Projection lens assembly

Details Projection lens assembly Projection lens assembly

2007-01-23

2007-01-23

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With field curvature shaping

C359S663000

Reexamination Certificate

active

11193948

ABSTRACT:
A projection lens assembly is provided that includes first, second, third, fourth, fifth, and sixth lenses. The second, third, fifth, and sixth lenses of the projection lens assembly form a double gauss-type lens assembly. The first lens is configured to provide telecentricity and the fourth lens in configured to correct aberrations due to variations in the third lens.

REFERENCES:
patent: 5062692 (1991-11-01), Marui et al.
patent: 5870228 (1999-02-01), Kreitzer et al.
patent: 5975703 (1999-11-01), Holman et al.
patent: 6046860 (2000-04-01), Hirata
patent: 6317171 (2001-11-01), Dewald

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