For the purpose of this subchapter, the following definitions apply unless the context clearly indicates or requires a different meaning.
FIXTURE. The assembly that holds the lamp (bulb) in a lighting system. It includes the elements designed to give light output control, such as a reflector (mirror) or refractor (lens), the ballast, housing, and the attachment parts.
FOOT CANDLE. A unit of measure for luminance. A unit of luminance on a surface that is everywhere one foot from a uniform point source of light of one candle and equal to one lumen per square foot.
FULL-CUTOFF (FCO). A light fixture which cuts off all upward transmission of light.
GLARE. Discomfort experienced by an observer with a direct line of sight to a light source which often results in visual impairment.
HID LIGHTING (HIGH INTENSITY DISCHARGE LIGHTING.) A family of bulb type including mercury vapor, metal halide, or high pressure or low pressure sodium, which glow when an electric current is passed through a gas mixture inside the bulb.
HORIZONTAL (OR VERTICAL) FOOT CANDLES. The amount of light striking a vertical or horizontal plane.
INVENTORY OF LIGHTING. A list of lamps indicating the bulb type, bulb wattage, and manufacturer through which the rated lumens can be determined.
LIGHT SOURCE. The bulb and lens, diffuser, or reflective enclosure.
LIGHT TRESPASS. Light projected onto a property from a fixture not located on that property.
LUMEN. Measure of brightness of the illumination exiting a bulb, provided by fixture manufacturer.
LUMINAIRE. The complete lighting unit, including the lamp, the fixture, and other parts.
NON-CUTOFF. A light fixture which does not cut off all upward transmission of light.
PHOTOMETRIC PLAN. A plan used for an approval process or construction indicating the number, location, type of luminaire, and manufacturer’s specification data, on proposed site lighting, both pole- and building-mounted.
(Ord. passed 2-3-2011, § 2.26.100)