Resilient frame construction for displaying transparencies

Details Resilient frame construction for displaying transparencies Resilient frame construction for displaying transparencies

1975-07-31

1976-12-21

Stephan, Steven L.

Optics: image projectors

Color filter

353 95, 353120, 353DIG5, G03B 2114, G03B 144

Patent

active

039985350

ABSTRACT:
An improved frame construction for supporting transparencies for projection by an overhead optical projector, including means for maintaining a transparency in fixed position relative to the projector, and means for selectively adding color to desired areas of the transparency for directing the attention of the viewer, and adding interest to the display. The colored areas may be oriented in either of two mutually perpendicular directions.

REFERENCES:
patent: 3269261 (1966-08-01), Porter
patent: 3537792 (1970-11-01), Furniss et al.

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