Abstract: The present invention discloses a lighting lamp (10), is used for emitting a plurality of lights with different color temperatures, and color rendering indexes of all the lights are larger than 90. The lighting lamp (10) includes a combination (100) of light sources and a driving module (200). The combination (100) of the light sources includes four LEDs with specific wavelengths. The driving module (200) is utilized to drive the LEDs to illuminate and to control energy distribution of luminous energy for the first, second, third and fourth LEDs, thereby dynamically adjusting to show the light with 9000K, 12000K and eight color temperatures defined by the ENERGY STAR.

Abstract: The present invention provides an illumination apparatus with gradually changeable color temperatures; the apparatus includes an illumination module and a control module. The illumination module is utilized to generate an illuminating light which has a plurality of different color temperatures. The control module is utilized to control a color temperature variation of the illuminating light so that a color difference in Duv corresponding to the variation of the illuminating light is less than 0.006 under the color temperature variation. Moreover, all color rendering indices of the illuminating light corresponding to the different color temperatures are larger than 90, thereby completely simulating the variation of sun.

Abstract: An illumination apparatus for optimal vision provided in the present invention includes an illumination module, a sensing module, and a computing module. The illumination module is utilized to generate an illuminating light with a plurality of different color temperatures for sequentially illuminating the illuminated object. The sensing module is utilized to sense a reflected light form the illuminated object. The computing module is utilized to calculate a saturation, chorma, and brightness of the illuminated object under the illuminating light by each color temperature, so as to obtain a plurality of preferred values corresponding to the color temperatures of the illuminating light, and for controlling the illumination module to illuminate by the illuminating light with the color temperature corresponding to a maximum among the preferred values. An illumination apparatus for optimal vision is further disclosed.

Abstract: A method for optimal selecting light-emitting diode (LED) light sources for full spectrum lighting is disclosed. The optimal selecting method includes the following steps: gathering a plurality of spectral power distributions corresponding to LED light sources; arranging the spectral power distributions to obtain a matrix A corresponding to the LED light sources; calculating a reconstructed coefficient, which is a least-square approximation of the matrix with respect to a spectral power distribution of a CIE standard illuminant; and selecting a best combination of the LED light sources according to the reconstructed coefficient. An LED light source assembly is also disclosed.