FR2266899A1 - Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis - Google Patents

Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis

Info

Publication number
FR2266899A1
FR2266899A1 FR7412045A FR7412045A FR2266899A1 FR 2266899 A1 FR2266899 A1 FR 2266899A1 FR 7412045 A FR7412045 A FR 7412045A FR 7412045 A FR7412045 A FR 7412045A FR 2266899 A1 FR2266899 A1 FR 2266899A1
Authority
FR
France
Prior art keywords
reference plane
grid
light pattern
projected
optical axis
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
FR7412045A
Other languages
French (fr)
Other versions
FR2266899B1 (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.)
Compagnie Electro Mecanique SA
Original Assignee
Compagnie Electro Mecanique 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 Compagnie Electro Mecanique SA filed Critical Compagnie Electro Mecanique SA
Priority to FR7412045A priority Critical patent/FR2266899A1/en
Priority to CH75575A priority patent/CH582891A5/xx
Priority to DE19752514671 priority patent/DE2514671A1/en
Publication of FR2266899A1 publication Critical patent/FR2266899A1/en
Application granted granted Critical
Publication of FR2266899B1 publication Critical patent/FR2266899B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Optics & Photonics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)

Abstract

The grid is used to project a light pattern onto a reference plane in order to produce a pattern of parallel equidistant strips. The lines of the grid are arranged aperiodically with a pseudo-period represented by a given recurrence formula. To manufacture the grid an image of a strip pattern in the reference plane is formed using the same optical system which will project the pattern into the reference plane, whereby the optical system and the reference plane are positioned in the same way as for projection. A photo plate or a film is positioned in a plane representing the optical conjugate of the reference plane relative to the optical system, and the plate or film is then developed.
FR7412045A 1974-04-04 1974-04-04 Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis Granted FR2266899A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7412045A FR2266899A1 (en) 1974-04-04 1974-04-04 Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis
CH75575A CH582891A5 (en) 1974-04-04 1975-01-22
DE19752514671 DE2514671A1 (en) 1974-04-04 1975-04-04 GRID FOR PROJECTING A LIGHT PATTERN ON A REFERENCE PLANE AND METHOD FOR CREATING SUCH A GRID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7412045A FR2266899A1 (en) 1974-04-04 1974-04-04 Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis

Publications (2)

Publication Number Publication Date
FR2266899A1 true FR2266899A1 (en) 1975-10-31
FR2266899B1 FR2266899B1 (en) 1976-10-08

Family

ID=9137321

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7412045A Granted FR2266899A1 (en) 1974-04-04 1974-04-04 Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis

Country Status (3)

Country Link
CH (1) CH582891A5 (en)
DE (1) DE2514671A1 (en)
FR (1) FR2266899A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357054A1 (en) 1976-06-29 1978-01-27 Rca Corp PROCESS FOR INSPECTING CATHODIC RAY TUBES, ESPECIALLY TELEVISION IMAGE TUBES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2357054A1 (en) 1976-06-29 1978-01-27 Rca Corp PROCESS FOR INSPECTING CATHODIC RAY TUBES, ESPECIALLY TELEVISION IMAGE TUBES

Also Published As

Publication number Publication date
CH582891A5 (en) 1976-12-15
FR2266899B1 (en) 1976-10-08
DE2514671A1 (en) 1975-10-23

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Legal Events

Date Code Title Description
TP Transmission of property
GC Lien (pledge) constituted
TP Transmission of property
ST Notification of lapse