CN110865458A - Head-mounted equipment - Google Patents
Head-mounted equipment Download PDFInfo
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- CN110865458A CN110865458A CN201911200744.7A CN201911200744A CN110865458A CN 110865458 A CN110865458 A CN 110865458A CN 201911200744 A CN201911200744 A CN 201911200744A CN 110865458 A CN110865458 A CN 110865458A
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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
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Abstract
The application discloses head-mounted device includes: the body is used for wearing the head-mounted equipment on the head; the body is provided with: the image projection device is used for outputting parallel light; the plane spectroscope is used for reflecting the parallel light; the curved surface reflector is used for reflecting the parallel light reflected by the plane spectroscope, and the reflected parallel light is transmitted to the human eyes through the plane spectroscope; the planar beam splitter has a first reflectivity and a first transmittance for light in a first optical wavelength range and a second reflectivity and a second transmittance for light in a second optical wavelength range, the second optical wavelength range is different from the first optical wavelength range, the first reflectivity is greater than the second reflectivity, and the first transmittance is less than the second transmittance; the optical wavelength of the parallel light output by the image projection device is matched with the first optical wavelength range, so that the interference light transmits through the plane spectroscope at a second transmittance; the plane beam splitter reflects the parallel light output by the image projection device with a first reflectivity.
Description
Technical Field
The application relates to the technical field of augmented reality, in particular to a head-mounted device.
Background
The current augmented reality ar (augmented reality) glasses usually include an image projection device and a display light path component.
The image projection device comprises a curved surface image source, divergent light of the light source is converted into parallel light through a lens or a lens group in the curved surface image source, the display light path component comprises a plane spectroscope and a curved surface reflector which are sequentially arranged, correspondingly, the parallel light output by the curved surface image source is reflected to the curved surface reflector through the plane spectroscope, and the curved surface reflector converges the parallel light to human eyes.
In the above optical path, there may be a large amount of interference light reflected to the human eye through the planar beam splitter, resulting in poor user experience of the AR glasses.
Disclosure of Invention
In view of the above, the present application provides a head-mounted device, as follows:
a head-mounted device, comprising:
a body for wearing the head-mounted device on the head;
the body is provided with:
an image projection device for outputting parallel light;
the plane spectroscope is used for reflecting the parallel light output by the image projection device;
the curved surface reflector is used for reflecting the parallel light reflected by the plane spectroscope, and the reflected parallel light penetrates through the plane spectroscope and is incident to human eyes;
the plane spectroscope has a first reflectivity and a first transmittance for light in a first light wavelength range; the planar beam splitter has a second reflectivity and a second transmittance for light in a second optical wavelength range, the second optical wavelength range is different from the first optical wavelength range, the first reflectivity is greater than the second reflectivity, and the first transmittance is less than the second transmittance;
and the optical wavelength of the parallel light output by the image projection device is matched with the first optical wavelength range, so that: the interference light with the wavelength different from the parallel light transmits through the plane spectroscope at the second transmittance; the plane spectroscope reflects the parallel light output by the image projection device with the first reflectivity.
In the above head-mounted device, preferably, the planar beam splitter includes:
a glass substrate;
a dielectric multilayer film disposed on the first surface of the glass substrate such that the planar beam splitter has the first reflectivity for light in the first light wavelength range;
and the reflection prevention film is arranged on the second surface of the glass substrate so that the plane spectroscope has a second transmittance for the light in the second light wavelength range.
In the head-mounted device, it is preferable that the first surface is a surface of the glass substrate facing the image projection device; the second surface is a surface of the glass substrate facing away from the image projection device.
In the above-described head-mounted apparatus, preferably, the dielectric multilayer film has a target reflectance, so that the planar beam splitter including the dielectric multilayer film has the first reflectance for light in the first light wavelength range.
In the above-described head-mounted apparatus, preferably, the reflection prevention film is a multilayer film structure formed by stacking at least two low reflection layers having corresponding target refractive indices such that the planar beam splitter including the reflection prevention film has the second transmittance for light in the second light wavelength range.
In the above head-mounted device, preferably, the first light wavelength range is: and taking the wavelength corresponding to the light peak value of the parallel light as a center to obtain a light wavelength range with the bandwidth as a preset range.
