公开(公告)号：US20230161422A1

公开(公告)日：2023-05-25

申请号：US17535662

申请日：2021-11-25

Applicant: PixArt Imaging Inc.

Inventor： Sai Mun LEE ,  Hun Kwang LEE ,  Yee Loong CHIN

IPC: G06F3/03 ,  G06F3/0354

CPC classification number: G06F3/0317 ,  G06F3/03541

Abstract: An optical navigation device includes a casing, a circuit board, an illumination light source and an optical receiver. The casing is movably located above a navigation surface. The circuit board is disposed inside the casing. The illumination light source is disposed on the circuit board and adapted to provide an illumination channel toward the navigation surface. The optical receiver is disposed adjacent to the illumination light source. An imaging channel of the optical receiver is substantially parallel to a planar normal vector of the navigation surface, and the optical receiver is adapted to identify features on the navigation surface within a range crossed by the imaging channel and the illumination channel for providing navigation information.

公开(公告)号：US20190293419A1

公开(公告)日：2019-09-26

申请号：US15925773

申请日：2018-03-20

Applicant: PixArt Imaging Inc.

Inventor： Hun Kwang LEE ,  Sai Mun LEE ,  Lye Pin CHU

IPC: G01C3/08 ,  G06T7/73

Abstract: A distance detection device includes a light source, a light guiding component, an image sensor and a processor. The light guiding component is disposed adjacent to the light source and includes a discontinuous surface. The light guiding component is adapted to project a beam emitted from the light source onto an object to form an illuminating pattern spotted by the discontinuous surface. The image sensor is adapted to capture an image about the object. The processor is electrically connected with the image sensor and utilized to analyze position variation of a spot formed by the discontinuous surface within the image for determining a distance of the object.