Need a photodiode that is sunlight protected and receives light via laser beam

[priyanka284]

is there any kind of photodiode avilable that is sunlight protected.that is it recieves light only thru the laser beam which im using as a transmitter n rejects all other light sources particularly sunlight.

 

[davidgrm]

Re: meproject

try making a filter from a combination of red and green perspex. Perhaps you can modulate the IR source. On the receiver you can then filter out un-modulated IR light. Do a search on IR remote controls to see how this is done

 

[priyanka284]

Re: meproject

if im modulating the ir signal at 38khz thn wat will be the max range b/w TXr n Rxr i can attain n cud u guide with the circuit for the same asap plz