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General lighting can be reduced because task lighting provides focused light where needed. [1] Different strategies for task lighting exist. The three main approaches are: Localized average lighting, where a lamp supplies both ambient light and task light; Freely adjustable task light such as a gooseneck, balanced-arm lamp, or swing-arm light.
A gooseneck lamp. A gooseneck lamp is a type of light fixture in which a lamp or lightbulb is attached to a flexible, adjustable shaft known as a "gooseneck" to allow the user to position the light source without moving the fixture or item to be illuminated. [1]
Anglepoise model 1227 from 1935. A balanced-arm lamp, sometimes called a floating arm lamp, is a lamp with an adjustable folding arm which is constructed such that the force due to gravity is always counteracted by springs, regardless of the position of the arms of the lamp.
A wide variety of special light fixtures are created for use in the automotive lighting industry, aerospace, marine and medicine sectors. [2] [3] Portable light fixtures are often called lamps, as in table lamp or desk lamp. In technical terminology, the lamp is the light source, which, in casual terminology, is called the light bulb.
The White bulbs produce white light with a color temperature of 2700 K (warm); the White Ambiance bulbs produce white light of color temperature adjustable between 2200 K (warm soft white) and 6500 K (daylight). The White and Color Ambiance range can generate white light adjustable from 2000 K to 6500 K, and also adjustable colored light.
The Obie light is a small, compact, three bulb light apparatus whose source emits a broad, continuously adjustable pattern within a two-and-a-half stop range. The bulbs come in three basic settings ranging from low to high which can be finely adjusted within each level by disturbing the bulbs and its compound reflector. [3]