Zoom lens apparatus

Details Zoom lens apparatus Zoom lens apparatus

1993-06-16

1999-05-18

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359695, 359696, 359697, 359698, 359699, 359700, 359704, G03B7/26

Patent

active

059055987

ABSTRACT:
A zoom lens apparatus which is superior in sound insulating and dust-proof properties and is easy to handle in transportation, storage and so forth. A lens system including a zoom lens set, a focusing lens set and an iris disposed on a single optic axis, a zoom lens driving section composed of a motor, a ball screw, a lens holding member, a nut member and so forth for driving the zoom lens, a focusing lens driving section composed of a guide rod, a lens holding member, a movable coil, an outer yoke, magnets and so forth for driving the focusing lens, and an iris motor for opening and closing the iris are accommodated in the housing having a substantially rectangular outer profile.

REFERENCES:
patent: 5113210 (1992-05-01), Kashiyama et al.
patent: 5241422 (1993-08-01), Shimada et al.
patent: 5255043 (1993-10-01), Kawasaki
patent: 5257058 (1993-10-01), Mauachi

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