[Laser] Laser Digest, Vol 71, Issue 6

[Professor Barry Chambers]

Does anyone know if there is a UK stockist for the Phlatlight LEDs?

The Works, a UK based chain of remaindered book-shops has rigid A4 
Fresnel lenses for 99p. These have a focal length of about 350mm, as 
measured using my 3-laser ray box. I've assembled one with a Lambertian 
Luxeon III plus a narrow beam "torch" lens and it seems to work OK with 
Mike, VK7MJ's Tx electronics.

I intend to make up a couple of wooden "lathe cross slides" as shown in 
the 2009 DUBUS articles so that I can adjust the position of the source 
or detector focus with respect to the Fresnel. I'm interested in further 
details of the fold-up Tx-Rx.

73

Barry , G8AGN