Image lens array

Details Image lens array Image lens array

2007-08-28

2007-08-28

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

Single component with multiple elements

C359S713000, C359S714000, C359S715000, C359S716000, C359S753000

Reexamination Certificate

active

11253945

ABSTRACT:
An image lens array, from object side, comprises: a first positive meniscus plastic lens with a convex surface facing forward, a second negative meniscus plastic lens with a concave surface facing forward, a third positive meniscus plastic lens with a convex surface facing forward, and an infrared filter disposed in the lens barrel of the image lens array, the central thickness of the first and second lenses are: CT1<1.0 mm, CT2<0.6 mm. The radius of curvature of the front and back surfaces of the first lens are L1R1and L1R2that satisfy the condition as: |L1R1/L1R2|<0.5. The radius of curvature of the front and back surfaces of the third lens are L3R1and L3R2that satisfy the condition: |L3R1/L3R2|>0.3.

REFERENCES:
patent: 2004/0264003 (2004-12-01), Noda
patent: 2005/0002116 (2005-01-01), Nakamura
patent: 2005/0094292 (2005-05-01), Cahall et al.
patent: 2005/0270665 (2005-12-01), Do

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