Enlarging lens system

Details Enlarging lens system Enlarging lens system

1976-01-12

1977-03-22

Corbin, John K.

350214, G02B 1324, G02B 964

Patent

active

040133460

ABSTRACT:
An enlarging lens system comprising a front lens group which comprises a first, second, third and fourth lens components and a rear lens group which comprises a fifth, sixth and seventh lens components in which the first and second lens components are positive meniscus lenses, the third lens component is a positive meniscus lens consisting of a single lens or cemented doublet lens, the fourth lens component is a negative meniscus lens consisting of a single lens or cemented doublet lens, the fifth lens component is a negative meniscus lens consisting of a single lens or cemented doublet lens, and the sixth and seventh lens components are positive meniscus lenses, said enlarging lens system satisfying the following conditions. ##EQU1## Said enlarging lens system has the aperture ratio of F/3.5 and field angle of 50.degree. and is arranged so that at image of good quality can be obtained over the whole field.

REFERENCES:
patent: 3351412 (1967-11-01), Solisch et al.
patent: 3738739 (1973-06-01), Glatzel et al.
patent: 3874771 (1975-04-01), Behrens et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1953507