Patent ID: 9115869
Filing Date: 2015-08-25
Classification: C09K,F21K,F21V,H01L,H05B

Abstract:
1. A wavelength converting element comprising a polymeric material having a polymeric backbone, said polymeric material comprising a wavelength converting moiety, wherein said wavelength converting moiety is adapted to convert light of a first wavelength to light of a second wavelength, and wherein said wavelength converting moiety is covalently attached to said polymer backbone, wherein said polymeric material having a polymeric backbone comprises a random polyester copolymer comprising said wavelength converting moiety, said random polyester copolymer comprising at least three different repeating units of the following general formula n 1 , n 2 , n 3 , n 4 : wherein said repeating units are randomly distributed along the length of said polymeric backbone, wherein AA is selected from the following first group of aromatic moieties: wherein BB is selected from the following: —(CH wherein CC and DD are said wavelength converting moieties having one of the following general formula I, II, or III: in which