Projection lens for high definition TV

Details Projection lens for high definition TV Projection lens for high definition TV

1987-12-30

1988-12-20

Corbin, John K.

350412, G02B 1318, G02B 962

Patent

active

047922184

ABSTRACT:
A high definition projection lens for projecting on a screen an enlargement of an image appearing on a high resolution CRT is disclosed. The projection lens comprises a first lens having a positive optical power and a convex surface facing the screen, a meniscus second lens having a positive optical power, a third lens having bi-concave surfaces and a negative optical power, a fourth lens having a positive optical power, a fifth lens having bi-convex surfaces and a positive optical power, and a sixth lens having a negative power and an aspheric concave surface facing the fifth lens.

REFERENCES:
patent: 3868173 (1975-02-01), Miles et al.
patent: 3961844 (1976-06-01), Betensky
patent: 4300817 (1981-11-01), Betensky
patent: 4348081 (1982-09-01), Betensky

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1906880