I am trying to maximize the amount of light that a red laser produces when it hits a cadmium photo cell.
I went from a photocell with a small area to one with about double the area.
I salvaged this from a laser printer and was wondering if that clear thing is a fresnel lens?
[IMG]Am also trying to figure what that clear led is.?
There is a drawing on the circuit board that looks like this.
LD1 A |-->|C
Thanks.