Anamorphic F.theta. lens system

Details Anamorphic F.theta. lens system Anamorphic F.theta. lens system

1979-03-15

1981-07-07

Corbin, John K.

350420, G02B 1308, G02B 2717

Patent

active

042771285

ABSTRACT:
An anamorphic f.theta. lens system, with respect to a sweeping surface, has a pupil position positioned to coincide with a reflective surface of a rotating polyhedric mirror. Parallel incident light at an angle .theta. with respect to an optical axis is converges on a scanning surface at a position separated from the optical axis by a distance proportional to .theta.. In the divergent direction of the reflected light from the reflection surface, there is a conjugate relationship between the reflection surface and the scanning surface, where the reflection surface is an object surface, and the scanning surface is an image surface.

REFERENCES:
patent: 3946150 (1976-03-01), Grafton
patent: 3973833 (1976-08-01), Lawson
patent: 4121883 (1978-10-01), Goshima et al.
patent: 4123135 (1978-10-01), Rabedeau

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