Drive mechanism of a zoom lens

Details Drive mechanism of a zoom lens Drive mechanism of a zoom lens

2007-06-12

2007-06-12

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S819000, C359S811000, C359S821000

Reexamination Certificate

active

11209631

ABSTRACT:
A drive mechanism of a zoom lens includes three movable members which support optical elements, including a front movable member, an intermediate movable member and a rear movable member; a common driving member including a driving device for moving the three movable members independently; and a biasing member including first and second spring members which bias the three movable members to remove backlash. One of the front movable member and the rear movable member serves as a common-engaging spring support member to which one end of each of the first and second spring members are connected, and the other of the front movable member and the rear movable member, and the intermediate movable member serve as two single-engaging spring support members to which the other ends of the first spring member and the second spring member are connected, respectively.

REFERENCES:
patent: 4764784 (1988-08-01), Torikoshi et al.
patent: 6147814 (2000-11-01), Kitazawa et al.
patent: 2002/0141074 (2002-10-01), Nakane
patent: 2003/0156832 (2003-08-01), Nomura et al.
patent: 2004/0042089 (2004-03-01), Nomura
patent: 2004/0042091 (2004-03-01), Nomura
patent: 2004/0042777 (2004-03-01), Nomura
patent: 2004/0051971 (2004-03-01), Nomura
patent: 2001-174686 (2001-06-01), None
patent: 2003-050342 (2003-02-01), None
patent: 2004-109709 (2004-04-01), None
patent: 2004-212624 (2004-07-01), None
English language Abstract of JP 2001-174686.
English language Abstract of JP 2003-050342.
English language Abstract of JP 2004-109709.
English language Abstract of JP 2004-212624.
U.S. Appl. No. 11/209,617 to Isizuka et al., filed Aug. 24, 2005.

Affiliated with

Also associated with

Rating

Drive mechanism of a zoom lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drive mechanism of a zoom lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive mechanism of a zoom lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3883035