Wide angle zoom lens system

Details Wide angle zoom lens system Wide angle zoom lens system

1977-05-04

1980-02-19

Clark, Conrad J.

G02B 1516

Patent

active

041892127

ABSTRACT:
In a wide angle zoom lens system comprising a diverging lens group and a converging lens group which are both movable on the optical axis of the lens system to vary the air space between the two groups so that the magnification of the image is variable while the image plane is being maintained at a fixed position, the diverging lens group comprises, in order from the object side, a negative meniscus lens component convex to the object side, a positive lens component, a negative lens component, a positive meniscus lens component convex to the object side, the four lens components being separate from one another, and an air chamber having a converging effect being formed between the second and the third lens component, the third and the fourth lens component being so disposed that the air space therebetween is greater than the center thickness of the third member, and the converging lens group comprises at least four positive lens components a positive lens component out of which is closest to the object side and a positive lens component out of which is closest to the image side, and a negative lens component disposed among the at least four positive lens components, these five lens components being separate from one another.

REFERENCES:
patent: 3848969 (1974-11-01), Tajima

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-650819