Texas_Ace BLF Calibrated Lumen tube / Sphere No math skills needed - Several spheres still available

[JasonWW]

If anyone wants to see some cool home made integrating spheres, Djozz has built several. He’s done some very scientific work.

djozz tests

I start this thread, or actually just a post, to make everything that I tested the last few years and posted on BLF, a bit more accessable (yesterday I tried to put everything in my sig-line but that just looks ugly, so now the sig-line just contains a link to this post). If I do more tests in the future, I will add links to them in this post. As a general disclaimer, the minimum that I try to achieve in my tests is a good impression of what is going on with a led, spring, or whatever it is tha…