Coherent gradient sensing method and system for measuring surface curvature
US6031611A · kind A · utility
57Cited by
2References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 4, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/2441
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for determining a curvature of a specularly reflective surface based on optical interference. Two optical gratings are used to produce a spatial displacement in an interference field of two different diffraction components produced by one grating from different diffraction components produced by another grating. Thus, the curvature of the surface can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.