Patent ID: 6206544
Filing Date: 2001-03-27
Classification: F21V,F21W,G02B

Abstract:
A projection illumination fixture comprising in combination:a) at least one luminescent light tube each with an interior tubular surface lined with an emulsion coating including suspended titanium dioxide and phosphors for producing highly scattered sustained luminescent light emission of a desired mixture of red, blue and green light frequencies;b) at least one electrical energizing means electrically connected between a source of electrical energy and the luminescent light tube(s) for providing electron current pulses to the luminescent light tube(s) at a rate sufficient to excite/stimulate sustained luminescent light emission from the phosphors in the emulsion coatings;c) reflective surfaces positioned relative to the luminescent light tube(s) for reflecting the highly scattered sustained luminescent light emission emitted by the light tube(s) toward a reflector cavity aperture;d) a catadioptric lens having at least one structured planar surface for reflecting, refracting and collecting the highly scattered sustained luminescent light emission radiating into the reflector cavity aperture redirecting such light emission to predominantly radiate from each theoretical point on its outward facing planar surface into a light snoot structure toward a snoot aperture in a diverging ellipsoidal cone with an apex angle ranging from 50.degree. to 90.degree.; ande) a large area, Fresnel type projection lens having a focal length F.sub.L located across the snoot aperture receiving the redirected sustained luminescent light emission light radiating into the snoot aperture for projecting it to and spreading it in an illumination field.