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：US20190015049A1

公开(公告)日：2019-01-17

申请号：US16120531

申请日：2018-09-04

Applicant: PixArt Imaging Inc.

Inventor： Chih-Yuan Chuang ,  Cheng-Nan Tsai ,  Ming-Tsan Kao ,  Ren-Hau Gu ,  Yen-Min Chang

IPC: A61B5/00 ,  A61B5/024 ,  A61B5/1455

Abstract: A biometric detection module including a light source module, a detection region and a control module is provided. The light source module is configured to emit green light, red light and IR light in a time division manner to illuminate a skin surface. The detection region is configured to detect penetration light emitted from the light source module for illuminating the skin surface and passing through body tissues to correspondingly generate a green light signal, a red light signal and an IR light signal. The control module is configured to determine a filtering parameter according to the green light signal to accordingly filter the red light signal and the IR light signal, and calculate a biometric characteristic according to at least one of the green light signal, a filtered red light signal and a filtered IR light signal.

公开(公告)号：US20160150960A1

公开(公告)日：2016-06-02

申请号：US14720845

申请日：2015-05-25

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Hung-Ching Lai ,  Chih-Yuan Chuang ,  Hung-Yu Lai ,  Yung-Chang Lin ,  Yi-Min Liu ,  Ren-Hau Gu

IPC: A61B5/00 ,  H05K5/06

CPC classification number: A61B5/0059 ,  A61B5/6801 ,  A61B2562/18

Abstract: An optical detecting module with waterproofing function can be installed on a housing of a wearable device and includes an optical detecting component, a light source and a packaging structure. The light source is disposed by the optical detecting component, and the packaging structure provides the waterproofing function to the optical detecting component and the light source. The packaging structure includes a main body, a light emitting unit, alight incoming unit and a waterproofing component. The main body covers the optical detecting component and the light source. The light emitting unit and the light incoming unit are disposed on the main body and respectively face the light source and the optical detecting component. The waterproofing component is filled into a gap formed between the main body and the housing, to prevent moisture from leaking into the gap to rust terminals of the optical detecting component and the light source.

Abstract translation: 具有防水功能的光学检测模块可以安装在可穿戴装置的壳体上，并且包括光学检测部件，光源和包装结构。 光源由光学检测部件设置，并且包装结构为光学检测部件和光源提供防水功能。 包装结构包括主体，发光单元，进出单元和防水部件。 主体覆盖光学检测部件和光源。 发光单元和光入射单元设置在主体上并分别面对光源和光学检测部件。 防水部件被填充到形成在主体和壳体之间的间隙中，以防止水分泄漏到光学检测部件和光源的间隙中以防锈端子。

公开(公告)号：US12188865B2

公开(公告)日：2025-01-07

申请号：US17722132

申请日：2022-04-15

Applicant: PIXART IMAGING INC.

Inventor： Cheng-Nan Tsai ,  Yen-Chang Chu ,  Chih-Ming Sun ,  Chi-Chih Shen ,  Kuo-Hsiung Li

IPC: G01N21/47 ,  G01N33/00 ,  G08B17/107 ,  G01N21/53

Abstract: There is provided an optical machine of a smoke detector including a substrate, a light source, a light sensor and a light blocking member. The light source and the light sensor are arranged on the substrate in a first direction. The light blocking member is arranged upon the light source and blocks a part of an emission angle of the light source in the first direction far away from the light sensor.

公开(公告)号：US11913864B2

公开(公告)日：2024-02-27

申请号：US17740392

申请日：2022-05-10

Applicant: PixArt Imaging Inc.

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

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

CPC classification number: G01N15/06 ,  G08B17/107 ,  G08B29/18 ,  G01N2015/0046 ,  G01N2015/0693

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：US20230252871A1

公开(公告)日：2023-08-10

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: G08B17/107

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：US20220117490A1

公开(公告)日：2022-04-21

申请号：US17564143

申请日：2021-12-28

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai

IPC: A61B5/00

Abstract: An optical detection device for physiological characteristic identification includes a substrate, a light source and an optical receiver. The light source includes a plurality of first lighting units and a plurality of second lighting units symmetrically arranged on the substrate. The optical receiver is disposed on the substrate and adapted to analyze optical signals emitted by the light source for acquiring a result of the physiological characteristic identification.