White light LED illuminating system with high light color quality and designing method thereof

Abstract

The invention belongs to the technical field of semiconductor illumination, and particularly discloses a white light LED illuminating system with the high light color quality and a designing method thereof. As the distance Duv from color coordinate points in CIE 1931 color gamut space to a blackbody line is optimized, the LED color mixture illuminating system having the high white light preference degree at the required color temperature is obtained, the color quality of a white light source can be improved, and the lamplight environmental effect can be improved; meanwhile, the required CRI and the high GAI can be guaranteed. The color temperature adjustment range of the white light LED illuminating system is 2,000 K to 10,000K, and the distance Duv from the color coordinate points to the blackbody line is larger than or equal to -0.1 and smaller than or equal to 0. By means of the Duv-optimizing color mixture designing method, the LED illuminating system with the high white light preference degree is obtained, and the white light LED illuminating system and the designing method can be applied to illuminating places with the high light quality requirements.

Description

technical field [0001] The invention belongs to the technical field of semiconductor lighting, and in particular relates to a white LED lighting system with high light and color quality and a design method thereof. Background technique [0002] Light quality has been paid more and more attention by human beings, especially for indoor lighting, such as shopping malls, retail stores, hotels, museums, homes and other indoor spaces, the requirements for light quality are far greater than the requirements for light efficiency. Good lighting quality and comfortable light environment are achieved by high-quality lighting effects. Lighting will affect people's emotions, cognition, impression of the entire interior space, and visual perception of illuminated objects. At present, there are many studies on dimming and color adjustment, but most of them only focus on improving the color rendering index and expanding the adjustment range of color temperature. In fact, improving the lig...

AI Technical Summary

Problems solved by technology

[0004] The color rendering index (CRI) is used to indicate the ability to restore the color of the illuminated object under the illumination of the light source, but there is no inherent relationship between the CRI index value of the LED and the visual effect, especially it cannot represent the effect of high color saturation light sources on high color saturation. Visual effects of object lighting

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