Using PhotoDiode as a lux meter

Thread Starter

bolitski

Joined Jun 17, 2008
2
Hi All,

I have this project that I want to measure 5 specific points in a light reflecting mirror.

I am not able to use a lux meter since a lux meter would measure the whole area. its a small area around 5 x 5 cm. I want to measure the 4 corners and the center to see if the light is equally distributed. So the only way is to make a custom circuit using a photo diode to read the luminosity of the area.

Attached is the ckt. Please tell me what you think. Or if somebody can give me an idea, would be much appreciated.
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