[go: up one dir, main page]

JPS5618707A - Method and device for optically measuring shape - Google Patents

Method and device for optically measuring shape

Info

Publication number
JPS5618707A
JPS5618707A JP9367879A JP9367879A JPS5618707A JP S5618707 A JPS5618707 A JP S5618707A JP 9367879 A JP9367879 A JP 9367879A JP 9367879 A JP9367879 A JP 9367879A JP S5618707 A JPS5618707 A JP S5618707A
Authority
JP
Japan
Prior art keywords
measured
point
distance
light
measuring section
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
JP9367879A
Other languages
Japanese (ja)
Inventor
Yoichi Kawada
Keiji Toyomi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9367879A priority Critical patent/JPS5618707A/en
Publication of JPS5618707A publication Critical patent/JPS5618707A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)

Abstract

PURPOSE: To measure the absolute numerical shape of a body without contacting it, by parallel shifting a position of light projection to a body to be measured and using the amount of the shift and the angle of the projection to calculate the distance between the point of installation of the body and its measured section.
CONSTITUTION: The light reception surface 22 of a light receiver 19 is located at a prescribed distance Lz0 from the point 0 of installation of the body to be measured. A displacement measuring base point R is set on a reference line 10 rectangular to a straight line extending between the point 0 and the center Sa of the light reception surface 22. The body to be measured 1 is then placed at the point 0 so that the measuring section P1 of the body is located directly in front of the center SA of the surface 22. Laser light is projected at a prescribed angle of α toward the surface of the body to be measured 1 from a reflecting mirror 13 on the reference line 10. When an image is formed on the center SA of the surface 22 by the light 27 reflected from the measuring section P1, a displacement Xr1 from the measuring base point R is detected. The distance lz1 between the measuring section P1 and the surface 22 is calculated from the displacement and the projection angle of α. The calculated value is subtracted from the distance Lz0 to determine the distance r1 between the point 0 and the measuring section P1. The distance xr1 represents the specific shape of the body to be measured.
COPYRIGHT: (C)1981,JPO&Japio
JP9367879A 1979-07-25 1979-07-25 Method and device for optically measuring shape Pending JPS5618707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9367879A JPS5618707A (en) 1979-07-25 1979-07-25 Method and device for optically measuring shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9367879A JPS5618707A (en) 1979-07-25 1979-07-25 Method and device for optically measuring shape

Publications (1)

Publication Number Publication Date
JPS5618707A true JPS5618707A (en) 1981-02-21

Family

ID=14089061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9367879A Pending JPS5618707A (en) 1979-07-25 1979-07-25 Method and device for optically measuring shape

Country Status (1)

Country Link
JP (1) JPS5618707A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6080704A (en) * 1983-10-11 1985-05-08 Mitsutoyo Mfg Co Ltd Machine for measuring three-dimensional object
US4879664A (en) * 1985-05-23 1989-11-07 Kabushiki Kaisha Toshiba Three-dimensional position sensor and three-dimensional position setting system
WO1990007690A1 (en) * 1985-05-23 1990-07-12 Toshimitsu Suyama Sensor and system for setting three-dimensional position
EP1102087A2 (en) 1999-11-18 2001-05-23 Japan Atomic Energy Research Institute Baseline length variable surface geometry measuring apparatus and range finder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6080704A (en) * 1983-10-11 1985-05-08 Mitsutoyo Mfg Co Ltd Machine for measuring three-dimensional object
US4879664A (en) * 1985-05-23 1989-11-07 Kabushiki Kaisha Toshiba Three-dimensional position sensor and three-dimensional position setting system
WO1990007690A1 (en) * 1985-05-23 1990-07-12 Toshimitsu Suyama Sensor and system for setting three-dimensional position
EP1102087A2 (en) 1999-11-18 2001-05-23 Japan Atomic Energy Research Institute Baseline length variable surface geometry measuring apparatus and range finder
EP1102087B1 (en) * 1999-11-18 2012-05-09 Japan Atomic Energy Agency Baseline length variable surface geometry measuring apparatus and range finder

Similar Documents

Publication Publication Date Title
JPS54126023A (en) Optical device
SE8502977D0 (en) INSTRUMENTS FOR SEATING SURFACE TOPOGRAPHY
EP0911001A3 (en) Apparatus for measuring an optical characteristic parameter
JPS5540959A (en) Distance measuring unit
JPS56168104A (en) Detector for mark position
JPS5618707A (en) Method and device for optically measuring shape
JPS55146046A (en) Measuring method of golf ball spin amount
JPS5316652A (en) Thickness measuring apparatus of plate form objects
JPS5438159A (en) Distance measurement apparatus
JPS5533679A (en) Measuring method of distance
JPS5337457A (en) Distance measuring device
JPS6461601A (en) Detecting device for lens displacement quantity
JPS5585208A (en) Measurement of inner diameter
JPS57163851A (en) Optical fiber
JPS54114261A (en) Measuring apparatus of surface undulations
JPS6413420A (en) Liquid level measuring instrument
JPS5599045A (en) Surface reflection measuring apparatus
JPS57192806A (en) Method for measuring minute displacement
JPS5337455A (en) Distance measuring device
JPS5337454A (en) Distance measuring device
JPS52119251A (en) Position detector for objects being measured
JPS5257843A (en) Measuring device for thickness of film
JPS5757004A (en) Reflective antenna
JPS557669A (en) Position detection system
JPS5387256A (en) Position detector