Bifocal optical system

Details Bifocal optical system Bifocal optical system

1989-12-12

1991-05-07

Dzierzynski, Paul M.

G02B 1502

Patent

active

050131427

ABSTRACT:
The bifocal optical system is formed in the long focal length mode by an objective having fixed lenses L1, L2, L3, L4 to which, for obtaining the short focal length, a group of movable lenses L5, L6, L7, L8 is added. The lenses L5, L6, L7 and L8 are accommodated in a holder (MB) which is rotatable around an axis YY' which extends parallel to the optical axis XX', thereby enabling very wide tolerances in the positioning of the movable holder.

Affiliated with

Also associated with

Rating

Bifocal optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-935710