For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
FOOT-CANDLE. A quantitative unit of measure referring to the measurement of illumination at a single point. One FOOT-CANDLE is equal to one lumen uniformly distributed over an area of one square foot.
FULL CUTOFF ANGLE. The angle formed by a line drawn from the light source and a line perpendicular to the ground from the light source, beyond which no light is emitted. (See Figure 1 in § 157.288.)
FULLY SHIELDED. Fixtures that are shielded in such a manner that light emitted by the fixture, either directly from the lamp or indirectly from the fixture, is projected below a horizontal plane running through the lowest point on the fixture where light is emitted. This means that a FULLY SHIELDED fixture is one used in a way that allows no direct or internally reflected light to shine above the fixture. (See Figure 1 in § 157.288.)
INITIAL LUMENS. The lumens emitted from a lamp as specified by the manufacturer of the lamp.
LAMP. The component of a luminaire that produces light. A LAMP is also commonly referred to as a bulb.
LUMEN. A standard unit of measurement referring to the amount of light energy emitted by a light source without regard to the effectiveness of its distribution.
LUMINAIRE. A complete lighting unit consisting of a lamp or lamps together with the components designed to distribute the light, to position and protect the lamps, and to connect the lamps to the power supply. A LUMINAIRE is also commonly referred to as a fixture.
OUTDOOR LIGHT. Outdoor artificial illuminating devices, outdoor fixtures, lamps, or other fixture devices, permanent or portable, used for illumination, direction, or advertisement. Such devices shall include, but are not limited to, search, spot, or floodlights for: buildings and structures including canopies and overhangs; recreational areas; parking lot lighting; landscape lighting; signs, including billboards; and display and service areas.
OUTDOOR LUMINAIRE. A luminaire which is permanently installed outdoors including, but not limited to, devices used to illuminate any site, structure, or sign.
PHOTOMETRIC PLAN. A point by point plan depicting the intensity and location of lighting on the property. (See Figure 4 in § 157.288.)
TEMPORARY. Not used more than seven consecutive days and not used more than 15 days in any calendar year.
(1998 Code, § 66-351) (Ord. passed 9-5-2017)