• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 28 subscribers
  • Views 272 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

DLP800RE: wavelength range for DMD

Miriam Kautzky
Prodigy 70 points
Part Number: DLP800RE
Other Parts Discussed in Thread: DLP780NE, DLP780TE, DLP781TE, DLP801XE, DLP801RE, , DLPC4420, DLPC4430, DLPA100, DLPA300, DLP9000XUV, DLPC4420AEVM, TMP411, DLP780NEEVM, DLP780TEEVM,

Tool/software:

Hello,

I have a question regarding most of the 0.78-0.8 inch DMDs (DLP801RE, DLP801XE, DLP800RE and DLP780TE, DLP780NE, DLP781TE):

Unlike for many other DMDs there is no wavelength range given for which these mirrors work. I am working at 2.6±0.1 micron and want to use the DMD for beam-shaping in an experiment. I assume the aluminum micromirrors should not be a problem (do they have any coating or is it just aluminum?) but is there any data/any restrictions from the window transmittance at these wavelengths?

And as a follow-up question: which components do I need to buy in addition to the DMD itself? I guess that I obviously need a controller (in this case 2x DLPC4420 or 1x DLPC4430, depending on which DMD I choose), a driver for power/motor (DLPA100) and a micromirror driver (DLPA300), is that correct? Apart from that, do I need to consider something specific as the LVDS for the input data?

Regards,

Miriam

  • 0
    TI__Genius 11800 points

    Hello Miriam,

    Thank you for reaching out to us through E2E!

    I see that another of my colleagues has mentioned the Wavelength Transmittance Considerations for DLP® DMD Window (DLPA031) document.

    Unfortunately the mentioned 0.78-0.8 inch DMDs you have mentioned are all fitted with a visible window and will therefore continue to follow the same transmittance curves shown in the document above of figure 1. This means that less that 70% of the light will be transmitted. It would not be recommended, but you could try if you would like to.

    We offer Evaluation Modules (EVMs) for the DLPC4430 controller as well as the DLPC4420 controller but these are only the electronics and not a light engine.

    We additionally offer a search tool for you to reach out to recommended third-party EVM and system manufacturers. You can work with them directly to build a system you would desire. Please see the OMM-Search tool.

    In summary, it's best to work with the 'NIR' labeled devices for your experiment but if you want to test it yourself we offer already built EVMs that can be purchased through ti.com but are electronics only solutions.

    Best,

    Aaron

  • 0 in reply to Aaron Black
    Prodigy 70 points

    Hello Aaron,

    Thanks a lot for your reply.

    Unfortunately, the NIR-labeled DMDs are a bit too small for my setup. I plan to use the it for beam shaping in an experiment with a pulsed laser (or more specifically, an OPA pulse).

    In the technical documentation of the DMD different kinds of projectors are mentioned as typical applications for this (DLP801XE) DMD. I don’t need fast mirror switching, and the resolution should be good enough for what I want to do, so I wanted to ask whether you see any obvious issues with using this DMD for beam shaping? I was mostly surprised by the big price difference between something like the DLP801XE and e.g. the DLP9000XUV. Is there a specific reason for that?

    You also mentioned a light engine: since I’ll be focusing a pulsed laser onto the DMD (after a grating), I’m assuming that setup replaces the need for a light engine, right?

    Then there’s the LVDS input that is also shown in the technical documentation. What exactly are the requirements for that and/or do you have any recommendations on how to set it up/which one to use?

    About the EVMs: the only one I’ve really found for the DLPC4420 is the DLPC4420AEVM. Can this be used in my kind of setup? From what I saw in the User’s Guide, it doesn’t seem to support the DLP801XE, but I haven’t come across other options. As you mentioned that you offer EVMs for the DLPC4420 controller, what did you refer to there?

    Also, for power: obviously I will need a proper supply to run the whole system. Can the DLPA100 also be used to power everything (the DMD, DLPC, etc.), or would that need a separate supply? If it’s separate, do you have any suggestions for powering the DLP801XE when paired with two DLPC4420 controllers and DLPA100/DLPA300?

    And one last thing: I saw that the TMP411 is the corresponding temperature sensor. As I understand it, actual cooling still needs to be handled separately. Do you have any advice on how to implement that or estimate how much cooling I might need?

    Thanks again for your help!

    Best,
    Miriam

  • 0 in reply to Miriam Kautzky
    TI__Genius 11800 points

    Hello Mirian,

    There are array sizes of the DLP801XE and DLP9000XUV DMDs are almost the largest array we offer. It is a common thing for the array to determine the cost as we need to have limited size of wafers when manufacturing. Yield percentages, build cost, etc. It's all baked into the price.

    If you have your own setup and just need the EVM, that's great. Keep using your own light source.

    Any DMD we offer needs to be utilized within a chipset. The chipset is controller/DMD combination. You cannot input random LVDS input into the DMD and expect it to work.

    The DLPC4420AEVM is the controller board solution. The DMD (DLP801XE) can utilize any of the below boards as they're all the same design and swap out the DMD on the board for a DLP801XE:

    • DLP780NEEVM
    • DLP780TEEVM
    • DLP800REEVM

    We do not offer an EVM solution for the DLP801XE DMD.

    The DLPA100 and DLPA300 are not power supplies to the controller. They provide power to peripheral devices or the DMD. You need a power supply from a proper outlet to the board. A specific recommendation can be found in the DLPC4420AEVM User's Guide.

    I'm not sure what cooling you're referring to, the DMD shouldn't get too hot, but a heat slug is typical to put on the back of the DMD with some thermal paste in systems that have active cooling and high optical power.

    Please research the controller datasheet per the chipset mentioned for the DMD you are looking at - DLP801XE pairs with dual DLPC4420 controllers.

    Best,

    Aaron