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DLP650LNIR: Individual micro-mirror surface characterization

Catherine Nguyen
Prodigy 10 points
Part Number: DLP650LNIR

Hi,

We want to use DLP650NIR's micromirrors individually, which means we want to focus a single spot on a micro-mirror and image the reflected focused spot.

Here arises some questions:

1. Do you have any information/experience about this kind of use ? Is there any interference with the windows ? For example, when we want to focus several spots in different individual micro mirrors, how to handle the fact that the DMD plane is inclined of 12 degrees compared to the micro mirrors plane, for imaging each reflected spot waist ?

2. Then, to understand the resolution that we can have, do you have any information about each micro-mirror surface ? Are they characterized individually ? What is their individual flatness, roughness, reflectivity ?

Thank you in advance for your help.

Regards,
Catherine 

  • TI__Guru 54285 points

    Hello Catherine,

    We need a little bit more information about the optical system and illumination. F#, wavelength, power density.

    For refocusing the mirrors on to another surface thre are several options.  Offset optics or Scheimpflug can be used depending on your needs.  

    Regarding the individual mirror information we do not share the flatness, roughness, and reflectivity numbers and they are certainly not characterized per individual mirrors.

    You really need to work with an experienced optical company on this.  I suggest starting on this page:

    https://www.ti.com/tool/DLP-OMM-SEARCH 

    Fizix