Zoom lens

Details Zoom lens Zoom lens

1981-07-20

1984-08-14

Corbin, John K.

350432, G02B 1318, G02B 1514

Patent

active

044653425

ABSTRACT:
A zoom lens comprising, from front to rear, a first lens component having a positive focal length, a second lens component having a negative focal length and a third group having a positive focal length, the first and second lens components being moved to effect zooming, and the first lens component being moved to effect focusing. The above-described first, second and third lens components are each provided with at least one aspheric lens. The first lens component has a negative third order aspheric quantity and the second lens component has a positive third order aspheric quantity to realize a zoom lens of high imaging performance with fewer constituent lens elements.

REFERENCES:
patent: 3920315 (1975-11-01), Linke
patent: 4306776 (1981-12-01), Someya

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-111402