Many new products that are responsive to energy conservation have been developed by the lighting industry. These include reduced wattage incandescent lamps in odd-wattage sizes, reduced wattage fluorescent lamps, an expansion in the line of mercury lamps to include sizes from 50 to 1500 watts, an expansion in the metal halide line to include 175-watt sizes in both vertical and horizontal burning designs, an expansion in the line of high-pressure sodium lamps to include sizes of 70 to 1000 watts, and the introduction of a number of HID types that can be substitued in existing sockets to increase efficiency, provide longer life, and reduce wattage. In addition, two outstanding accomplishments have been made by the luminaire manufacturers' segment of the industry. First, they have developed more effective candlepower distributions, which increase the coefficient of utilization and increase the lighting effectiveness factor by minimizing the downward component and increasing the candlepower in the 30- to 40-degree zone. Secondly, they have introduced new luminaires that provide improved visual comfort probability without reducing the coefficient of utilization.

  • Corporate Authors:

    Illuminating Engineering Society

    120 Wall Street, 17th Floor
    New York, NY  United States  10005-4001
  • Authors:
    • Dorsey, R T
  • Publication Date: 1976-1

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: p. 13-15
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00129900
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 10 1976 12:00AM