Anamorphic illuminating optical system

Details Anamorphic illuminating optical system Anamorphic illuminating optical system

1992-12-07

1993-11-09

Arnold, Bruce Y.

Optical: systems and elements

Lens

Anamorphic

359710, 359742, G02B 1308

Patent

active

052608310

ABSTRACT:
An illuminating optical system for use in a microfilm reader/printer or the like for illuminating a film comprises an axially symmetric lens system and an anamorphic lens system. The anamorphic lens system includes a condenser lens opposed to a light source. A microfilm reader/printer having such an illuminating optical system causes the axially symmetric lens system to illuminate the microfilm during a reading operation, and the anamorphic lens system to illuminate the film during a printing operation.

REFERENCES:
patent: 2720813 (1953-10-01), Cox
patent: 4278334 (1981-07-01), Maeda
patent: 4756583 (1988-07-01), Morimoto
patent: 4825243 (1989-04-01), Ito et al.
patent: 5046838 (1991-09-01), Iwasaki

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