Method for reducing a light intensity of a projection device

A method for reducing a light intensity of a projection device (10) is specified, comprising the following steps: projecting information (30a, 30b,... 30e) in the form of a visual representation onto an overall area (20); emitting a plurality of electromagnetic signals (indicated by 50, 51,... 55) t...

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Bibliographische Detailangaben
Hauptverfasser:	PILARD GAEL, KREYE DANIEL, SLOGSNAT DAVID, LIU MING, FISCHER FRANK
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	A method for reducing a light intensity of a projection device (10) is specified, comprising the following steps: projecting information (30a, 30b,... 30e) in the form of a visual representation onto an overall area (20); emitting a plurality of electromagnetic signals (indicated by 50, 51,... 55) that are substantially imperceptible to an observer onto the overall area by means of the projection device (10); with the aid of the electromagnetic signals detecting objects situated in the beam path between projection device (10) and overall area (20); and reducing the light intensity of the projection device (10) during the period an object is detected in the beam path.