Optical system of variable focal and back-focal length

Details Optical system of variable focal and back-focal length Optical system of variable focal and back-focal length

1983-01-05

1985-06-25

Punter, William H.

350520, G02B 1516

Patent

active

045250421

ABSTRACT:
In an optical system of variable focal and back-focal length for operation microscopes, an objective of fixed focal length is combined with an optical system of variable focal length consisting of two lens groups, the first lens group of which is displaceable. The objective projects a real, virtual, or infinity image of the object and the displaceably arranged lens group of the optical system of variable focal length images the image projected by the objective into the focal point of the second lens group of the system. The second lens group consists of two parts which are displaceable in the direction of their optical axis in order to adjust the focal length of the microscope.

REFERENCES:
patent: 3045545 (1962-07-01), Korones et al.
patent: 3456998 (1969-07-01), Rosenberger et al.

Affiliated with

Also associated with

Rating

Optical system of variable focal and back-focal length does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical system of variable focal and back-focal length, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical system of variable focal and back-focal length will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-551839