Color temperature and brightness

K color temperature to absolute temperature, is a standard blackbody (such as platinum) heating, when the temperature rises to a certain level by the beginning of the color red, orange, yellow, green, blue, indigo pigment (blue), violet, gradually changing, Such changes in the optical properties using color, light source colors and bold hue in the light, We will meet as the temperature of the light source color temperature. Around 3000K color temperature, color-2a. Above 5000K color temperature, color-Pianla. Different color temperature of light, with different lighting and visual effects. Color temperature of light are different in different colors corresponding map. Different people have different wavelengths caused eye color perception, red, orange, yellow, green, blue, indigo pigment (blue), violet. With changes in the wavelength sensitivity of the eyes, strong change. For example, in good lighting conditions. eyes on the 550 nm wavelength light (578.2 nm) is the degree of sensitivity of the red or blue 20 times. This is the reason why most of the roads and rear fog lamps for power use yellow light an important reason. Color temperature measurement is the standard color temperature, light intensity measurement is not. The color temperature of 2300K halogen lamp can 7000K; HID lights from the color temperature of 4200K color temperature higher than 8000K; lights. It fog and rain penetration worse (less bright). Manufacturers, such as Philips, the highest since 6000 only produce color temperature of the arc-lights. Following is a different color temperature performance :

Light color temperature

Optical effects

3000K yellow light, strong penetration

4200K white with yellow, the original cars xenon lights

5000K all-white color temperature maximum EU regulations

6000K all-white and slightly blue

6500K under the sun during the day

7000- obviously 8000K white blue

Blue above 8000K. Poor penetration recommend exactly the most white color temperature of about 6000 turned slightly blue color temperature, the eyes of the people to accept, not fatigue, improve security and halogen lamp sites.