公开(公告)号：US20180092181A1

公开(公告)日：2018-03-29

申请号：US15706970

申请日：2017-09-18

Applicant: ASAHI KASEI MICRODEVICES CORPORATION

Inventor： Yuji GODA

IPC: H05B33/08

CPC classification number: H05B33/0854 ,  G01J1/00

Abstract: Alight receiving device is equipped with a first light receiving element which outputs a first output signal corresponding to an amount of received light, a temperature information acquisition unit which acquires temperature information of the first light receiving element, a generation unit which generates compensating information of the first output signal, based on first output signals and temperature information when power is supplied to the first light receiving element in a plurality of power supply conditions and stores the same in a storage unit, and a compensation unit which compensates the first output signal, based on the temperature information and the compensating information when the first output signal is output. Thus, even when temperature characteristics of an optical element are varied, the temperature characteristics are compensated highly accurately.

公开(公告)号：US20210285872A1

公开(公告)日：2021-09-16

申请号：US17201056

申请日：2021-03-15

Applicant: Asahi Kasei Microdevices Corporation

Inventor： Yoshihiko KOIZUMI ,  Yuji GODA ,  Maksym BRYZGALOV

IPC: G01N21/3504

Abstract: A gas sensor module (100) includes an infrared light emitting diode (10) configured to emit infrared light in accordance with a drive current, a quantum infrared sensor (20) configured to detect infrared light that passes through a detection target gas, a drive circuit (30) configured to output the drive current to the infrared light emitting diode (10), a charging circuit (50) to be connected to a power source and configured to output a charge current having a smaller current amount than the drive current, and a capacitor (40) configured to charge by the charge current being supplied from the charging circuit (50) and discharge by supplying the drive current to the drive circuit (30).

公开(公告)号：US20190124738A1

公开(公告)日：2019-04-25

申请号：US16227316

申请日：2018-12-20

Applicant: ASAHI KASEI MICRODEVICES CORPORATION

Inventor： Yuta TAKAGI ,  Yuji GODA

IPC: H05B33/08 ,  H01L31/02 ,  H01L31/12

Abstract: A light-emitting/receiving device including: a diode-type light-emitting element formed on a semiconductor substrate; a diode-type light-receiving element formed on the semiconductor substrate; a light source driving unit configured to supply a first common voltage to an anode or a cathode of the light-emitting element to drive the light-emitting element; and a light signal processing unit configured to perform current/voltage conversion on an output current outputted from the light-receiving element, by referring to a second common voltage.