Lens system

Details Lens system Lens system

1995-12-22

1998-09-15

Sugarman, Scott J.

Optical: systems and elements

Lens

Multiple component lenses

G02B 934

Patent

active

058088156

ABSTRACT:
A lens system comprises, in order from a first side to a second side four lens elements. They are: a first, positive power lens element having its convex surface oriented towards the first side; a second, negative power lens element; a third, meniscus lens element having its concave surface oriented towards the first side; and a fourth, meniscus lens element having its concave surface oriented towards the second side.

REFERENCES:
patent: 1540752 (1925-06-01), Bielicke
patent: 3011401 (1961-12-01), Sandback
patent: 3020804 (1962-02-01), Cox et al.
patent: 3074316 (1963-01-01), Cox et al.
patent: 3944339 (1976-03-01), Momiyama
patent: 4384766 (1983-05-01), Tokuhara
patent: 4441792 (1984-04-01), Tateoka
patent: 4634235 (1987-01-01), Fujioka
patent: 5161060 (1992-11-01), Watz

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