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Originally Posted by Turtle
Interesting! I wonder if they reformed them into parabolic form? I didn't check the math yet, but with a long focal length - say 12" - not much curve is needed.
In the mean time, my oven - with a focal length of 10" - is ready to test & I have it illustrated below. Unfortunately it's raining here today & corrugated paperboard & white glue do notta lika the raina!  |
His pictures (from memory) had an array of like 10 disks wide by 15 high. He adjusted each one to focus the light to one point. From what I remember that was a hassle. I do not remember him saying whether he bent the disks or not.
