Color Temperature and Brightness
Color Temperature （Color Temperature Meter） Unite: Absolute Temprature (Kelvin, K) Unite of color temperature is absolute temperature K. When heat one black body radiator, for example Platinum, color of the black body radiator will change from Red, to Orange, Yellow, Green, Blue, Cyan, Purple gradually. We can use this character of black body to definition [...]
Basic Knowledge About Lighting
Item Symbol Unit Description Beam( Luminous Flux ) Φ (Lm) The sum of the light source issued every second, simple as glow amount. Light Intensity I (Cd) The strength of the light, the amount of radiation in a particular direction angle. Illuminance ( Luminance Meter) E (Lm/m2) The amount of radiation in unit area, that is [...]
Photometric Terms
Luminous flux: Φ, Lm Luminous flux is the sum total of the amount of light per second generated by the illuminant. Light intensity: I, cd The luminous intensity is the luminous flux from a point source emitted per unit solid angle in a given direction. A goniophotometer can be used for measuring light intensity. Illuminance: [...]
