公开(公告)号：US12222246B2

公开(公告)日：2025-02-11

申请号：US18330371

申请日：2023-06-07

Applicant: PIXART IMAGING INC.

Inventor： Chih-Ming Sun ,  Ming-Han Tsai ,  Cheng-Nan Tsai

IPC: G01J5/02 ,  B81B7/00 ,  G01J5/04 ,  G01J5/06 ,  H04N5/33 ,  H04N23/57

Abstract: A wearable device includes a case and a temperature sensing device. The case has a first opening. The temperature sensing device is disposed inside the case of the wearable device. The temperature sensing device includes a first substrate, a sensor chip, and a metal shielding structure. The sensor chip is disposed on the first substrate. The metal shielding structure surrounds the sensor chip, and has a second opening. The sensor chip faces towards the first opening and the second opening.

公开(公告)号：US12148279B2

公开(公告)日：2024-11-19

申请号：US17883625

申请日：2022-08-09

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC: G08B17/10 ,  G08B17/107

Abstract: A smoke detector includes a substrate, an optical detection module, a base and a top cover. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The base is disposed on the substrate and around the optical detection module. The base has a second block structure. The top cover is connected to the base. A lateral wall of the top cover is partly overlapped with the second block structure to form a guiding channel. The optical detection module analyzes variation of scattering parameters resulted from gaseous matter entering the top cover through the guiding channel for determining concentration of the gaseous matter.

公开(公告)号：US12046114B2

公开(公告)日：2024-07-23

申请号：US17741459

申请日：2022-05-11

Applicant: PixArt Imaging Inc.

Inventor： Yen-Chang Chu ,  Yen-Po Chen ,  Chih-Ming Sun ,  Cheng-Nan Tsai ,  Ching-Kun Chen

IPC: G08B17/10 ,  G08B17/107

CPC classification number: G08B17/107

Abstract: A smoke detection device includes a housing, a smoke collector, an optical detector and a cover plate. The housing has a piercing hole. The smoker collector has a smoke hole, and position of the smoke hole is close to position of the piercing hole. The optical detector is disposed inside the smoke collector and adapted to detect gaseous concentration inside the smoke collector. The cover plate is disposed between the housing and the smoke collector, and used to set a channel from the piercing hole to the smoke hole, so that gaseous matter flows from outside the smoke detection device into the smoke collector through the piercing hole and the smoke hole.

公开(公告)号：US20240054874A1

公开(公告)日：2024-02-15

申请号：US17883625

申请日：2022-08-09

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC: G08B17/107

CPC classification number: G08B17/107

Abstract: A smoke detector includes a substrate, an optical detection module, a base and a top cover. The substrate has a ring shape region surrounding a central detection region, and a first block structure of the central detection region is protruded from the substrate and higher than an upper surface of the ring shape region. The optical detection module is disposed inside the central detection region. The base is disposed on the substrate and around the optical detection module. The base has a second block structure. The top cover is connected to the base. A lateral wall of the top cover is partly overlapped with the second block structure to form a guiding channel. The optical detection module analyzes variation of scattering parameters resulted from gaseous matter entering the top cover through the guiding channel for determining concentration of the gaseous matter.

公开(公告)号：US11615684B2

公开(公告)日：2023-03-28

申请号：US17320222

申请日：2021-05-14

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC: G08B17/107

Abstract: There is provided a smoke detector including a light source, a reflective surface, a light sensor and a processor. The light sensor receives reflected light when the light source emits light toward the reflective surface, and generates a reference detection signal when there is no smoke. The processor receives the detection signal from the light sensor, and automatically selects a set of predetermined condition thresholds according to a profile of the detection signal to be compared with the detection signal thereby determining whether to generate an alarm according to the comparison result.

公开(公告)号：US11573127B2

公开(公告)日：2023-02-07

申请号：US16294873

申请日：2019-03-06

Applicant: PixArt Imaging Inc.

Inventor： Chih-Ming Sun ,  Sen-Huang Huang

IPC: G01J5/12 ,  G01J1/02 ,  G01J5/04 ,  G01J5/10 ,  G01J1/42 ,  G01J5/08 ,  G01J5/14 ,  G01J5/00

Abstract: A far infrared sensor package includes a package body and a plurality of far infrared sensor array integrated circuits. The plurality of far infrared sensor array integrated circuits are disposed on a same plane and inside the package body. Each of the far infrared sensor array integrated circuits includes a far infrared sensing element array of a same size.

公开(公告)号：US11054313B2

公开(公告)日：2021-07-06

申请号：US15394844

申请日：2016-12-30

Applicant: PixArt Imaging Inc.

Inventor： Chih-Ming Sun ,  Sen-Huang Huang

IPC: G01J5/10 ,  G01J5/12 ,  G01J1/02 ,  G01J5/04 ,  G01J1/42 ,  G01J5/08 ,  G01J5/14 ,  G01J5/00

Abstract: A far infrared sensor package includes a package body and a plurality of far infrared sensor array integrated circuits. The plurality of far infrared sensor array integrated circuits are disposed on a same plane and inside the package body. Each of the far infrared sensor array integrated circuits includes a far infrared sensing element array of a same size.

公开(公告)号：US20190204158A1

公开(公告)日：2019-07-04

申请号：US16294873

申请日：2019-03-06

Applicant: PixArt Imaging Inc.

Inventor： Chih-Ming Sun ,  Sen-Huang Huang

IPC: G01J5/12 ,  G01J1/42 ,  G01J5/04 ,  G01J5/14 ,  G01J5/10 ,  G01J5/08 ,  G01J1/02

CPC classification number: G01J5/12 ,  G01J1/0271 ,  G01J1/4228 ,  G01J5/045 ,  G01J5/0853 ,  G01J5/10 ,  G01J5/14 ,  G01J2005/0077 ,  G01J2005/123

Abstract: A far infrared sensor package includes a package body and a plurality of far infrared sensor array integrated circuits. The plurality of far infrared sensor array integrated circuits are disposed on a same plane and inside the package body. Each of the far infrared sensor array integrated circuits includes a far infrared sensing element array of a same size.

公开(公告)号：US12203838B2

公开(公告)日：2025-01-21

申请号：US18409848

申请日：2024-01-11

Applicant: PixArt Imaging Inc.

Inventor： Yen-Chang Chu ,  Cheng-Nan Tsai ,  Chih-Ming Sun

IPC: G01N15/06 ,  G08B17/107 ,  G08B29/18 ,  G01N15/00 ,  G01N15/075

Abstract: There is provided a smoke detector including a substrate, a light source and a light sensor. The light source and the light sensor are arranged adjacently on the substrate. The substrate is arranged with an asymmetric structure to cause an illumination region of the light source to deviate toward the light sensor thereby increasing a ratio of light intensity reflected by smoke with respect to reference light intensity.

公开(公告)号：US12106649B2

公开(公告)日：2024-10-01

申请号：US18509350

申请日：2023-11-15

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Guo-Zhen Wang ,  Ching-Kun Chen ,  Yen-Chang Chu ,  Chih-Ming Sun

IPC: G08B17/10 ,  G08B17/107

CPC classification number: G08B17/107

Abstract: There is provided a smoke detector including a first light source, a second light source surface, a light sensor and a processor. The light sensor receives reflected light when the first light source and the second light source emit light, and generates a first detection signal corresponding to light emission of the first light source and a second detection signal corresponding to light emission of the second light source. The processor distinguishes smoke and floating particles according to a similarity between the first detection signal and the second detection signal.