Projection optical system

Details Projection optical system Projection optical system

1977-08-10

1980-12-02

Sacher, Paul A.

350216, G02B 1504

Patent

active

042367891

ABSTRACT:
An optical system projects information recorded onto a record carrier on a projection plane. In the system a plurality of projecting lenses include a long focal length lens group composed of five lenses. As viewed from the projection plane there are two positive meniscus lenses (I and II) having their convex faces facing the projection plane, a concavo-concave lens (III), a convexo-convex lens (IV) and a negative meniscus lens having its convex face facing the record carrier.

REFERENCES:
patent: 1996054 (1935-04-01), Rowen
patent: 3588226 (1971-06-01), Ikezu
patent: 3955883 (1976-05-01), Sugiyama

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2280991