Patents by Inventor Priscilla Tze-Wei GOH
Priscilla Tze-Wei GOH has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12105297Abstract: 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.Type: GrantFiled: August 21, 2023Date of Patent: October 1, 2024Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
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Publication number: 20240230321Abstract: There is provided an optical encoding system including a photodiode array and a code disk opposite to each other. The code disk is arranged with multiple code slits at a ring area corresponding to the photodiode array. A length direction of each photodiode of the photodiode array has at least one deviation angle with respect to a length direction of the multiple code slits to reduce the total harmonic distortion in photocurrents.Type: ApplicationFiled: October 21, 2022Publication date: July 11, 2024Inventors: Meng-Yee LIM, Priscilla Tze-Wei GOH, Kuan-Choong SHIM, Gim-Eng CHEW
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Patent number: 12025476Abstract: 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.Type: GrantFiled: April 27, 2023Date of Patent: July 2, 2024Assignee: PIXART IMAGING INC.Inventors: Kuan-Choong Shim, Meng-Yee Lim, Priscilla Tze-Wei Goh, Gim-Eng Chew
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Patent number: 11994416Abstract: 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.Type: GrantFiled: July 10, 2023Date of Patent: May 28, 2024Assignee: PIXART IMAGING INC.Inventors: Kuan-Choong Shim, Gim-Eng Chew, Priscilla Tze-Wei Goh, Meng-Yee Lim
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Publication number: 20240133680Abstract: There is provided an optical encoding system including a photodiode array and a code disk opposite to each other. The code disk is arranged with multiple code slits at a ring area corresponding to the photodiode array. A length direction of each photodiode of the photodiode array has at least one deviation angle with respect to a length direction of the multiple code slits to reduce the total harmonic distortion in photocurrents.Type: ApplicationFiled: October 20, 2022Publication date: April 25, 2024Inventors: Meng-Yee LIM, Priscilla Tze-Wei GOH, Kuan-Choong SHIM, Gim-Eng CHEW
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Publication number: 20230393407Abstract: 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.Type: ApplicationFiled: August 21, 2023Publication date: December 7, 2023Inventors: HUN-KWANG LEE, SAI-MUN LEE, PRISCILLA TZE-WEI GOH, LYE-PIN CHU
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Publication number: 20230349732Abstract: 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.Type: ApplicationFiled: July 10, 2023Publication date: November 2, 2023Inventors: KUAN-CHOONG SHIM, GIM-ENG CHEW, PRISCILLA TZE-WEI GOH, MENG-YEE LIM
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Patent number: 11774771Abstract: 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.Type: GrantFiled: May 12, 2022Date of Patent: October 3, 2023Assignee: PIXART IMAGING INC.Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
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Patent number: 11740108Abstract: 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.Type: GrantFiled: November 25, 2020Date of Patent: August 29, 2023Assignee: PIXART IMAGING INC.Inventors: Kuan-Choong Shim, Gim-Eng Chew, Priscilla Tze-Wei Goh, Meng-Yee Lim
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Publication number: 20220269093Abstract: 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.Type: ApplicationFiled: May 12, 2022Publication date: August 25, 2022Inventors: HUN-KWANG LEE, SAI-MUN LEE, PRISCILLA TZE-WEI GOH, LYE-PIN CHU
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Patent number: 11372255Abstract: 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.Type: GrantFiled: May 3, 2021Date of Patent: June 28, 2022Assignee: PIXART IMAGING INC.Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
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Publication number: 20220163353Abstract: 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.Type: ApplicationFiled: November 25, 2020Publication date: May 26, 2022Inventors: Kuan-Choong SHIM, Gim-Eng CHEW, Priscilla Tze-Wei GOH, Meng-Yee LIM
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Publication number: 20210255470Abstract: 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.Type: ApplicationFiled: May 3, 2021Publication date: August 19, 2021Inventors: HUN-KWANG LEE, SAI-MUN LEE, PRISCILLA TZE-WEI GOH, LYE-PIN CHU
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Patent number: 11029527Abstract: 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.Type: GrantFiled: July 5, 2019Date of Patent: June 8, 2021Assignee: PIXART IMAGING INC.Inventors: Hun-Kwang Lee, Sai-Mun Lee, Priscilla Tze-Wei Goh, Lye-Pin Chu
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Publication number: 20210003853Abstract: 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.Type: ApplicationFiled: July 5, 2019Publication date: January 7, 2021Inventors: Hun-Kwang LEE, Sai-Mun LEE, Priscilla Tze-Wei GOH, Lye-Pin CHU