Light tunnel for uniformly illuminating an object

A light tunnel for unidirectionally and totally illuminating an object located perpendicular to the long dimension adjacent the exit aperture of the tunnel. In one embodiment, certain portions of the inner surfaces of the light tunnel are coated with a light absorbing coating which absorbs all highe...

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Bibliographische Detailangaben
Hauptverfasser:	WEBER, PAUL EGON
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 BLASTING CINEMATOGRAPHY ELECTROGRAPHY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING HOLOGRAPHY LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	A light tunnel for unidirectionally and totally illuminating an object located perpendicular to the long dimension adjacent the exit aperture of the tunnel. In one embodiment, certain portions of the inner surfaces of the light tunnel are coated with a light absorbing coating which absorbs all higher order light rays, while allowing all lower order light rays to pass without interference to the aperture at the tunnel exit. In a further embodiment, the angle at which the light enters the tunnel through an entrance aperture is varied to maintain uniform exit aperture illumination. In still another embodiment, a coating of light-absorbing material adjacent the entrance aperture of the light tunnel permits only light entering the tunnel within a predetermined angular range to pass through the tunnel to the exit aperture.