LIGHTING IN HOME

lamp The common name for a light source. LED (light emitting diode) A semiconductor light source that produces light by an electroluminescent process. Because LEDs are small, the light produced can be focused more easily than with larger light sources. LEDs produce very little heat compared with incandescent light sources, but they are very sensitive to excess heat and light output and their longevity can be diminished severely if they are allowed to overheat. lens A concave or convex piece of transparent material (usually glass) used to converge or diverge a beam of light through the process of refraction. In lighting, lenses are often used to focus a beam of light or to create a projected image. light meter (or illuminance meter) A device used to measure the quantity of visible light that falls on a surface. An illuminance meter will usually give results in foot-candles or lux. Illuminance meters are usually designed to respond to visible light in a similar way to the photopic response of the human visual system. As such, they do not give an absolute measure of luminous flux, but a figure weighted by the relative sensitivity of our visual system. lumen The SI base unit of luminous flux. It is a description of the quantity of light either produced by a source or incident on a surface. One lumen is the quantity of luminous flux emitted within a solid angle of one steradian emitted by a uniform light source that has a luminous intensity of one candela. luminaire A complete light fixture, including the light source, reflector, any lenses, and its gear housing. luminance The intensity of light produced by a luminaire or reflected from a surface. luminous flux The rate of flow of visible light energy. The SI (Système international) base unit for luminous flux is the lumen. lux The SI base unit of illuminance. It is equal to one lumen per square meter. nanometer A unit of length equivalent to one billionth of a meter. OLED (organic light emitting diode) A flat panel device that produces visible light by a process of electroluminescence. prism A transparent solid in the form of an extruded triangle. Typically made of glass or other optically clear material, the nonparallel geometry of the sides is responsible for the refraction of light. Triangular prisms can refract light to display the spectrum of colors contained within white light. Rayleigh scattering The scattering of visible light by particles suspended in a transparent medium. Typically this involves small particles in the atmosphere interacting with sunlight. In the upper atmosphere the blue end of the spectrum is scattered most strongly and so produces the appearance of a blue sky. receptor A light-sensitive cell that responds to electromagnetic radiation in the visible light spectrum.Homedesignq

LIGHTING IN HOME Photos

Click to Photo for Next Images of LIGHTING IN HOME


LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Homedesignq

LIGHTING IN HOME

Leave a Reply