comprising: the head-mounted display equipment comprises a head-mounted display equipment main body, a near-eye display device and a control device, wherein the near-eye display device and the control device are arranged on the head-mounted display equipment main body; the head-mounted display equipment also comprises an electric control lens and a light measuring device, the electric control lens and the light measuring device are arranged on the head-mounted display equipment main body and are connected with the control device, and the light measuring device is used for detecting the light intensity of the ambient light and the display brightness of the near-to-eye display device; the head-mounted display equipment comprises an automatic dimming mode, and under the automatic dimming mode, the control device controls the light transmittance of the electric control lens according to the light intensity of the ambient light detected by the light metering device and the display brightness of the near-to-eye display device. The head-mounted display equipment can automatically adjust the light transmittance of the electric control lens according to the light intensity of the ambient light and the display brightness of the near-to-eye display device, so that comfortable and clear display images can be provided for users all the time in various application scenes, and the reasonable eye use of the users can be realized.
Description
Technical Field
The invention relates to the technical field of intelligent devices, in particular to improved head-mounted display equipment.
Background
In recent years, with technological progress, AR glasses and MR glasses are applied more and more, and due to strong technological sense and sense of reality, more and more users are willing to wear the AR glasses or the MR glasses for a long time.
In the currently known AR glasses or MR glasses, higher display brightness is usually provided for clearer image display. Meanwhile, in order to clearly see the real scene, the lenses are designed to be full transparent lenses, or in order to display the image more clearly, the lenses are designed to be sunglass lenses. However, whether the lens is a full-transparent lens or a sunglass lens, the application scenes of the AR glasses or the MR glasses are limited, such as the application scenes with strong or weak light intensity are not suitable; and as the user wears the AR glasses or the MR glasses for a long time, the higher display brightness may also cause damage to the user's eyesight.
Accordingly, there is a need for improved AR glasses or MR glasses to address the above-mentioned problems.
Disclosure of Invention
It is an object of the present invention to at least alleviate or solve the above problems by providing an improved head mounted display device.
According to an aspect of the present invention, there is provided a head mounted display device allowing ambient light to pass through, including:
a head-mounted display device main body, and a near-eye display device and a control device arranged thereon, the control device being connected with the near-eye display device,
wherein, the head-mounted display equipment further comprises an electric control lens and a photometric device, the electric control lens and the photometric device are arranged on the head-mounted display equipment main body and are connected with the control device, the photometric device is used for detecting the light intensity of the ambient light and the display brightness of the near-to-eye display device,
the head-mounted display device comprises an automatic dimming mode, and under the automatic dimming mode, the control device controls the light transmittance of the electric control lens according to the light intensity of the ambient light and the display brightness of the near-to-eye display device, which are detected by the photometry device.
Preferably, the control device determines a target value of the light transmittance of the electrically controlled lens according to the light intensity of the ambient light and the display brightness of the near-eye display device, and adjusts the light transmittance of the electrically controlled lens to the target value of the light transmittance.
Preferably, when the light intensity of the ambient light changes, the control device automatically adjusts the light transmittance of the electrically controlled lens according to the changed light intensity of the ambient light and the display brightness of the near-to-eye display device.
Preferably, when the display brightness of the near-eye display device changes, the control device automatically adjusts the light transmittance of the electrically controlled lens according to the changed display brightness of the near-eye display device and the light intensity of the ambient light.
Preferably, when the user adjusts the display brightness of the near-eye display device, the control device automatically adjusts the light transmittance of the electrically controlled lens along with the user adjustment.
Preferably, when the light intensity of the ambient light changes abruptly from weak to strong, the control device first adjusts the light transmittance of the electrically controlled lens to a value lower than the target light transmittance value, and then adjusts the light transmittance of the electrically controlled lens from the value to the target light transmittance value according to a function within the accommodation time of the pupil of the human eye.
Preferably, when the light intensity of the ambient light is lower than a threshold value, the control device adjusts the light transmittance of the electronically controlled lens to a maximum value, and automatically reduces the display brightness of the near-eye display device according to the light intensity of the ambient light.
Preferably, the head-mounted display device is formed in a head-hoop type, a glasses type, or a helmet type.
Preferably, the electronic control lens is attached to the near-to-eye display device.
Preferably, the electronic control lens is provided separately from the near-eye display device, one of the near-eye display device and the electronic control lens is mounted on the head-mounted display device main body, and the other is clamped to the head-mounted display device main body by a lens clamp.
Preferably, the head-mounted display apparatus further comprises a manual dimming mode in which either one of the display brightness of the near-eye display device and the transmittance of the electrically controlled lens is adjusted by the user independently of the other.
