公开(公告)号：EP2094814A2

公开(公告)日：2009-09-02

申请号：EP07849453.1

申请日：2007-12-12

申请人： Koninklijke Philips Electronics N.V.

发明人： DONNERS, Maurice A. H. ,  JALINK, Cornelis J. ,  VAN DIJK, Gerardus A. R. ,  FISCHER, Vincent ,  VAN SPRANG, Hans

IPC分类号： C09K11/77 ,  H01J61/00

CPC分类号： C09K11/7734 ,  H01J61/125 ,  H01J61/35 ,  H01J61/44

摘要： The invention relates to a light source for generating light having a spectral emittance in at least a part of the range of 380 nm to 780 nm, the light having a spectral power distribution E(λ) as a function of the wavelength λ, and a general color-rendering index Ra, wherein the ratio of the integral spectral power distribution over a first range of 575 nm ≤λ ≤650 nm to that of a second range of 380 nm ≤λ ≤780 nm is given by the relation: and wherein Bb, ≤ 0.15 and Ra ≥ 20. The light generated by the light source has a relatively small disturbing effect on migrating birds, while it still allows acceptable visibility for human beings.