High luminous efficiency and high color is LED key

At present, in all the fields of illumination, color rendering has been paid more and more attention. In particular, the indoor environment, the higher the color requirements. Such as low pressure sodium lamp luminescence efficiency close to 200lm/W, but the monochromatic yellow light makes it can only be used for road lighting and other occasions like little. The United States Department of energy (DOE) on the color index for LED indoor lighting lamp has been from the original 70 (2007, 8) to improve the provisions of the recent more than 80 (2009.12). In the domestic lighting design standards, but also the office and hotel in the color rendering index should be more than 80 of the requirements.

The quality of a light source selection, high luminous efficiency and high color is led key. Shanghai Lighting Association chapter HAICONG director believes that the high luminous efficiency and high color index and meet the lighting environment or the lighting operation object is the best white white. The controversy over the LED and the traditional source of competition and the replacement market who is the master problem, chapter HAICONG chairman also has its own unique view. He believes that in the current technical conditions, LED high efficiency means high luminous efficiency than the traditional light source, because now the traditional light source in different occasions to act as the protagonist, if want to than the level, can the traditional light source into the lamps with high luminous efficiency as a benchmark, the LED lamp into the lamp post for comparison, is the good method of.DOE is in the current document will compare the common light bulb, MR16 and fluorescent lamp; as for the color index, the color index of different occasions is a value set by people, no provision for some occasions, such as outdoor lighting; some have made detailed provisions, in particular a lot of requirements for indoor lighting, for example Home Furnishing environment color index is more than 80, has become a common requirement. Therefore, there is a higher efficiency than conventional light sources (or made lamps have higher light output than traditional lamps) and color rendering index greater than 80 seems to be a measure of indoor lighting with white LED.

LED to enter the lighting industry trend is clear, high luminous efficiency and color rendering index of good products, has emerged in some indoor and outdoor lighting, showing good results and strong momentum of development. Therefore, when we look at the effectiveness of the LED must be concerned about its color rendering index, only speak light effect, no color rendering index is of no practical significance.