Moving mirror tilt adjust mechanism in an interferometer
US4991961A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | May 26, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/4535
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interferometer modulator (10) has a housing (12) that encloses a moving mirror (14) attached to a mirror arm (18) which is suspended by links (34, 36) from the housing (12). The links (34, 36) are attached to the mirror arm (18) at swinging pivots (42, 44) and are attached to the housing (12) at fixed pivots (46, 48). One of the fixed pivots (46) is mounted within an adjustable block (68) the position of which may be adjusted by the turning of adjust screws (82, 76). Turning of one of the adjust screws (82) adjusts the distance between the fixed pivots (46, 48) to match the distance of the swinging pivots (42, 44), thus correcting for vertical tilt. Turning of the second of the adjust screws (76) compensates for any angular differences that would prevent the links (34, 36) from moving in the same plane of motion, thus correcting for horizontal tilt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.