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.

  • Resolved

DLP4710: Can DLP DMD act as an optical shutter for a higher resolution image?

Prodigy 145 points

Replies: 26

Views: 2086

Part Number: DLP4710

What we want to essentially do is have a DLP4710 in an image plane of an 8K by 4K image and use the DMD to selectively block parts of the original image. I don't see why this wouldn't be possible as each micromirror is still just a mirror and if facing the other way will be blocking that part (4x4 pixel grid) of the original image. However I do see an issue due to the gaps between the pixels and diffraction from the DMD.

Those involved with the DLP development and aware of the unique features of this system, can you give us suggestion if what we want is possible, what we should and shouldn't expect to work and what potential issues?

Thank you.

  • In reply to Vivek Thakur:

    Thank you. Keep me updated.
  • In reply to Ronald Walden:

    Hi Ronald,
    No other update except ya typical diffraction through DMD mirrors.
    regards,
    Vivek
  • In reply to Vivek Thakur:

    Hello.

    "except the typical diffraction through DMD mirrors."

    such as?
  • In reply to Ronald Walden:

    Hi Ronald,

    I have uploaded a PDF file explaining the difference between reflection through plane mirror and through DMD.  The DMD is not exactly plane mirror in your use case, there is some diffraction effects. Hope this explains.DMDdiffraction.pdf

    regards,

    Vivek

    DMDdiffraction.pdf

  • In reply to Vivek Thakur:

    I think if we make the flat state the one which reflects the light to the lens and the On state the one which deflects it from the lens instead we will not have this difference. But that said the issue in your illustration seems to be the different angle the beams will be reflected rather than illustrating diffraction.
    Thanks.
  • In reply to Ronald Walden:

    Hi Ronald,
    I was not trying to highlight different angle, my intent was to show a difference between a DMD and plane mirror. The DMD does acts like a diffraction grating with tilted mirror.

    The DMD is a bi-state device - ON and OFF. The flat state is intended for non-operation and can not be controlled for application.

    regards,
    Vivek

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.