Optical focussing-error detection system

Details Optical focussing-error detection system Optical focussing-error detection system

1980-01-04

1982-11-09

Rosenberger, R. A.

Optics: measuring and testing

Focal position of light source

350170, 350172, 350162R, 369 45, G01J 136

Patent

active

043582001

ABSTRACT:
A focussing error detection system is described for determining deviations between the plane of imaging of an objective system in an optical arrangement and the radiation-reflecting surface in said system. The apparatus comprises an optical element by means of which a radiation beam coming from the radiation reflecting surface is both rendered astigmatic and separated from a radiation beam which is directed to the radiation-reflecting surface. By the use of this element the number of components of the focussing-error detection system can be minimized and a compact construction of said system can be obtained.

REFERENCES:
patent: 2579177 (1951-12-01), Miles
patent: 2664024 (1953-12-01), Hansen
patent: 2896499 (1959-07-01), DeLang
patent: 3669673 (1972-06-01), Ih et al.
patent: 4011400 (1977-03-01), Simons et al.
patent: 4025949 (1977-05-01), Whitman
patent: 4123652 (1978-10-01), Bouwhuis
patent: 4163149 (1979-07-01), Sawano et al.
patent: 4196961 (1980-04-01), Walter et al.
patent: 4287413 (1981-09-01), Kanamaru

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