Hi,
I am new in a project where we have to measure the distance from a laser to an object. My workmates have told me that a laser is conducted to an optical fiber ended with a high numerical aperture lens. The light is reflected by the surface of the measured object, and conducted again by the optical fiber to a photodiode. The signal from the photodiode is conducted to an A/D conversor and after that we receive the info in a PC.
It appears that to get the distance to the object we have to process the intensity of the signal received from the photodiode, but I don't know what could we do with the intensity to get the distance. I have studied Optical Communications at the career and don't remember anything similar, does anybody know how could we get the distance to the object??
Thanks in advance!
I am new in a project where we have to measure the distance from a laser to an object. My workmates have told me that a laser is conducted to an optical fiber ended with a high numerical aperture lens. The light is reflected by the surface of the measured object, and conducted again by the optical fiber to a photodiode. The signal from the photodiode is conducted to an A/D conversor and after that we receive the info in a PC.
It appears that to get the distance to the object we have to process the intensity of the signal received from the photodiode, but I don't know what could we do with the intensity to get the distance. I have studied Optical Communications at the career and don't remember anything similar, does anybody know how could we get the distance to the object??
Thanks in advance!