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.

公开(公告)号：US11872014B2

公开(公告)日：2024-01-16

申请号：US17564143

申请日：2021-12-28

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai

IPC: A61B5/00 ,  A61B5/1455

CPC classification number: A61B5/0059 ,  A61B5/14552 ,  A61B2560/0252 ,  A61B2562/0233 ,  A61B2562/0271

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.

公开(公告)号：US11213217B2

公开(公告)日：2022-01-04

申请号：US16595655

申请日：2019-10-08

Applicant: PixArt Imaging Inc.

Inventor： Wei-Ru Han ,  Chih-Yuan Chuang ,  Cheng-Nan Tsai ,  Ren-Hau Gu

IPC: A61B5/02 ,  A61B5/026 ,  A61B5/0295 ,  A61B5/00 ,  A61B5/024

Abstract: A physiological detection system including an array sensor and a processing unit is provided. The array sensor is configured to output array PPG signals. The processing unit is configured to construct a 3D energy distribution according to the array PPG signals to accordingly identify different microcirculation states.

公开(公告)号：US20250093248A1

公开(公告)日：2025-03-20

申请号：US18971651

申请日：2024-12-06

Applicant: PixArt Imaging Inc.

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

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

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：US11918329B2

公开(公告)日：2024-03-05

申请号：US17238378

申请日：2021-04-23

Applicant: PixArt Imaging Inc.

Inventor： Chiung-Wen Lin ,  Wei-Ru Han ,  Yang-Ming Chou ,  Cheng-Nan Tsai ,  Ren-Hau Gu ,  Chih-Yuan Chuang

IPC: A61B5/00 ,  A61B5/024

CPC classification number: A61B5/02427 ,  A61B5/742 ,  A61B5/7485 ,  A61B2562/046

Abstract: A physiological detection device includes system including a first array PPG detector, a second array PPG detector, a display and a processing unit. The first array PPG detector is configured to generate a plurality of first PPG signals. The second array PPG detector is configured to generate a plurality of second PPG signals. The display is configured to show a detected result of the physiological detection system. The processing unit is configured to convert the plurality of first PPG signals and the plurality of second PPG signals to a first 3D energy distribution and a second 3D energy distribution, respectively, and control the display to show an alert message.

公开(公告)号：US11268859B2

公开(公告)日：2022-03-08

申请号：US16850187

申请日：2020-04-16

Applicant: PIXART IMAGING INC.

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

IPC: G01J5/02 ,  G01J5/04 ,  H04N5/33 ,  G01J5/06 ,  H04N5/225 ,  B81B7/00

Abstract: A wearable device includes a case and a far infrared temperature sensing device. The case has a first opening. The far infrared temperature sensing device is disposed inside the case of the wearable device. The far infrared temperature sensing device includes an assembly structure, a sensor chip, a filter structure, and a metal shielding structure. The assembly structure has an accommodating space and a top opening. The sensor chip is disposed in the accommodating space of the assembly structure. The filter structure is disposed above the sensor chip. The metal shielding structure is disposed above the sensor chip, and has a second opening to expose the filter structure. The first and second openings are communicated to cooperatively define a through hole.

公开(公告)号：US09818245B2

公开(公告)日：2017-11-14

申请号：US15343509

申请日：2016-11-04

Applicant: PixArt Imaging Inc.

Inventor： Chih-Yuan Chuang ,  Cheng-Nan Tsai ,  Yen-Min Chang

IPC: G05B19/00 ,  G07C9/00

CPC classification number: G07C9/00087 ,  G07C9/00071 ,  G07C9/00896 ,  G07C2009/00095

Abstract: A control system including a detection device and a control host is provided. The detection device is configured to detect a biometric characteristic to accordingly identify a user ID, and output an ID signal according to the user ID. The control host is configured to receive the ID signal to accordingly perform an individualized control associated with the user ID.

公开(公告)号：US09354749B2

公开(公告)日：2016-05-31

申请号：US14052481

申请日：2013-10-11

Applicant: PixArt Imaging Inc.

Inventor： Cheng-Nan Tsai ,  Tzung-Min Su ,  Chih-Hsin Lin ,  Yaun-Yu Peng ,  Yu-Chia Lin ,  Chuan-Ching Lin ,  Teng Wei Hsu

IPC: G06F3/042

CPC classification number: G06F3/042

Abstract: There is provided an optical touch system including a touch surface, a plurality of image sensors and a plurality or compensation light sources, wherein each of the image sensors is adjacent to one of the compensation light sources. When one of the image sensors is capturing an image frame, the compensation light source not adjacent to and within a field of view of the image sensor which is capturing the image frame irradiates so as to compensate a brightness distribution of the image frame.

Abstract translation: 提供了一种包括触摸表面，多个图像传感器和多个或补偿光源的光学触摸系统，其中每个图像传感器与补偿光源中的一个相邻。 当其中一个图像传感器正在拍摄图像帧时，不相邻并且在拍摄图像帧的图像传感器的视场内的补偿光源被照射以补偿图像帧的亮度分布。

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.