Projection device

Details Projection device Projection device

1976-02-24

1978-06-27

Stephan, Steven L.

Optics: image projectors

Target, map or navigation projection

353 42, 353 86, 353 94, 353101, G03B 2100, G03B 2120, G03B 2126, G03B 2114

Patent

active

040971341

ABSTRACT:
A projection device provided with at least two different enlarging projection systems for the projection on a screen of a set of at least two slides provided on one carrier, said slides covering the same area of a plan or map, one slide being more detailed than the other. The device projects the first less detailed slide entirely and the second or next, more detailed slide only in part but on a larger scale.
The device comprises further a transparent runner indicating on the first slide the part of the next slide that is projected.

REFERENCES:
patent: 2130562 (1938-09-01), Pratt
patent: 2558999 (1951-07-01), Aldrich
patent: 3045541 (1962-07-01), Bregman
patent: 3319517 (1967-05-01), Rondas et al.
patent: 3674350 (1972-07-01), Staiger

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2301535