Preferably, the head mounted display device comprises AR glasses or MR glasses.
The head-mounted display equipment can automatically adjust the light transmittance of the electric control lens according to the light intensity of the ambient light and the display brightness of the near-to-eye display device, so that comfortable and clear display images can be provided for users all the time in various application scenes, and the reasonable eye use of the users can be realized.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments thereof, made with reference to the following drawings:
FIG. 1 is a schematic diagram of one embodiment of a head mounted display device in accordance with the present invention;
FIG. 2 is a schematic diagram of a head mounted display device according to the present invention;
fig. 3 is a block diagram of an automatic dimming mode according to an embodiment of the present invention;
fig. 4 is a block diagram of an automatic dimming triggering condition according to an embodiment of the present invention;
fig. 5 is a block diagram of a manual dimming mode according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another embodiment of a head mounted display device according to the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
FIG. 1 is a schematic diagram of one embodiment of a head mounted display device according to the present invention. In the figure, the head mounted display device is AR or MR glasses 1. The AR or MR glasses 1 include a frame 10, and an electronic control lens 11, a light measuring device 12, a control device 13, and a near-to-eye display device 14 provided on the frame 10, wherein the electronic control lens 11, the light measuring device 12, and the near-to-eye display device 14 are connected to the control device 13. The electric control lens 11 is light-permeable, so that a user can observe the surrounding environment through the electric control lens 11, and the light transmittance of the electric control lens 11 can be changed by adjusting the voltage of the electric control lens 11 through the control device 13. The electrically controlled lens 11 is filled with hatching in fig. 1 to show that the transmittance of the electrically controlled lens 11 is adjustable. The light measuring device 12 is used for detecting the light intensity of the ambient light and the display brightness of the near-eye display device 14, and transmitting the detection data to the control device 13 for controlling the light transmittance of the electrically controlled lens 11 and/or the display brightness of the near-eye display device 14.
According to the present invention, the electrically controlled lens can be made of any conventionally known material that can change light transmittance by circuit control, such as liquid crystal.
Fig. 2 is a schematic diagram of a head mounted display device according to the present invention. The relative positional relationship of the electro-controlled lens 11, the near-eye display device 14, and the human eye 15 when the user wears the AR or MR eyeglasses 1 shown in fig. 1 is schematically shown. As can be understood from fig. 2, the human eye 15 observes the display image of the near-eye display device 14 with the electro-controlled lens 11 as the background lens, and therefore, when the AR or MR eyeglasses 1 according to the present invention are used, the display image effect of the near-eye display device 14 observed by the human eye 15 is determined by the light intensity of the ambient light outside the electro-controlled lens 11, the light transmittance of the electro-controlled lens 11, and the display luminance of the near-eye display device 14.
The known AR or MR spectacles, which do not include the electro-controlled lens 11, typically include a background lens, which may be a clear lens or a sunglass lens, or may include no background lens, including only the frame. However, the light transmittance is constant regardless of the background lens of the known AR or MR glasses. When the light intensity of the external ambient light changes, brightness adjustment can be performed only based on the parameters of the near-eye display device itself to adjust the display image effect.
Instead, according to this embodiment of the invention, an electronically controlled lens 11 is used instead of the background lens in known AR or MR glasses. Therefore, when the light intensity of the external ambient light changes, the AR or MR glasses 1 in this embodiment can be adjusted by adjusting the display brightness of the near-to-eye display device 14, adjusted by adjusting the transmittance of the electronic control lens 11, and adjusted by adjusting the display brightness of the near-to-eye display device 14 and the transmittance of the electronic control lens 11 at the same time, so as to provide an ideal display image effect most suitable for the human eye 15 to watch, and achieve the purpose of enabling the user to watch comfortably and clearly, and using the eyes reasonably.
The AR or MR glasses 1 according to this embodiment of the present invention can implement an automatic dimming mode.
Fig. 3 is a block diagram of an automatic dimming mode according to an embodiment of the present invention. The automatic dimming mode 100 can be summarized as a basic adjustment mode 101, in which the transmittance of the electrically controlled lens is controlled according to the intensity of the ambient light and the display brightness of the near-eye display device. Specifically, in the present embodiment, in the automatic dimming mode 100, the control device 13 controls the light transmittance of the electronically controlled lens 11 according to the light intensity of the ambient light detected by the light measuring device 12 and the display luminance of the near-eye display device 14.
