Wide angle zoom lens

Details Wide angle zoom lens Wide angle zoom lens

1980-12-12

1982-12-21

Corbin, John K.

G02B 1516

Patent

active

043646417

ABSTRACT:
This specification discloses a zoom lens which comprises, in succession from the object side, a divergent lens group and a convergent lens group and whose magnification is changed by relative movement of the two groups. The divergent lens group comprises, in succession from the object side, three continuous negative meniscus lenses having their respective convex surfaces facing the object side and a positive lens having its surface of sharper curvature facing the object side. The convergent lens group comprises, in succession from the object side, a single biconvex positive lens, a meniscus lens comprising a doublet and having its convex surface facing the object side, a positive lens, a negative lens and two continuous positive lenses. The zoom lens satisfies predetermined conditions.

REFERENCES:
patent: 3880498 (1975-04-01), Liu et al.
patent: 4159165 (1979-06-01), Betensky et al.
patent: 4159865 (1979-07-01), Kawamura et al.
patent: 4196968 (1980-04-01), Itoh

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-403808