Lens barrel

Details Lens barrel Lens barrel

1994-12-20

1998-10-06

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

G02B 1514

Patent

active

058186476

ABSTRACT:
A lens barrel includes a fixed frame, lens groups on the inner circumference of the fixed frame movable along an optical axis respective to the fixed frame, three lens holding frames each holding a lens group, a cam frame having bottomed cam grooves coupled with the inner circumference of the fixed frame through cams, bottomed cam grooves crossing each other coupled with the lens holding frames through cams and a bottomed cam groove discontinued on one end surface and continued on another end surface, a key member regulating rotation of the lens holding frames about an optical axis and reinforcing the entire lens barrel, a cam mechanism interposed between the cam frame and lens holding frames for moving the lens holding frames along the optical axis by the rotation of the cam frame about the optical axis with respect to the fixed frame, an internal gear on the cam frame inner circumference, a pinion gear transmitting a drive force from a drive source to the internal gear, flexible printed substrates overlapped in a thickness direction with a uniform width and electrically connected to lens frames moving along the optical axis, being U-shaped and shaped not to overlap each other at the bent portions, rod members having two lens holding frames at both ends along the optical axis of the three lens holding frames, and extending parallel to the optical axis, and bearings between the two lens holding frames for receiving rod members.

REFERENCES:
patent: 5082360 (1992-01-01), Sato et al.
patent: 5218479 (1993-06-01), Chiou et al.
patent: 5488513 (1996-01-01), Tanaka

Affiliated with

Also associated with

Rating

Lens barrel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lens barrel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens barrel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-85371