The basic adjustment mode 101 can be implemented by various specific control modes of the transmittance of the electronically controlled lens 11 and the display brightness of the near-eye display device 14, and in the block diagram of fig. 3, four control modes are listed as an example: a first control scheme 1011, a second control scheme 1012, a third control scheme 1013, and a fourth control scheme 1014.
In the first control mode 1011, the control device 13 first determines a target light transmittance value of the electronically controlled lens 11 when the desired image display effect is achieved, which is generally an image that is clear and has proper brightness and is seen by the user, according to the light intensity of the ambient light detected by the light measuring device 12 and the display brightness of the near-to-eye display device 14. After determining the target transmittance value, the control device 13 directly adjusts the transmittance of the electrically controlled lens 11 to the target transmittance value, and completes the automatic dimming mode.
In the second control mode 1012, the control device 13 slowly changes the light transmittance of the electronically controlled lens 11 and the display brightness of the near-eye display device 14 according to the light intensity of the ambient light detected by the light measuring device 12 and the display brightness of the near-eye display device 14 until finding the best matching combination of the two, that is, the combination in which the display image viewed by the user is a clear image with appropriate brightness, thereby completing the automatic dimming mode. The second control mode 1012 may also be a semi-automatic dimming mode, that is, during the process of slowly changing the transmittance of the electronically controlled lens 11 and the display brightness of the near-eye display device 14, the user determines the most appropriate matching combination, so as to complete the semi-automatic dimming mode.
The third control mode 1013 is an extreme control mode, that is, the control device 13 directly adjusts the transmittance of the electrically controlled lens 11 to the maximum value, and then automatically reduces the display brightness of the near-to-eye display device 14 according to the light intensity of the ambient light to achieve the best matching, thereby completing the automatic dimming mode.
The fourth control mode 1014 is a special control mode, that is, the control device 13 first adjusts the transmittance of the electrically controlled lens 11 to a transmittance value lower than the transmittance target value, and then adjusts the transmittance of the electrically controlled lens 11 to the transmittance target value according to the light intensity of the ambient light and the display brightness of the near-to-eye display device 14.
The basic adjustment mode 101 is not limited to the four specific control modes listed above, and any adjustment modes of the transmittance of the electro-controlled lens 11 and the display brightness of the near-to-eye display device 14 that can achieve the objectives of the present invention are within the scope of the present invention.
Fig. 4 is a block diagram of an automatic dimming trigger condition or application scenario according to an embodiment of the present invention, illustrating the automatic dimming trigger condition of the AR or MR glasses 1 according to the present invention after entering the automatic dimming mode 100, generally designated by reference numeral T10. As an example, five specific trigger conditions of the automatic dimming trigger condition T10, namely a first trigger condition T101, a second trigger condition T102, a third trigger condition T103, a fourth trigger condition T104 and a fifth trigger condition T105, are shown in fig. 4. Each of the trigger conditions and the automatic dimming control manner shown in fig. 3 corresponding thereto will be described in detail below.
The first trigger condition T101 is that only the intensity of the ambient light changes. Under this trigger condition, the automatic dimming control method may be the first control method 1011 in fig. 3. Specifically, the control device 13 determines a target transmittance value of the electrically controlled lens 11 according to the changing light intensity of the ambient light and the display brightness of the near-eye display device, and automatically adjusts the transmittance of the electrically controlled lens 11 to the target transmittance value. Under this trigger condition, the automatic dimming control method may be the second control method 1012 in fig. 3. Specifically, the control device 13 slowly changes the transmittance of the electronic control lens 11 and the display brightness of the near-eye display device 14 until finding the best matching combination of the two, and completes the automatic dimming mode, or the user determines the matching combination deemed most appropriate by the user in the process of slowly changing the transmittance of the electronic control lens 11 and the display brightness of the near-eye display device 14 by the control device 13, and completes the semi-automatic dimming mode.
The second trigger condition T102 is that the intensity of the ambient light and the display brightness of the near-eye display device change simultaneously. Under this trigger condition, the automatic dimming control method may be the first control method 1011 or the second control method 1012 in fig. 3, and is basically the same as the automatic dimming control method performed under the first trigger condition T101, except that the display luminance of the near-eye display device 14 is performed according to the display luminance after the change, and will not be described in detail here.
The third trigger condition T103 is that only the display luminance of the near-eye display device changes. Under this trigger condition, the automatic dimming control method may be the first control method 1011 or the second control method 1012 in fig. 3, and is basically the same as the automatic dimming control method performed under the first trigger condition T101, except that the display luminance of the near-eye display device 14 is performed according to the display luminance after the change, and will not be described in detail here.
