dr-ebert
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- Mar 8, 2009
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@Rad86N, that calculation is correct... but only shows you the power consumed by the LD. Most of that is converted into heat. Only about 20-25% are emitted as laser light.
@oldscooliron, LDs (or LEDs in general) are current-driven, not voltage-driven - you set a certain current on the driver and don't worry about the voltage. I'm not sure which diode the 20x is - I know that the common drive current for the red LOC LPC-815 is ~420mA and for the bluray PHR-803T it's ~120mA (less for longer life).
I=U/R so min resistance means max current and vice versa.
@oldscooliron, LDs (or LEDs in general) are current-driven, not voltage-driven - you set a certain current on the driver and don't worry about the voltage. I'm not sure which diode the 20x is - I know that the common drive current for the red LOC LPC-815 is ~420mA and for the bluray PHR-803T it's ~120mA (less for longer life).
I=U/R so min resistance means max current and vice versa.