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DLP6500FLQ: pixel size

Part Number: DLP6500FLQ
Other Parts Discussed in Thread: TIDA-00293,

Dear TI support,

I am a student and I am doing some research on DLP 3D printers. I was trying to calculate the pixel size for a DLP6500. After reading some documents on your website, I found the file 'TIDA-00293 DLP 3D Printer Test Data ' from August 2014. http://www.ti.com/lit/ug/tidu503/tidu503.pdf


In this file an equation is given to calculate the pixel size of the printed object: PixelSize = (EnvelopeWidth) / ((DMDRowCount)*SQRT(2))

On other websites the square root of 2 is not present and I was wondering why it is in your equation. The equation there is made for diamond pixels. As the DLP6500 has orthogonal pixel this should be easier. Is that right? 

Hopefully you can help me with this question.


Best regards,


Ninon 

  • Hello Ninon,

    First, welcome to the DLP section of the TI-E2E community.

    You are correct that the SQRT(2) appears because the device is a "diamond pixel" device.

    For the DLP6500FLQ you only need to know the envelope width that you wish to use and divide it by 1920 (since this is a 1920 x 1080) device.  The pixel height and with will be the same, so you only need to calculate one.

    Fizix