A metal halide lamp that provides unique lighting system brightness and uniformity opportunities

Journal Article · Tue Nov 01 00:00:00 EST 1983 · IEEE Trans. Ind. Appl.; (United States)

DOI:https://doi.org/10.1109/TIA.1983.4504338· OSTI ID:6689580

Gotti, M B; Paugh, R L

Typically, metal halide lamps exhibit a substantial loss in efficacy and reduction in life when operated horizontally. A novel lamp design is described that permits transverse mounting of the optimal arc tube design within an outer bulb. Combined with a prefocusing type mogul base, this lamp operates the arc tube vertically while the outer bulb is horizontal. Thus the high lamp efficacy, long life, and better lumen output maintenance throughout life previously only available in the vertical burning lamp is available in the horizontal burning type. From an application viewpoint, a lighting fixture designed to utilize a horizontal burning lamp intrudes less into the plenum area. Particularly in a new multifloor construction, a reduction in plenum height can reduce initial cost. In addition to possible reduced cost, this horizontal burning lamp controls the direction in which light is emitted from the lamp that can result in lighting distributions from typical luminaires that provide better lighting uniformity and a reduction in luminaire luminance when compared with typical lamps having the arc tube parallel to the lamp axis. This improved system performance has applications in both indoor and outdoor lighting systems in existing and new lighting luminaires.

• Research Organization: High Intensity and Quartz Lamp Dept., G.E. Co., 8499 Davrow Rd., Edison Park, Twinsburg, OH 44087
• OSTI ID: 6689580
• Journal Information: IEEE Trans. Ind. Appl.; (United States), Vol. 19:6
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
LIGHT BULBS
BRIGHTNESS
DESIGN
PERFORMANCE
COST
ELECTRIC ARCS
HALIDES
LIGHTING SYSTEMS
LUMINOSITY
MAINTENANCE
TUBES
USES
CURRENTS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ENERGY SYSTEMS
HALOGEN COMPOUNDS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
320100* - Energy Conservation
Consumption
& Utilization- Buildings