CN210803769U - Ultra-thin optical module and head-mounted display device - Google Patents
Ultra-thin optical module and head-mounted display device Download PDFInfo
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- CN210803769U CN210803769U CN201922022131.0U CN201922022131U CN210803769U CN 210803769 U CN210803769 U CN 210803769U CN 201922022131 U CN201922022131 U CN 201922022131U CN 210803769 U CN210803769 U CN 210803769U
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Abstract
The application relates to the technical field of optical equipment, in particular to an ultra-thin optical module and a head-mounted display device. The ultra-thin optical module includes: a polarizing reflection film and an absorption-type polarizing plate provided on a surface of the polarizing reflection film; the absorption-type polarizing plate has the same polarization direction as the polarizing reflective film. In the thin optical module, the absorption polarizer is arranged on the surface of the polarization reflection film, and absorbs the stray light part of the external environment reflected by the polarization reflection film so as to reduce the influence of the stray light on the viewing.
Description
Technical Field
The application relates to the technical field of optical equipment, in particular to an ultra-thin optical module and a head-mounted display device.
Background
Miniaturization is an important trend in head-mounted display devices. Currently, an optical assembly of an ultra-thin head-mounted display device uses a polarized reflective film, and the polarized reflective film is often located on the outermost side of the optical module near the human eye or near the outside. The reflectivity of the polarization reflection film is high, and if external ambient light is reflected into human eyes when the polarization reflection film is worn, the large stray light interference is caused to influence the viewing experience. In addition, the high reflectivity is not favorable for the appearance of the head-mounted display device.
SUMMERY OF THE UTILITY MODEL
The application provides an ultra-thin type optical module, is equipped with absorption type polaroid on the surface of polarization reflecting film, and absorption type polaroid absorbs the stray light part of the outside environment of polarization reflecting film reflection to reduce the influence of stray light to watching.
In order to achieve the above object, the present application provides an ultra-thin optical module, comprising: a polarizing reflection film and an absorption-type polarizing plate provided on a surface of the polarizing reflection film;
the absorption-type polarizing plate has the same polarization direction as the polarizing reflective film.
In the ultrathin optical module, the absorption type polarizing film is arranged on the surface of the polarization reflection film, and the polarization directions of the absorption type polarizing film and the polarization reflection film are the same, so that the transmission light can penetrate through the absorption type polarizing film and the absorption type polarizing film can absorb stray light of an external environment, the reflection amount of the stray light of the external environment reflected by the polarization reflection film is reduced, and the influence of the stray light on viewing is reduced.
Preferably, the absorption-type polarizer is attached to a surface of the polarizing reflection film.
Preferably, the polarizing plate further comprises a first optical component arranged on the side of the polarizing reflection film facing away from the absorption-type polarizer.
A wear-type display device in this application has as above ultra-thin type optical module, still includes second optical assembly, second optical assembly establishes absorption type polaroid deviates from one side of polarization reflecting film. The beneficial effects produced by the optical module are consistent with those of the ultrathin optical module, and are not repeated herein.
Drawings
Fig. 1 is a schematic structural diagram of an ultra-thin optical module according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a head-mounted display device according to an embodiment of the present disclosure.
Icon: 11-a first optical component; 12-a polarizing reflective film; 13-an absorbing polarizer; 14-a second optical component.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present application provides an ultra-thin optical module, including: a polarizing reflection film 12 and an absorption type polarizing plate 13 provided on the surface of the polarizing reflection film 12;
the absorption-type polarizing plate 13 has the same polarization direction as the polarizing reflective film 12.
The absorption-type polarizing plate 13 absorbs ambient stray light in most cases to 50% of the total amount of stray light.
In the ultra-thin optical module of the present application, the absorption polarizer 13 is disposed on the surface of the polarization reflective film 12, and the polarization directions of the absorption polarizer 13 and the polarization reflective film 12 are the same, so that the transmitted light can pass through the absorption polarizer 13, and the absorption polarizer 13 can absorb the stray light of the external environment, thereby reducing the reflection amount of the stray light of the external environment reflected by the polarization reflective film 12, and reducing the influence of the stray light on the viewing.
Alternatively, the absorption-type polarizing plate 13 is attached to the surface of the polarizing reflection film 12. In such an arrangement, the absorption-type polarizing plate 13 and the polarizing reflection film 12 are closely attached, and the effect of the absorption-type polarizing plate 13 can be improved.
As an alternative, a first optical assembly 11 is further included, and the first optical assembly 11 is disposed on a side of the polarization reflection film 12 facing away from the absorption-type polarizer 13.
Referring to fig. 2, a head-mounted display device in the present application has the ultra-thin optical module as described above, and further includes a second optical assembly 14, where the second optical assembly 14 is disposed on a side of the absorption polarizer 13 facing away from the polarization reflection film 12. The beneficial effects produced by the optical module are consistent with those of the ultrathin optical module, and are not repeated herein.
It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. An ultra-thin optical module, comprising: a polarizing reflection film and an absorption-type polarizing plate provided on a surface of the polarizing reflection film;
the absorption-type polarizing plate has the same polarization direction as the polarizing reflective film.
2. The ultra-thin body optical module of claim 1, wherein the absorbing polarizer is applied to a surface of the polarizing reflective film.
3. The ultra-thin body optical module of claim 1, further comprising a first optical assembly disposed on a side of the polarizing reflective film facing away from the absorbing polarizer.
4. A head-mounted display device having an ultra-thin body optical module as claimed in any of claims 1 to 3, further comprising a second optical component disposed on a side of the absorbing polarizer facing away from the polarizing reflective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022131.0U CN210803769U (en) | 2019-11-20 | 2019-11-20 | Ultra-thin optical module and head-mounted display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022131.0U CN210803769U (en) | 2019-11-20 | 2019-11-20 | Ultra-thin optical module and head-mounted display device |
Publications (1)
| Publication Number | Publication Date |
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| CN210803769U true CN210803769U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922022131.0U Active CN210803769U (en) | 2019-11-20 | 2019-11-20 | Ultra-thin optical module and head-mounted display device |
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| CN (1) | CN210803769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596398A (en) * | 2020-05-13 | 2020-08-28 | 安徽帝显电子有限公司 | Light guide polaroid for LED screen and production method thereof |
-
2019
- 2019-11-20 CN CN201922022131.0U patent/CN210803769U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596398A (en) * | 2020-05-13 | 2020-08-28 | 安徽帝显电子有限公司 | Light guide polaroid for LED screen and production method thereof |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 322103 Room 201, East Building, building C, headquarters center, No. 23, Guangfu East Street, houtang community, Jiangbei street, Dongyang City, Jinhua City, Zhejiang Province (self declaration) Patentee after: Lexiang Technology Co.,Ltd. Address before: 322103 Room 201, East Building, building C, headquarters center, No. 23, Guangfu East Street, houtang community, Jiangbei street, Dongyang City, Jinhua City, Zhejiang Province (self declaration) Patentee before: Zhejiang Lexiang Technology Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 322103 Room 201, East Building, building C, headquarters center, No. 23, Guangfu East Street, houtang community, Jiangbei street, Dongyang City, Jinhua City, Zhejiang Province (self declaration) Patentee after: Zhejiang Lexiang Technology Co.,Ltd. Address before: 200125 floor 1, building 3, No. 239, Mindong Road, Pudong New Area, Shanghai Patentee before: SHANGHAI LEXIANG TECHNOLOGY Co.,Ltd. |