Lens frame

Details Lens frame Lens frame

1991-10-11

1993-06-08

Arnold, Bruce Y.

Optical: systems and elements

Lens

With support

359827, G02B 702

Patent

active

052184846

ABSTRACT:
A lens frame consists of a lens barrel with a built-in projection lens and a support member in which the lens barrel is inserted and supported. The lens barrel has on its outer surface a pair of axially spaced projections as a slide member. The support member has on its inner surface projected guide strips that extend inclined with respect to a plane perpendicular to the axis of the support member. The support member also has axially extending ribs on the inner surface that tightly engage with the outer surface of the lens barrel as the latter is inserted into the former, in order to keep their axes aligned. With the lens barrel inserted and the projected guide strip received between the paired projections, the lens barrel is rotated and the paired projections are guided along the inclined projected guide strip, causing the lens barrel to move forward or backward in the axial direction. In this way, the focus adjustment can easily be made. The tight engagement between the ribs and the lens barrel produces contact friction that helps prevent the lens barrel from being turned inadvertently after the focus adjustment is made.

REFERENCES:
patent: 3202049 (1965-08-01), Bond
patent: 4153340 (1979-05-01), Uesugi
patent: 4526440 (1985-07-01), Lundberg et al.
patent: 5054886 (1991-10-01), Ozaki et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1946269