This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DLP7000UV: Is it possible to a DMD to work on 240 -280 nm UV region?

Part Number: DLP7000UV

Hi Forum,

I´m working on a application for the DMD´s that will enable a camera to look at different regions of the electromagnetic spectrum.

The UV DMD´s are positioned on the UVA part of that spectrum, from 363 to 420 nm according the dlpa060 paper on TI site.

My question is twofold: first if is the coating applied on the glass that filters light to that 363-420 range? or second is the glass spec that is tuned to that range?

Depending on the answer, is it possible to remove the AntiUV coating form the glasses?

The DMD´s can function without the protective glass cover?

The technical problem we try to solve is detection of corona effect on electrical equipment and those effects happen to exist on 240 -280 nm spectrum region.

Thanks for any advice/help!!

Carlos

  • Hello Carlos,

    The coating on the glass is tuned to help the transmission to extend further into the UV.  It is actually better than uncoated glass which naturally falls of in transmission as the wavelengths get shorter.  By 300 nm the transmission of glass is very very low.  Please see this document:

    http://www.ti.com/lit/pdf/dlpa031

    Regarding removing the glass this is not supported and the mirrors will not continue to operate.  The DMD has proprietary material inside which is carefully engineered to ensure reliable operation of the micromirrors.  Removal of the window will cause the loss of the proprietary material and the device will fail.

    Best regards,

    Fizix

  • Hello Fizix,

    First of all, thank you for your quick reply to my post!!

    Secondly, I apologize for my delay in this answer.

    I do read the dlpa031 and as such it seems that , at this moment, there is no way to acquire signals on the UVB and UVC range of the spectrum using the DMD´s from TI.

    Can I put a request for the enginneering group to consider evaluating the market size for such apps?

    Once again many thanks for your time and attention,

    My best,

    Carlos

  • Carlos,

    Thank you for the input, we always value input from the community. We do keep track of these kinds of requests and periodically evaluate if there is enough demand for a particular product to justify a new development.

    Best regards,

    Fizix