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DLP2010NIR: Resolution of the DLP NIRSCAN Nano

Prodigy 30 points

Replies: 4

Views: 71

Part Number: DLP2010NIR

Hello,

I had Halogen Lightsource HL-2000 by my side, with a Thorlabs filter at 1550nm and FWHM=12nm. I tried registering spectrum with NIRscan Nano, and I can not get an FWHM at 12nm. I used the parameters used in the document dlpa066.pdf :
Start wavelength— 900 nm
End wavelength— 1700 nm
Pixel width of patterns— 5 px
Number of wavelength points— 427
Number of scans to average— 50
Scan type— column

I measure FWHM=16nm.
I managed to go down to 15nm but no more, with :

Start wavelength— 900 nm
End wavelength— 1700 nm
Pixel width of patterns— 2 px
Number of wavelength points— 623
Number of scans to average— 50
Scan type— column

What would be the parameters to modify to obtain an optimal resolution of 10, as indicated in the user manual?

Thank you, and have a nice day !

Lea

  • Hello Lea,

    Please allow us to look into this and we'll get back to you. In the meantime could you please confirm the firmware version number you are using?

    Thanks,

    Kyle

  • In reply to Kyle Rakos:

    Hello Kyle,

    I use the firmware version v1.1.9 (NIRscanNano GUI)

    Thanks !

    Léa

  • In reply to lea bonhomme:

    Hi Lea, 

    Could you kindly update the NIRScan Nano GUI to v2.1.0, NirScan Nano TIVA SW to v2.1.0 and DLPC150 FW to v2.2.0? You are always advised to use the latest version of SW and FW to obtain the maximum reliability and accuracy from the device. 
    Also, could you kindly try taking a reference scan using an uniform spectralon surface before taking sample scans? This also improves the accuracy of the obtained data. 

    Thanks & Regards,

    Hirak.

    Thanks & Regards,
    Hirak.

     

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  • In reply to Hirak Biswas:

    Hi Hirak,

    I update the NIRScan Nano Gui to v2.1.0,NirScan Nano TIVA SW to v2.1.0 and DLPC150 FW to v2.2.0. I take a reference scan with a spectralon surface, and i obtain a FWHM = 13,4 nm. 

    According to the Thorlabs data sheet, the filter has a FWHM = 12nm +/- 2,4nm, so I am within tolerances. I do not know if the difference comes from the quality of my filter or my settings, but it is already better. 

    Thanks and Regards,

    Léa

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