Collapsible type zoom lens barrel having space for accommodating

Details Collapsible type zoom lens barrel having space for accommodating Collapsible type zoom lens barrel having space for accommodating

1999-05-28

2000-09-19

Mack, Ricky

Optical: systems and elements

Lens

With support

359823, G02B 702

Patent

active

061221163

ABSTRACT:
A structure, used for a collapsible type of zoom lens barrel provided in a camera, which makes advantageous a wiring of an electric wire extending between a side of a camera body and an electrically driven device which is installed within a space inside the zoom lens barrel, in an attempt of effective use of the space therein. The zoom lens barrel includes: a stationary lens barrel, rectangular in cross section, fitting to a rectangular exposure window of a picture frame in front of a film set inside the camera body; a first movable lens barrel, rectangular in cross section, slidably fitted inside the stationary lens barrel; and a second movable lens barrel, circular in cross section, slidably fitted inside the first movable lens barrel, in which the zoom lens barrel can take a projecting state and a retracting state. In the retracting state, the space is formed between the first movable lens barrel and the second movable lens barrel, in which space the electrically driven device is positioned.

REFERENCES:
patent: 5196963 (1993-03-01), Sato et al.
patent: 5198932 (1993-03-01), Takamura

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