Photographic system having front conversion lens

Details Photographic system having front conversion lens Photographic system having front conversion lens

Filed on

1987-11-18

Date issued

1989-08-08

Examiner

Arnold, Bruce Y.

Other Related Categories

G02B 1506

Type

Patent

Status

active

Patent number

048546798

Description

ABSTRACT:
To minimize the size of a front conversion lens, an aperture stop is arranged on the object side of a master lens, and the front conversion lens is made releasably attachable.

REFERENCES:
patent: 1169731 (1916-01-01), Mengel
patent: 2829559 (1958-04-01), Lautenbacher

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