Lens barrel

Details Lens barrel Lens barrel

1997-05-29

1999-04-20

Ben, Loha

Optical: systems and elements

Lens

With support

359811, 359822, G02B 702

Patent

active

058962344

ABSTRACT:
Disclosed is a lens barrel capable of restraining an error of an inter-lens spacing accuracy in a lens frame down to several .mu.m or under. The lens barrel has a plurality of lenses, and a lens frame for holding these lenses at predetermined intervals to make optical axes of the lenses coincident. Provided are at least three steel balls contiguous to lens surfaces, facing to each other, of the two lenses among those lenses. The three steel balls are disposed so that the centers of the steel balls are positioned on the same circumference about the lens optical axis. The steel balls are in contact with substantially trisected portions along an inner peripheral surface having an inside diametrical dimension smaller than a maximum inside diameter portion formed in the lens frame. The lens frame is provided with wall portions for regulating motions of the steel balls in the circumferential and radial directions.

REFERENCES:
patent: 4961627 (1990-10-01), Swain et al.
patent: 5506731 (1996-04-01), Smiley
patent: 5600495 (1997-02-01), Sekikawa
patent: 5694257 (1997-12-01), Arnone et al.

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-2251727