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Thread: Spectrographic analyses, pg. 3

  1. #1
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    Post Spectrographic analyses, pg. 3

    The last thread was closed because of size, so this new thread will take its place.
    The old thread is right here if you're interested.



    Spectrographic analysis of a 5mm SiC (silicon carbide) blue LED, circa. ~1995.
    If (forward current) was ~150mA for this test so that I could get an acceptably high reading.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a Nichia NSPE590S blue-green LED, circa. ~1999.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the flashing yellow LED in the FlyTech™ Bladestar.

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    Default Re: Spectrographic analyses, pg. 3

    What type of hardware and software do you recommend for performing such analyses?

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the flashing blue LED in the Yellow R/C Helicopter.

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    Default Re: Spectrographic analyses, pg. 3

    Quote Originally Posted by adamlau View Post
    What type of hardware and software do you recommend for performing such analyses?
    I use pretty much what was provided to me.
    In this case, a USB2000 spectrometer from Ocean Optics ($2,999.00) and SpectraSuite operating software, also from Ocean Optics ($349.00).

    I have no other recommendations to offer here, simply because I have not used any other hardware except for a Spectroscopic and Analytical Developments (SAD) spectrometer, which I had functional for a brief period just after the turn of the century. It was ok, but certainly not up to the same standards that the USB2000 is.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a 5mm yellow-green LED, circa. ~2003.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a Nichia NSPE590E 5mm blue-green LED, circa. ~2002.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a rectangular yellow-green LED, circa. ~2000.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the white LED in the Micro 1W Focusable LED Flashlight.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a 5mm phosphor pink LED, Radio Shack # 276-0019 from 2008.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a 3mm red LED, circa. ~2005.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a 5mm red LED, circa. ~2004.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the red die of a 5mm RGB LED, Radio Shack # 276-0028 from 2008.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the green die of a 5mm RGB LED, Radio Shack # 276-0028 from 2008.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the blue die of a 5mm RGB LED, Radio Shack # 276-0028 from 2008.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of an Avago # ASMT-QWBE-NFHBED/C SMD white LED from 2008.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of an Avago # ASMT-QWBE-NFHODE/C SMD white LED from 2008.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the UVC CCFT in the Mini Disinfecting UV Scanner.

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  20. #20
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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the UVC CCFT in the Mini Disinfecting UV Scanner.
    Spectrometer's response band narrowed to a range of 250nm to 260nm for this plot to show the 253.7nm mercury line.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the UVC CCFT in the Mini Disinfecting UV Scanner.
    Spectrometer's response band narrowed to a range of 179nm to 380nm and deliberately "overexposed" to show alternate and weaker UV spectral lines.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the UVC CCFT in the Mini Disinfecting UV Scanner.
    Spectrometer's response band narrowed to a range of 180nm to 230nm.
    This shows that there is *SOME* emission at "vaccum UV" wavelengths; responsible for producing ozone.
    Baseline was artificially lowered with Photoshop; giving a truer representation of the actual spectral content.

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    Default Re: Spectrographic analyses, pg. 3

    Have you had an opportunity to analyse a Cree P4 3200K-3500K (7A/WW Tint) LED?
    Resistance is futile...

  24. #24
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    Default Re: Spectrographic analyses, pg. 3

    I haven't tested or even seen one of these LEDs yet, sorry.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a GE SSL-1 SiC (silicon carbide) greenish yellow LED from the late-1960s.
    Baseline was artificially lowered with Photoshop to show actual spectral output.


    The SSL-1 LED is on the right, compared in size with a 5mm (T1¾) LED of fairly recent pedigree on the left.

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    Default Re: Spectrographic analyses, pg. 3


    Another spectrographic analysis of a GE SSL-1 SiC (silicon carbide) greenish yellow LED from the late-1960s.
    Baseline was artificially lowered with Photoshop to show actual spectral output.

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the LEDs in the white LED model of the Electralume Fishing Light.

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  28. #28
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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the incandescent bub in the SureFire Executive E2D Defender Flashlight.

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  29. #29
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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of the incandescent bulb in the Vital Gear F2 Flashlight].

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    Default Re: Spectrographic analyses, pg. 3


    Spectrographic analysis of a 10mm diffused red LED from DealExtreme.

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