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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
发明人： Chih-Wei Shih , Hung-Ta Chien
摘要： 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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82.发明申请公开(公告)号：US20220066214A1
公开(公告)日：2022-03-03
申请号：US17233521
申请日：2021-04-18
发明人： Hung-Ta Chien
摘要： The disclosure provides an optical waveguide, a manufacturing method of an optical waveguide, and a head-mounted display device. The optical waveguide has a first optical region and a second optical region for transmitting an image beam. The optical waveguide includes a plate body, multiple first light-guiding optical elements, and multiple optical microstructures. The first light-guiding optical elements are disposed in parallel lines on a light-guiding plane inside the plate body. The light-guiding plane is located in the first optical region, and there is a spacing between the adjacent first light-guiding optical elements. The image beam transmitted to the light-guiding plane is separated into multiple sub image beams, and the transmission paths of the sub image beams are at least partially different. The optical coupling-out structure is disposed in the plate body and is located in the second optical region.
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公开(公告)号：US11256165B2
公开(公告)日：2022-02-22
申请号：US17144142
申请日：2021-01-08
发明人： Te-Ying Tsai , Kun-Chieh Chan
摘要： A projection device and a heat dissipation control method are provided. The projection device includes a closed accommodating space, and a heating element, a cooling element, and an active dehumidification unit that are located inside the closed accommodating space. The heat dissipation control method includes the following steps: obtaining specification temperature information by a specification temperature information obtaining unit, and determining a specification temperature of the cooling element according to the specification temperature information; sensing an ambient temperature and an ambient humidity inside the closed accommodating space by a temperature and humidity sensing unit, and calculating a dew point temperature according to the ambient temperature and the ambient humidity; obtaining a cold end temperature of a cold end surface by a temperature sensing unit; and determining, based on the dew point temperature, the specification temperature, and the cold end temperature, whether to turn on or off the active dehumidification unit.
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公开(公告)号：US11256164B2
公开(公告)日：2022-02-22
申请号：US17195646
申请日：2021-03-09
发明人： Mao-Min Fu , Hung-Pin Chen , Yen-Po Chang , Chien-Ming Peng
摘要： An optical element includes a prism and a light blocking member. The prism has a first surface, a second surface and a third surface. The first surface is connected to the second surface. The third surface is connected between the first and second surfaces and opposite to a light valve of a projection device. The first surface reflects an image light beam from the light valve to allow the image light beam to pass through the second surface. The light blocking member is disposed on the prism and includes a first light blocking portion and a second light blocking portion adjacent to each other. The first light blocking portion shields a part of the first surface adjacent to the second surface, and the second light blocking portion shields a part of the second surface adjacent to the first surface. A projection device using the optical element is also provided.
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公开(公告)号：US11249376B2
公开(公告)日：2022-02-15
申请号：US16920762
申请日：2020-07-06
发明人： Chun-Hsien Wu , Kuang-Yao Liu
IPC分类号： G03B21/14
摘要： Provided are a projector and a lens adjusting module. The projector includes a main body, a light source disposed on the main body and providing an illumination beam, a light valve disposed on the main body and converting the illumination beam into an image beam, a projection lens movably disposed on the main body in a moving direction and projecting the image beam, and the lens adjusting module. The lens adjusting module includes a driven member connected to the projection lens and having a limiting flange, a limiting structure connected to the main body, and a rotating member screwed to the driven member and rotating to drive the driven member and the projection lens to move in a moving direction. The limiting structure is adapted to stop the limiting flange to limit a movement range of the driven member in the moving direction.
