So, I basically want to know the range of the IR light that comes from a CD reader/writer (KSS-213C). I used an IR sensor(IR Photodiode) to detect the light that comes from the pickup reader, but until I go very close to the lens, I'm not getting any reading. (Following image source: google.com)
Also, if I remove the lens, will the range of the IR laser increase?
If you need any other information, I will add it along later.