Zoom lens

Details Zoom lens Zoom lens

1983-06-21

1985-06-18

Corbin, John K.

G02B 964, G02B 1518

Patent

active

045238146

ABSTRACT:
A zoom lens comprising, in order from the object, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power and a fourth lens group having a positive refractive power. The first through fourth lens groups are independently moved in an axial direction to vary the overall focal length. The zoom lens meets the following conditions:

REFERENCES:
patent: 4299454 (1981-11-01), Betensky
patent: 4359270 (1982-11-01), Okudaira

Affiliated with

Also associated with

Rating

Zoom lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-977735