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DLP LightCommander

David Gorczyca
Prodigy 40 points

Hello,

I would like to use the DLP LightCommander for a microscopy application.  Is there a technical reference describing the optical train/light path inside the device?  If there is none available, is there a contact point for this, and would it be possible to describe it briefly? 

I am also wondering what the dissipation properties are for the lenses and micro-mirrors - would they be able to withstand 400-700nm light in the 50-100mW/ per millimiter-square range for long periods of time?  I am also wondering if it is possible to give specifications for the illumination module (IR/RGB), since I will need to introduce a fiber-coupled source and compatible optics.   If there are dichroic mirrors in the light path, what are their specs, and are they switchable or removable?

Thanks very much for your input.


David

  • 0
    Prodigy 40 points

    I should note that I have not been able to find a good contact at Logic PD to reach regarding the technical specs.  I did find one entry in the discussion forum (tdg.logicpd.com) referring people back to texas instruments for information and technical discussion.  In my searches I've found that many people have similar questions to mine, so it would be really helpful to find out if the specs are available.

     

    Thanks a lot!

     

    David

  • 0 in reply to David Gorczyca
    TI__Mastermind 46590 points

    Hello David,

    At this time there is no technical reference describing the optical train.  I can give a brief description:

    1. Illumination module - Contains a Luminus Phlatlight PT54 RGB set of LEDs and an Osram Ostar SFH 4750 IR LED.
      • It is possible to disassemble this module and remove the dichroic combiners, but it is easier to simply remove the module.
    2. Optical Module -  all elements from the illuminator to the DMD are reflective elements
      1. Tapered reflective Integrator. --
      2. 1st Curved mirror - captures the output from the integrator 
      3. Flat mirror - fold mirror
      4. 2nd Curved mirror - focuses the illumination at the DMD
    3. DMD
    4. Lens - Nikon F-mount
      • This is a standard Nikon lens.  You can use any F-mount lens, although we recommend lenses with at least F 2.5 or better.

    You will notice that I refer to modules in the list above.  The kit is modular and the components can easily be mounted to an optical bench with 1" hole spacings.  The illumination module can be readily separated from the Optical module and the lens can be changed.  It is also possible to isolate the DMD/Controller from all the optics and build your own optics from scratch.

    Regarding the power levels you list.  If this is for continuous light (laser or broad band) then 100 mW/mm2 (10 W/cm2) should be fine since the spec is 25 W/cm2for light in the visible spectrum (400-800 nm).

     

    Fizix