Zoom lens barrel

Details Zoom lens barrel Zoom lens barrel

1994-08-01

1995-07-18

Epps, Georgia Y.

Optical: systems and elements

Lens

With light limiting or controlling means

359233, 354253, 354288, 3542341, G02B 908

Patent

active

054347149

ABSTRACT:
A barrier mechanism for a zoom lens assembly which includes a stationary lens barrel and a rotatable cam ring which is supported on the stationary lens barrel for movement in the direction of the optical axis while being rotated, and which includes at least two cam grooves. The barrier mechanism of the lens barrel includes a pair of barrier plate assemblies which are adapted to open and close an opening of the lens barrel, wherein each of the pair of barrier plate assemblies includes a pair of plate elements which are symmetrically arranged with respect to a center of the opening. In the closed position, the barrier plates are arranged side by side.

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