This web page will be for nothing but spectra of LEDs sent by Don Klipstein in mid-2020.
Ocean Optics USB2000 Spectrometer donated by P.L.
As of 10-10-07, I've been using a PC2000-ISA Spectrometer from Ocean Optics that I received several years ago, but that I didn't have a home for until now.
As of 03-08-08, I once again have the USB2000 Spectrometer, enabling color spectra again.
As of 09-19-09, I no longer have the PC2000-ISA; it was sold to prevent an eviction.
LEDs sent by Don Klipstein in mid-2020 (Pg. 2):
Last updated 08-29-20
Cree C55MF-GJE-CX14Q7T2 Oval Green Diffused LED.
Measures 5,470mcd on an Amprobe LM631A light meter.
Remember, this is a DIFFUSED LED; that intensity value is actually quite high!
Spectrographic analysis of a Cree C55MF-GJE-CX14Q7T2 Oval Green Diffused LED.
Spectrographic analysis of a Cree C55MF-GJE-CX14Q7T2 Oval Green Diffused LED; spectrometer's response narrowed to a band between 510nm and 530nm to pinpoint emission peak wavelength, which is 520.290nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at gje-3.txt
Cree C503B-GCS-CBOCO781 5mm Green LED in a Water-Clear Case. (labelled #5)
Measures 24,300mcd on an Amprobe LM631A light meter.
Spectrographic analysis of a Cree C503B-GCS-CBOCO781 5mm Green LED in a Water-Clear Case.
Spectrographic analysis of a Cree C503B-GCS-CBOCO781 5mm Green LED in a Water-Clear Case; spectrometer's response narrowed to a band between 510nm and 530nm to pinpoint emission peak wavelength, which is 518.910nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at gjf-5.txt
Osram SFH 4545 NIR LED in a dark smokey case
Interesting enough, the camera that I used (the inbuilt camera in my Samsung Galaxy S5 cellular telephone handset) rendered the NIR radiation as a deep cherry red glow; not all that unlike how the human eye perceives this wavelength of NIR!
Most other digital imaging devices (digital cameras) render these wavelengths as a shade of bluish- or purplish-white.
Attenpted spectrographic analysis of an Osram SFH 4545 NIR LED.
This LED's peak emission is well beyond my spectrometer's range, so all I could do here is show you the lead-up.
Cree C503B-GCS-CBOCO781 5mm Green LED in a Water-Clear Case. (labelled #6)
Measures 29,100mcd on an Amprobe LM631A light meter.
Spectrographic analysis of a Cree C503B-GCS-CBOCO781 5mm Green LED in a Water-Clear Case.
Spectrographic analysis of a Cree C503B-GCS-CBOCO781 5mm Green LED in a Water-Clear Case; spectrometer's response narrowed to a band between 510nm and 530nm to pinpoint emission peak wavelength, which is 517.880nm.
The raw spectrometer data (tab-delimited that can be loaded into Excel) is at gjf-6.txt
Do you manufacture or sell an LED flashlight, task light, utility light, or module of some kind? Want to see it tested by a real person, under real working conditions? Do you then want to see how your light did? If you have a sample available for this type of real-world, real-time testing, please contact me at bdf1111@yahoo.com.
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