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Difference between UV/NIR and normal (visible) DMD

Nobuyoshi Arai44
Expert 2575 points

Hello,

 

I would like to know what is the difference between DMD for NIR/UV and normal DMD. Is there any difference in architecture or material?

It would be helpful if you can explain what you are changing for NIR DMD from normal (visible) DMD.

 

Best Regards,

 

Nobuyoshi Arai

  • 0
    TI__Guru 54430 points

    Hello Nobu,

    The primary difference between the two DMD types is the the window transmission.  The visible DMDs have an AR [anti-reflective] coating optimized to be very flat and transparent over the visible portion of the spectrum - 400 (or 420) to 700 nm with greater than 96% transmission per pass through the window.. 

    The NIR DMDs have an AR coating that is optimized to be fairly flat from 700 - 2000 nm with greater than 96% transmission per pass through the windows.

    To read more about this refer to this document:  Wavelength Transmittance Considerations for DLP DMD Window

    Fizix