> On Mar 11, 2008, at 1:33 PM, David VanHorn wrote:
>
>   
>> Overall efficiency of watts in from the battery vs image produced is
>> what I'm trying to optimize.
>>     
>
> I thought semiconductor lasers were VERY inefficient compared to
> todays LEDs, in terms of the overall amount of power emitted as light.
>
> BillW
>
>   

I've used laser diodes that at 195A@1.9V produce 200W @808nm which is a 
pretty impressive 53% efficient.
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