Hi to all,
am starting a project where I want to detect the reflection from a laser by means of photodiodes or phototransistors. The idea is to point a laser pen dot at an object and have photodiodes or transistors pick up the reflected light from the object --- call it the "target".
This would be like a toy version of the military laser target designation and laser target seeking systems.
The specs for photodiodes and transistors are in terms of luminance required, which is fine, but I have no clue what diatances may correspond to a given luminance -- or even if the reflection from a laser dot at point blank range has sufficient luminance to be detected at all.
So, would like to know if what I have in mind is feasable at all -- perehaps someone on the forum has done a similar project? Any advice or comment would be very much appreciated.
Thanks, Sean
am starting a project where I want to detect the reflection from a laser by means of photodiodes or phototransistors. The idea is to point a laser pen dot at an object and have photodiodes or transistors pick up the reflected light from the object --- call it the "target".
This would be like a toy version of the military laser target designation and laser target seeking systems.
The specs for photodiodes and transistors are in terms of luminance required, which is fine, but I have no clue what diatances may correspond to a given luminance -- or even if the reflection from a laser dot at point blank range has sufficient luminance to be detected at all.
So, would like to know if what I have in mind is feasable at all -- perehaps someone on the forum has done a similar project? Any advice or comment would be very much appreciated.
Thanks, Sean