Compact zoom lens for use in a lens shutter camera

Details Compact zoom lens for use in a lens shutter camera Compact zoom lens for use in a lens shutter camera

1992-12-22

1995-05-23

Sugarman, Scott J.

Optical: systems and elements

Lens

With variable magnification

G02B 1514

Patent

active

054186471

ABSTRACT:
A compact zoom lens constituted of, from an object side, a first lens group having a positive refractive power and a second lens group having a negative refractive power, in which image magnification is varied by adjusting the distance between the two lens groups. The first lens group is composed of a front lens component having a negative refractive power including at least one aspherical surface and a rear lens component having a positive refractive power. The front lens component is composed of the first negative lens and the second meniscus lens. The convex surface of the meniscus lens is directed to the image side. The following inequality is satisfied: .upsilon.n<35 where .upsilon.n is the Abbe's number of the lens which has a stronger negative refractive power of the two lenses in the front component of the first lens group.

REFERENCES:
patent: 5168403 (1992-12-01), Umeda et al.
patent: 5270867 (1993-12-01), Estelle
patent: 5280390 (1994-01-01), Ito

Affiliated with

Also associated with

Rating

Compact zoom lens for use in a lens shutter camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compact zoom lens for use in a lens shutter camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact zoom lens for use in a lens shutter camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2144287