In the above head-mounted device, preferably, the first light wavelength range is: and taking the optical wavelength range of the parallel light, wherein the optical wavelength amplitude value of the parallel light is larger than the preset proportion value of the optical peak value.
In the above head-mounted device, preferably, the image projection device includes:
a light source for outputting diverging light;
a lens group, the light source and the lens group being oppositely disposed, the lens group including at least one lens; the lens group is used for: and converting the light path of the divergent light output by the light source to output parallel light.
As can be seen from the above technical solutions, in the head-mounted device disclosed in the present application, the plane beam splitter disposed on the main body is configured to have the first reflectivity and the first transmittance for light in the first optical wavelength range, and the plane beam splitter is configured to have the second reflectivity smaller than the first reflectivity and the second transmittance larger than the first transmittance for light in the second optical wavelength range different from the first optical wavelength range, so that when the first optical wavelength range matches with the optical wavelength of the parallel light output by the image projection device disposed on the main body, the plane beam splitter can transmit the interference light with wavelength different from the parallel light with the larger second transmittance, and at the same time, the plane beam splitter can reflect the parallel light output by the image projection device with the larger first reflectivity, so that a large amount of interference light can transmit the plane beam splitter without being reflected to human eyes, a large amount of parallel light can still be reflected to the curved surface reflector by the plane spectroscope, and then the parallel light is incident to human eyes through the plane spectroscope by the curved surface reflector, so that the human eyes are prevented from entering human eyes while outputting light, and the use experience of users is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a head-mounted device according to an embodiment of the present disclosure;
fig. 2 and 3 are schematic structural diagrams of the body 101 in the embodiment of the present application, respectively;
FIG. 4 is a schematic structural diagram of an image projection apparatus according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a lens assembly according to an embodiment of the present application;
FIG. 6 is a schematic diagram of the wavelength range of light in the example of the present application;
FIG. 7 is a schematic structural diagram of a planar beam splitter in an embodiment of the present application;
FIG. 8 is another schematic structural diagram of an embodiment of the present application;
FIGS. 9 and 10 are schematic diagrams showing the selection of the wavelength ranges of light in the embodiment of the present application;
FIG. 11 is a schematic diagram of the wavelength range of light when the embodiment of the present application is applied to AR glasses;
fig. 12 is a schematic wavelength diagram of light when the AR glasses are applied to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, a schematic structural diagram of a head-mounted device provided in this embodiment of the present application is shown, where the head-mounted device may be a device capable of being worn on a head, such as AR glasses. The technical scheme in the embodiment is mainly used for improving the condition that a large amount of interference light is reflected to human eyes through the plane beam splitter to cause poor user experience.
Specifically, the head-mounted device in this embodiment may include the following structure:
a body 101 for wearing the head-mounted device on the head.
The body 101 may be a support structure, as shown in fig. 2, and the head-mounted device is mounted on the head ear through two side support ends; alternatively, the body 101 may be a loop structure, as shown in fig. 3, with the head-mounted device being secured to the head by an elastic or non-elastic flexible band.
Specifically, the body 101 is provided with:
and an image projection device 102 for outputting parallel light.
The image projection apparatus 102 may include a light source 401 and a lens group 402, as shown in fig. 4, the light source 401 and the lens group 402 are disposed opposite to each other, the light source 401 has one or more light emitting points for outputting divergent light, and the divergent light forms parallel light after passing through the lens group 402.
Specifically, only one lens may be disposed in the lens group 402, and the lens converts the light path of the divergent light to form parallel light; alternatively, two or more lenses may be disposed in the lens group 402, and the lenses are disposed in parallel, as shown in fig. 5, and a plurality of lenses in the lens group 402 are combined to sequentially perform optical path conversion on divergent light, and finally output parallel light.
And a plane beam splitter 103 for reflecting the parallel light output from the image projection device 102.
The planar beam splitter 103 and the light output direction of the parallel light output by the image projection device 102 form a first angle.
