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DMD INTEGRATION WITH PHOTO DETECTOR.

karthiraj s
Prodigy 40 points

Hello,

         I am working with dmd d4100 explorer for implementation of single pixel camera.I am trying to focus an image on dmd. Also I am trying to focus the reflected image from dmd to a photo detector. So what is the photo detector i have to use, is there any specific part number for the photo detector or any special photo detector?

         Kindly can anyone guide me on how to fed the output from photo detector to dsp and also what kind of algorithm can be implemented to retrieve the original image.

        I am in need of guidance for practical implementation.

  • 0
    TI__Guru 54320 points

    Hello Karthiraj,

    There is no particular photdetector that has to be used.  That is your choice, depending on the wavelength range you wish to use.  We have used photodiodes from Melles Griot, Newport, ThorLabs, and many others.  If you use a photodiode you will need a transimpedance amplifier and a Data Aquisition device to read the voltage. 

    Since you will likely want to do high speed measurements, you may want to buy an off the shelf photodetector device that you can communicate over USB to collect data.  If you wish to trigger reads you will need to set up the GPIO output bits in the Explorer and use it to trigger reads.  This is explained in the D4100 Explorer Manual available on the DLP Extranet.  If you do not have access the the Extranet, please request it from the reseller that you purchased the D4100 kit from.  They screen applicants to ensure compliance with U.S. import/export regulations.

    Fizix