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FR2402886A1 - Dispositif pour ecrans destines a produire une figure de moire - Google Patents

Dispositif pour ecrans destines a produire une figure de moire

Info

Publication number
FR2402886A1
FR2402886A1 FR7825958A FR7825958A FR2402886A1 FR 2402886 A1 FR2402886 A1 FR 2402886A1 FR 7825958 A FR7825958 A FR 7825958A FR 7825958 A FR7825958 A FR 7825958A FR 2402886 A1 FR2402886 A1 FR 2402886A1
Authority
FR
France
Prior art keywords
screens
produce
intended
longitudinal elements
moire
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
FR7825958A
Other languages
English (en)
Other versions
FR2402886B1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2402886A1 publication Critical patent/FR2402886A1/fr
Application granted granted Critical
Publication of FR2402886B1 publication Critical patent/FR2402886B1/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
    • G01D5/32—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 with attenuation or whole or partial obturation of beams of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/60—Systems using moiré fringes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Image Generation (AREA)
  • Toys (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Viewfinders (AREA)

Abstract

a. Dispositif pour écrans destinés à produire une figure de moiré, dans lequel chaque écran comprend un certain nombre d'éléments longitudinaux opaques séparés par des intervalles transparents. b. Dispositif caractérisé en ce que chacune des sections transversales des éléments longitudinaux est formée de telle manière que la lumière provenant de l'arrière des écrans, lorsqu'on se trouve dans la position de l'observateur, pour se propager vers l'avant de ces écrans, ne puisse se réfléchir sur les éléments longitudinaux dans une direction visible par l'observateur lorsque celui-ci se trouve, par rapport au dispositif dans un secteur angulaire pour lequel ce dispositif est destiné à fonctionner. c. L'invention s'applique dans le domaine des appareils de mesure optiques.
FR7825958A 1977-09-09 1978-09-08 Dispositif pour ecrans destines a produire une figure de moire Granted FR2402886A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7710139A SE408734B (sv) 1977-09-09 1977-09-09 Anordning vid raster avsedda att ge upphov till ett moiremonster

Publications (2)

Publication Number Publication Date
FR2402886A1 true FR2402886A1 (fr) 1979-04-06
FR2402886B1 FR2402886B1 (fr) 1983-09-23

Family

ID=20332224

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825958A Granted FR2402886A1 (fr) 1977-09-09 1978-09-08 Dispositif pour ecrans destines a produire une figure de moire

Country Status (15)

Country Link
US (1) US4242000A (fr)
JP (1) JPS5493400A (fr)
AR (1) AR218683A1 (fr)
AU (1) AU522933B2 (fr)
BR (1) BR7805904A (fr)
CA (1) CA1109304A (fr)
DE (1) DE2838509A1 (fr)
DK (1) DK147953C (fr)
ES (1) ES473587A1 (fr)
FI (1) FI67630C (fr)
FR (1) FR2402886A1 (fr)
GB (1) GB2004085B (fr)
NO (1) NO148973C (fr)
SE (1) SE408734B (fr)
SU (1) SU1376951A3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE422117B (sv) * 1980-09-22 1982-02-15 Bergkvist Lars A Anordning for utmerkande av enslinjer
GB2253902B (en) * 1984-02-18 1993-03-24 Ferranti Plc Detector apparatus for detecting coherent monochromatic point-source radiation
DE3527996C2 (de) * 1985-08-03 1994-06-23 Mankau Dieter Ski mit Ausgleichselementen
JP2533835B2 (ja) * 1986-03-07 1996-09-11 大日本印刷株式会社 ホログラム
GB8615197D0 (en) * 1986-06-21 1986-07-23 Renishaw Plc Opto-electronic scale reading apparatus
GB2252175B (en) * 1991-01-22 1994-03-30 British Aerospace A parallax barrier assembly and apparatus
US8493669B2 (en) * 2008-05-30 2013-07-23 The Invention Science Fund I Llc Focusing and sensing apparatus, methods, and systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1183915A (en) * 1967-08-10 1970-03-11 Vinootschap Onde Ingenieurs Bu Position Indicating Instrument
FR2024448A1 (fr) * 1968-11-28 1970-08-28 Kronnie & Volkers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162711A (en) * 1961-05-05 1964-12-22 Bausch & Lomb Moire fringe constructions including a repeating irregular pattern
US3217590A (en) * 1962-05-14 1965-11-16 American Design Engineering Co Apparatus for producing moire patterns for use in determining the relative position of a pair of elements

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1183915A (en) * 1967-08-10 1970-03-11 Vinootschap Onde Ingenieurs Bu Position Indicating Instrument
FR2024448A1 (fr) * 1968-11-28 1970-08-28 Kronnie & Volkers

Also Published As

Publication number Publication date
FI67630C (fi) 1985-04-10
DE2838509A1 (de) 1979-03-22
NO148973B (no) 1983-10-10
US4242000A (en) 1980-12-30
GB2004085B (en) 1982-03-10
FI782749A (fi) 1979-03-10
JPS619613B2 (fr) 1986-03-25
SE408734B (sv) 1979-07-02
NO783063L (no) 1979-03-12
NO148973C (no) 1984-01-18
AU522933B2 (en) 1982-07-01
AR218683A1 (es) 1980-06-30
SU1376951A3 (ru) 1988-02-23
BR7805904A (pt) 1979-04-24
JPS5493400A (en) 1979-07-24
GB2004085A (en) 1979-03-21
FI67630B (fi) 1984-12-31
DK379678A (da) 1979-03-10
FR2402886B1 (fr) 1983-09-23
AU3969678A (en) 1980-03-13
DK147953C (da) 1985-07-01
SE7710139L (sv) 1979-03-10
DK147953B (da) 1985-01-14
CA1109304A (fr) 1981-09-22
ES473587A1 (es) 1979-04-01

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Legal Events

Date Code Title Description
ST Notification of lapse