And the curved reflector 104 is used for reflecting the parallel light reflected by the plane beam splitter 103, and the reflected parallel light is transmitted through the plane beam splitter 103 and then enters human eyes to form images, such as game scene images and the like, in the human eyes.
The curved reflector 104 is a curved structure so as to reflect the parallel light reflected from the planar beam splitter 103 at different angles, and a second angle is formed between the curved section of the curved reflector 103 and the planar beam splitter 103. The second angle is matched with the first angle, so that the parallel light output by the image projection device 102 is reflected by the plane beam splitter 103 and then enters the curved surface reflector 104, the curved surface reflector 104 reflects the parallel light at different angles and then enters the human eye, and the curved surface reflector 104 and the plane beam splitter 103 are oppositely arranged, so that the curved surface reflector 104 transmits the reflected parallel light through the plane beam splitter 103 and enters the human eye.
The planar beam splitter 103 has a first reflectivity and a first transmittance for light within a first light wavelength range; the planar beam splitter 103 has a second reflectivity and a second transmittance for light in a second optical wavelength range, and the second optical wavelength range is different from the first optical wavelength range, as shown in fig. 6, the first optical wavelength range is a range from a wavelength a to a wavelength B, light with a wavelength greater than a and less than B is light in the first optical wavelength range, the second optical wavelength range is a range from a wavelength B to a wavelength C, and light with a wavelength greater than B and less than C is light in the second optical wavelength range. For the first optical wavelength range and the second optical wavelength range, a first reflectance of the plane splitter 103 to light in the first optical wavelength range is greater than a second reflectance of the plane splitter 103 to light in the second optical wavelength range, and a first transmittance of the plane splitter 103 to light in the first optical wavelength range is smaller than a second transmittance of the plane splitter 103 to light in the second optical wavelength range.
Based on this, in the case where the optical wavelength of the parallel light output by the image projection device 102 matches the first optical wavelength range in the present embodiment, it is possible to make: the interference light with the wavelength different from the parallel light transmits through the plane beam splitter 103 with a second larger transmittance; the parallel light output by the image projection device 102 can be reflected by the plane beam splitter 103 to the curved mirror 104 with a first reflectivity.
As can be seen from the above-mentioned solutions, in the head-mounted device provided in the embodiments of the present application, the plane beam splitter disposed in the main body is configured to have the first reflectivity and the first transmittance for the light in the first optical wavelength range, and the plane beam splitter is configured to have the second reflectivity smaller than the first reflectivity and the second transmittance larger than the first transmittance for the light in the second optical wavelength range different from the first optical wavelength range, so that when the first optical wavelength range matches the optical wavelength of the parallel light output by the image projection device disposed on the main body, the plane beam splitter can transmit the interference light with the wavelength different from the parallel light with the larger second transmittance, and at the same time, the plane beam splitter can reflect the parallel light output by the image projection device with the larger first reflectivity, so that a large amount of interference light can transmit the plane beam splitter without being reflected to the human eye, a large amount of parallel light can still be reflected to the curved surface reflector by the plane spectroscope, and then the parallel light is incident to human eyes through the plane spectroscope by the curved surface reflector, so that the human eyes are prevented from entering human eyes while outputting light, and the use experience of users is improved.
In one implementation, the planar beam splitter 103 may include the following structure therein to achieve a first reflectance and a first transmittance for light in a first light wavelength range and a second reflectance and a second transmittance for light in a second light wavelength range, as shown in fig. 7:
a glass substrate 701.
The glass substrate 701 may have a plate-shaped structure with a certain thickness, and index parameters such as resolution, transmittance, thickness, weight, and viewing angle of the glass substrate 701 may be set as required.
And a dielectric multilayer film 702 disposed on the first surface of the glass substrate 701 so that the planar beam splitter 103 has a first reflectance for light in a first light wavelength range.
The number of dielectric films in the dielectric multilayer film 702, the thickness of each dielectric film, and the reflectivity may be set according to the wavelength of light corresponding to the first wavelength range, so that the planar beam splitter 103 having the dielectric multilayer film 702 can have a large first reflectivity, such as a reflectivity of 60%, for light in the first wavelength range. Specifically, since the reflectivities of the dielectric multilayer films 702 are different and the reflectivities of the planar beam splitter 103 formed by the dielectric multilayer films 702 to the wavelengths in the first optical wavelength range are different, in the present embodiment, the dielectric multilayer film 702 is set to have a predetermined target reflectivity, and the target reflectivity is matched with the first optical wavelength range, so that the planar beam splitter 103 including the dielectric multilayer film 702 has the first reflectivity to the light in the first optical wavelength range.
And an anti-reflection film 703 disposed on the second surface of the glass substrate 702 to make the planar beam splitter 103 have a second transmittance for light in a second light wavelength range.
The anti-reflection film 703 may have a plurality of films, and the number of the films, the thickness of each film, and the refractive index may be set according to the light wavelength corresponding to the second light wavelength range, so that the planar beam splitter 103 having the anti-reflection film 703 can have a larger second transmittance, such as a transmittance of 60%, for the light in the second light wavelength range. Specifically, the anti-reflection film 703 is a multilayer film structure formed by stacking at least two low reflection layers, and since the refractive indexes of the low reflection layers in the anti-reflection film 703 are different and the different refractive indexes are combined to determine the transmittance of the formed plane beam splitter 103 to the wavelength within the second optical wavelength range, in this embodiment, the low reflection layers may be set to have corresponding target refractive indexes, and the target refractive indexes are matched with the second optical wavelength range, so that the plane beam splitter 103 including the anti-reflection film 703 has the second transmittance to the light within the second optical wavelength range.
Specifically, the first surface of the glass substrate 701 is the surface of the glass substrate 701 facing the image projection device 102, as shown in fig. 8, and the second surface of the glass substrate 701 is the surface of the glass substrate 701 facing away from the image projection device 102, thus, parallel light output from the image projection device 102 is incident from the dielectric multilayer film 702 on the first surface of the glass substrate 701, and is reflected by the planar beam splitter 103 provided with the dielectric multilayer film 702 with a larger first reflectance into the curved mirror 104, and after the disturbance light emitted from the opposite side of the image projection device 102 is incident from the antireflection film 703 on the second surface of the glass substrate 701, the plane beam splitter 103, on which the antireflection film 703 can be provided, transmits light at a large transmittance without reflecting into the human eye, therefore, the purpose of eliminating a large amount of interference light which can enter human eyes is achieved, and the use experience of a user on the head-mounted equipment is improved.
Meanwhile, since the planar beam splitter 103 has a higher second transmittance for light in the second optical wavelength range, most of the external light outside the curved reflector 104 in this embodiment can pass through the planar beam splitter 103 and enter human eyes, so that the viewing of the external scenery by the human eyes is not affected by the planar beam splitter 103 in this embodiment.
In a specific implementation, the wavelength of the parallel light output by the image projection device 102 may be analyzed, and the first light wavelength range may be set as: as shown in fig. 9, the wavelength range obtained by taking the wavelength corresponding to the light peak of the parallel light as the center and the bandwidth as the preset range, and taking the wavelength of 460nm (the wavelength corresponding to the light peak) as the center and the bandwidth as 20nm as the preset range, obtains the first light wavelength range: a wavelength range of 450nm to 470 nm; accordingly, the ranges formed by other wavelengths are all set as the second optical wavelength range, or, since the parallel light may include light with multiple wavelengths, the first optical wavelength range may be formed by multiple sub-ranges, as shown in fig. 9, taking the wavelength of 460nm, the wavelength of 520nm, and the wavelength of 630nm (the wavelength corresponding to the optical peak) as the center, and taking the bandwidth of 20nm as the preset range, so as to obtain the first optical wavelength range: a wavelength range of 450nm to 470nm, a wavelength range of 510nm to 530nm, and a wavelength range of 620nm to 640 nm; accordingly, the ranges of other wavelengths are set as the second light wavelength range.
