Zoom lens camera having converter lens incorporated therein

Details Zoom lens camera having converter lens incorporated therein Zoom lens camera having converter lens incorporated therein

1992-08-24

1993-11-09

Gellner, Michael L.

G03B 118

Patent

active

052607330

ABSTRACT:
A zoom lens camera in which variable power lens groups are moved in an optical axis direction of a zoom photographing optical system to vary the focal length thereof by a rotatable cam ring. A converter lens is provided to vary the focal length of the zoom photographing optical system. The cam ring is provided with a converter lens insertion hole in which the converter lens can be inserted to come into the optical axis of the zoom photographing optical system when the cam ring stops at a specific position.

REFERENCES:
patent: 4154508 (1979-05-01), Nakamura
patent: 4256371 (1981-03-01), Someya
patent: 4451129 (1984-05-01), Ikari et al.
patent: 4596449 (1986-06-01), Iwata et al.
patent: 4609269 (1986-09-01), Kamata
patent: 4887107 (1989-12-01), Nakamura et al.
Patent Abstracts of Japan, vol. 8, No. 211, (P-303) (1648), Oct. 26, 1984 of JP-A-59 094 708.

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