Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

1998-11-25

2000-01-25

Ben, Loha

Optical: systems and elements

Lens

With support

359823, 359828, 359704, 396531, G02B 702

Patent

active

060184264

ABSTRACT:
A lens barrel is provided with a first barrel and a second barrel. The first barrel has a flange formed around its outer surface, and the flange has a plurality of clearances formed around its outer edge. The second barrel has a plurality of projections formed around its inner surface so as to protrude radially inward. The first and second barrels are coupled together by inserting all of the projections into the clearances and then rotating one of the first and second lens barrels relative to the other so that the projections engage with the flange. The first and second barrels are coupled together in such a way as to rotate independently of each other about an optical axis and move together with each other along the optical axis. In addition, in this lens barrel, each of the clearances is so shaped as not to receive any projection other than the correspondingly shaped one.

REFERENCES:
patent: 4307954 (1981-12-01), Ludwig
patent: 4448509 (1984-05-01), Katsuma et al.
patent: 5249082 (1993-09-01), Newman
patent: 5644441 (1997-07-01), Hirasaki et al.

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