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 axisInfo
- 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
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)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Length Measuring Devices By Optical Means (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.
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)
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 |
-
1974
- 1974-04-04 FR FR7412045A patent/FR2266899A1/en active Granted
-
1975
- 1975-01-22 CH CH75575A patent/CH582891A5/xx not_active IP Right Cessation
- 1975-04-04 DE DE19752514671 patent/DE2514671A1/en active Pending
Cited By (1)
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 |
---|---|
DE2514671A1 (en) | 1975-10-23 |
CH582891A5 (en) | 1976-12-15 |
FR2266899B1 (en) | 1976-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BE833604A (en) | REFLEX LIGHT REFLECTIVE SHEET | |
DK137101B (en) | Optoelectronic arrangement for fuel plane detection. | |
BR7500611A (en) | APPARATUS FOR TRANSPORTING A RADIOACTIVE FUEL SET | |
CA1033472A (en) | Method for developing resist films | |
JPS51140465A (en) | Compensating lens | |
NL7507546A (en) | DEVELOPMENT EQUIPMENT FOR PHOTOGRAPHIC FILMS. | |
FR2266899A1 (en) | Parallel strip grid for light pattern projection - projected on plane inclined at other than ninety deg. to optical axis | |
NO774224L (en) | TRAILING PLATE FOR A LENS OR SIMILAR | |
GB1306822A (en) | Method and apparatus for holding patterns in reproducing means | |
IT1030203B (en) | GROUP D IMAGE OF AN X-RAY MACHINE WITH SHEET FILM CHANGE DEVICE | |
JPS52143847A (en) | Optical lens | |
JPS5213344A (en) | Thermal drawing film for projection | |
JPS5339146A (en) | Lens system | |
FR2226699A1 (en) | Clock dial projected onto viewing screen - two sets of numbers, one set on mirror | |
ES441797A1 (en) | Multiple function recording and readout system | |
ATA398475A (en) | PROJECTION LENS | |
AT347245B (en) | MULTIPLE SPELLING COUPLING FOR CINEMA PROJECTORS | |
SU595183A1 (en) | Method of photocomposition | |
JPS5225624A (en) | Camera for the offset photoengraving process | |
JPS5240925A (en) | Information output equipment | |
JPS52139365A (en) | Measuring method for film thickness of vapor grown films in semiconductor wafers | |
JPS5260141A (en) | Manufacture of electrophotographic light sensitive plate | |
JPS52110683A (en) | Measuring method and apparatus for initial reaction velocity | |
NL7501692A (en) | ANTISTATIC PHOTOGRAPHIC FILM. | |
JPS5227630A (en) | Method for producing photographic light sensitive material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
GC | Lien (pledge) constituted | ||
TP | Transmission of property | ||
ST | Notification of lapse |