Photographing lens

Details Photographing lens Photographing lens

1996-11-12

1998-01-06

Nelms, David C.

Optical: systems and elements

Lens

Multiple component lenses

359740, 359794, G02B 1302

Patent

active

057061416

ABSTRACT:
A photographing lens includes a first lens group, a diaphragm, and a positive second lens group, in this order from the object side. The photographing lens satisfies the following relationships: .vertline.f/f.sub.1 .vertline.<0.2, and 0.7<h.sub.I-1 /h.sub.I-L <1.0. In the above relationships, "f" designates the focal length of the entire photographing lens, "f.sub.1 " the focal length of the first lens group, "h.sub.I-1 " the height of the incident point of paraxial rays on axis on the first surface of the first lens group, and "h.sub.I-L " the height of the incident point of paraxial on-axis rays on the last surface of the first lens group, respectively.

REFERENCES:
patent: 4818081 (1989-04-01), Ito
patent: 5280390 (1994-01-01), Ito
patent: 5490014 (1996-02-01), Suzuki
patent: 5546232 (1996-08-01), Hirakawa

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2334293