GB1308669A - Optical measurement apparatus - Google Patents

Optical measurement apparatus

Info

Publication number
GB1308669A
GB1308669A GB5616470A GB5616470A GB1308669A GB 1308669 A GB1308669 A GB 1308669A GB 5616470 A GB5616470 A GB 5616470A GB 5616470 A GB5616470 A GB 5616470A GB 1308669 A GB1308669 A GB 1308669A
Authority
GB
United Kingdom
Prior art keywords
focal point
lens
oscillated
distance
photo
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.)
Expired
Application number
GB5616470A
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1308669A publication Critical patent/GB1308669A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/33—Acousto-optical deflection devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

1308669 Photo-electric measurement THOMSON C S F 25 Nov 1970 [2 Dec 1969] 56164/70 Heading G1A In an arrangement for measuring the distance between a plane 5, Fig. 3, and a reference point, the focal point of a light beam focused by a lens 4 is oscillated between points F 1 and F 2 on the axis of the beam and the signal developed by photo detector 8 in response to the passage through a slit 7 of light reflected by the surface is fed to a synchronous detector 10 together with a signal from a generator 11 which controls the movement of the focal point, the output of the synchronous detector being a measure of distance. The focal point may be oscillated by a piezo electric crystal, or by a fluid lens in which a standing wave is created by an acoustic transducer, or a system lens may be moved axially on a mechanical transducer.
GB5616470A 1969-12-02 1970-11-25 Optical measurement apparatus Expired GB1308669A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6941522A FR2073246A1 (en) 1969-12-02 1969-12-02

Publications (1)

Publication Number Publication Date
GB1308669A true GB1308669A (en) 1973-02-21

Family

ID=9043947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5616470A Expired GB1308669A (en) 1969-12-02 1970-11-25 Optical measurement apparatus

Country Status (6)

Country Link
BE (1) BE758087A (en)
DE (1) DE2058597B2 (en)
FR (1) FR2073246A1 (en)
GB (1) GB1308669A (en)
LU (1) LU62116A1 (en)
NL (1) NL7017209A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908757C2 (en) * 1979-03-06 1986-10-16 Baumgartner, Viktor, 8028 Taufkirchen Distance change measuring arrangement
DE4025577C2 (en) * 1990-08-11 1999-09-09 Fraunhofer Ges Forschung Device for the contactless measurement of the distance from an object

Also Published As

Publication number Publication date
DE2058597B2 (en) 1972-12-07
BE758087A (en) 1971-04-01
DE2058597A1 (en) 1971-06-09
NL7017209A (en) 1971-06-04
LU62116A1 (en) 1971-05-11
FR2073246A1 (en) 1971-10-01

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed