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公开(公告)号：US11204543B2
公开(公告)日：2021-12-21
申请号：US16207032
申请日：2018-11-30
发明人： Tzu-Hai Chung , Wen-Chang Chien , Yu-Chi Wu
摘要： A projection apparatus includes a light valve, a lens module, a distance measuring module, a lens position detection module and a processor. The light valve forms an image beam. The lens module projects the image beam onto a display surface. The distance measuring module detects a distance between the lens module and the display surface to obtain a first distance value. The lens position detection module detects a position of the lens module to obtain a second distance value. The processor receives the first distance value from the distance measuring module, receives the second distance value from the lens position detection module and obtains an effective focus range according to the second distance value.
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公开(公告)号：US20210389629A1
公开(公告)日：2021-12-16
申请号：US17334798
申请日：2021-05-31
IPC分类号： G02F1/13357 , G02F1/1335
摘要： A backlight module includes a back plate, an optical element set, a wavelength conversion film, a light source, and an ink layer. The optical element set is disposed on the back plate and has a first surface, a second surface and at least one end surface. The first surface faces the back plate and is opposite to the second surface. The at least one end surface is connected to the first surface and the second surface. The wavelength conversion film is disposed on the back plate. The light source is adapted to provide light, and the light is transmitted to the wavelength conversion film and the optical element set. The ink layer is disposed on the at least one end surface of the optical element set. A display device is further provided. The backlight module and the display device may reduce the phenomenon of blue edge caused by light leakage.
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公开(公告)号：US11199764B2
公开(公告)日：2021-12-14
申请号：US16987407
申请日：2020-08-07
发明人： Jia-Hong Dai , Te-Ying Tsai , Chia-Lun Tsai , Chuan-Hui Liu
摘要： A light wavelength conversion element is configured to receive an excitation beam from a light incident side, comprising a substrate and a light wavelength conversion substance. The substrate has a surface facing the light incident side. The surface has at least one microstructure protruded toward the light incident side. The light wavelength conversion substance is disposed on the surface and covers the at least one microstructure. The light wavelength conversion substance is excited by the excitation beam and emits a conversion beam. The excitation beam forms an exciting light spot on the light wavelength conversion substance. The energy density distribution of the exciting light spot has at least one peak value. A position corresponding to the at least one peak value on the light wavelength conversion substance corresponds to a position of the at least one microstructure. Additionally, a projection apparatus is provided.
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公开(公告)号：US11199760B2
公开(公告)日：2021-12-14
申请号：US17067780
申请日：2020-10-12
摘要： The invention provides an optical module, including a first frame body, a second frame body, a first adjustment member, and a first optical component. The first frame body is rotatably connected to a base body and includes a first adjustment portion and a boss, and the first adjustment portion drives the first frame body to rotate with a first axial line as a rotating axis. The second frame body is rotatably connected to the first frame body and includes a second adjustment portion. The first adjustment member is screwed to the boss and moves along the first axial line relative to the boss to push the second adjustment portion and drive the second frame body to rotate with a second axial line as a rotating axis. The first optical component is disposed on the second frame body. The invention further provides a projector including the foregoing optical module.
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公开(公告)号：US11194325B2
公开(公告)日：2021-12-07
申请号：US16748751
申请日：2020-01-21
发明人： Bing-Syun Wu
IPC分类号： G05D1/00 , B64C39/02 , G05B19/048 , G08G5/00 , G05D1/08
摘要： An unmanned aerial vehicle and a fail-safe method thereof are provided. The unmanned aerial vehicle includes at least one actuator, a failure processing circuit, and a flight controller. The actuator is configured to drive the flight behavior of the unmanned aerial vehicle. The failure processing circuit is configured to: define a corresponding relationship between the multiple failure states and the multiple protection measures, wherein each protection measure is respectively defined with a priority level and each protection measure is used to correspondingly change the flight behavior of the unmanned aerial vehicle; determine multiple current failure states when the flight behavior takes place; and select, according to the corresponding relationship, the selected protection measure having the highest priority level among the protection measures corresponding to the current failure state. The flight controller is used to change the flight behavior of the unmanned aerial vehicle according to the selected protection measures.
