Information about Projection Lamps

Projection lamps use a built-in reflector to concentrate light in a specific direction. They are used in applications such as overhead projection, semiconductor assembly, medical/scientific instrumentation, and airport runways. They are also used to display movies, microfilm, and slides. Specifications for projection lamps include maximum overall length, light center length, rated average life, lamp power, mean lumens, and color temperature. Typically, maximum overall length is expressed in inches (in). Light center length is the distance between the center of the filament and a reference plane. Lamp labeling rules from the U.S. Federal Trade Commission (FTC) define light output in lumens (lm), a standard unit of measure for the luminous flux or quality of light. Rated average life is the number of burning hours for median life expectancy. Lamp power is the wattage (W) of the lamp. Color temperature measures the visual “warmth” or “coolness” of the light from incandescent lamps. Higher values are associated with lights that are whiter in appearance.

Products & Services Related to Projection Lamps

Fluorescent Lamps

Fluorescent lamps are high-efficiency lamps that use electrical discharge through low-pressure mercury vapor to produce ultraviolet (UV) energy, which is then transformed into visible light.

Halogen Lamps

Halogen lamps are high pressure incandescent lamps containing halogen gases such as iodine or bromine, which allow the filaments to be operated at higher temperatures and higher efficacies.

Heat Lamps

Heat lamps are also known as infrared emitters, infrared bulbs, infrared tubes, or infrared lamps. Heat lamps differ from illuminating lamps in their low filament temperature, resulting in much less light and more infrared radiation.

High Intensity Discharge Lamps

High intensity discharge lamps (HID) contain compact arc tubes, which enclose various gases and metal salts, operating at relatively high pressures and temperatures. HID lamps are often used as UV light sources.

Incandescent Lamps

Incandescent lamps generate light by passing an electric current through a thin filament wire (usually of tungsten) until the wire is extremely hot.

Lamps, All Types

Lamps are light sources that emit incoherent light for illumination. There are many different types of products. Examples include fluorescent lamps, halogen lamps, heat lamps, incandescent lamps, LED lamps, projection lamps, spectral lamps, and stage lamps. Specialized and proprietary lamps are also available.

Stage Lamps

Stage lamps are used for stage, studio, or television lighting. They are often made of quartz instead of glass to provide higher pressure ratings, higher melting temperatures, and more energy-efficient designs.