Focusing mechanism for varifocal objective

Details Focusing mechanism for varifocal objective Focusing mechanism for varifocal objective

1976-07-28

1977-10-18

Sacher, Paul A.

350187, G02B 1518

Patent

active

040543722

ABSTRACT:
A varifocal objective with a four-component front lens group, including axially shiftable second and third components, is provided with a focusing mechanism for the joint displacement of these second and third components as well as a further lens member relatively to the axially fixed first component, that further lens member being either the fourth component of the front lens group or part of an otherwise fixed rear lens group. In the case of an afocal front lens group the last three components thereof are displaced in unison by the focusing mechanism. The lens shifts can be co-ordinated by electric servomotors under the control of stored data.

REFERENCES:
patent: 3348899 (1967-10-01), Price
patent: 3961845 (1976-06-01), Doi et al.
patent: 3975089 (1976-08-01), Betensky

Affiliated with

Also associated with

Rating

Focusing mechanism for varifocal objective does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1444744