JPS5750610A - Signal detector - Google Patents

Signal detector

Info

Publication number
JPS5750610A
JPS5750610A JP12682480A JP12682480A JPS5750610A JP S5750610 A JPS5750610 A JP S5750610A JP 12682480 A JP12682480 A JP 12682480A JP 12682480 A JP12682480 A JP 12682480A JP S5750610 A JPS5750610 A JP S5750610A
Authority
JP
Japan
Prior art keywords
fiber
grooves
transmitted
optical axis
light
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
JP12682480A
Other languages
Japanese (ja)
Other versions
JPS6258446B2 (en
Inventor
Mitsuki Sagane
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP12682480A priority Critical patent/JPS5750610A/en
Publication of JPS5750610A publication Critical patent/JPS5750610A/en
Publication of JPS6258446B2 publication Critical patent/JPS6258446B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To prevent noise and to facilitate the adjustment of optical axis by providing grooves along the optical axis to a pair of opposing supporting members, fixing an optical transmission fiber and a photodetection fiber in the grooves and detecting the change in the quantity of the light transmitted therein. CONSTITUTION:Grooves 16, 17 are formed along the optical axis to supporting members 12, 13 projecting from a base plate 10 consisting of plastics, and the bottom surfaces 161, 171 of the grooves are formed into a V shape. A fiber 18 for optical transmission and a fiber 21 for photodetection are fixed in the V-grooves 161, 171. The light from a light emitting element 25 is transmitted by the fiber 18, emits from an optical transmission surface 183, is made incident to the photodetection surface 211 of the fiber 21 and is transmitted to a photodetector 26. The signal corresponding to the change in the quantity of light when a member 9 to be detected shuts off the optical path is transmitted from the photodetector 26 to an input circuit 8. Thereby, noise is prevented and the adjustment of the optical axis is facilitated.
JP12682480A 1980-09-12 1980-09-12 Signal detector Granted JPS5750610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12682480A JPS5750610A (en) 1980-09-12 1980-09-12 Signal detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12682480A JPS5750610A (en) 1980-09-12 1980-09-12 Signal detector

Publications (2)

Publication Number Publication Date
JPS5750610A true JPS5750610A (en) 1982-03-25
JPS6258446B2 JPS6258446B2 (en) 1987-12-05

Family

ID=14944836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12682480A Granted JPS5750610A (en) 1980-09-12 1980-09-12 Signal detector

Country Status (1)

Country Link
JP (1) JPS5750610A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62117515U (en) * 1986-01-18 1987-07-25
CN112059914A (en) * 2020-09-21 2020-12-11 华海清科股份有限公司 Slip sheet detection device and chemical mechanical polishing system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62117515U (en) * 1986-01-18 1987-07-25
CN112059914A (en) * 2020-09-21 2020-12-11 华海清科股份有限公司 Slip sheet detection device and chemical mechanical polishing system

Also Published As

Publication number Publication date
JPS6258446B2 (en) 1987-12-05

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