公开(公告)号：US20230393407A1

公开(公告)日：2023-12-07

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 ,  G06F3/03543 ,  G06F3/0304

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.

公开(公告)号：US20230349732A1

公开(公告)日：2023-11-02

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

IPC: G01D5/347

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.

公开(公告)号：US20220269093A1

公开(公告)日：2022-08-25

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

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.

公开(公告)号：US20210255470A1

公开(公告)日：2021-08-19

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.