LED MODULE, LED ILLUMINATION MEANS, AND LED LAMP FOR THE ENERGY-EFFICIENT REPRODUCTION OF WHITE LIGHT

  • US 20160186937A1
  • Filed: 11/17/2015
  • Published: 06/30/2016
  • Est. Priority Date: 09/12/2007
  • Status: Active Grant
First Claim
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1. An LED module comprising:

  • at least one LED of a Group B, wherein the Group B of LEDs comprises one or more LEDs with a dominant wavelength in a value range of 380 nm to 480 nm;

    at least one LED of a Group R of LEDs, wherein the Group R of LEDs comprises one or more LEDs with a dominant wavelength in a value range of 600 nm to 640 nm;

    at least one LED of a Group P of LEDs which comprises one or more LEDs that excite a phosphor or a phosphor mixture and are from the Group B of LEDs, wherein emissions of the at least one LED of the Group P and of the at least one LED of the Group R and of the at least one LED of the Group B are additively mixed;

    a concentration of the phosphor or of the phosphor mixture of the at least one LED of the Group P being selected such that a photometric efficacy thereof, measured in lm/W, as a function of a CIE x-coordinate lies at a maximum or not more than about 20% below the maximum;

    the at least one LED of the Group P and the at least one LED of the Group R and the at least one LED of the Group B are formed and can be activated and controlled or regulated in such a way that white light is generated, and a color locus of the white light lies on or near Planck'"'"'s curve, wherein a color temperature of the white light can be adjusted steplessly within at least a partial range of a range of Plank'"'"'s curve that is located within a color space spanned by color loci of the LEDs of the Group P, the Group R, and the Group B and that a color rendition Ra8 of the white light amounts to at least 85.

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