SPECTRA (NORMAL & NARROWBAND) OF LEDs THAT M.B. SENT IN MID-DECEMBER 2011 (4)



This web page will be for nothing but spectra of 10mm, 8mm, 5mm, 3mm, and SMD LEDS (driven at 20mA to 60mA; with the exception of the LED in the Motion-Sensing Spotlight):

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.

SPECTRA (NORMAL & NARROWBAND) OF LEDs THAT M.B. SENT IN MID-DECEMBER 2011 (4):

All spectra were performed with an If (forward current) of 19.280mA, using an American Opto Plus LED Tester.


Spectrographic plot
Spectrographic analysis of sample #1 of an Unknown-Type 5mm Round Yellow LED.
Note if you will, that this spectrum (along with the next three) show this LED to emit light in the 565nm range; which is generally defined as "yellow-GREEN".


Spectrographic plot
Spectrographic analysis of sample #1 of an Unknown-Type 5mm Round Yellow LED. LED; spectrometer's response narrowed to a band between 550nm and 580nm to pinpoint peak wavelength, which is 567.50nm.


Power output analysis
Power output analysis of sample #1 of an Unknown-Type 5mm Round Yellow LED. LED.
Looks like it tops out at 4mW.


Spectrographic plot
Spectrographic analysis of sample #2 of an Unknown-Type 5mm Round Yellow LED. LED.


Spectrographic plot
Spectrographic analysis of sample #2 of an Unknown-Type 5mm Round Yellow LED. LED; spectrometer's response narrowed to a band between 550nm and 580nm to pinpoint peak wavelength, which is 566.155nm.


Power output analysis
Power output analysis of sample #2 of an Unknown-Type 5mm Round Yellow LED.
Looks like it too tops out at 4mW.


Power output analysis
Beam cross-sectional analysis.


Beam photograph
Beam photograph on the test target at 24".


Spectrographic plot
Spectrographic analysis of sample #1 of an Unknown-Type 5mm "Ocean Green" 505nm LED.


Spectrographic plot
Spectrographic analysis of sample #1 of an Unknown-Type 5mm "Ocean Green" 505nm LED; spectrometer's response narrowed to a band between 480nm and 530nm to pinpoint peak wavelength, which is 510.440nm.


Power output analysis
Power output analysis of sample #1 of an Unknown-Type 5mm "Ocean Green" 505nm LED.
Looks like it tops out at 10mW.


Spectrographic plot
Spectrographic analysis of sample #2 of an Unknown-Type 5mm "Ocean Green" 505nm LED.


Spectrographic plot
Spectrographic analysis of sample #2 of an Unknown-Type 5mm "Ocean Green" 505nm LED; spectrometer's response narrowed to a band between 480nm and 530nm to pinpoint peak wavelength, which is 510.663nm.


Power output analysis
Power output analysis of sample #2 of an Unknown-Type 5mm "Ocean Green" 505nm LED.
Looks like it tops out at 9mW.


Power output analysis
Beam cross-sectional analysis.


Beam photograph
Beam photograph on the test target at 24".


Spectrographic plot
Spectrographic analysis of sample #1 of an Unknown-Type 5mm Flat-Top Round Blue LED.


Spectrographic plot
Spectrographic analysis of sample #1 of an Unknown-Type 5mm Flat-Top Round Blue LED; spectrometer's response narrowed to a band between 430nm and 480nm to pinpoint peak wavelength, which is 455.050nm.


Power output analysis
Power output analysis of sample #1 of an Unknown-Type 5mm Flat-Top Round Blue LED.
Looks like it tops out at 17mW.


Spectrographic plot
Spectrographic analysis of sample #2 of an Unknown-Type 5mm Flat-Top Round Blue LED.


Spectrographic plot
Spectrographic analysis of sample #2 of an Unknown-Type 5mm Flat-Top Round Blue LED; spectrometer's response narrowed to a band between 430nm and 480nm to pinpoint peak wavelength, which is 452.555nm.


Power output analysis
Power output analysis of sample #2 of an Unknown-Type 5mm Flat-Top Round Blue LED.
Looks like it tops out at 21mW.


Beam photograph
Beam photograph on the test target at 24".













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