Lens system capable of close-up photographing

Details Lens system capable of close-up photographing Lens system capable of close-up photographing

1989-07-03

1991-01-22

Dzierzynski, Paul M.

350428, G02B 912

Patent

active

049866435

ABSTRACT:
A lens system capable of close-up photographing comprises, in succession from the object side, a first lens group having a positive refactive power, a second lens group having a positive refractive power, and a third lens group having a negative refractive power. The first lens group and the second lens group are moved relative from each other for focusing to infinity to a close distance so that the spacing between the first lens group and the second lens group is reduced and the spacing between the second lens group and the third lens group is enlarged. The first and second lens groups are designed to satisfy the following condition:

REFERENCES:
patent: 4786153 (1988-11-01), Ogata

Affiliated with

Also associated with

Rating

Lens system capable of close-up photographing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lens system capable of close-up photographing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lens system capable of close-up photographing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1551543