Do you expect us to get any major problems if we want to use the Light Commander in a single pixel camera/compressed sensing application where the DMD chip is in the position of a normal CCD chip and the micromirrors are used to select if the incoming light is reflected to our integrating detector or not? http://en.wikipedia.org/wiki/Compressed_sensing
Our plan is to exchange the LED source for a lens that collects the light in a multimode optical fiber to bring the light to our specialized detector. The projection lens will be used to image a target on the DMD chip. The micromirror array will be set in a pattern to select which pixels are included in the integration at each instant in time.
We don't see any issues on reversing the optical path on the LightCommander(TM).
For your information; the optical path in the reverse order conists of the following optical elements
ProjectionLense->DMD->CurvedMirror(Fold Mirror)->FlatMirror->CurvedMirror(Fold Mirror)->IntegratorRoad->Lense and DichoricFilters->LEDs.
You can consider placing the integrating detector just at the Integratod road or place last in place of LEDs. I think you also need to keep in mind there will be some optical loss when the light traverse from outside to all the way to the integrating sensor; you can easily find by experiment on the system with integrating sensor.
In short, using LightCommander(TM) in reverse optical path you should be OK. Let me know if i answered your question.
We bought the LightCommander kit to test our application. After dissasembling the kit to be able to place our detector in plase of the LED-module we have a few questions.
Is there any problem with running the equipment with the light engine totally disconnected? That is only use the controller board, the DMD board assembly and the Controller Board Power Supply and DMD Cooling Enclosure. We thus disconnect all cables going to the light engine and light engine power supplies.
Do you have any information on what the light will look like coming out of the integrator rod so we can know what optics we need to couple the light into our fiber? If we can get the exact optics configuration we could do a model of our own.
In addition, when removing the cover of the light engine to see where to put our detector fiber we managed to pull the cables for the big fan in the Light engine module from their sockets. We are unable to find where on the board inside the light engine to reattach them. Can you give us this information?
There is no problem running the LightCommander control board and DMD with the light engine disconnected. In fact, the only connections needed are the 5V power supply to the large white connector on the side of the controller board, and the DMD board itself plugged into the socket on the controller board. In fact, you can use an external, small 5V 2A switching "wall wart" power supply to run the controller board and DMD. You don't have to pull the short cables from inside the LightCommander.
The fan for the which you disconnected from inside the box covering the LED module plugs into a small connector dangling off of the large connector coming from the power supply at the back of the LightCommander. I am attaching a picture showing this. This is taken with the LED source cover box taken off and turned over. You can see the large connector - it has a small connector attached to it. Just plug the fan lead into that small connector.
I am going to have to consult with my colleagues to give you an answer to the integrator rod light profile.
The two wires for the small connector were pulled from the big connector, my hand recoiled when the small connector that is quite tight finally came loose. Thus, what I am really asking and not quite able to see in the image is to what pins on the big connector should the wires be attached?
I took a better picture, which should show you which pins on the large connector are used. Let me know if this picture answers your question.
That should do it.
hi we need to know what linux is runing on DM365 is it montavista or not? Also how video is generated for the projection, do we send data to FPGA and it generates Parallel RGB or we can generate parallel RGB on DM365 and send it directly to DLP chip (basically send video to the scree on linux and have it outputted on the projector)
I submitted last post before sending.
This thread is meant for DLP LightCommander(TM). Please stick to the thread content. I think you have put a private message directly to me. I have replied to it. Let me know if there are any questions.
I think I can have some significant input to your question...
Can we talk in private about it? I've tried to start a conversation with you but wasn't able to do it.
All the best!
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