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公开(公告)号：US20220035127A1
公开(公告)日：2022-02-03
申请号：US17199452
申请日：2021-03-12
发明人： Ching-Chuan Wei , Yi-Chin Chen
摘要： A projection lens projecting an image beam provided by a light valve onto a screen is provided. The projection lens includes first to fourth lenses in order from a screen side to a display side along an optical axis. Each lens has a screen side surface facing the screen side and allowing the image beam to pass, and a display side surface facing the display side and allowing the image beam to pass. The first and third lenses have a negative refractive power, and the second and fourth lenses have a positive refractive power. The projection lens satisfies 2
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公开(公告)号：US20220005202A1
公开(公告)日：2022-01-06
申请号：US17364892
申请日：2021-07-01
发明人： Huai-En Wu
摘要： The invention provides an image segmentation method and an electronic device. The image segmentation method includes the following steps. Regression analysis is performed on a first gray-scale image to obtain a residual image having an object backbone area. A pixel value of each pixel in the object backbone area is defined as an average gray-scale value of the object backbone area in the residual image, and a second gray-scale image having the object backbone area is generated. It is recursively determined whether a residual polarity of each adjacent pixel adjacent to edge pixels of the object backbone area in the residual image is the same as a residual polarity of the corresponding edge pixel, and whether a pixel value of each adjacent pixel is greater than a first threshold, so as to expand the object backbone area in the second gray-scale image, which is extracted as a target object.
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公开(公告)号：US20220004054A1
公开(公告)日：2022-01-06
申请号：US17364879
申请日：2021-06-30
发明人： Ming-Chuan Chih , Wen-Chun Wang
IPC分类号： G02F1/1335 , G02F1/13363
摘要： A display device, including a first polarizing film, a pixel array module, a second polarizing film, and a first electronically controlled phase retardation module, is provided. The pixel array module is disposed in overlap with the first polarizing film. The second polarizing film is disposed in overlap with the pixel array module. The first electronically controlled phase retardation module includes a first liquid crystal layer, two first alignment layers, and two first conductive layers. The first liquid crystal layer and the first alignment layers are disposed between the first conductive layers. The second polarizing film is located between the pixel array module and the first electronically controlled phase retardation module. One of the first polarizing film and the second polarizing film directly contacts one of the first conductive layers of the first electronically controlled phase retardation module. The display device has a switchable viewing angle and is thinner and lighter.
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公开(公告)号：US11215855B2
公开(公告)日：2022-01-04
申请号：US16904539
申请日：2020-06-17
发明人： Ping-Yen Chen , Chung-Yang Fang , Yu-Wei Liang , Yin-Jen Lin
IPC分类号： G02F1/13 , G02F1/1333 , G02F1/1343 , G02F1/1335
摘要： The disclosure provides a screen anti-peeping protection layer arranged above a display panel. The screen anti-peeping protection layer includes a first polarizing layer, a second polarizing layer, a viewing angle adjusting layer and a touch sensing layer. The first polarizing layer and the second polarizing layer are sequentially arranged on a transmission path of a display beam which comes from the display panel. The viewing angle adjusting layer is arranged on the transmission path and located between the first polarizing layer and the second polarizing layer, and used for changing a range of an emitted light viewing angle of the display beam. The touch sensing layer is arranged on the transmission path, and located above the viewing angle adjusting layer and opposite to the first polarizing layer. The disclosure also provides a touch display device including the screen anti-peeping protection layer and the display panel as described above.
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公开(公告)号：US11215746B2
公开(公告)日：2022-01-04
申请号：US17202368
申请日：2021-03-16
发明人： Hui-Chuan Chen , Yu-Fan Chen
IPC分类号： F21V8/00
摘要： A dual display device includes a light source module, a first display panel and a second display panel. The light source module includes a light guide plate, a first prism sheet, a second prism sheet, a color conversion film, and a light source. The light guide plate has a first light exit surface, a second light exit surface and a light incident surface. The first light exit surface has a plurality of first microstructures. The first prism sheet is disposed beside the first light exit surface. The second prism sheet is disposed beside the second light exit surface. The color conversion film is disposed at least one of between the first prism sheet and the first light exit surface and between the second prism sheet and the second light exit surface. The dual display device of the invention has the advantages of thinner thickness and lighter weight.
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