Patent Number: 6,804,067

Title: Single focus lens

Abstract: A single focus lens is disclosed that is formed of only three lens components. In order from the object side, these are: a first lens component that has positive refractive power and includes a first lens element; an aperture diaphragm; a second lens component that has positive refractive power, at least one aspheric lens surface, and includes a second lens element made of plastic; and a third lens component that has positive refractive power, at least one aspheric lens surface, and includes a third lens element made of plastic. The following condition is satisfied: 1.0<f.sub.1 /f<5.0 where f.sub.1 is the focal length of the first lens component, and f is the focal length of the single focus lens.

Inventors: Sato; Kenichi (Ageo, JP)

Assignee: Fuji Photo Optical Co., Ltd.

International Classification: G02B 13/18 (20060101); G02B 13/00 (20060101); G02B 9/12 (20060101); G02B 015/14 ()

Expiration Date: 10/12/2021