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temperature compensated LED driver

temperature compensated LED driver

temperature compensated LED driver

(OP)
Hi guys:

I'm developing a colorimeter using a LED as a light source.  After building my first prototype and testing I've found that I'm getting slight changes in luminous intensity from the LED with changes in ambient temperature.  Before I try to develop a temperature compensated LED driver I was wondering if anyone new of any already on the market.  If not does anyone have any suggestions for a circuit.

Thanks,

Pete

RE: temperature compensated LED driver

Are you driving your led from a constant current source?

RE: temperature compensated LED driver

Wouldn't matter too much, the characteristics of the LED itself change with temperature.

A well-designed instrument uses both thermal stabilized LEDs and current source.

TTFN

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