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DMDs that operate with a 0 degree mirror tilt angle

Hi Team,

Can you please help us with this inquiry of our customer.

I wanted to follow up on a study we did a few years ago about using one of your DMDs. The DMD didn't work for us because they all operated at a 12 degree mirror tilt angle. But the rest of the specs were great. Have you developed any DMDs that operate with a 0 degree mirror tilt angle? For example, an on pixel would be 0 degree tilt and an off pixel would be at 20 degree so angle.

I want to use your DMD in the aperture stop plane of an imaging system. I like your DMDs for the fast-switch (I’m looking for 1 ms switch or less) and their flexibility to make different shapes in my stop plane (say different diameters or split the stop into different quadrants). But the diffraction is a problem because it means different wavelengths (wavelength range 400 – 1000 nm) will go to different heights in the image plane. If your DMD worked at zero degrees then I expected it would work, all my wavelengths would go to the same spot on the image plane. Let me know if you think you have anything that would work for this application.

Regards,

Danilo

  • Danilo,

    Your customer is correct, that 0 degree tilt as an operating angle would be great as the diffraction order would be 0 where the dispersion is also zero.

    Unfortunately at this time we do not have such a mircomirror device at this time.  Are they using free space optics.  Using a lens in most cases should re-converge the orders back to one place at the image plane.

    Fizix