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公开(公告)号：US11994416B2
公开(公告)日：2024-05-28
申请号：US18219729
申请日：2023-07-10
Applicant: PixArt Imaging Inc.
Inventor： Kuan-Choong Shim , Gim-Eng Chew , Priscilla Tze-Wei Goh , Meng-Yee Lim
CPC classification number: G01D5/3473
Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.
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公开(公告)号：US20240361158A1
公开(公告)日：2024-10-31
申请号：US18677941
申请日：2024-05-30
Applicant: PixArt Imaging Inc.
Inventor： Kuan-Choong Shim , Meng-Yee Lim , Priscilla Tze-Wei Goh , Gim-Eng Chew
CPC classification number: G01D5/34723 , G01D5/3473 , G01D18/001 , G01D2205/20
Abstract: There is provided an optical encoding system including a photodiode array and a code disk opposite to each other. The photodiode array includes a detection photodiode group and a calibration photodiode group. If there is a position deviation between the photodiode array and the code disk, whether to utilize detection signals of the calibration photodiode group is determined according to phase shifts between detection signals outputted by the detection photodiode group so as to eliminate the phase shifts.
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公开(公告)号：US12105297B2
公开(公告)日：2024-10-01
申请号：US18235884
申请日：2023-08-21
Applicant: PixArt Imaging Inc.
Inventor： Hun-Kwang Lee , Sai-Mun Lee , Priscilla Tze-Wei Goh , Lye-Pin Chu
IPC: G02B27/09 , G06F3/03 , G06F3/0354
CPC classification number: G02B27/0994 , G06F3/0304 , G06F3/03543
Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
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公开(公告)号：US12025476B1
公开(公告)日：2024-07-02
申请号：US18307801
申请日：2023-04-27
Applicant: PIXART IMAGING INC.
Inventor： Kuan-Choong Shim , Meng-Yee Lim , Priscilla Tze-Wei Goh , Gim-Eng Chew
CPC classification number: G01D5/34723 , G01D5/3473 , G01D18/001 , G01D2205/20
Abstract: There is provided an optical encoding system including a processor, and a photodiode array and a code disk opposite to each other. The photodiode array includes a detection photodiode group and a calibration photodiode group. If there is a position deviation between the photodiode array and the code disk, the processor determines whether to utilize detection signals of the calibration photodiode group according to phase shifts between detection signals outputted by the detection photodiode group so as to eliminate the phase shifts.
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Patent Agency Ranking
公开(公告)号：US11774771B2
公开(公告)日：2023-10-03
申请号：US17743036
申请日：2022-05-12
Applicant: PixArt Imaging Inc.
Inventor： Hun-Kwang Lee , Sai-Mun Lee , Priscilla Tze-Wei Goh , Lye-Pin Chu
IPC: G02B27/09 , G06F3/03 , G06F3/0354
CPC classification number: G02B27/0994 , G06F3/0304 , G06F3/03543
Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
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公开(公告)号：US11029527B2
公开(公告)日：2021-06-08
申请号：US16503711
申请日：2019-07-05
Applicant: PixArt Imaging Inc.
Inventor： Hun-Kwang Lee , Sai-Mun Lee , Priscilla Tze-Wei Goh , Lye-Pin Chu
IPC: G02B27/09 , G06F3/03 , G06F3/0354
Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, a light sensor, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light sensor is configured to receive at least a part of the light beam reflected or scattered by the illuminated surface.
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公开(公告)号：US20240419010A1
公开(公告)日：2024-12-19
申请号：US18820322
申请日：2024-08-30
Applicant: PixArt Imaging Inc.
Inventor： HUN-KWANG LEE , Sai-Mun Lee , Priscilla Tze-Wei Goh , Lye-Pin Chu
IPC: G02B27/09 , G06F3/03 , G06F3/0354
Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
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公开(公告)号：US11740108B2
公开(公告)日：2023-08-29
申请号：US17104822
申请日：2020-11-25
Applicant: PixArt Imaging Inc.
Inventor： Kuan-Choong Shim , Gim-Eng Chew , Priscilla Tze-Wei Goh , Meng-Yee Lim
CPC classification number: G01D5/3473
Abstract: There is provided an optical encoder including an encoding medium, multiple photodiodes and a signal processing circuit. The encoding medium includes an index track. The index track includes a first index pattern and a second index pattern. The multiple photodiodes include a first index photodiode, a second index photodiode and a reference index photodiode for receiving modulated light from the first index pattern and the second index pattern. When the first index photodiode is aligned with the first index pattern and the second index photodiode is aligned with the second index pattern, the signal processing circuit outputs a triggering signal.
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公开(公告)号：US11372255B2
公开(公告)日：2022-06-28
申请号：US17246938
申请日：2021-05-03
Applicant: PixArt Imaging Inc.
Inventor： Hun-Kwang Lee , Sai-Mun Lee , Priscilla Tze-Wei Goh , Lye-Pin Chu
IPC: G02B27/09 , G06F3/03 , G06F3/0354
Abstract: An optical mouse operated with respect to an illuminated surface outside the optical mouse is provided. The optical mouse includes a light source configured to emit a light beam, and a light pipe including a first optical element and a second optical element. The light beam enters the light pipe through the first optical element, and then propagates in the light pipe from the first optical element to the second optical element without reflection, and then leaves the light pipe through the second optical element, and then illuminates the illuminated surface. The light pipe does not have any protrusion extending therefrom and attached to a front surface of the light source.
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