Noninterference optical error sensing system

Details Noninterference optical error sensing system Noninterference optical error sensing system

1983-03-16

1985-10-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250216, G01J 120

Patent

active

045476624

ABSTRACT:
A device for examining optical surfaces in an optical train for a laser employs radiation diffusely scattered from the surfaces as input to a noninterfering sampling system that can examine any optical surface in the total system from a single sampling position.

REFERENCES:
patent: 3804521 (1974-04-01), Sprague
patent: 3825845 (1974-07-01), Angelbeck et al.
patent: 4129775 (1978-12-01), O'Meara
patent: 4210400 (1980-07-01), Misek
patent: 4243877 (1981-01-01), Cruz
patent: 4295741 (1981-10-01), Palma et al.
patent: 4405232 (1983-09-01), Mansell

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