Athermalized zoom lens system

Details Athermalized zoom lens system Athermalized zoom lens system

1982-04-13

1987-03-31

Corbin, John K.

G02B 1514

Patent

active

046538720

ABSTRACT:
A zoom lens system chiefly comprising organic glass lenses includes a plurality of lens groups including movable lens groups capable of changing their relative position to vary the focal length. At least one of the plurality of lens groups has a lens formed of inorganic glass, and all the lenses other than the inorganic glass lens are formed of organic glass. The inorganic glass lens is such that when it is replaced by an organic glass lens, the organic glass lens creates, by zooming, an amount of focus fluctuation corresponding to a variation in focus created in the entire system by zooming between predetermined temperatures, whereby the variation in focus position by zooming resulting from a variation in temperature of the entire system is corrected.

REFERENCES:
patent: 3920315 (1975-11-01), Linke
patent: 3972592 (1976-05-01), Ruben
patent: 4148548 (1979-04-01), Thompson
patent: 4469412 (1984-09-01), Tajima et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2209329