§ 8.02 Definitions

Canopy: Any overhanging shelter or shade or other protective structure constructed in such a manner as to allow pedestrians or vehicles to pass underneath.

Cutoff: The point at which all light rays emitted by a lamp, light source, or luminary are completely eliminated (cutoff) at a specific angle above the ground.

Cutoff Angle: The angle formed by a line drawn from the direction of light rays at the light source and a line perpendicular to the ground from the light source, above which no light is emitted.

Exterior Lighting: The illumination of an outside area or object by any man-made device that produces light by any means.

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.

Flood or Spot Light: Any light fixture or lamp that incorporates a reflector or a refractor to concentrate the light output into a directed beam in a particular direction.

Foot candle (FC): A unit of illumination produced on a surface, all points of that are one (1) foot from a uniform point source of one (1) standard candle.

Foot candle - Horizontal Measurement (HFC): The measurement of foot candles utilizing a direct reading, portable light meter mounted in the horizontal position.

Foot candle - Vertical Measurement (VFC): The measurement of foot candles utilizing a direct reading, portable light meter mounted in the vertical position.

Glare: Light emitting from a luminaire with an intensity great enough to reduce a viewers' ability to see, cause discomfort and, in extreme cases, cause momentary blindness.

Height of Luminary (including total eight): The height of a luminary is the vertical distance from the ground directly below the centerline of the luminary to the lowest direct-light-emitting part of the luminary. The total height is the height of the pole, including the base and any mounting arms or other attachments where the luminary is attached, as measured from the ground directly below the highest part of the pole or any of its attachments, to the top of the pole or luminary, whichever the case may be.

Illumination System: The totality of the equipment installed to provide exterior lighting on a developed property. The illumination system includes all building, canopy, pole and ground mounted luminaries including all wiring, circuitry, and other devices installed to create exterior lighting.

Lamp: The component of a luminary that produces the actual light.

Lamp wattage: The amount of power of a lamp expressed in watts.

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

Light, Indirect: Direct light that has been reflected or has scattered off of other surfaces.

Light Loss Factor: A factor applied to lamps, which estimates the lumen output of a lamp sometime after installation. (For example, a lamp with an initial lumen rating of 10,000, which has a light loss factor of 0.7, is estimated to put out 7,000 lumens. A lamp with an initial lumen rating of 10,000, which has a light loss factor of 1.0, is estimated to put out 10,000 lumens.)

Light Trespass: The shining of light produced by luminaries beyond the boundaries of the property on that it is located.

Lumen: A unit of luminous flux. One foot-candle is one lumen per square foot. For the purpose of this Section, the lumen value is the initial lumen output rating of a lamp.

Luminaries: A complete lighting unit consisting of a light source and all necessary mechanical, electrical, and decorative parts.

Luminaries, Cutoff Type: A luminaries containing elements such as shields, reflectors, or refractor panels that direct and cutoff a direct view of the light source at a cutoff angle.

Operating Hours: The period of time from one hour prior to opening to one hour after closing of a non-residential establishment.

Security Hours: The period of time from one hour after closing to one hour prior to opening of a non-residential establishment.

Temporary Exterior Lighting: The specific illumination of an outside area or object by any man-made device that produces light by any means, consistent with the requirement for Temporary Uses.