Definitions. As used in this subsection, the following terms shall have the meanings indicated:
CUTOFF FIXTUREA light fixture that restricts the amount of light emission by shielding parts of the lamp. A cutoff or semicutoff design allows a restricted amount of light emitted above the horizontal plane running through the lowest point on the luminaire.
FIXTUREThe assembly that holds the lamp in a lighting system. It includes the elements designed to give light output control, such as a reflector or refractor, the ballast, housing and the attached parts.
FOOTCANDLEThe basic measuring unit of illuminance. Footcandle measurement is taken with a light meter with CIE photopic (human eye response curve). One footcandle is approximately equal to the illuminance produced by a light source of one candela in intensity, measured on a surface at a one foot distance from the source. Horizontal and vertical footcandle measure the illumination striking a horizontal plane or vertical plane, respectively.
FULL-CUTOFF FIXTUREA light fixture that cuts off all upward transmission of light above an angle of 90º from the horizontal plane at the lowest part of the luminaire.
FULLY SHIELDED FIXTUREA luminaire constructed and installed such that all light emitted, either directly from the lamp or a diffusing element, or indirectly by reflection or refraction from any part of the luminaire, is projected below the horizontal. It is the same as a full-cutoff luminaire, but without any restrictions on light distribution below the horizontal plane.
GLAREDiscomfort experienced by an observer with a direct line-of-sight to a light source which often results in visual impairment due to an intensity great enough to reduce the viewer's ability to see.
LIGHT TRESPASSLight projected onto a property from a fixture not on that property.
LUMENA measure of the brightness of the illumination exiting a bulb, provided by a manufacturer. One footcandle is one lumen per square foot.
LUMINAIREA complete lighting fixture, including the lamp, housing, ballasts, and photocells, less the support and mounting assembly.
TEMPORARY OUTDOOR LIGHTINGSpecific illumination of an outdoor area or object by any man-made device located outdoors that produces light by any means for a period of less than seven days, with at least 180 days passing before being used again.