Method and apparatus for generating small angles
US4909625A · kind A · utility
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2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Jul 5, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for generating small angles for calibrating autocomators or the like is described. It includes a small angle wedge which is rigidly attached to a mechanical beam which is rotatable about a pivot point. The rotation of wedge causes a very small deviation in the line of sight of an autocollimator under test after passing through the wedge and thus gives a large optical advantage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.