A Multi-PAR Lamp Luminaire for Light Projection

F. E. Carlson

The properties of the sealed-beam types of tungsten-filament lamps are utilized in a luminaire, the characteristics of which include: substantially higher peak beam candlepower at narrower beam spreads than have been reported for tungsten-filament spotlights of comparable wattage; oval or approximately rectangular beam patterns of rather precise angular dimensions by the use of refractive plates on or in front of the lamps; a step type of dimming control that does not alter the color temperature of the composite beam. These features and the methods of obtaining them are discussed.

Print ISSN
Published
1959-09
Content type
Original Research
DOI
10.5594/J11013