Fabricating interferometers having reduced misalignment problems

Details Fabricating interferometers having reduced misalignment problems Fabricating interferometers having reduced misalignment problems

1990-01-30

1991-03-26

Turner, Samuel

Optics: measuring and testing

By particle light scattering

With photocell detection

G01B 902

Patent

active

050023942

ABSTRACT:
An interferometer structure is disclosed in which alignment problems are reduced by providing a special retaining structure for the transparent beamsplitter plates. In order to minimize distortion of the beamsplitter plates, the metal housing surfaces, against which they are held, are each coated with a material which has a very slippery and extremely flat surface engaging the surface of the respective beamsplitter plate. The preferred coating material is polytetrafluoroethylene. A glass tool (optically flat) is used during heating (and hardening) of the coating material, for the purpose of insuring an unusually flat coating surface.

REFERENCES:
patent: 3936193 (1976-02-01), Auth
patent: 4671656 (1987-06-01), Auth
patent: 4810092 (1989-03-01), Auth
patent: 4844614 (1989-07-01), Henderson et al.

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