Alternatively, in this embodiment, the wavelength of the parallel light output by the image projection device 102 may be analyzed, and the first light wavelength range may be set as: the first light wavelength range is: the method comprises the steps of selecting a light wavelength range with a light wave amplitude value larger than a preset proportion value of a light peak value in parallel light, namely selecting a target amplitude value which is the amplitude value of the preset proportion value of the light peak value, and then selecting the light wavelength with the light wave amplitude value larger than the target amplitude value in the parallel light to form a first light wavelength range. As shown in fig. 10, the wavelengths of light having a wave amplitude greater than half of the peak value are selected to form a first wavelength range: a wavelength range of 440nm to 480 nm; correspondingly, the ranges formed by other wavelengths are all set as the second optical wavelength range, or the first optical wavelength range may be formed by a plurality of sub-ranges, as shown in fig. 10, the optical wavelength with the light amplitude greater than half of the light peak value is selected to form the first optical wavelength range: a wavelength range of 440nm to 480nm, a wavelength range of 490nm to 560nm, and a wavelength range of 610nm to 660 nm; accordingly, the ranges of other wavelengths are set as the second light wavelength range.
Taking a head-mounted device as an AR glasses as an example, in combination with the graph of transmittance of a plane beam splitter shown in fig. 11, in order to avoid that the plane beam splitter may also reflect interfering light from below or interfering light in a direction of human eyes, in the technical solution of the present application, first, a light Emitting wavelength (shown as a light Emitting wavelength/nm of the OLED in fig. 12, and arb.unit is an amplitude) of a light source OLED (organic light-Emitting Diode) is analyzed, and this wavelength curve may also be a wavelength curve of a liquid Crystal silicon (liquid Crystal on silicon) or a liquid Crystal display lcd (liquid Crystal display). For example, a planar beam splitter is provided having a transmittance of 40% and a reflectance of 60% for the emission wavelength of the light source, and the transmittance of light of other wavelengths may be 100%. Compared with the case of not changing the reflectivity and the transmittance of the plane spectroscope, such as the case of the plane spectroscope with the transmittance of 40% and the reflectivity of 60%, if the transmittance of the curved surface reflector is 50%, the transmittance of the external image is only 20%. And after adopting the plane spectral mirror of this application, the transmissivity of the most wavelength of external image is 50%, only has the light transmissivity of some wavelength 20%, consequently, has both avoided side interference light to get into people's eye through the reflection, and simultaneously, the user is also promoting greatly at the transmissivity of the external image that sees through head-mounted equipment, has further improved the definition that the user sees through head-mounted equipment and directly watches positive external image.
In conclusion, the light of interference light is incident on the plane spectroscope because the transmittance of most wavelengths is 100%, so most of the light can not be reflected to enter human eyes, thereby greatly reducing the energy of the interference light, thereby promoting the display effect of AR augmented reality display, as shown in FIG. 11, the transmittance curve of the plane spectroscope in the application is shown, it is visible that the plane spectroscope of the application has the function of light splitting by aiming at specific wavelengths, the elimination of the interference light is realized, and the transmittance and the reflectivity of the plane spectroscope are correspondingly adjusted according to the difference of products of the head-mounted equipment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A head-mounted device, comprising:
a body for wearing the head-mounted device on the head;
the body is provided with:
an image projection device for outputting parallel light;
the plane spectroscope is used for reflecting the parallel light output by the image projection device;
the curved surface reflector is used for reflecting the parallel light reflected by the plane spectroscope, and the reflected parallel light penetrates through the plane spectroscope and is incident to human eyes;
the plane spectroscope has a first reflectivity and a first transmittance for light in a first light wavelength range; the planar beam splitter has a second reflectivity and a second transmittance for light in a second optical wavelength range, the second optical wavelength range is different from the first optical wavelength range, the first reflectivity is greater than the second reflectivity, and the first transmittance is less than the second transmittance;
and the optical wavelength of the parallel light output by the image projection device is matched with the first optical wavelength range, so that: the interference light with the wavelength different from the parallel light transmits through the plane spectroscope at the second transmittance; the plane spectroscope reflects the parallel light output by the image projection device with the first reflectivity.
2. The head-mounted device of claim 1, the planar beam splitter comprising:
a glass substrate;
a dielectric multilayer film disposed on the first surface of the glass substrate such that the planar beam splitter has the first reflectivity for light in the first light wavelength range;
and the reflection prevention film is arranged on the second surface of the glass substrate so that the plane spectroscope has a second transmittance for the light in the second light wavelength range.
