Wide-angle lens

Details Wide-angle lens Wide-angle lens

1996-11-27

2000-02-29

Nguyen, Thong

Optical: systems and elements

Lens

Including a nonspherical surface

359739, 359793, G02B 1318

Patent

active

060316705

ABSTRACT:
The present invention is directed toward a wide-angle lens. Because of a small quantity (two) of lens elements, the wide-angle lens facilitates size and weight reduction and permits low-cost manufacture. The lens is made from plastic, which permits further cost reduction. The lens is particularly useful when employed in CCD cameras.

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patent: 5005955 (1991-04-01), Ohshita
patent: 5508848 (1996-04-01), Inoue

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