Wide angle zoom objective

Details Wide angle zoom objective Wide angle zoom objective

1983-01-20

1986-02-18

Corbin, John K.

350423, 350432, G02B 964, G02B 1514

Patent

active

045710317

ABSTRACT:
A wide angle zoom objective has three lens units of which the first counting from front is of negative power, the second is of positive power and the third is of negative power. At least one lens surface in the first unit has an aspheric surface, and the units are arranged to move differentially during zooming.

REFERENCES:
patent: 2704487 (1955-03-01), Rosier
patent: 2906171 (1959-09-01), Bergstein
patent: 4111558 (1978-09-01), Ikemori
patent: 4159865 (1979-07-01), Kawamura et al.
patent: 4168110 (1979-09-01), Itoh

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1548353