Lens structure having a movable portion

Details Lens structure having a movable portion Lens structure having a movable portion

1974-12-05

1976-04-20

Sacher, Paul A.

350276SL, G02B 1514

Patent

active

039515222

ABSTRACT:
In a lens structure having a movable portion, a pair of movable lenses and holder frames therefor are slidably fitted together within a guide cylinder, and a stationary cylindrical light shield is provided to cover the surface of the guide cylinder along which the lens holder frames are slidable. The frames each have a pair of radial connecting spokes extending through slots in the light shield, to connect the support of the movable lenses to the sliding member guided by the guide cylinder, so that the light shield extends to beyond the rearmost position of the forward movable lens and undesired reflection at the sliding surfaces of the movable lens frame and of the guide cylinder is prevented.

REFERENCES:
patent: 2670656 (1954-03-01), Braymer
patent: 2902901 (1959-09-01), Back

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1583229