PROJECTION SCREEN AND WHITEBOARD DEVICE USING THE SAME

PROBLEM TO BE SOLVED: To provide a projection screen capable of obtaining clear projection images without generating any hot spot owing to a sufficient light diffusion reflectivity even when a high luminance projector is used and to provide a whiteboard device using the same allowing writing and era...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	TOYODA AKINORI, OSHIMA KENJI, NAKAJIMA KOJI, MIYAZONO YUTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS TRANSPORTING WRITING OR DRAWING IMPLEMENTS
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