Telecentric and achromatic f-theta scan lens system and method o

Details Telecentric and achromatic f-theta scan lens system and method o Telecentric and achromatic f-theta scan lens system and method o

1993-08-02

1995-04-04

Sugarman, Scott J.

Optical: systems and elements

Lens

High distortion lens

359663, 359755, G02B 1322, G02B 964

Patent

active

054042470

ABSTRACT:
An airspaced, diffraction limited, seven element telecentric f-theta lens having a first meniscus lens concave to the incident side; a first bi-concave lens; a second meniscus lens convex to the incident side; a third meniscus lens concave to the incident side; a pair of bi-convex lenses; and a second bi-concave lens is disclosed. The second, third and fourth as well as the sixth and seventh lens elements are edge contact spaced.

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patent: 4269478 (1981-05-01), Maeda et al.
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patent: 4863250 (1989-09-01), Ishizuka
patent: 4880299 (1989-11-01), Hamada
patent: 4925279 (1990-05-01), Shirota
patent: 5055663 (1991-10-01), Morimoto et al.
patent: 5087987 (1992-02-01), Simbal
patent: 5134523 (1992-07-01), Cobb
patent: 5168454 (1992-12-01), LaPlante et al.

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