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UV DMD

Peter Li66672
Prodigy 30 points

Hi, I am interested in using a DMD for high resolution UV stimulation in the range of 360-380 nm.  Is there any DMD available that is designed for this application, or else what are the limitations in this regime for the available DMDs?

 

Thanks!

Peter

  • 0
    TI__Prodigy 435 points

    Hello Peter,

    Thank you for your question and interest in the DMD for UV applications.  The .7" XGA DMD that is available in the Discovery 4100 kit was designed precisely for this type of application and wavelength range.  The kit itself was designed for high performance and high resolution.  For additional information, please see the following link:

    http://focus.ti.com/docs/toolsw/folders/print/dlpd4x00kit.html

    Regards,

    Raul

  • 0 in reply to raul55377
    Prodigy 30 points

    Thanks for the info.  I see from the window transmission literature here: http://focus.ti.com/analog/docs/memsmidlevel.tsp?sectionId=622&tabId=2455 that there is fairly good transmission with the UV window.  Is the window transmission the main issue, or do kits like the LightCommander have other components with poor UV properties?

    I also noticed that the Visible window has okay (>50%) transmission in the 360-400 nm range I'm interested in.  I think we can live with losing some of the light, but is the absorption of too much UV going to damage the components?  How much power @ 380 nm would it be possible to get through the LightCommander without damaging it?

     

  • 0 in reply to Peter Li66672
    TI__Guru 54430 points

    Peter,

    TI does not recommend using UV light with this DMD. 

    However, with that said, the LightCommander optics up to the DMD are reflective surface, so that the biggest consideration would be the lens.  Unfortunately I am unable to find anything published by Nikon on their lenses regarding transmissivity in the UV, so you would likely have to measure it.

    I hope this helps.

     

    Fizix