CN218728356U - Thin type large-field-angle near-to-eye display device - Google Patents
Thin type large-field-angle near-to-eye display device Download PDFInfo
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- CN218728356U CN218728356U CN202220558506.4U CN202220558506U CN218728356U CN 218728356 U CN218728356 U CN 218728356U CN 202220558506 U CN202220558506 U CN 202220558506U CN 218728356 U CN218728356 U CN 218728356U
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- 230000010287 polarization Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a nearly eye display device of slim big angle of vision, including two or a plurality of radial reflection unit, radial reflection unit arranges in the people's eye in front, produces two or a plurality of subimages to splice into great image on the retina of people's eye, thereby realize the nearly eye display effect of great angle of vision under thinner volume, radial reflection unit includes the light source, the plane of reflection, transmission type diopter and/or reflection optical component, the utility model relates to a nearly eye display device technical field. The thin type large-field-angle near-to-eye display device realizes nesting of images with various definitions by adopting different areas of the same screen, and is widely applied as a low-cost display scheme for improving the definition of a central area.
Description
Technical Field
The utility model relates to a near-to-eye display device technical field specifically is a thin big angle of vision near-to-eye display device.
Background
In the near-eye display system, in order to achieve a large-field-angle display effect, an imaging system with a larger aperture is generally required, and the focal length of the large-aperture imaging system is generally not too small, and represents the axial thickness of the near-eye display device.
On the basis of keeping the great bore of imaging system, adopt radial reflection unit, turn into the thickness of device radial dimension to adopt a plurality of radial reflection units of equidirectional or equidirectional, realize great angle of vision through the mode of concatenation formation of image, the whole thin slice form of maintaining the device simultaneously is suitable for more making frivolous handy glasses formula display product, the utility model provides a thin big angle of vision near-to-eye display device.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be not enough to prior art, the utility model provides a slim big angle of vision near-to-eye display device has solved and has been difficult to make the fine big angle of vision glasses formula display of volume problem among the current near-to-eye display system.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the thin near-to-eye display device with the large viewing angle comprises two or more radial reflecting units, wherein the radial reflecting units are arranged in front of human eyes to generate two or more sub-images which are spliced into a larger image on retinas of the human eyes, so that the near-to-eye display effect with the larger viewing angle is realized under a thinner volume.
Preferably, the radial reflection unit comprises a light source, a reflection surface, a transmission type optical device and/or a reflection type optical device, and light emitted by the light source is subjected to refraction amplification through the transmission type optical device or the reflection type optical device, so that the light can be seen clearly by human eyes.
Preferably, two display optical paths with different optical path lengths project two sub-images with overlapped centers on the retina of a human eye, one sub-image is larger and provides a wide edge visual field, and the other sub-image is smaller and provides a central high-definition visual field, so that a near-to-eye display effect with a wide visual field and a clear center is provided.
Preferably, the light sources used by the two different display light paths are from different areas of the same screen, so that only one screen is needed, and the cost is reduced.
Preferably, the display optical path unit includes a light source, a reflective surface, a transmissive diopter and/or a reflective optical component.
Preferably, the light emitted from the light source is reflected twice or more times to finally enter the human eye in the process of being reflected into the final emergent light.
Preferably, the display optical path comprises a multiple reflection structure comprising a plurality of reflection surfaces and/or polarizing plates, and/or multiple reflection prisms, and/or multiple reflection light guiding plates, and/or polarization transmitters, and/or polarization changing reflectors, and/or polarization changers.
Advantageous effects
The utility model provides a thin type large-field-angle near-to-eye display device. Compared with the prior art, the method has the following beneficial effects:
according to the thin type large-field-angle near-to-eye display device, two or more radial reflection units are arranged in front of human eyes, and images with larger areas are projected and spliced on retinas of the human eyes, so that the near-to-eye display effect of the large field angle is achieved under a thinner volume, and the nesting of images with various definitions is achieved by adopting different areas of the same screen, so that the thin type large-field-angle near-to-eye display device can be widely applied as a low-cost display scheme for improving the definition of a central area.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
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.
Please refer to the figure, the present invention provides a technical solution: the thin near-to-eye display device with the large field angle comprises two or more radial reflection units, wherein the radial reflection units are arranged in front of human eyes to generate two or more sub-images which are spliced into a larger image on retinas of the human eyes, so that the near-to-eye display effect with the large field angle is realized under a thinner volume.
In the embodiment of the present invention, the radial reflection unit includes a light source, a reflection surface, a transmission-type diopter and/or a reflection-type optical component, and the light emitted from the light source is diopterly amplified through the transmission-type diopter or the reflection-type optical component, so that the human eyes can see clearly.
The embodiment of the utility model provides an in, two different display optical paths of optical path length throw out two subimages that the center overlaps on the retina of people's eye, and a subimage is great, provides wide marginal field of vision, and another subimage is less, provides the high-definition field of vision in center, provides the near-to-eye display effect that the field of vision is wide and the center is clear from this.
The embodiment of the utility model provides an in, the light source that two different demonstration light paths adopted come from the different regions of same piece screen, consequently only need use a slice screen to the cost is reduced.
In an embodiment of the present invention, the display optical path unit includes a light source, a reflective surface, a transmissive diopter and/or a reflective optical component.
