Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1989-05-26
1991-02-12
Willis, David L.
Optics: measuring and testing
By particle light scattering
With photocell detection
G01J 345
Patent
active
049919610
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.
REFERENCES:
patent: 3936193 (1976-02-01), Auth
patent: 4383762 (1983-05-01), Burkert
patent: 4556316 (1985-12-01), Doyle
patent: 4693603 (1987-09-01), Auth
patent: 4710001 (1987-12-01), Lacey
patent: 4881814 (1989-11-01), Hoult
Koren Matthew W.
Nicolet Instrument Corporation
Willis David L.
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