[Laser] Re: Non-imaging optics - again

[David Willmore]

> For an analog video signal, about 6MHz is required (current commercial TV).
> Taking a Sony laser link for TV, it is straight forward to extend the 
> range by replacing the LED light source in the camera with a laser diode 
> (or building a "repeater" from a Si detector and a laser diode). As was 
> pointed out the alignment is critical. But that is the "cost" of 
> concentrating the power into a narrow optical beam.  

I don't know if it is helpful or easier, but you can get very bright LEDs these
days.  I have some of the 1W Luxeon stars in Red-Orange and they're rated at 52
lumens.  Probably better than the little LED that this device was designed with.

Cheers,
David N0YMV