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DLPLCRC410EVM: DLPLCR65NEVM mounting

Mei
Intellectual 480 points
Part Number: DLPLCRC410EVM
Other Parts Discussed in Thread: DLPLCR65NEVM,

Hi all,

I had  some questions about DLPLCRC410EVM+ DLPLCR65NEVM.

1. As the hinge-axis orientation is 45°, so the horizontal incident light will  be positioned diagonally relative to the overall array, reflecting in tilt upward and tilt down according to ‘ON’ and 'OFF' state. Do you have any suggestions about how to mount the DMD to make the reflect light only reflect in horizontal plane without flying up and down? 

2.When I stop the running patterns, and after loosing the SW3 button, I still can see the previous running pattern on the DMD, is this right? 

Thanks,

Mei

  • 0
    TI__Mastermind 43165 points

    Hello Mei,

    1.  As the hinge-axis orientation is 45°, so the horizontal incident light will  be positioned diagonally relative to the overall array, reflecting in tilt upward and tilt down according to ‘ON’ and 'OFF' state. Do you have any suggestions about how to mount the DMD to make the reflect light only reflect in horizontal plane without flying up and down? 

    Could you make a drawing of what you are asking about.  Typically the light comes in from 45° azimuth as measured from the long edge of the DMD and at 24° from the normal to the window/DMD array.  If you are mounting the DMD vertically on a mount, then rotating it -45° relative to the table should confine the incident beam, and both the reflected "on" and "off" state beams to the horizontal as well.  

    2.  When I stop the running patterns, and after loosing the SW3 button, I still can see the previous running pattern on the DMD, is this right? 

    This is correct - parking does not clear the memory underneath the micromirrors. It should be fainter than when actually running.  If you are using some kind of projection optics and this presents an undesired effect, then we recommend you load an all off pattern, and then "Park" (SW3) the micromirrors.

    Fizix

  • 0 in reply to Fizix
    Intellectual 480 points

    Hi Fizix,

    Thanks for your reply.

    1.I am sorry I do not know how to draw the light path, as light is not in the same horizontal plane , but from your answer, I think you understand my question correctly.

    2. Yes, after pressing SW3, the pattern is fainter.

    Thanks,

    Mei

  • 0 in reply to Mei
    TI__Mastermind 43165 points

    Mei,

    Thank you for marking this resolved.  Be aware that the park (float) command should not be used as a general standby.  Instead, if possible illumination should be turned off and the DMD run on/off at 50% duty cycle.

    The Park command/button should be used in preparation for powering down the system.

    Fizix