JPH0311673B2 - - Google Patents

Info

Publication number
JPH0311673B2
JPH0311673B2 JP58134927A JP13492783A JPH0311673B2 JP H0311673 B2 JPH0311673 B2 JP H0311673B2 JP 58134927 A JP58134927 A JP 58134927A JP 13492783 A JP13492783 A JP 13492783A JP H0311673 B2 JPH0311673 B2 JP H0311673B2
Authority
JP
Japan
Prior art keywords
signal
output
oscillation
frequency
light emitting
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.)
Expired - Lifetime
Application number
JP58134927A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6027882A (ja
Inventor
Kenichi Iyama
Tooru Hosaka
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.)
Dowa Holdings Co Ltd
Original Assignee
Dowa Mining Co Ltd
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
Application filed by Dowa Mining Co Ltd filed Critical Dowa Mining Co Ltd
Priority to JP58134927A priority Critical patent/JPS6027882A/ja
Priority to US06/526,873 priority patent/US4585940A/en
Priority to KR1019840002094A priority patent/KR900000689B1/ko
Publication of JPS6027882A publication Critical patent/JPS6027882A/ja
Publication of JPH0311673B2 publication Critical patent/JPH0311673B2/ja
Granted 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
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
JP58134927A 1983-07-23 1983-07-23 光学的検出装置 Granted JPS6027882A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP58134927A JPS6027882A (ja) 1983-07-23 1983-07-23 光学的検出装置
US06/526,873 US4585940A (en) 1983-07-23 1983-08-26 Optical detector
KR1019840002094A KR900000689B1 (ko) 1983-07-23 1984-04-20 광학 검출기

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58134927A JPS6027882A (ja) 1983-07-23 1983-07-23 光学的検出装置

Publications (2)

Publication Number Publication Date
JPS6027882A JPS6027882A (ja) 1985-02-12
JPH0311673B2 true JPH0311673B2 (en, 2012) 1991-02-18

Family

ID=15139796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58134927A Granted JPS6027882A (ja) 1983-07-23 1983-07-23 光学的検出装置

Country Status (3)

Country Link
US (1) US4585940A (en, 2012)
JP (1) JPS6027882A (en, 2012)
KR (1) KR900000689B1 (en, 2012)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61198089A (ja) * 1985-02-28 1986-09-02 Hokuyo Automatic Co 光電スイツチの検波回路
JPH068864B2 (ja) * 1985-02-28 1994-02-02 富士電機株式会社 光電スイッチ
JPS61198084A (ja) * 1985-02-28 1986-09-02 Hokuyo Automatic Co 光電スイツチ
JPS61198093A (ja) * 1985-02-28 1986-09-02 Hokuyo Automatic Co 光電スイツチ
JPS6487U (en, 2012) * 1987-06-18 1989-01-05
EP1337704B1 (en) 2000-08-08 2008-05-14 Lg Electronics Inc. Method and device for display use of washing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842257A (en) * 1972-05-05 1974-10-15 Lingl H Anlagenau Und Verfahre Alternating light barrier
JPS5282066A (en) * 1975-12-27 1977-07-08 Omron Tateisi Electronics Co Circuit for photoelectric switch
US4059762A (en) * 1976-05-17 1977-11-22 Beckman Instruments, Inc. Method and apparatus for determining accuracy of radiation measurements made in the presence of background radiation
JPS5770477A (en) * 1980-10-22 1982-04-30 Koito Ind Co Ltd Photoelectric type object detector
US4434363A (en) * 1981-05-11 1984-02-28 Matsushita Electric Works, Ltd. Photoelectric switching apparatus

Also Published As

Publication number Publication date
JPS6027882A (ja) 1985-02-12
US4585940A (en) 1986-04-29
KR900000689B1 (ko) 1990-02-03
KR850001428A (ko) 1985-03-18

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