On Sunday, April 10, 2016 at 12:17:55 PM UTC-4, wrote:
Thank you very much. All the links look promising.

The LED Supply link has a luminous intensity of 20 mW. I am not sure if this is same as Irradiance, which I need to be 220 mW/sr.

Nonetheless, both Jameco and LED supply are good sources and I will explore more.


Well, you have this one, with an irradiance of 550mW/sr, more than you need at a princely $0.36 each.

http://www.mouser.com/Search/Product...q6Xyji1A%3d%3d

Peter Wieck
Melrose Park, PA