Lens module having intercoupling slits and restricting members

Details Lens module having intercoupling slits and restricting members Lens module having intercoupling slits and restricting members

2010-03-05

2011-12-06

Mack, Ricky (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

Reexamination Certificate

active

08072691

ABSTRACT:
An exemplary lens barrel includes an accommodating member having a cylinder, a lens barrel, a holder for fixing the accommodating member, and a resilient member. The cylinder has a plurality of stepwise slits each having an end exposed at an underside surface thereof. The lens barrel has a plurality of restricting elements extending from an outer surface thereof. The lens barrel is coaxially accommodated in the cylinder with the restricting element passing through a corresponding slit. The resilient member is sandwiched between the lens barrel and the holder, capable of changing its length under an external force, such that a focal length of the lens module is adjustable when the restricting elements move in and along the slits.

REFERENCES:
patent: 5381272 (1995-01-01), Kato et al.
patent: 2008/0031612 (2008-02-01), Chang

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