JPS57198804A - Distance measuring apparatus - Google Patents

Distance measuring apparatus

Info

Publication number
JPS57198804A
JPS57198804A JP8257281A JP8257281A JPS57198804A JP S57198804 A JPS57198804 A JP S57198804A JP 8257281 A JP8257281 A JP 8257281A JP 8257281 A JP8257281 A JP 8257281A JP S57198804 A JPS57198804 A JP S57198804A
Authority
JP
Japan
Prior art keywords
distance
mirror
concave mirror
camera
reflected 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
JP8257281A
Other languages
Japanese (ja)
Inventor
Kinichi Tamura
Hiroshi Kuriyama
Hidetaka Nakao
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP8257281A priority Critical patent/JPS57198804A/en
Publication of JPS57198804A publication Critical patent/JPS57198804A/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
    • G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

PURPOSE:To achieve a highly accurate measurement of distance by switching the surface to a flat mirror or a concave mirror to receive a reflected light from an object according to the range of distance and the accuracy with reflector provided rotatably in a structure of integrating the flat mirror and the concave mirror. CONSTITUTION:A spot light or a slit light is irradiated on an object along the optical path of the optical system in a TV camera 2 for obtaining pattern information thereof and reflected light from the object enters the TV camera 2 by way of reflectors 5 and 8 arranged on the optical axis and at a position separated from the optical axis. The distance to the object is measured from the direction and the value of diviation of a spot image or a slit image from the reference positions within the picture of the TV camera 2. The reflector 8 in which a flat mirror 6 and a concave mirror 7 are integrated is so arranged rotatably as to switch the surface to the flat mirror 6 and the concave mirror 7 to receive reflected light from the objective whereby the range and accuracy can be altered in measuring distance.
JP8257281A 1981-06-01 1981-06-01 Distance measuring apparatus Pending JPS57198804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8257281A JPS57198804A (en) 1981-06-01 1981-06-01 Distance measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8257281A JPS57198804A (en) 1981-06-01 1981-06-01 Distance measuring apparatus

Publications (1)

Publication Number Publication Date
JPS57198804A true JPS57198804A (en) 1982-12-06

Family

ID=13778194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8257281A Pending JPS57198804A (en) 1981-06-01 1981-06-01 Distance measuring apparatus

Country Status (1)

Country Link
JP (1) JPS57198804A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6611318B2 (en) * 2001-03-23 2003-08-26 Automatic Timing & Controls, Inc. Adjustable mirror for collimated beam laser sensor
US7059529B1 (en) * 1998-09-14 2006-06-13 Datalogic Spa Device for reading a barcode
CN113124820A (en) * 2021-06-17 2021-07-16 中国空气动力研究与发展中心低速空气动力研究所 Monocular distance measurement method based on curved mirror

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7059529B1 (en) * 1998-09-14 2006-06-13 Datalogic Spa Device for reading a barcode
US7556201B2 (en) 1998-09-14 2009-07-07 Datalogic S.P.A. Device for reading a barcode
US6611318B2 (en) * 2001-03-23 2003-08-26 Automatic Timing & Controls, Inc. Adjustable mirror for collimated beam laser sensor
CN113124820A (en) * 2021-06-17 2021-07-16 中国空气动力研究与发展中心低速空气动力研究所 Monocular distance measurement method based on curved mirror

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