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TIDA-00554: visible light modification

frederick haibach
Prodigy 30 points
Part Number: TIDA-00554
Other Parts Discussed in Thread: DLP2010NIR

I understand that the DLP, grating and detector being used is optimized for NIR, but does anyone on this forum have experience with using the module with visible light (500-1000 nm)? A change in detector from InGaAs to Si and grating orientation/grating choice should be assumed in your response.

  • 0
    TI__Expert 8660 points

    Hello User,

    Welcome back to the E2E forums and we hope to assist you with your questions. 

    Please give our team some time to look into this question. Thank you for your patience.

    Regards,

    Alex Chan

  • 0
    TI__Expert 3755 points

    Hi Frederich,

    Yes, NIR DMDs can be used for 500-1000nm spectrum too. But do note that the DLP2010NIR DMD has coating with high window transmission efficiency over the 700-2500nm spectrum.Hence you might not get great transmission efficiency for 500-700nm spectrum.

    Regards,

    Akhil

  • +1 in reply to Akhil Guntumadugu
    Prodigy 30 points

    I would expect that the NIR antireflective coated glass cover would provide a "ghost" image at the 24 degree direction. If this angle does not fall within the FOV of the detector optics, then performance with an Si detector could be more than acceptable. The increased efficiency of the detector can offset the lost light. At this point, the discussion remains theoretical.