Scanning device for radiation beams

Details Scanning device for radiation beams Scanning device for radiation beams

1977-01-06

1978-10-24

Corbin, John K.

350285, G02B 2717

Patent

active

041218833

ABSTRACT:
A scanning device for light beams, wherein, for the purpose of permitting positional displacement of a scanning light beam to a certain extent in the direction perpendicular to its scanning direction, which is possibly caused by tilting or inclination of the reflection surfaces of scanning means such as a polygonal mirror, there is disposed a tolerating optical system in the light path of the light beam from the above-mentioned reflection surfaces. The positioned displacement of this light beam caused by tilting of the reflection surfaces of the light beam scanning means can be tolerated by a positional displacement tolerating optical system, wherein the focal length in the direction perpendicular to the scanning direction of the light beam is shortened in comparison with the focal length in the scanning direction of this tolerating optical system.

REFERENCES:
patent: 2810323 (1957-10-01), Coleman
patent: 2821111 (1958-01-01), Coleman
patent: 3750189 (1973-07-01), Fleischer
patent: 3870394 (1975-03-01), Ploeckl
patent: 3877777 (1975-04-01), Glenn, Jr.

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