Image pick-up lens

Optical: systems and elements – Lens – Including a nonspherical surface

Reexamination Certificate

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Details

C359S717000, C359S718000, C359S796000

Reexamination Certificate

active

07038861

ABSTRACT:
A low-cost bright image-pick up lens of a small size is provided which is short in total length, wherein the angle of field is beyond 30°; the angle of incidence onto the image pickup device is narrowed; and various aberrations are appropriately corrected. The image-pick up lens comprises, from the side of an object, an aperture stop, a biconvex positive lens, and a meniscus lens having a concave surface on the object side, and each of the lenses includes at least one aspheric surface.

REFERENCES:
patent: 5604639 (1997-02-01), Bietry et al.
patent: 5739965 (1998-04-01), Ohno
patent: 5917661 (1999-06-01), Tochigi et al.
patent: 6744570 (2004-06-01), Isono
patent: 2003/0117723 (2003-06-01), Shinohara
patent: 2003/0197953 (2003-10-01), Yamaguchi et al.
patent: 01-245211 (1989-09-01), None
patent: 04-211214 (1992-08-01), None
patent: 2003-075719 (2003-03-01), None
patent: 2003-227999 (2003-08-01), None
patent: 2004-004742 (2004-01-01), None

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