Two element plastic zoom camera lens

Details Two element plastic zoom camera lens Two element plastic zoom camera lens

1993-12-20

1995-12-05

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

359692, G02B 1514

Patent

active

054734738

ABSTRACT:
A zoom camera lens for an inexpensive camera, for example, a single use camera, has two plastic elements including a positive element and a negative element and a stop. Each of the surfaces of each of the elements is concave to the stop. Preferably, the lens has a curved image plane.

REFERENCES:
patent: 4932764 (1990-06-01), Simpson
patent: 4936661 (1990-06-01), Betensky et al.
patent: 5071235 (1991-12-01), Mori et al.
patent: 5087988 (1992-02-01), Nakayama
patent: 5270861 (1993-12-01), Estelle
patent: 5270867 (1993-12-01), Estelle
patent: 5381269 (1995-01-01), Estelle

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