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公开(公告)号：US20210364680A1
公开(公告)日：2021-11-25
申请号：US17315367
申请日：2021-05-10
发明人： HUI-CHUAN CHEN , YU-FAN CHEN
IPC分类号： G02B5/22 , F21V8/00 , G02F1/1335
摘要： A light source module includes a light guide plate, a light source, a first color conversion film, at least one optical film and an ink coating. The light guide plate has a first light-emitting surface, a second light-emitting surface opposite to the first light-emitting surface, and a light-incident surface connected between the first light-emitting surface and the second light-emitting surface. The light source is disposed beside the light-incident surface. The first color conversion film is disposed beside the first light-emitting surface. The at least one optical film is disposed beside the light guide plate. The ink coating is disposed on a surface edge or an end surface of at least one of the light guide plate, the first color conversion film, and the at least one optical film, and is configured to allow light to pass therethrough. A display device of the invention is further provided.
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公开(公告)号：US20210349335A1
公开(公告)日：2021-11-11
申请号：US17243471
申请日：2021-04-28
发明人： Ping-Yen Chen , Wen-Chun Wang , Chung-Yang Fang , Yang-Ching Lin
IPC分类号： G02F1/13 , G02F1/1337 , G02F1/1335
摘要： A viewing angle limiting device, including a polymer substrate and a plurality of dye molecules, is provided. The dye molecules are dispersedly arranged in the polymer substrate. The dye molecules have a first absorption coefficient in a thickness direction of the polymer substrate. The dye molecules have a second absorption coefficient in a direction perpendicular to the thickness direction. A ratio of the first absorption coefficient to the second absorption coefficient is between 10 and 1000. A manufacturing method of the viewing angle limiting device and a display device including the viewing angle limiting device are also provided. The display device, the viewing angle limiting device, and the manufacturing method thereof provided by the invention have a large viewing angle filtering effect and have higher light transmittance in a viewing angle direction.
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公开(公告)号：US11172178B2
公开(公告)日：2021-11-09
申请号：US16741764
申请日：2020-01-14
发明人： Huai-En Wu
摘要： A projection system including a first projection device and a first image capturing device is provided. The first projection device projects a first projection image. The first projection image includes a plurality of different color lights and has color blocks of different brightnesses formed by the plurality of different color lights. The first image capturing device captures the first projection image to generate a first captured image. The first image capturing device includes a first processor. The first processor converts the first captured image into a first converted image according to a first conversion matrix. A color gradation adjustment operation is performed on the first converted image to output an adjustment signal, and the first projection device adjusts the projected first projection image according to the adjustment signal. An image color correction method is also provided.
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公开(公告)号：US20210337644A1
公开(公告)日：2021-10-28
申请号：US17207726
申请日：2021-03-21
发明人： Guo-Cheng Hung , Ho-Yi Yeh , Nan-Jiun Yin
IPC分类号： H05B45/56 , H05B45/375
摘要： The disclosure provides a light emitting device including a power conversion circuit configured to provide a power voltage, a light source module receives the power voltage, a driving circuit, and a control circuit. The driving circuit is configured to drive a plurality of light emitting units in the light source module and detect a current value flowing through each light emitting unit to generate a current signal. The control circuit is coupled to the power conversion circuit, the light source module, and the driving circuit and is configured to detect a cross-voltage of at least one of the light emitting units. The control circuit calculates a voltage offset value according to a difference between the cross-voltage and the power voltage to generate a control signal according to the voltage offset value and the current signal to accordingly control the power conversion circuit to adjust the power voltage.
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公开(公告)号：US20210318604A1
公开(公告)日：2021-10-14
申请号：US17355210
申请日：2021-06-23
发明人： YU-LIN TSAI , WEI-HUA KAO
摘要： A manufacturing method of a wavelength-converting component includes providing a substrate, providing a wavelength-converting layer and providing a reflective layer. The reflective layer is disposed on the substrate. The wavelength-converting layer is disposed on a surface of the reflective layer away from the substrate. The wavelength-converting layer includes a wavelength-converting material and a second organic adhesive. The wavelength-converting material is mixed in the second organic adhesive. The second organic adhesive includes an aromatic polyimide. The wavelength-converting component manufactured by the method of the invention can improve mechanical properties such as shear strength, tensile strength and fatigue strength, temperature resistance and reflectivity, and can reduce rates of moisture absorption. The projection apparatus including the wavelength-converting component can reduce degradation in image brightness.
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