Zoom lens structure

Details Zoom lens structure Zoom lens structure

2007-05-22

2008-12-02

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S701000, C359S704000

Reexamination Certificate

active

07460313

ABSTRACT:
The present invention discloses a zooming lens structure comprising at least a fixed lens barrel, an diaphragm member, a front track lens barrel, a rear track lens barrel, a front lens barrel module and a rear lens barrel module, wherein the first guide screw cylinder of the front lens barrel module is driven through geometric correlation of the first guide slot of the fixed lens barrel and the first track of the front track lens barrel to enable the front lens barrel module to shift within the fixed lens barrel; again, the second guide screw cylinder of the rear lens barrel module is driven through geometric correlation of the second guide slot of the fixed lens barrel and the second track of the rear track lens barrel to enable the rear lens barrel module to shift within the fixed lens barrel, and since the screw bolt locks the front and rear track lens barrel, the front and rear track lens barrels rotate simultaneously, and the first guide screw cylinder and the second guide screw cylinder then are simultaneously driven to achieve zooming effect.

REFERENCES:
patent: 6606206 (2003-08-01), Takeshita et al.
patent: 6934096 (2005-08-01), Takeshita et al.
patent: 7016123 (2006-03-01), Yano
patent: 7133216 (2006-11-01), Takeshita et al.
patent: 7199945 (2007-04-01), Tsuzuki

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