The embodiment of the utility model provides an in, the light that the light source sent becomes final emergent ray's in-process at the reflection, through twice or the reflection more than twice, finally jets into the people's eye.
In an embodiment of the present invention, the display optical path includes a multiple reflection structure, the multiple reflection structure includes a plurality of reflection surfaces and/or polarizing plates, and/or a multiple reflection prism, and/or a multiple reflection polarizing plate, and/or a polarization transmitter, and/or a polarization change reflector, and/or a polarization change device.
Scheme one
Fig. 1 is a schematic diagram of a specific structure of this embodiment, which includes a light source 48011, a light source 48012, a main light splitting surface 4801, a polarizing plate 4802 (several polarizing plates), a transmissive diopter 4803, a transmissive diopter 4804, and a transmissive diopter 4805.
The embodiment proposes another scheme of overlapping and nesting the images with different sizes.
As shown in fig. 1a, the main beam splitting surface 4801 may be a common beam splitter or a polarization beam splitter. The addition of the additional transmissive diopter piece 4804 results in: the light emitted from the light source 48011 is reflected twice and then passes through the transmission-type diopter part 4803; the light from the light source 48012 passes through the transmissive diopter 4804 before passing through the transmissive diopter 4803. Because the final light path lengths of the light rays emitted by the two light sources are different and the passing dioptric parts are also different, the equivalent focal lengths of the two light paths are also different, and the two pictures are different in size, wherein one smaller light path is positioned at the center and the other larger light path occupies the periphery and is more fuzzy.
Scheme two
The embodiment proposes another scheme of overlapping and nesting the images with different sizes.
As shown in fig. 1b, optionally, several polarizing plates 4802 may be additionally added to achieve more excellent spectral isolation characteristics. Alternatively, one or more transmissive diopters 4805 can be added at the illustrated positions to achieve different focal length combinations, or dynamic adjustment of focal lengths.
Scheme three
The embodiment proposes another scheme of overlapping and nesting the images with different sizes.
As shown in fig. 1c, the main beam splitter 4801 can be a common beam splitter or a polarization beam splitter. The difference between the previous solutions is that the light emitted from the light source 48011 is reflected four times and then passes through the transmission diopter 4803. The four-reflection structure can be realized by combining a plurality of reflection surfaces as shown in the figure, and can also be realized by adopting a waveguide total reflection beam splitter prism with the same shape.
Scheme four
The embodiment proposes another scheme of overlapping and nesting the images with different sizes.
As shown in fig. 1d, a number of polarizers 4802 may be optionally added to achieve better spectral isolation characteristics. Alternatively, a transmissive diopter 4805 can be added at the illustrated position to achieve a different focal length combination, or dynamic adjustment of the focal length.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A thin type large-field-angle near-eye display device comprises two or more radial reflection units, wherein the radial reflection units are arranged in front of human eyes to generate two or more sub-images which are spliced into a larger image on retinas of the human eyes, so that a near-eye display effect of a large field angle is realized under a thinner volume, and the thin type large-field-angle near-eye display device is characterized in that: the radial reflection unit comprises a light source, a reflection surface, transmission type optical devices and reflection type optical components, light rays emitted by the light source are subjected to refraction amplification through one or more transmission type optical devices or not, so that two display light paths with different light path lengths are generated, two sub-images with overlapped centers are projected on the retina of a human eye, one sub-image is larger and provides a wide edge visual field, the other sub-image is smaller and provides a central high-definition visual field, and therefore the near-eye display effect with a wide visual field and a clear center is provided.
2. The thin, large field angle, near-to-eye display device of claim 1, wherein: the light sources adopted by the two different display light paths come from different areas of the same screen, so that only one screen is needed, and the cost is reduced.
3. The thin, large field angle, near-to-eye display device of claim 2, wherein: the display optical path unit comprises a light source, a reflecting surface, a transmission type diopter and/or a reflection type optical component.
4. The thin, large field angle, near-to-eye display device of claim 2, wherein: the light emitted by the light source is reflected twice or more times in the process of becoming the final emergent light and finally emitted into human eyes.
5. The thin, large field angle, near-to-eye display device of claim 4, wherein: the display optical path comprises a multiple reflection structure comprising multiple reflection surfaces and/or polarizing plates, and/or multiple reflection prisms, and/or multiple reflection polarizing plates, and/or polarization transmitters, and/or polarization change reflectors, and/or polarization change devices.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220558506.4U CN218728356U (en) | 2022-03-15 | 2022-03-15 | Thin type large-field-angle near-to-eye display device |
| US17/719,482 US11846781B2 (en) | 2018-09-29 | 2022-04-13 | Thin type large field of view near-eye display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220558506.4U CN218728356U (en) | 2022-03-15 | 2022-03-15 | Thin type large-field-angle near-to-eye display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218728356U true CN218728356U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220558506.4U Active CN218728356U (en) | 2018-09-29 | 2022-03-15 | Thin type large-field-angle near-to-eye display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218728356U (en) |
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2022
- 2022-03-15 CN CN202220558506.4U patent/CN218728356U/en active Active
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| GR01 | Patent grant | ||
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Google Inc. Assignor: BEIJING ANTVR TECHNOLOGY Co.,Ltd. Contract record no.: X2024990000126 Denomination of utility model: A thin and large field of view near eye display device Granted publication date: 20230324 License type: Common License Record date: 20240411 |