Image pick-up lens system

Details Image pick-up lens system Image pick-up lens system

2008-01-22

2008-01-22

Schwartz, Jordan M. (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S717000, C359S738000

Reexamination Certificate

active

07321475

ABSTRACT:
An image pick-up lens system includes an aperture stop (10), a biconvex first lens (20), and a meniscus-shaped second lens (30) having a concave surface on a side of an object. The aperture stop, the first lens and the second lens are aligned in that order from the object side to an image side. Each of the lenses has at least one aspheric surface, and the following conditions are satisfied: (1) 0.5<f1/f<0.9, and (2) 1<T/f<1.62, wherein f1 is a focal length of the first lens, f is a focal length of the system, and T is a length from the aperture stop to an image pick-up surface of the image side.

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