A specification of the apparent color of a light source relative to the color appearance of a reference source, measured in kelvin (K). The CCT rating for a lamp is a general indication of the "warmth" or "coolness" of its color. Lamps with a CCT below 3200 K are usually considered warm (more yellow) sources, whereas those with a CCT above 4000 K are usually considered cool (more blue) in appearance.
Many sources do not have the same characteristics as black body radiators. However, sources that have a mainly white light output can be given a correlated color temperature. This is defined as that temperature of the black body radiator that most closely matches that of the light source.
The perceived color of light expressed in Kelvin (K)
A description of the color appearance of a light source in terms of its warmth or coolness. The CCT relates the color appearance of the light emitted by the lamp to the color appearance of the reference material heated to a high temperature (measured on the Kelvin scale, abbreviated K). As the temperature rises, the color appearance shifts from yellow to blue. Thus, lamps with a low CCT (3000 degrees K or less) have a yellow-white color appearance and are described as "warm"; lamps with a high CCT (4000 degrees K or higher) have a blue-white color appearance and are described as "cool".
A term used for discharge lamps, where no hot filament is involved, to indicate that the light appears "as if" the discharge lamp is operating at a given color temperature. CCT generally measures the "warmth" or "coolness" of light source appearance using Kelvin(K) temperature scale.
The phrase use to describe the temperature at which a Planckian Black Body Radiator and an illumination sourceâ€(tm)s appear to match, usually specified in Kelvin (K).
Describes the color appearance of the light that is produced, in terms of its warmth or coolness. A low color temperature (3000 K and lower) describes a warm source, such as a typical incandescent lamp and a warm fluorescent lamp. A high color temperature (4000 K and higher) describes a cool source, such as a cool white fluorescent lamp.
A specification of the color appearance of a lamp, relating its color to that of a reference source heated to a particular temperature, measured in degrees Kelvin (K); CCT generally measures the "warmth" of "coolness" of light source appearance.
A specification of the apparent color of a light source relative to the color appearance of an ideal incandescent source held at a particular temperature and measured on the Kelvin (K) scale. The CCT rating for a lamp is a general indication of the warmth or coolness of its appearance. As CCT increases, the appearance of the source shifts from reddish white toward bluish white; therefore, the higher the color temperature, the cooler the color appearance. Lamps with a CCT rating below 3200 degrees Kelvin are considered warm sources, whereas those with a CCT above 4000 degrees Kelvin are considered cool in appearance.
A specification of the color appearance of a light source, relating its color to that of a blackbody radiator, as measured in Kelvins (K). CCT is a general measure of a lamp's "coolness" or "warmness."
Temperature of a black body (Planckian) radiator whose perceived color most closely matches a given stimulus seen at the same brightness and under specified viewing conditions.
Compares the warmth or coolness of light as it is produced, or the source as it appears to the viewer.
(also called Chromaticity) A description of the color appearance of the light emitted by a lamp, relating its color to the color appearance of the light from a reference source when heated to a particular temperature expressed in degrees Kelvin (K). A lower numerical value indicates a lamp that emits a yellow or orange light while a higher numerical value indicates a bluer light source. Some examples of typical CRI values: high pressure sodium - 1900 K; incandescent - 2800 K; halogen - 3000 K; cool white fluorescent - 4100 K; daylight simulating fluorescent - 5000K.
the "color" of the light given off by a lamp.