Variable focal length lens system

Details Variable focal length lens system Variable focal length lens system

1987-02-27

1989-03-07

Corbin, John K.

350432, 350465, 350422, G02B 1514, G02B 1318, G02B 960, G02B 1502

Patent

active

048100714

ABSTRACT:
A variable focal length lens system comprising a first lens unit which comprises a negative meniscus lens and a positive lens, a second lens unit which comprises a negative lens, and a third lens unit which comprises at least three lenses including at least one negative lens, the variable focal length lens system being arranged to vary the focal length by moving the second lens unit and arranged to have a large aperture ratio and high vari-focal ratio and to be small in size.

REFERENCES:
patent: 2554679 (1951-05-01), Mitchell
patent: 3160699 (1964-12-01), Yamaji
patent: 3972592 (1976-08-01), Ruben

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1664541