Dissipation probably. You would need a transparent conductive transparent
heat sinc?

Brian

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From the Sofa of Brian Gaff Reply address is active
"Jim Hawkins" wrote in message
...
Looks like we won't be getting LED lamps with a decent
light output - say 2000 or 3000 lumens or so - until the
manufacturers learn how to make LED chips in larger sizes.
Are there problems in doing this ?

Jim Hawkins