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公开(公告)号：US20190196309A1
公开(公告)日：2019-06-27
申请号：US16136266
申请日：2018-09-20
Applicant: Coretronic Corporation
Inventor： Chuan-Te Cheng , Yen-Lin Chen , Chih-Wei Shih , Chin-Sheng Chao
Abstract: A projection device including at least one projection module and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide an image beam. The image beam is transmitted along a light transmission path to a projection target and forms a projection image. The adjusting structure is connected to the projection module. The adjusting structure is adapted to drive at least a part of the projection module to rotate along the optical axis such that the projection image rotates.
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公开(公告)号：US20190187547A1
公开(公告)日：2019-06-20
申请号：US16215660
申请日：2018-12-11
Applicant: Coretronic Corporation
Inventor： Chih-Wei Shih , Yi Hung , Meng-Hsuan Lin
Abstract: A projection apparatus including an image device and an illumination system is provided. The image device is configured to convert an illumination beam into an image beam. The illumination system includes an illumination light source, a diffusion device and a light uniform device. The illumination light source provides the illumination beam. The illumination beam is transmitted to the image device through the diffusion device and the light uniform device sequentially. The image beam leaves the projection apparatus and converges at a stop. The stop is located outside the projection apparatus. The image beam on the stop has desirable uniformity of an energy intensity distribution.
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公开(公告)号：US20180335628A1
公开(公告)日：2018-11-22
申请号：US15920469
申请日：2018-03-14
Applicant: Coretronic Corporation
Inventor： Yi Hung , Chih-Wei Shih , Chuan-Te Cheng
CPC classification number: G02B27/0172 , G02B6/0028 , G02B6/0055 , G02B27/0081 , G02B2027/012 , G02B2027/0125
Abstract: A HMD device includes an illumination system, a display device, a lens module and a waveguide system. The illumination system includes an aperture stop. The display device converts an illumination beam into an image beam. The waveguide system guides the image beam, and projects the image beam to a projection target. The waveguide system includes a first waveguide element and a second waveguide element. The image beam is projected to the projection target through the lens module, the first and the second waveguide elements, and is converged to a first stop within the first waveguide element. The first stop is located in the first waveguide element. The image beam is projected to a second stop outside the second waveguide element. The second stop is located at the projection target. The illumination beam is converged to a third stop within the illumination system. The aperture stop is located at the third stop.
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公开(公告)号：US20220066216A1
公开(公告)日：2022-03-03
申请号：US17412269
申请日：2021-08-26
Applicant: Coretronic Corporation
Inventor： Chih-Wei Shih , Hung-Ta Chien
Abstract: A manufacturing method of waveguide and a head mounted display device having the waveguide are provided. The head mounted display device is configured to be placed in front of at least one eye of a user, and includes a display unit, the first waveguide and the 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 the at least eye of the user, and the second waveguide can extend a light transmission path and provide a uniform image beam.
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公开(公告)号：US20210278668A1
公开(公告)日：2021-09-09
申请号：US16812370
申请日：2020-03-09
Applicant: Coretronic Corporation
Inventor： Chih-Wei Shih , Chung-Ting Wei , Chuan-Te Cheng
Abstract: The invention relates to a near eye display device. A first waveguide element includes first light splitting elements for splitting an image beam, an inclined surface, and an antireflection structure. The image beam enters the first waveguide element from a first light input surface. The image beam, after being reflected by the inclined surface, is transmitted to the first light splitting elements and leaves the first waveguide element from a first light output surface. A distance is provided between the first light input surface and a second light output surface. The antireflection structure is located in a connected region of the first light input surface and the inclined surface and is configured to eliminate the condition that a part of the image beam incident from the first light input surface is reflected twice on the inclined surface to solve the problem of ghost image and provide high display quality.
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Patent Agency Ranking
公开(公告)号：US20210149201A1
公开(公告)日：2021-05-20
申请号：US16689097
申请日：2019-11-20
Applicant: Coretronic Corporation
Inventor： Chih-Wei Shih , Yi Hung , Chuan-Te Cheng
Abstract: A HMD device including a display, a first waveguide element and a second waveguide element is provided. The first waveguide element comprises a first light incident surface, a first light emerging surface and a plurality of first light splitting elements. An image beam is incident to the first waveguide element through the first light incident surface, and leaves the first waveguide element through the first light emerging surface. The second waveguide element comprises a second light incident surface, a second light emerging surface and a plurality of second light splitting elements. The image beam is incident to the second waveguide element through the second light incident surface. The image beam leaves through the second light emerging surface and is projected to the projection target. A reflectivity of the Nth one of the second light splitting elements is smaller than or equal to a reflectivity of the (N+1)th one of the second light splitting elements.
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公开(公告)号：US20210141230A1
公开(公告)日：2021-05-13
申请号：US17088508
申请日：2020-11-03
Applicant: Coretronic Corporation
Inventor： Chih-Wei Shih
Abstract: 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：US10809609B2
公开(公告)日：2020-10-20
申请号：US16215660
申请日：2018-12-11
Applicant: Coretronic Corporation
Inventor： Chih-Wei Shih , Yi Hung , Meng-Hsuan Lin
Abstract: A projection apparatus including an image device and an illumination system is provided. The image device is configured to convert an illumination beam into an image beam. The illumination system includes an illumination light source, a diffusion device and a light uniform device. The illumination light source provides the illumination beam. The illumination beam is transmitted to the image device through the diffusion device and the light uniform device sequentially. The image beam leaves the projection apparatus and converges at a stop. The stop is located outside the projection apparatus. The image beam on the stop has desirable uniformity of an energy intensity distribution.
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公开(公告)号：US10768513B2
公开(公告)日：2020-09-08
申请号：US16136266
申请日：2018-09-20
Applicant: Coretronic Corporation
Inventor： Chuan-Te Cheng , Yen-Lin Chen , Chih-Wei Shih , Chin-Sheng Chao
Abstract: A projection device including at least one projection module and at least one adjusting structure is provided. The projection module has at least one optical axis. The projection module is adapted to provide an image beam. The image beam is transmitted along a light transmission path to a projection target and forms a projection image. The adjusting structure is connected to the projection module. The adjusting structure is adapted to drive at least a part of the projection module to rotate along the optical axis such that the projection image rotates.
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公开(公告)号：US10422997B2
公开(公告)日：2019-09-24
申请号：US15920469
申请日：2018-03-14
Applicant: Coretronic Corporation
Inventor： Yi Hung , Chih-Wei Shih , Chuan-Te Cheng
Abstract: A HMD device includes an illumination system, a display device, a lens module and a waveguide system. The illumination system includes an aperture stop. The display device converts an illumination beam into an image beam. The waveguide system guides the image beam, and projects the image beam to a projection target. The waveguide system includes a first waveguide element and a second waveguide element. The image beam is projected to the projection target through the lens module, the first and the second waveguide elements, and is converged to a first stop within the first waveguide element. The first stop is located in the first waveguide element. The image beam is projected to a second stop outside the second waveguide element. The second stop is located at the projection target. The illumination beam is converged to a third stop within the illumination system. The aperture stop is located at the third stop.
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