JPS56111403A - Sensor for parallel luminous flux photodetection - Google Patents

Sensor for parallel luminous flux photodetection

Info

Publication number
JPS56111403A
JPS56111403A JP1521680A JP1521680A JPS56111403A JP S56111403 A JPS56111403 A JP S56111403A JP 1521680 A JP1521680 A JP 1521680A JP 1521680 A JP1521680 A JP 1521680A JP S56111403 A JPS56111403 A JP S56111403A
Authority
JP
Japan
Prior art keywords
luminous fluxes
parallel
sensor
measurement
parallel luminous
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.)
Pending
Application number
JP1521680A
Other languages
Japanese (ja)
Inventor
Takahiko Inari
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1521680A priority Critical patent/JPS56111403A/en
Publication of JPS56111403A publication Critical patent/JPS56111403A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness

Abstract

PURPOSE:To enable a measurement of the size of a body with high precision by photodetecting only luminous fluxes by arranging optical fiber having an optical system which photodetects only parallel luminous fluxes among luminous fluxes incident to the tip part. CONSTITUTION:The tip part of each optical fiber 4 has a small opening and is positioned at the focus position of each lens 5. Only luminous fluxes parallel to the optical axes of lenses 5 are led into optical fibers 4 and reach photoelectric detectors 6, where their light intensity is detected. Respective photoelectric detectors 6 are successively inspected by driving and signal detecting circuit 8 to detect the light intensity distribution of the incident luminous fluxes. When the size of body 1, for example, is measured by using such sensor 7, no measurement error occurs because only parallel luminous fluxes 9 and 9' are detected even if body 1 shifts in position to 1', so that the measurement will be taken with high precision.
JP1521680A 1980-02-08 1980-02-08 Sensor for parallel luminous flux photodetection Pending JPS56111403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1521680A JPS56111403A (en) 1980-02-08 1980-02-08 Sensor for parallel luminous flux photodetection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1521680A JPS56111403A (en) 1980-02-08 1980-02-08 Sensor for parallel luminous flux photodetection

Publications (1)

Publication Number Publication Date
JPS56111403A true JPS56111403A (en) 1981-09-03

Family

ID=11882672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1521680A Pending JPS56111403A (en) 1980-02-08 1980-02-08 Sensor for parallel luminous flux photodetection

Country Status (1)

Country Link
JP (1) JPS56111403A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576252A (en) * 1983-04-15 1986-03-18 Nifco Inc. Rotation damper
JPS6259810U (en) * 1985-10-02 1987-04-14
JPH03202705A (en) * 1989-12-29 1991-09-04 Kanegafuchi Chem Ind Co Ltd Size judging apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4576252A (en) * 1983-04-15 1986-03-18 Nifco Inc. Rotation damper
JPS6259810U (en) * 1985-10-02 1987-04-14
JPH03202705A (en) * 1989-12-29 1991-09-04 Kanegafuchi Chem Ind Co Ltd Size judging apparatus

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