Re: Large LED bulbs for film lighting?

Bill Bowden wrote:

I don't think you can get as good a white color with LEDs as with
incandescents. White LEDs tend to be on the blueish side.
(snip)
Most white LEDs are really blue LEDs thinly coated with a phosphor that absorbs blue light and emits yellow. The combination of blue (that gets past the phosphor) and yellow fool the eye into seeing roughly white. But there are big chunks of the visible spectrum missing, specifically green and red. So green or red objects (things that absorb blue and yellow, but reflect green or red light) look off color and dim when illuminated by white LEDs.
.

Relevant Pages

  • Re: LED Xmas lights
    ... >>> large capacitor that'll work on 180V or so)? ... I still don't understand WHITE LEDs (there is no ... absorbs some of the blue light and fluoresces yellow light. ... The phosphor ...
    (alt.home.repair)
  • Re: LED "searchlight" signals
    ... White LEDs are actually blue LEDs with the substrate (the ... semi-conducting bit that emits the light) coated in phosphor that ... appearance of white LEDs - a small mount of the blue light filters ... through the white emitting phosphor. ...
    (uk.railway)
  • Re: Unusual Characteristic [LOL]
    ... >Are they implying more variation when compared to other LEDs? ... The joke is that white LEDs are simply blue LEDs with an additional yellow ... Part of the blue output pumps the phosphor to emit yellow. ... This is why colour rendition of white LEDs is so bad. ...
    (sci.electronics.design)