In the second trigger condition T102 and the third trigger condition T103, the display luminance change of the near-eye display device 14 can be classified into two cases, i.e., the manual trigger condition T1031 and the automatic trigger condition T1032. Under the manual trigger condition T1031, the display brightness of the near-eye display device 14 is manually adjusted by the user as needed. Under the auto-triggering condition T1032, the display brightness of the near-eye display device 14 may be automatically adjusted by the system according to, for example, the length of time the user has used the AR glasses or the MR glasses. In the automatic dimming mode, both the manual triggering condition T1031 and the automatic triggering condition T1032 trigger the corresponding automatic dimming control manner.
The fourth trigger condition T104 is an extreme application scenario, i.e. the intensity of the ambient light is below a threshold. Under this trigger condition, the control device 13 does not consider the light intensity variation of the ambient light any more, because the light intensity of the ambient light is too weak, and the electrically controlled lens 11 does not need to be controlled to block light. In this case, the control device 13 adopts the third control mode 1013 in fig. 3 to directly adjust the transmittance of the electro-controlled lens 11 to the maximum value. Then, according to the current light intensity of the ambient light and the display brightness of the near-eye display device, considering that the display brightness of the near-eye display device 14 and the light intensity of the ambient light are too different to cause damage to the eyesight of the user, the display brightness of the near-eye display device 14 is correspondingly reduced, so that the user can see a clear and comfortable display image and can obtain eyesight protection.
The fifth trigger condition T105 is a special application scenario, that is, the light intensity of the ambient light changes abruptly from weak to strong. In this case, if the first control mode 1011 is still followed, the user's eye may be subjected to a sudden change in the intensity of the ambient light and a sudden change in the intensity of the ambient light, because the pupil of the user's eye is still in a larger open size when the intensity of the ambient light is weak and has not yet contracted to a size that accommodates the sudden change in the intensity of the ambient light. To avoid this problem, a fourth control method 1014 in fig. 3 needs to be adopted, in which the control device 13 first adjusts the light transmittance of the electronic control lens 11 to a value lower than the light transmittance target value to adapt to the still larger opening size of the pupil of the user, and then adjusts the light transmittance of the electronic control lens 11 to the light transmittance target value according to a function within the pupil adaptation time of the user according to the mutated ambient light intensity and the display brightness of the near-to-eye display device 14, so that the eye of the user gradually adapts to the mutated ambient light intensity. The function can be a linear function of the light transmittance and the time, or a curve function of the light transmittance and the time.
The automatic dimming trigger condition T10 is not limited to that listed in fig. 4, and may be triggered according to a variety of other application scenarios. For example, the light intensity of the ambient light and the display brightness of the near-eye display device 14 under the optimal eye use condition may be preset, and after entering the automatic dimming mode, if the current light intensity of the ambient light and the current display brightness of the near-eye display device 14 are different from the preset values, the preset values are automatically adjusted.
Fig. 5 is a block diagram of a manual dimming mode according to an embodiment of the present invention. The AR or MR glasses 1 according to the present invention may further comprise a manual dimming mode. As shown in fig. 5, the manual dimming mode 200 includes a first manual dimming mode 201, i.e., independently adjusting the intensity of ambient light, and a second manual dimming mode 202, i.e., independently adjusting the display brightness of the near-eye display device. In other words, in the manual dimming mode 200, either the display brightness of the near-eye display device 14 or the transmittance of the electronically controlled lens 11 is adjusted by the user independently of the other, so that the display brightness of the near-eye display device 14 and the transmittance of the electronically controlled lens 11 are not controlled by the control device 13, and the special requirements of the user under specific conditions can be met.
FIG. 6 is a schematic diagram of another embodiment of a head mounted display device according to the present invention. In this figure, the head mounted display device is AR or MR glasses 1'. The AR or MR glasses 1 ' include a frame 10 ', and a photometry device 12 ', a control device 13 ', and a near-eye display device 14 ' provided on the frame 10 ', the photometry device 12 ' and the near-eye display device 14 ' being connected to the control device 13 '. The AR or MR spectacles 1 ' also comprise a clip 2 ' on which the electro-controlled lens 21 ' is mounted. The clip 2 'can be clipped onto the frame 10' and, when mounted, the electrically controllable lens 21 'is connected to the control device 13'. The light measuring device 12 ' is used for detecting the light intensity of the ambient light and the display brightness of the near-eye display device 14 ', and transmitting the detection data to the control device 13 ' for controlling the light transmittance of the electrically controlled lens 21 ' and/or the display brightness of the near-eye display device 14 '.
