As used in this chapter:
"Accent lighting"means any directional lighting that emphasizes a particular object or draws attention to a particular area.
"Floodlight"means a lamp that spreads light over a wide area.
"Full cut-off"means a luminaire that allows no direct light emissions above the horizontal plane (see definition of horizontal plane).
"Fully shielded"means light fixtures shielded or constructed so that no direct light emissions occur above the horizontal plane (see definition of horizontal plane).
"Glare"means stray, unshielded light striking the eye that results in discomfort glare, such as bright light causing squinting of the eyes; and/or disabling glare, such as bright light that reduces the ability to see into shadows.
"Horizontal plane"means a ninety degree angle measured from a vertical line from the bottom of the lamp or bulb extended to the ground.
"Kelvin"means the measure of the color temperature of a light source.
"Lamp or bulb"means the light-producing source installed in the socket portion of a luminaire.
"Light pollution"means general night sky glow caused by scattering artificial light in the atmosphere and resulting in a decreased ability to see the natural night sky.
"Light trespass"means light emitted by a fixture that directly illuminates beyond the property on which the fixture is installed.
"Lumen"means a measurement of light energy generated by a light source.
"Luminaire or fixture"means a complete lighting unit, including the lamps or bulbs, together with the parts required to distribute the light, to position and protect the lamps, and to connect the lamps to the power supply.
"Lux"means one lumen per square meter, a unit of luminance.
"Shielding"means a method to control light rays so as to avoid light trespass or glare.
"Spotlight"means any lamp that incorporates a reflector or a refractor to concentrate the light output into a directed beam in a particular direction.
"Watt"means a unit of electric power consumed by a lamp or bulb.
(Ord. 1552 § 1, 2011)