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公开(公告)号：US11644673B2
公开(公告)日：2023-05-09
申请号：US17088508
申请日：2020-11-03
发明人： Chih-Wei Shih
IPC分类号： G02B27/01
CPC分类号： G02B27/0172 , G02B2027/0121 , G02B2027/0123
摘要： A near-eye optical system receiving an image beam including a first optical waveguide is provided. The first optical waveguide expands the image beam in a first direction and includes first and second surfaces, first and second beam-splitting surfaces, and a plurality of first and second reflective inclined surfaces. The first and second beam-splitting surfaces are located in the first optical waveguide and disposed in a tilted manner relative to the first and second surfaces. The first and second beam-splitting surfaces have opposite tilt directions. The first and second beam-splitting surfaces receive an image beam incident from the first surface so that a first portion of the image beam passes through and a second portion of the image beam is reflected. The near-eye optical system further reduces a thickness of the optical waveguide and alleviates the issue that the image beam is not completely projected to the optical waveguide.
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公开(公告)号：US10545394B2
公开(公告)日：2020-01-28
申请号：US16136269
申请日：2018-09-20
发明人： Chuan-Te Cheng , Yen-Lin Chen , Chih-Wei Shih , Chin-Sheng Chao
摘要： A projection device including at least one projection module, at least one reflecting element, and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide a projection beam. The projection beam is transmitted along a light transmission path to a projection target to form a projection image. The reflecting element is disposed between the at least one projection module and the projection target and located on the optical axis and has a reflecting surface, wherein the reflecting surface is adapted to reflect the projection beam to the projection target. The adjusting structure is connected to the projection module and the reflecting element. The adjusting structure is adapted to drive the projection module and the reflecting element to rotate along a second axis such that the projection image rotates.
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公开(公告)号：US10466479B2
公开(公告)日：2019-11-05
申请号：US15287760
申请日：2016-10-07
发明人： Chih-Wei Shih , Yi-Sheng Lee , Chung-Ting Wei , Chuan-Te Cheng
摘要： An optical system including a first optical waveguide device, and a second optical waveguide device is provided. The first optical waveguide device includes a first light entering surface, a first light exiting surface and a first beam splitter. An image light emitted from the display enters the first optical waveguide device through the first light entering surface. The second optical waveguide device includes a second light entering surface, a second light exiting surface and a second beam splitter. The second light entering surface faces the first light exiting surface. A gap is formed between the second light entering surface and the first light exiting surface. Besides, a head-mounted display using the optical system described above is also provided.
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公开(公告)号：US20180203236A1
公开(公告)日：2018-07-19
申请号：US15813161
申请日：2017-11-15
发明人： Chih-Wei Shih , Chung-Ting Wei , Chuan-Te Cheng
CPC分类号： G02B27/0172 , G02B6/0026 , G02B6/0036 , G02B6/005 , G02B6/0076 , G02B6/0078 , G02B2027/0125
摘要： An optical system for receiving an image light is provided. A first optical waveguide device of the optical system includes a first light entering surface, a first light exiting surface and at least one beam splitter. A second optical waveguide device of the optical system includes a first surface, a second surface opposite to the first surface and at least one beam splitter. The image light enters the first optical waveguide device via the first light entering surface, and exits from the first optical waveguide device via the first light exiting surface. One part of the first surface is a second light entering surface, and the other part of the first surface is a second light exiting surface. The second surface has multiple optical microstructures.
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公开(公告)号：US11774755B2
公开(公告)日：2023-10-03
申请号：US17088584
申请日：2020-11-04
发明人： Kuei-En Peng , Chih-Wei Shih , Hung-Ta Chien
CPC分类号： G02B27/0101 , G02B6/34 , G02B27/0172 , G02B6/0016 , G02B2027/0187
摘要： A near-eye optical system, for receiving an image beam, includes an optical waveguide, configured to expand the image beam in a direction, and including a near-eye surface and a structure surface. The structure surface includes a light incident area and is opposite to the near-eye surface. The light incident area is located in a transmission path of the image beam. A plurality of reflective inclined surfaces are disposed on the structure surface and located at one side of the light incident surface and arranged along the direction. The structure surface is sequentially divided into the light incident area and a plurality of optical areas along the direction. A line number density of the reflective inclined surfaces in the optical area closest to the light incident area in the direction is less than a line number density of the reflective inclined surfaces in the optical area furthest from the light incident area in the direction.
