Patent ID: 9599313
Date: 2017-03-21
CPC Classifications: C09K,F21K,F21S,F21V,G02B,Y02B

Claim:
1. An arrangement for generating white illumination light, comprising: an excitation light source emitting an excitation light beam having blue light; a reflective coating that divides the excitation light beam into a portion of reflected blue light and a portion of entering blue light; a converter for converting the entering blue light from the excitation light source into yellow light and having a first converter surface where the entering blue light from the excitation light source enters, and a second converter surface opposite to the first converter surface; and a support of the converter for aligning the converter in a remission geometry in an angle relative to the excitation light source and in a direction of illumination; wherein the reflective coating is on the first converter surface for adjusting the portion of reflected blue light relative to the portion of the entering blue light; wherein the converter has a thickness as measured from the first converter surface to the second converter surface at the support sufficient so that substantially all the entering blue light is converted into the yellow light.