Zoom lens system for a lens shutter camera

Details Zoom lens system for a lens shutter camera Zoom lens system for a lens shutter camera

1998-06-24

1999-11-23

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359717, G02B 1514

Patent

active

059910941

ABSTRACT:
A zoom lens system is composed of two lens units. The first lens unit is arranged at an object-side end and the second lens unit is arranged at an image-side end. The first lens unit has one lens element of a positive refractive power. The second lens unit has two lens elements. One is an aspherical plastic lens of non-refractive power. The other is a lens having a negative refractive power. During zooming from a wide angle end to a telephoto end, the distance between the first and second lens units is decreased.

REFERENCES:
patent: 4936661 (1990-06-01), Betensky et al.
patent: 5162947 (1992-11-01), Ito
patent: 5168403 (1992-12-01), Umeda et al.
patent: 5218478 (1993-06-01), Itoh
patent: 5270861 (1993-12-01), Estelle
patent: 5270867 (1993-12-01), Estelle
patent: 5309285 (1994-05-01), Ito
patent: 5315440 (1994-05-01), Betensky et al.
patent: 5327290 (1994-07-01), Fukushima et al.
patent: 5341244 (1994-08-01), Lin
patent: 5386321 (1995-01-01), Kawamura
patent: 5418647 (1995-05-01), Ishisaka
patent: 5434712 (1995-07-01), Ito
patent: 5479295 (1995-12-01), Ohtake
patent: 5541773 (1996-07-01), Kamo et al.
patent: 5610767 (1997-03-01), Ito
patent: 5663837 (1997-09-01), Ohtake et al.
patent: 5663838 (1997-09-01), Hasushita et al.
patent: 5798873 (1998-08-01), Hoshi et al.
patent: 5808812 (1998-09-01), Kamo
patent: 5815324 (1998-09-01), Yamamoto
patent: 5825557 (1998-10-01), Ohno
patent: 5864435 (1999-01-01), Toyama

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1228807