3. The head-mounted apparatus according to claim 2, the first surface being a surface of the glass substrate facing the image projection device; the second surface is a surface of the glass substrate facing away from the image projection device.
4. The headset of claim 2, said dielectric multilayer film having a target reflectivity such that said planar beam splitter including said dielectric multilayer film has said first reflectivity for light within said first range of light wavelengths.
5. The head-mounted apparatus according to claim 2, the reflection prevention film being a multilayer film structure formed by stacking at least two low reflection layers having corresponding target refractive indices such that the planar beam splitter including the reflection prevention film has the second transmittance for light in the second light wavelength range.
6. The headset of claim 1, the first light wavelength range being: and taking the wavelength corresponding to the light peak value of the parallel light as a center to obtain a light wavelength range with the bandwidth as a preset range.
7. The headset of claim 1, the first light wavelength range being: and taking the optical wavelength range of the parallel light, wherein the optical wavelength amplitude value of the parallel light is larger than the preset proportion value of the optical peak value.
8. The head mounted apparatus of claim 1, the image projection device comprising:
a light source for outputting diverging light;
a lens group, the light source and the lens group being oppositely disposed, the lens group including at least one lens; the lens group is used for: and converting the light path of the divergent light output by the light source to output parallel light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200744.7A CN110865458A (en) | 2019-11-29 | 2019-11-29 | Head-mounted equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911200744.7A CN110865458A (en) | 2019-11-29 | 2019-11-29 | Head-mounted equipment |
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| Publication Number | Publication Date |
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| CN110865458A true CN110865458A (en) | 2020-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911200744.7A Pending CN110865458A (en) | 2019-11-29 | 2019-11-29 | Head-mounted equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111290128A (en) * | 2020-03-31 | 2020-06-16 | 京东方科技集团股份有限公司 | Optical system, display device and intelligent glasses |
| CN111965828A (en) * | 2020-08-28 | 2020-11-20 | Oppo广东移动通信有限公司 | Wearable device and image projection method |
| WO2023202195A1 (en) * | 2022-04-21 | 2023-10-26 | 华为技术有限公司 | Projection apparatus and vehicle |
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| EP3259632A1 (en) * | 2015-02-17 | 2017-12-27 | Osterhout Group, Inc. | See-through computer display systems |
| CN108897136A (en) * | 2018-09-10 | 2018-11-27 | 太若科技(北京)有限公司 | AR Optical devices and wearable AR equipment |
| CN110161687A (en) * | 2018-02-12 | 2019-08-23 | 杭州太若科技有限公司 | AR display device and wearable AR equipment |
| CN110161684A (en) * | 2018-02-12 | 2019-08-23 | 杭州太若科技有限公司 | AR imaging device and wearable AR equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3259632A1 (en) * | 2015-02-17 | 2017-12-27 | Osterhout Group, Inc. | See-through computer display systems |
| CN110161687A (en) * | 2018-02-12 | 2019-08-23 | 杭州太若科技有限公司 | AR display device and wearable AR equipment |
| CN110161684A (en) * | 2018-02-12 | 2019-08-23 | 杭州太若科技有限公司 | AR imaging device and wearable AR equipment |
| CN108897136A (en) * | 2018-09-10 | 2018-11-27 | 太若科技(北京)有限公司 | AR Optical devices and wearable AR equipment |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111290128A (en) * | 2020-03-31 | 2020-06-16 | 京东方科技集团股份有限公司 | Optical system, display device and intelligent glasses |
| CN111290128B (en) * | 2020-03-31 | 2021-10-01 | 京东方科技集团股份有限公司 | Optical system, display device and intelligent glasses |
| WO2021196783A1 (en) * | 2020-03-31 | 2021-10-07 | 京东方科技集团股份有限公司 | Optical system, display device and smart glasses |
| CN111965828A (en) * | 2020-08-28 | 2020-11-20 | Oppo广东移动通信有限公司 | Wearable device and image projection method |
| WO2023202195A1 (en) * | 2022-04-21 | 2023-10-26 | 华为技术有限公司 | Projection apparatus and vehicle |
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