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公开(公告)号：US20210278667A1
公开(公告)日：2021-09-09
申请号：US16810852
申请日：2020-03-06
发明人： Chih-Wei Shih , Chung-Ting Wei , Chuan-Te Cheng
摘要： A near eye display device includes a display and a first waveguide element, the first waveguide element including a light incoming surface, a light exiting surface, a reflective inclined surface and beam splitting elements. An image beam provided by the display enters the first waveguide element via the light incoming surface and is reflected by the reflective inclined surface in the first waveguide element to the beam splitting elements, and is split by the beam splitting elements and leaves the first waveguide element via the light exiting surface. The reflective inclined surface has a first reflectivity distribution in a first incident angle range and a second reflectivity distribution in a second incident angle range. An angle in the second incident angle range is greater than an angle in the first incident angle range, and the first reflectivity distribution has a greater reflectivity average value than the second reflectivity distribution.
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公开(公告)号：US10996465B2
公开(公告)日：2021-05-04
申请号：US16214136
申请日：2018-12-10
发明人： Chin-Sheng Chao , Chuan-Te Cheng , Chih-Wei Shih , Meng-Hsuan Lin
摘要： A projection device includes at least one projection module and at least one adjusting structure. The projection module has an optical axis and is adapted to emit an image beam. The image beam is transmitted to a projection target to form a projection image. The adjusting structure includes a base and an adjusting component. The adjusting component is rotatably connected to the base along a first axis, and the projection module is rotatably connected to the adjusting component along the optical axis. The adjusting component and the projection module are adapted to rotate along the first axis such that the projection image moves vertically, and the projection module is adapted to rotate along the optical axis such that the projection image rotates.
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公开(公告)号：US10545398B2
公开(公告)日：2020-01-28
申请号：US16136279
申请日：2018-09-20
发明人： Chuan-Te Cheng , Yen-Lin Chen , Chih-Wei Shih , Chin-Sheng Chao
摘要： A projection device including at least one projection module, at least one reflecting element, and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide a projection beam. The projection beam is transmitted along a light transmission path to a projection target to form a projection image. The reflecting element is disposed between the at least one projection module and the projection target and located on the optical axis and has a reflecting surface, wherein the reflecting surface is adapted to reflect the projection beam to the projection target. The adjusting structure is connected to the reflecting element. The adjusting structure is adapted to drive the reflecting element to rotate along a first axis such that the projection image moves horizontally.
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公开(公告)号：US20180101011A1
公开(公告)日：2018-04-12
申请号：US15287760
申请日：2016-10-07
发明人： Chih-Wei Shih , Yi-Sheng Lee , Chung-Ting Wei , Chuan-Te Cheng
CPC分类号： G02B27/0172 , G02B6/0028 , G02B6/0046 , G02B6/0075 , G02B27/0101
摘要： An optical system including a first optical waveguide device, and a second optical waveguide device is provided. The first optical waveguide device includes a first light entering surface, a first light exiting surface and a first beam splitter. An image light emitted from the display enters the first optical waveguide device through the first light entering surface. The second optical waveguide device includes a second light entering surface, a second light exiting surface and a second beam splitter. The second light entering surface faces the first light exiting surface. A gap is formed between the second light entering surface and the first light exiting surface. Besides, a head-mounted display using the optical system described above is also provided.
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公开(公告)号：US11960085B2
公开(公告)日：2024-04-16
申请号：US17412269
申请日：2021-08-26
发明人： Chih-Wei Shih , Hung-Ta Chien
CPC分类号： G02B27/0172 , G02B6/00 , G02B6/0075 , G02B6/10 , G02B2027/0187
摘要： A manufacturing method of a waveguide and a head mounted display device having the waveguide are provided. The head mounted display device includes a display unit, a first waveguide and a second waveguide. The display unit is configured to provide an image beam. The first waveguide is located between the display unit and the second waveguide. The first waveguide is configured to transmit the image beam to the second waveguide and adjust a light shape of the image beam to maintain a field angle and expand a pupil in a single dimension. The second waveguide is configured to transmit the image beam to outside of the head mounted display device, and the second waveguide can extend a light transmission path and provide a uniform image beam.
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