Lens assembly of camera

Details Lens assembly of camera Lens assembly of camera

2005-09-06

2005-09-06

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S761000, C359S754000, C359S680000

Reexamination Certificate

active

06940661

ABSTRACT:
A lens assembly, which is mounted on a digital still camera (DSC), comprises a fixed aperture, and a lens unit. The lens unit has a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence. The first lens is a biconvex lens disposed at the front side of the lens unit. The second lens is a biconcave lens. The third lens is a positive lens with having a larger curvature radius facing the objective side. The fourth lens is a negative meniscus lens. The fifth lens is a positive lens with a surface having a larger curvature radius facing the image side. The fourth lens and the fifth lens are attached together to form a compound lens. The aperture is disposed in front of the first lens.

REFERENCES:
patent: 6094312 (2000-07-01), Nakayama

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