Camera lens

Details Camera lens Camera lens

1991-02-15

1992-11-03

Howell, Janice A.

Optical: systems and elements

Lens

359765, G02B 960

Patent

active

051610604

ABSTRACT:
A camera lens with a relative aperture of 1:1.4 and a focal length of 35 mm has five components. The first component includes a cemented element which is concave on the object side. The second component includes a cemented element which has an aspherical convex surface on the object side. The third component serves as an individual lens. The fourth component includes a cemented element which is concave on the object side. The fifth component has a cemented element which includes a concave surface on the image side and an aspherical convex surface on the object side.

REFERENCES:
patent: 4477154 (1984-10-01), Sato
patent: 4576448 (1986-03-01), Ikari
patent: 4659190 (1987-04-01), Mihara
patent: 4838670 (1989-06-01), Ueda et al.

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