(a) Cut-off angle (of a lumenaire). "Cut-off angle (of a lumenaire)" means the angle, measured up from the nadir, between the vertical axis and the first line of site at which the bare source is not visible.
(b) Director light. "Director light" means light emitted directly from the lamp, off of the reflector or reflector diffuser, or through the refractor or diffuser lens of a lumenaire.
(c) Foot candle. "Foot candle" means a unit of illuminance equal to one lumen per square foot or 10.76 Lux.
(d) Flood or spot light. "Flood or spot light" means 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.
(e) Full cut-off or fully shielded lumenaire. "Full cut-off or fully shielded lumenaire" means a lumenaire constructed or shielded in such a manner that all light emitted by the lumenaire, either directly from the lamp or indirectly from the lumenaire, is projected below the horizontal plane through the lumenaire's lowest light emitting part as certified by the manufacturer.
(f) Glare. "Glare" means light emitting from a lumenaire with an intensity great enough to cause annoyance, discomfort, or loss of visual performance and visibility.
(g) Light trespass. "Light trespass" means the unwanted shining of direct light produced by a lumenaire beyond the boundaries of the property on which it is located. Light that is of an intrusive and objectionable nature.
(h) Lux. "Lux" means the SI unit of illuminance. One lux is one lumen per square yard. 10.76 lux is equal to one lumen per square foot or one foot candle.
(i) Recessed ceiling fixture. "Recessed ceiling fixture" means an outdoor lighting fixture recessed into a canopy ceiling so that the bottom of the fixture is flush with the ceiling.
(j) Temporary outdoor lighting. "Temporary outdoor lighting" means lighting that is applied temporarily for construction, safety, seasonal events, or public events.
(k) Uplighting. "Uplighting" means any light source that distributes illumination above a 90 degree horizontal plane.
(Ord. 11-O-1, passed 2-23-2011)