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Resolution of the input patterns and displayed patterns of 4500

Heming Wei
Prodigy 140 points
Other Parts Discussed in Thread: DLP4500

The discussion is here. (https://e2e.ti.com/support/dlp__mems_micro-electro-mechanical_systems/advanced_light_control/f/924/t/342506

size in diamond pixel.

  • 0
    Prodigy 140 points
    I am not sure how to calculate the pixel size of model and the printed structure, if I use it for printing? Which software can be used for preparing such images?
    Right now I just use the paint with a size (9855*6161.4) and then to resize (912*1140). This is not a good way to prepare the images.
    Is there a software can be used?
  • 0 in reply to Heming Wei
    TI__Mastermind 30600 points
    Heming Wei,

    I'm sorry - can you clearly state your question, application, and what your issue is?

    You're looking to use the DLP4500 for 3D printing?

    -Paul
  • 0 in reply to Paul Goedeke
    Prodigy 140 points
    I am sorry. There is a problem when I am posting.
    I use lightcrafter4500 for printing. But I prepare the square pixel image (912*1140) and unload for projecting. The size after projecting is not the same as the input. Because the DMD pixel is diamond. So, I want to know how to prepare the images, if I want to project or print some simple structures and want to calculate the size? Right now, I use the microsoft paint to prepare the structure in a ratio(9855x6161.4) and then resize 912x1140 pixel. Then this can be keep the original ratio of the image.

    There is a discussion about this please click this link :
    e2e.ti.com/.../342506
  • 0 in reply to Paul Goedeke
    Prodigy 140 points
    Hi Paul,

    There is an article to discuss the diamond pixel and square pixel. I prepare the image in square pixel and I know the size. When I input to DMD chip, how should I know the pixel size in diamond? Is there any software to prepare images in diamond pixel?
    The article is attached:
    www.kguttag.com/.../
  • 0 in reply to Heming Wei
    TI__Mastermind 30600 points
    Hi Heming Wei,

    Here is the advice that I would follow for creating images that are undistorted:

    * Create the desired image in a 16:10 aspect ratio in whatever software you like.
    * Resize to 912 x 1140, which will "compress" the image on the horizontal axis
    * Upload the image to the Lightcrafter. When projected, the ovals will be "re-distorted" back to circles by the diamond pixel configuration.

    In simple terms, you could think of the horizontal dimension of each pixel as being stretched to 2x it's size. When projected, the 912 x 1140 pixels become 1824 x 1140, which is 16:10 aspect ratio. The trick here though is to understand that this is just a model of what's happening, you don't really have 1824 pixels on the horizontal axis.

    There is no software that I am aware of that will help prepare images for diamond pixel projection.

    Does that help answer your question?
    Paul
  • 0 in reply to Paul Goedeke
    Prodigy 140 points
    Thanks Paul,
    This is what I want.

    Best,
    Heming