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Why the camera can detect this light of TV remote ?What does this detection indicates ?

Answer»

You'll find that CCD sensor arrays can detect near INFRARED upto MAYBE 1,100nm.
Infrared light goes to 1,000,000 nm. That's a lot of IR not sensible by a CCD camera considering that IR starts at about 700nm.

CCD sensitive : 700nm to 1100 nm (VARIES)

CCD insensitive : 1100nm to 1000000 (varies ). ...

HOPE it will be helpful.......

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