GB1523095A - Method for the optical measurement of distances - Google Patents
Method for the optical measurement of distancesInfo
- Publication number
- GB1523095A GB1523095A GB1870877A GB1870877A GB1523095A GB 1523095 A GB1523095 A GB 1523095A GB 1870877 A GB1870877 A GB 1870877A GB 1870877 A GB1870877 A GB 1870877A GB 1523095 A GB1523095 A GB 1523095A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- lines
- width
- numbers
- moments
- 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
Links
Classifications
-
- 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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
1523095 Measuring dimensions COMMISSARIAT A L'ENERGIE ATOMIQUE 4 May 1977 [7 May 1976] 18708/77 Heading G1A To determine the width of an object, an image of it is formed by a microscope, and the image is scanned by a camera so as to form a visual display on a screen; two parallel lines are superimposed on the screen and are moved until they coincide with opposite edges of the displayed object. The circuitry for generating and moving the lines also produces numbers representing their position, and these numbers are used to compute the line separation, and hence the object width. If desired, each line may be replaced by a pair of lines separated by the permissible tolerance on the width of the object, so that the operator can see if the object is within desired limits or not. Various ways of processing the number associated with the lines are disclosed; for example the number for each line can be entered into a respective counter, each counter then being counted down to zero and the time between the moments that the counters reach zero represents separation, Fig. 2 (not shown). Alternatively, each number may be stored and compared with an increasing count, the difference in time between the moments at which that count equals the numbers being representative of the separations, Fig. 3 (not shown). Suitable time measuring circuitry is given, Fig. 4 (not shown), as well as a four line embodiment for tolerance display, Fig. 5 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7613793A FR2350580A1 (en) | 1976-05-07 | 1976-05-07 | OPTICAL DISTANCE MEASUREMENT PROCESS, AND OPTICAL MEASURING DEVICE BY APPLYING |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1523095A true GB1523095A (en) | 1978-08-31 |
Family
ID=9172846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1870877A Expired GB1523095A (en) | 1976-05-07 | 1977-05-04 | Method for the optical measurement of distances |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS52136650A (en) |
FR (1) | FR2350580A1 (en) |
GB (1) | GB1523095A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH655570B (en) * | 1982-03-09 | 1986-04-30 | ||
GB2179155B (en) * | 1985-08-13 | 1989-08-16 | English Electric Valve Co Ltd | Spatial characteristic determination |
FR2619917A1 (en) * | 1987-08-31 | 1989-03-03 | Armines | Method and apparatus for measuring the principal dimensions of an impression formed in the surface of an article |
-
1976
- 1976-05-07 FR FR7613793A patent/FR2350580A1/en not_active Withdrawn
-
1977
- 1977-05-04 GB GB1870877A patent/GB1523095A/en not_active Expired
- 1977-05-07 JP JP5253877A patent/JPS52136650A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS52136650A (en) | 1977-11-15 |
FR2350580A1 (en) | 1977-12-02 |
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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 |