Interior Lighting for Designers

INCANDESCENT LAMPS Figure 6.3Incandescent lamp bases at one-half actual size. The arrow indicates the point from which the light ...

temperature. Occasionally the wire is straight, but usually it is coiled to pack more length into a small envelope, concentratin ...

Incandescent lamps are usually sold by wattage, but a watt is not a measure of light—it is a measure of power consumed. With ele ...

INTERIOR LIGHTING FOR DESIGNERS Figure 6.5A-shape lamps at one-half actual size. Maximum Overall Length (MOL): maximum end-to-en ...

are used in recessed luminaires, the upward light emitted by the lamp is redirected in a downward direction by a secondary refle ...

R lamps Inreflector(R) lamps, the bulb is shaped into a reflecting contour; the inner surface is coated with vaporized silver. T ...

cent R lamp with a well-designed reflector can be more efficacious than the most effi- cient, tungsten-halogen PAR lamp in a lig ...

ers almost its full light output throughout its life (figure 6.10). In order for this self-cleaning cycle to occur consistently, ...

each end of the lamp. Their bulbs are of small diameter: T2, T2½, T3, T4, T6, and T8. Wattages range from 45 W to 2,000 W. Halog ...

Thealuminum reflector(AR) lamp con- sists of a prefocused axial filament lamp and faceted aluminum reflector that form an optica ...

tor, MR lamps are produced with beam- spreads from 7° (very narrow spot) to 60° (wide flood). MR lamps are available in both 1^3 ...

A colored or filtered incandescent lamp produces colored light by starting with “white” light and filtering out the undesired po ...

Dip coatings of transparent colors that are given an overcoat of acrylic are an improvement over the sprayed lacquers; they yiel ...

produces its specific color by transmitting only the desired wavelengths of light, with minimal heat absorption; light of other ...

Discharge Lamps In electric discharge lamps, light is produced by the passage of an electric current through a vapor or gas, rat ...

age loss is greater, more heat is developed, and lamp efficacy is lower. Neonis a particular kind of small-diame- ter, cold-cath ...

The superior efficacy and greater light output make the hot-cathode (“fluorescent”) lamp more suitable in almost all lighting ap ...

The earliest fluorescent lamps were of thepreheatkind (figure 7.4). Preheat lamps have cathodes that must be heated electri- cal ...

to strike the arc instantly. This is a violent action that requires cathodes able to with- stand the jolt of instant starting. B ...

instant start lamps of comparable length. Rapid-start ballasts are less expensive, smaller, and have lower power loss than insta ...