公开(公告)号：US20240151578A1

公开(公告)日：2024-05-09

申请号：US18318397

申请日：2023-05-16

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01J1/02 ,  G01J1/04 ,  G01S7/481 ,  G01S7/499 ,  G01S17/04 ,  G02B27/14

CPC classification number: G01J1/0204 ,  G01J1/0233 ,  G01J1/0414 ,  G01J1/0466 ,  G01J1/0488 ,  G01S7/4811 ,  G01S7/4813 ,  G01S7/499 ,  G01S17/04 ,  G02B27/144 ,  Y10T29/49016

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US10982996B2

公开(公告)日：2021-04-20

申请号：US16745483

申请日：2020-01-17

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G06M7/00 ,  G01J1/02 ,  G01J1/04 ,  G02B27/14 ,  G01S7/481 ,  G01S7/499 ,  G01S17/04

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US10578482B2

公开(公告)日：2020-03-03

申请号：US15458941

申请日：2017-03-14

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01V8/00 ,  G01J1/02 ,  G01J1/04 ,  G02B27/14 ,  G01S7/481 ,  G01S7/499 ,  G01S17/02

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US20210207992A1

公开(公告)日：2021-07-08

申请号：US17209635

申请日：2021-03-23

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01J1/02 ,  G01J1/04 ,  G02B27/14 ,  G01S7/481 ,  G01S7/499 ,  G01S17/04

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US20200149954A1

公开(公告)日：2020-05-14

申请号：US16745483

申请日：2020-01-17

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01J1/02 ,  G01S17/04 ,  G01S7/481 ,  G01S7/499 ,  G01J1/04 ,  G02B27/14

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US09696853B2

公开(公告)日：2017-07-04

申请号：US14796844

申请日：2015-07-10

Applicant: PIXART IMAGING INCORPORATION

Inventor： Ming-Tsan Kao ,  Hui-Hsuan Chen ,  Tien-Chia Liu ,  Hsin-Chia Chen

IPC: G06F3/0354 ,  G06F3/042 ,  G06F3/03

CPC classification number: G06F3/0421 ,  G06F3/0317 ,  G06F3/0425 ,  G06F2203/04109

Abstract: An optical touch apparatus includes a first light source, a second light source, a light guide device, a light reflecting device and an image sensing module. The first light source emits first light beam which travels within the light guide device and is reflective by an object close to or in contact with a surface of the light guide device to become a first image light beam. The first image light beam is reflected by a light reflecting device. The image sensing module receives the first image light beam. The second light source emits a second light beam, wherein when the optical touch apparatus moves on a working surface, the second light beam is reflective by the working surface to form a second image light beam which is received by the same image sensing module.

公开(公告)号：US20170184446A1

公开(公告)日：2017-06-29

申请号：US15458941

申请日：2017-03-14

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01J1/02 ,  G02B27/14 ,  G01J1/04

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.

公开(公告)号：US11692870B2

公开(公告)日：2023-07-04

申请号：US17209635

申请日：2021-03-23

Applicant: PixArt Imaging Incorporation

Inventor： Hui-Hsuan Chen ,  Nien-Tse Chen

IPC: G01S7/481 ,  G01J1/02 ,  G01J1/04 ,  G02B27/14 ,  G01S7/499 ,  G01S17/04

CPC classification number: G01J1/0204 ,  G01J1/0233 ,  G01J1/0414 ,  G01J1/0466 ,  G01J1/0488 ,  G01S7/4811 ,  G01S7/4813 ,  G01S7/499 ,  G01S17/04 ,  G02B27/144 ,  Y10T29/49016

Abstract: A proximity sensing device includes: a light source, a sensing unit, a light guide unit, and a window. The light source emits light, which is guided by the light guide unit to the window. The emitted light reflected by an object is received by the same window. The light guide unit includes a partial-transmissive-partial-reflective (PTPR) optical element, whereby the light emitted from the light source is reflected by the PTPR optical element, while the light reflected by the object passes through the PTPR optical element. There is only one window required.