FR2226644A1 - Optical measurement of displacement - uses electronic circuits eliminating lighting effects enabling use of stroboscopic lighting - Google Patents

Optical measurement of displacement - uses electronic circuits eliminating lighting effects enabling use of stroboscopic lighting

Info

Publication number
FR2226644A1
FR2226644A1 FR7314227A FR7314227A FR2226644A1 FR 2226644 A1 FR2226644 A1 FR 2226644A1 FR 7314227 A FR7314227 A FR 7314227A FR 7314227 A FR7314227 A FR 7314227A FR 2226644 A1 FR2226644 A1 FR 2226644A1
Authority
FR
France
Prior art keywords
displacement
lighting
target
electronic circuits
optical measurement
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.)
Granted
Application number
FR7314227A
Other languages
French (fr)
Other versions
FR2226644B1 (en
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.)
BARBIER BENARD TURENNE ANC ETS
Original Assignee
BARBIER BENARD TURENNE ANC ETS
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 BARBIER BENARD TURENNE ANC ETS filed Critical BARBIER BENARD TURENNE ANC ETS
Priority to FR7314227A priority Critical patent/FR2226644A1/en
Publication of FR2226644A1 publication Critical patent/FR2226644A1/en
Application granted granted Critical
Publication of FR2226644B1 publication Critical patent/FR2226644B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light

Abstract

The optical system of high sensitivity and wide pass band permits measurements at a distance of the displacement or vibration of a target having a line separating a clear area and a shaded area. A target (10) with a line (2) of demarcation between a clear area (4) and a shaded area (3) is viewed by the optical detector comprising a converging lens (6) placed in front of a diaphragm (7) in front of a truncated prism (8). Light rays from the target are reflected by the lateral faces (12 and 13) into photo sensitive cells (9 and 11). A third cell (14) receives light axially through the truncation of the prism. Electronic amplifier, gain control and demodulator circuits process the photocell outputs to produce a displacement signal independent of lighting variations.
FR7314227A 1973-04-18 1973-04-18 Optical measurement of displacement - uses electronic circuits eliminating lighting effects enabling use of stroboscopic lighting Granted FR2226644A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7314227A FR2226644A1 (en) 1973-04-18 1973-04-18 Optical measurement of displacement - uses electronic circuits eliminating lighting effects enabling use of stroboscopic lighting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7314227A FR2226644A1 (en) 1973-04-18 1973-04-18 Optical measurement of displacement - uses electronic circuits eliminating lighting effects enabling use of stroboscopic lighting

Publications (2)

Publication Number Publication Date
FR2226644A1 true FR2226644A1 (en) 1974-11-15
FR2226644B1 FR2226644B1 (en) 1979-03-02

Family

ID=9118210

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7314227A Granted FR2226644A1 (en) 1973-04-18 1973-04-18 Optical measurement of displacement - uses electronic circuits eliminating lighting effects enabling use of stroboscopic lighting

Country Status (1)

Country Link
FR (1) FR2226644A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063830A1 (en) * 1981-04-03 1982-11-03 Koninklijke Philips Electronics N.V. Device for detecting the position of an object

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063830A1 (en) * 1981-04-03 1982-11-03 Koninklijke Philips Electronics N.V. Device for detecting the position of an object

Also Published As

Publication number Publication date
FR2226644B1 (en) 1979-03-02

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse