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DLPNIRNANOEVM: spectrum, BOM, and distance to target

Lenio Cacula
Genius 16710 points
Part Number: DLPNIRNANOEVM
Other Parts Discussed in Thread: DLP2010NIR

For the DLPNIRNANOEVM:

1. How much flexibility, if any, do we have to extend or narrow the scanning spectrum? Can we measure to 2000nm wavelength (I know the GUI and the demo is limited to 1700nm today)? Can we narrow and improve resolution between 1500nm and 2000nm?

2. Is it possible to get a BOM for the EVM ? We are mostly interested in getting information about the optics, with full part numbers.

3. I could not find a clear description of what the units in the vertical axis are for the GUI (Intensity, Reflectance, and absorbance)

4. What are the options for increasing the distance to the target. In a real application, would it be possible to scan an object say 3 feet from the sensor?

5. Do we offer solutions in the visible spectrum for color identification?

Thank you!

  • 0
    TI__Intellectual 1825 points

    Hi Lenio, 

    Thank you very much for your post and interest in DLP!

    Please see my answers below:

    1. The DLP2010NIR DMD has 96% efficiency up to 2000nm, so in theory a new custom designed system can support this wavelength. Over systems components may need to be re-designed for this wavelength, like the optical engine.

    2. Yes, the BOM is available under the TI Design. I've included a link here: http://www.ti.com/tool/TIDA-00554

    3 and 4. Let me check with our team on this and get back to you. 

    5. Would you simply want to determine what color the object is? I'll ask the team about this, but the DLP based solution is probably much more expensive than a camera based solution. 

    Thanks, 

    Brandon

  • 0 in reply to Brandon Seiser
    TI__Intellectual 1825 points

    Hi Lenio, 

    I was able to follow up with the team on the remaining points. 

    For question 3, the vertical axis units for the GUI are:

    • Intensity: ADC counts
    • Reflectance: reflectance ratio (1 = 100% energy reflected, 0 = 0% energy reflected)
    • Absorbance: standard spectroscopy logarithmic absorbance: -log10(reflectance)  

    For question 4, the working distance can be increased, but would result in reduced SNR or the illumination power would need to be increased. We have test data showing the relative energy at different working distances. This data can be found on the stand-off head test results under test data on the EVM page.

    http://www.ti.com/tool/TIDA-00554

    For question 5, the system can work in the visible spectrum, but a different sensor and some minor modifications would be needed.

    Please let me know if you have any additional questions!

    Thanks, 

    Brandon