JPS57111405A - Distance measuring device - Google Patents

Distance measuring device

Info

Publication number
JPS57111405A
JPS57111405A JP18633080A JP18633080A JPS57111405A JP S57111405 A JPS57111405 A JP S57111405A JP 18633080 A JP18633080 A JP 18633080A JP 18633080 A JP18633080 A JP 18633080A JP S57111405 A JPS57111405 A JP S57111405A
Authority
JP
Japan
Prior art keywords
light emitting
volume
elements
distance
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.)
Pending
Application number
JP18633080A
Other languages
Japanese (ja)
Inventor
Takashi Amikura
Makoto Fujiki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP18633080A priority Critical patent/JPS57111405A/en
Publication of JPS57111405A publication Critical patent/JPS57111405A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Optical Distance (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To eliminate a mobile part and to increase the durability of a distance measuring device, by providing plural light emitting elements to an optical system of the light emitting side to make these elements blink successively, receiving the reflected light from an object to be measured at a photodetector and then measuring the distance by the volume of the reflected light. CONSTITUTION:Light emitting elements 10a-10c are successively made blink for a light emitting system L1, and the light beams of these elements which are reflected from an object 3 to be measured are received at a photodetector 11. Then the volume of the received beam to each volume of the reflected light is converted into the electrical quantity like the voltage, etc., and these electrical quantities are compared with each other. In such way, the measurement of distance is carried out.
JP18633080A 1980-12-28 1980-12-28 Distance measuring device Pending JPS57111405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18633080A JPS57111405A (en) 1980-12-28 1980-12-28 Distance measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18633080A JPS57111405A (en) 1980-12-28 1980-12-28 Distance measuring device

Publications (1)

Publication Number Publication Date
JPS57111405A true JPS57111405A (en) 1982-07-10

Family

ID=16186451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18633080A Pending JPS57111405A (en) 1980-12-28 1980-12-28 Distance measuring device

Country Status (1)

Country Link
JP (1) JPS57111405A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114409A (en) * 1982-12-20 1984-07-02 Mitsubishi Electric Corp Optical distance measuring apparatus
US4740806A (en) * 1986-03-26 1988-04-26 Chinon Kabushiki Kaisha Range finding device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114409A (en) * 1982-12-20 1984-07-02 Mitsubishi Electric Corp Optical distance measuring apparatus
JPS6318122B2 (en) * 1982-12-20 1988-04-16 Mitsubishi Electric Corp
US4740806A (en) * 1986-03-26 1988-04-26 Chinon Kabushiki Kaisha Range finding device

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