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DLPLCR9000EVM: Precaution measure while using in video mode.

Part Number: DLPLCR9000EVM

As we are required to keep the orientation of DMD mirrors changing for higher usable life the follow up question comes  what is the time frame for which we can keep a pattern on DMD without changing it at all so that it doesn't damages the board.

Thank you 

  • Hello Aditya,

    There is no datasheet specification for this, but it does depend again on array temperature.  

    What (time average) illumination power density do you anticipate on the DMD during the pattern you plan to hold on the DMD?

    Fizix

  • We can vary our average illumination power density between 1 to 4 mW/cm^2 and surrounding temperature will be 23 C.

    Thanks

  • Hello Fizix,

    Average illumination on DMD board will between 2 to 3 mW/cm^2 and surrounding temperature is about 22 C.

    Its a gentle reminder that we are waiting for your reply about a typical time frame for which we can hold a  pattern on board without the risk out losing its usable life.

    Thanks

    Aditya

  • Aditya,

    Sorry for the delay.

    Although there is no specification, our EVM's typically limit the lowest refresh rate to 6 - 10 seconds.  At the temperature you are running the data sheet chart (Fig 16 on page 35)  show low risk.  

    However, you should still send a mirror clocking pulse (reset) to the micro-mirrors every 6-10 seconds at the bare minimum, even if the pattern is not changing.  More often would be better.

    If your optics are designed with sufficient tolerance, you may not see any significant ripple in light output.

    Fizix