Retracting mechanism of a zoom lens barrel

Details Retracting mechanism of a zoom lens barrel Retracting mechanism of a zoom lens barrel

2005-02-08

2005-02-08

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S700000, C359S701000, C359S702000

Reexamination Certificate

active

06853500

ABSTRACT:
A retracting mechanism of a zoom lens barrel includes a first through third lens group moving rings; a first linear guide projection formed on the first lens group moving ring to be engaged in a linear guide slot from outside the second lens group moving ring, the first linear guide projection including a hanging groove formed therealong, a rear end of the hanging groove being closed; a second linear guide projection formed on the third lens group moving ring to be engaged in the linear guide slot from inside the second lens group moving ring; and a linear moving key projecting from a front end of the second linear guide projection to be engaged in the hanging groove. A rear moving limit of the third lens group moving ring is determined by contact of the linear moving key with the closed end of the hanging groove.

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