Apparatus for measuring three-dimensional curved surface shapes
US5104227A · kind A · utility
24Cited by
2References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 20, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Mar 20, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/2522
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A three-dimensional curved surface shape measuring apparatus of the slit light rotating type. In accordance with a composite image .theta.(x', y') produced when a slit light is rotationally scanned with respect to a picture of an object to be measured and horizontal displacements x.sub.o and vertical displacement z.sub.o of an axis of rotation of the slit light with respect to an origin of a reference plane, a necessary computational processing is performed to determine a three-dimensional shape f(x, y) of the object surface which is free of distortion due to a perspective effect of a television camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.