公开(公告)号：US20240126092A1

公开(公告)日：2024-04-18

申请号：US17966891

申请日：2022-10-17

Applicant: PIXART IMAGING INC.

Inventor： Sai-Mun LEE ,  Hun-Kwang LEE ,  Yee-Loong CHIN ,  Chee-Pin T'NG

IPC: G02B27/09 ,  G01S7/481

CPC classification number: G02B27/0955 ,  G01S7/4815

Abstract: There is provided an optical navigation device including a substrate, a light sensor, a first light source, a second light source and a light directing member. The light sensor is arranged on the substrate and has a field of view (FOV) perpendicular to the substrate. The emission light of the first light source forms a first illumination light beam after passing the light directing member. The emission light of the second light source forms a second illumination light beam after passing the light directing member. A first crossover region of the first illumination light beam with the FOV is closer to the substrate than a second crossover region of the second illumination light beam with the FOV.

公开(公告)号：US20210003853A1

公开(公告)日：2021-01-07

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 ,  G06F3/0354 ,  G06F3/03

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.