Taking optical system for video shooting

Details Taking optical system for video shooting Taking optical system for video shooting

1998-10-01

1999-10-05

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

359663, 359676, 359683, 359708, G02B 1516, G02B 1318

Patent

active

059633778

ABSTRACT:
A zoom lens system is provided with, from the object side, a first lens unit having a negative optical power, a second lens unit having a positive optical power, a third lens unit having a negative optical power, and a condenser lens unit having a positive optical power. In this zoom lens system, zooming is performed by varying the distances between the first, the second, the third lens unit, and the condenser lens unit. Additionally, this zoom lens system fulfills the condition below:

REFERENCES:
patent: 4477148 (1984-10-01), Tsuji et al.
patent: 5009491 (1991-04-01), Hata
patent: 5682203 (1997-10-01), Kato
patent: 5805350 (1998-09-01), Yamamoto
patent: 5872660 (1999-02-01), Kohno et al.

Affiliated with

Also associated with

Rating

Taking optical system for video shooting does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Taking optical system for video shooting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Taking optical system for video shooting will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1178634