Bright viewing and focusing screens

Details Bright viewing and focusing screens Bright viewing and focusing screens

1984-05-09

1985-12-17

Mathews, A. A.

354200, 354219, G03B 1324, G03B 260

Patent

active

045589224

ABSTRACT:
An image forming screen for optical systems has a Fresnel plastic lens having a replica of a ground glass surface on the surface opposite to that of the rings. The image surface is coated with a thin layer of optically clear epoxy material increasing the brightness of images formed on the screen.

REFERENCES:
patent: 2726573 (1955-12-01), Maloff
patent: 3712707 (1973-01-01), Henkes
patent: 4309073 (1982-01-01), Nishimura et al.
patent: 4339188 (1982-07-01), Smith

Affiliated with

Also associated with

Rating

Bright viewing and focusing screens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bright viewing and focusing screens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bright viewing and focusing screens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2171608