Soft focus lens

Details Soft focus lens Soft focus lens

1996-12-23

1998-10-13

Font, Frank G.

Optical: systems and elements

Lens

With variable magnification

359692, 359698, 359707, 359795, G02B 1514

Patent

active

058221328

ABSTRACT:
A soft focus lens which is designed as a retrofocus type lens, comprises a front lens group having a negative power, a rear lens group having positive power, and a diaphragm located within the rear lens group. The front and rear lens groups are arranged in this order from an object side. In particular, the soft focus lens satisfies the following conditions;

REFERENCES:
patent: 4203653 (1980-05-01), Mori
patent: 4830473 (1989-05-01), Kudo
patent: 4948236 (1990-08-01), Hirano
patent: 5233474 (1993-08-01), Hirakawa
patent: 5267086 (1993-11-01), Hirano

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