CA2007784A1 - Photocapteur - Google Patents

Photocapteur

Info

Publication number
CA2007784A1
CA2007784A1 CA2007784A CA2007784A CA2007784A1 CA 2007784 A1 CA2007784 A1 CA 2007784A1 CA 2007784 A CA2007784 A CA 2007784A CA 2007784 A CA2007784 A CA 2007784A CA 2007784 A1 CA2007784 A1 CA 2007784A1
Authority
CA
Canada
Prior art keywords
light emitting
light
emitting element
change
photodiode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2007784A
Other languages
English (en)
Other versions
CA2007784C (fr
Inventor
Masahiko Kanda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1989004137U external-priority patent/JPH0622323Y2/ja
Priority claimed from JP1116757A external-priority patent/JPH02295542A/ja
Application filed by Individual filed Critical Individual
Publication of CA2007784A1 publication Critical patent/CA2007784A1/fr
Application granted granted Critical
Publication of CA2007784C publication Critical patent/CA2007784C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/024—Measuring pulse rate or heart rate
    • A61B5/02416—Measuring pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
    • G01J1/28—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source
    • G01J1/30—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors
    • G01J1/32—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors adapted for automatic variation of the measured or reference value

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Physiology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Led Devices (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
CA002007784A 1989-01-17 1990-01-15 Photocapteur Expired - Fee Related CA2007784C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1989004137U JPH0622323Y2 (ja) 1989-01-17 1989-01-17 光センサ
JP1-4137 1989-01-17
JP1116757A JPH02295542A (ja) 1989-05-10 1989-05-10 光センサ
JP1-116757 1989-05-10

Publications (2)

Publication Number Publication Date
CA2007784A1 true CA2007784A1 (fr) 1990-07-17
CA2007784C CA2007784C (fr) 1994-08-02

Family

ID=26337857

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002007784A Expired - Fee Related CA2007784C (fr) 1989-01-17 1990-01-15 Photocapteur

Country Status (6)

Country Link
US (1) US5045683A (fr)
EP (1) EP0379140A1 (fr)
KR (1) KR930004897B1 (fr)
CN (1) CN1019051B (fr)
CA (1) CA2007784C (fr)
RU (1) RU2006832C1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0472963A3 (en) * 1990-08-27 1992-07-08 Sumitomo Electric Industries, Limited Light emitting diode for photosensor and photosensor using such light emitting diode
US5198701A (en) * 1990-12-24 1993-03-30 Davies Robert B Current source with adjustable temperature variation
JP3387171B2 (ja) 1993-09-28 2003-03-17 セイコーエプソン株式会社 脈波検出装置および運動強度測定装置
EP0733894B1 (fr) * 1995-03-24 2003-05-07 Nohmi Bosai Ltd. Capteur pour détection des particules fines comme fumée
JP3487383B2 (ja) * 1995-07-06 2004-01-19 株式会社ニコン 露光装置及びそれを用いる素子製造方法
WO2001011356A2 (fr) * 1999-08-06 2001-02-15 Roche Diagnostics Corporation Procedes et appareil de determination du temps de coagulation
RU2175523C1 (ru) * 2000-11-30 2001-11-10 Закрытое акционерное общество "МИКАРД-ЛАНА" Пульсовой оксиметр
US20030048375A1 (en) * 2001-09-11 2003-03-13 Thorstein Seim Method and apparatus for digitizing light measurements by computer control of light source emission
RU2301408C2 (ru) * 2002-12-30 2007-06-20 Закрытое акционерное общество "СибНИИстрой" Установка для определения общего коэффициента пропускания света оконных блоков и измерительный блок для нее
KR100848118B1 (ko) * 2007-05-03 2008-07-24 삼성전자주식회사 광 센서 생체 신호 측정 장치 및 상기 장치의 광 센서 제어방법
JP2009150791A (ja) * 2007-12-21 2009-07-09 Oputo System:Kk 発光体の測光装置
US9239619B2 (en) 2013-11-08 2016-01-19 Applied Invention, Llc Use of light transmission through tissue to detect force
KR102369794B1 (ko) 2015-11-18 2022-03-03 한화테크윈 주식회사 조도 감지 시스템 및 이를 채용한 감시 카메라
US10433387B2 (en) 2016-12-28 2019-10-01 Asahi Kasei Microdevices Corporation Light emitting device and light emitting and receiving device
JP6824048B2 (ja) * 2017-01-20 2021-02-03 アズビル株式会社 投光回路
CN109008987A (zh) * 2017-11-09 2018-12-18 杭州暖芯迦电子科技有限公司 一种光电式生物传感器及其加热控制方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182977A (en) * 1978-06-01 1980-01-08 Trw Inc. Constant output light emitting device
NL191373C (nl) * 1980-07-15 1995-06-16 Tno Inrichting voor het sturen van de brandstoftoevoer aan een verbrandingsmotor.
US4431947A (en) * 1982-06-04 1984-02-14 The Singer Company Controlled light source
JPS59146069A (ja) * 1983-02-08 1984-08-21 Canon Inc 光源安定化装置
DE3483065D1 (de) * 1983-05-11 1990-10-04 Nellcor Inc Sensor mit an die hautoberflaeche angepasster form.
US4586273A (en) * 1983-12-28 1986-05-06 Bernard Chapnick Shoe insert construction
US4701607A (en) * 1985-04-15 1987-10-20 Arel Control Systems, Ltd. Temperature control laser detection apparatus
JPS6323645A (ja) * 1986-05-27 1988-01-30 住友電気工業株式会社 反射加温型オキシメ−タ
US4724314A (en) * 1986-08-21 1988-02-09 Harbor Branch Oceanographic Institution Inc. Material characteristics measuring methods and devices
JPS63193582A (ja) * 1987-02-06 1988-08-10 Ando Electric Co Ltd レ−ザダイオ−ド駆動回路
JPH01167139A (ja) * 1987-12-23 1989-06-30 Brother Ind Ltd 光学センサーの制御装置

Also Published As

Publication number Publication date
EP0379140A1 (fr) 1990-07-25
CN1044216A (zh) 1990-08-01
RU2006832C1 (ru) 1994-01-30
US5045683A (en) 1991-09-03
CN1019051B (zh) 1992-11-11
CA2007784C (fr) 1994-08-02
KR930004897B1 (ko) 1993-06-09
KR910014686A (ko) 1991-08-31

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed