§ 1702. Definitions.

Direct light: Light emitted directly from the lamp, off of the reflector or reflector diffuser, or through the refractor or diffuser lens, of a luminaire.

Fixture: The assembly that houses the lamp or lamps and can include all or some of the following parts: a housing, a mounting bracket or pole socket, a lamp holder, a ballast, a reflector or mirror, and/or a refractor or lens.

Footcandle: A unit of illuminance 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. One footcandle (FC) is the equivalent of 10.76 Lux (1 Lux = 0.0929 FC).

Full cutoff luminaire: Outdoor light fixtures shielded or constructed so that no direct light rays are emitted by the installed fixture at angles above the horizontal plane.

Glare: Light emitting from a luminaire with intensity great enough to reduce a viewer's ability to see, and in extreme cases causing momentary blindness, or that causes annoyance or discomfort.

Illuminance: The area density of the luminous flux incident at a point on the surface. It is a measure of light incident on a surface, expressed in lux or footcandles.

Isofootcandle plan: A site plan of a proposed development showing proposed outdoor illuminance with a series of isofootcandle lines that join points on a surface where the illuminance is the same.

Light trespass: The shining of light produced by a luminaire beyond the boundaries of the property on which it is located.

Luminaire: A complete lighting system, including a lamp or lamps and a fixture. This term shall be interpreted broadly as applying to all outdoor electrically powered illuminating devices, outdoor lighting or reflective surfaces, lamps and similar devices, permanently installed or portable, used for illumination or advertisement.

Outdoor lighting: The night-time illumination of an outside area or object by any man-made device located outdoors that produces light by any means.

Safety lighting: Exterior lighting that involves ensuring proper levels of illumination to provide safe working conditions, safe passage, and the identification of outdoor hazards.

Security lighting: Exterior lighting installed solely to enhance the security of people and property.

Wallpack: A wall-mounted luminaire.

(Ord. No. 17-003 , § 1, 10-2-2017)