Reflecting mirror assembly for autocollimator
US4650298A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 10, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Apr 10, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflecting mirror assembly for an autocollimator comprises a partial reflecting mirror standing upright on a base and provided with an area for reflecting part of the rays of a light beam from the autocollimator and an area for transmitting the remaining rays of the light beam; a first reflecting mirror for deflecting the rays passing through the transmitting area substantially by 90.degree.; and a second reflecting mirror which always remains vertical irrespective of any inclination of the base and which reflects the rays reflected by the first reflecting mirror. The arrangement makes it possible to simultaneously view the pitching, yawing and rolling movements of a test object on the same screen of the autocollimator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.