Projection lens

Details Projection lens Projection lens

1979-09-05

1981-11-17

Corbin, John K.

350432, 350477, G02B 304, G02B 912, G02B 2718

Patent

active

043008178

ABSTRACT:
A projection lens for cathode ray tube display comprising from the image end an element of relatively weak optical power a bi-convex element of positive power providing substantially all the positive power of the overall lens and a third group comprising a negative element having a concave image side surface serving as a field flattener.

REFERENCES:
patent: 2440088 (1948-04-01), Grey
patent: 2649021 (1953-08-01), Angenieux
patent: 3429997 (1969-02-01), Rosner et al.
patent: 3800085 (1974-03-01), Ambats
patent: 3868173 (1975-02-01), Miles et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1290058