After the clip 2 'is mounted to the frame 10', the user can view the surrounding environment through the combined frame 10 'and clip 2', in other words, the combined frame 10 'and clip 2' allow ambient light to pass through. Moreover, the light transmittance of the electro-controlled lens 21 ' can be adjusted by the voltage applied to the electro-controlled lens 21 ' by the control device 13 '.
The electrically controlled lenses of the head mounted display device according to the present invention are not limited to the arrangement shown in fig. 1 and 6, and other arrangements are possible. For example, the AR or MR spectacles 1 of fig. 1 may further include additional lenses, such as a clear piano lens or a clear myopic lens, in which case the electronically controlled lens 11 may be fitted over the clear piano lens or the clear myopic lens and mounted to the frame 10. As another example, the electrically controlled lenses 21 'on the clips 2' in fig. 6 are replaced by transparent plano lenses or transparent near vision lenses, and the electrically controlled lenses 21 'are mounted on the frame 10'.
The head mounted display device according to the present invention is not limited to the glasses type shown in fig. 1 and 6, and may be provided in a head band type, a helmet type, a band type, or the like, and any form capable of stably fixing the head mounted display device to the head of the user is applicable.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (12)
1. A head mounted display device that allows ambient light to pass through, comprising:
a head-mounted display device main body, and a near-eye display device and a control device arranged thereon, the control device being connected with the near-eye display device,
wherein, the head-mounted display equipment further comprises an electric control lens and a light measuring device, the electric control lens and the light measuring device are arranged on the head-mounted display equipment main body and are connected with the control device, the light measuring device is used for detecting the light intensity of the ambient light and the display brightness of the near-to-eye display device,
the head-mounted display device comprises an automatic dimming mode, and under the automatic dimming mode, the control device controls the light transmittance of the electric control lens according to the light intensity of the ambient light and the display brightness of the near-to-eye display device, which are detected by the photometry device.
2. The head-mounted display apparatus according to claim 1, wherein the control device determines a light transmittance target value of the electrically controlled lens according to the light intensity of the ambient light and the display luminance of the near-eye display device, and adjusts the light transmittance of the electrically controlled lens to the light transmittance target value.
3. The head-mounted display device of claim 2, wherein the control device automatically adjusts the transmittance of the electrically controlled lens according to the changed intensity of the ambient light and the display brightness of the near-to-eye display device when the intensity of the ambient light changes.
4. The head-mounted display apparatus according to claim 2, wherein the control device automatically adjusts the light transmittance of the electrically controlled lens according to the changed display brightness of the near-eye display device and the light intensity of the ambient light when the display brightness of the near-eye display device changes.
5. The head-mounted display apparatus according to claim 4, wherein the control device automatically adjusts the light transmittance of the electrically controlled lens as the user adjusts when the user adjusts the display brightness of the near-eye display device.
6. The head-mounted display device according to claim 2, wherein when the intensity of the ambient light changes abruptly from weak to strong, the control device first adjusts the transmittance of the electrically controlled lens to a value lower than the target transmittance value, and then adjusts the transmittance of the electrically controlled lens from the value to the target transmittance value as a function within the human eye pupil adaptation time.
7. The head-mounted display device according to claim 1, wherein the control means adjusts the light transmittance of the electrically controlled lens to a maximum value when the light intensity of the ambient light is lower than a threshold value, and automatically reduces the display brightness of the near-eye display means according to the light intensity of the ambient light.
8. The head mounted display device of any of claims 1-7, wherein the head mounted display device is formed as a head band, glasses, or helmet.
9. The head mounted display apparatus of any of claims 1-7, wherein the electronically controlled lens is disposed in close proximity to the near-eye display device.
10. The head mounted display device of any one of claims 1-7, wherein the electronically controlled lens is provided separately from the near-eye display device, one of the near-eye display device and the electronically controlled lens being mounted to the head mounted display device body and the other being clamped to the head mounted display device body by a lens clamp.
11. The head mounted display apparatus of any one of claims 1-7, wherein the head mounted display apparatus further comprises a manual dimming mode in which either one of a display brightness of the near-to-eye display device and a transmittance of the electrically controlled lens is adjusted by a user independently of the other.
12. The head mounted display device of any of claims 1-7, wherein the head mounted display device comprises AR glasses or MR glasses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605093.2A CN114690412A (en) | 2020-12-30 | 2020-12-30 | Head-mounted display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605093.2A CN114690412A (en) | 2020-12-30 | 2020-12-30 | Head-mounted display device |
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| Publication Number | Publication Date |
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| CN114690412A true CN114690412A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011605093.2A Pending CN114690412A (en) | 2020-12-30 | 2020-12-30 | Head-mounted display device |
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| CN (1) | CN114690412A (en) |
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