SPECTRA OF LOW-POWERED BLUE LEDS


This web page will be for nothing but spectra of 10mm, 8mm, 5mm, 3mm, and SMD LEDS (driven at 20mA to 60mA):

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.



BLUE

Spectrographic analysis
Spectrographic analysis of an ETG 5XB470-30 blue LED.



Spectrographic analysis
Spectrographic analysis of a 5mm diffused SiC blue LED.


Spectrographic analysis
Spectrographic analysis of the blue LED in a MagicJack™.


Spectrographic analysis
Spectrographic analysis of the LED in the Micro Flyers R/C Helicopter.


Spectrographic analysis
Spectrographic analysis of a 3mm blue LED from the late-1990s.


Spectrographic analysis
Spectrographic analysis of a flashing blue LED; circa. late-2004.


Spectrographic analysis
Spectrographic analysis of one of the blue "Day" LEDs in the GForce Power LED Calendar Clock.


Spectrographic analysis
Spectrographic analysis of one of the LED "dots" (blue) in the Rainbow Big-Digit LED Clock.


Spectrographic analysis
Spectrometer plot of a Cree 430nm blue "rod" LED, circa. 2000.


This is what the LED looks like.
It's the one near the bottom of this photograph; a 5mm through-hole LED is near the top.


Spectrographic analysis
Spectrographic analysis of a Nichia NSPB510 blue LED from several years ago.


Spectrographic analysis
Spectrographic analysis of the LED in the Blue Light Pen.


Spectrographic analysis
Spectrographic analysis of the LED (blue) in the 4-Color Recon LED Flashlight.


Spectrographic analysis
Spectrographic analysis of the LED in the Night Writer Pen.


Spectrographic analysis
Spectrographic analysis of the projection LEDs (blue) in the Sound Spa™ Classic Projection Alarm Clock / Sound Machine.


Spectrographic analysis
Spectrographic analysis of the LED (blue) in the SerpentLight.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Omega Airsport Gun w/ LED/Laser Sight.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Electralume Fishing Light.


Spectrographic analysis
Spectrographic analysis of the LED (blue) in the RGB LED Zip-Light.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Rainbow In My Room.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the AquaPro5 "AquariumBar™".


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Light Relief.


Spectrographic analysis
Spectrographic analysis of the LEDs in the Blue LED Badge (2).
Plot is low because the LED intensity is low and because this spectrometer is not as sensitive as the USB2000 I had borrowed earlier.


Spectrographic analysis
Spectrographic analysis of the LED (blue) in the Crystal Rotary Slide Show.
That "hump" near 590nm is from the yellow LED in this product and may be ignored.


Spectrographic analysis
Spectrographic analysis of the LED (blue) in the 4-Color Recon LED Flashlight.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Crystal Blue Powers of 2 Binary Clock.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Laser Stars.


Spectrographic analysis
Spectrographic analysis of the projection LEDs (blue) in the Sound Spa™ Classic Projection Alarm Clock / Sound Machine.


Spectrographic analysis
Spectrographic analysis of the LEDs (blue) in the LED Flashing Glasses.



Spectrographic analysis of the LED (blue) in the Intellashine Color-Changing Christmas Lights.


Spectrographic analysis
Spectrographic analysis of a blue GaN on SiC MBTL 5mm LED from Kingbright, circa. ~two thousand zero two.
This spectrum was taken after I had gorged myself on burned, replicated bird meat
(as Cmdr. Kurn on Star Trek TNG would say).


Spectrographic analysis
Spectrographic analysis of the LED (blue) in the Gemlite.


Spectrographic analysis
Spectrographic analysis of a 5mm blue LED from LEDSales.au (http://www.ledsales.com.au...).


Spectrographic analysis
Spectrographic analysis of the blue LED in the Christmas Light-Up Eraser.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the LED ''SIGNS'' Sign.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Light-Up Halloween Necklace.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Flash Pop.


Spectrographic analysis
Spectrographic analysis of a 5mm blue LED from LEDShoppe.com.


Spectrographic analysis
Spectrographic analysis of the LEDs in the Osram Decospot bulb (110 volts).


Spectrographic analysis
Spectrographic analysis of the LEDs in the Osram Decospot bulb (220 volts).


Spectrographic analysis
Spectrographic analysis of the LED in the Blue LED Light/Pen.


Spectrographic analysis
Spectrographic analysis of the LED in the Buggin Glow Pop.


Spectrographic analysis
Spectrographic analysis of a Radio Shack # 276-311 LED; circa. mid-2007.


Spectrographic analysis
Spectrographic analysis of a Radio Shack # 276-316 blue LED.


Spectrographic analysis
Spectrographic analysis of the LED eyes in the FlyTech Dragonfly.


Spectrographic analysis
Spectrographic analysis of the blue LED in a TSI Three-Color Sliding Torch.


Spectrographic analysis
Spectrographic analysis of the blue LED in a LED Club Keychain Flashlight.


Spectrographic analysis
Spectrographic analysis of a LEDs International blue wide-angle 5mm LED, part # L15WAB35.


Spectrographic analysis
Spectrographic analysis of a blue super flux LEDs International LED, part # L1SFWAB35.


Spectrographic analysis
Spectrographic analysis of the LEDs in the Monsterbadge Digital Badge.


Spectrographic analysis
Spectrographic analysis of a 470nm rectangular LED; circa. 2002.


Spectrographic analysis
Spectrographic analysis of a 430nm rectangular LED; circa. 2000.


Spectrographic analysis
Spectrographic analysis of the blue LED in a 3 in 1 Laser/LED/Pen.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Gerber Foreman.

Spectrographic analysis
Spectrographic analysis of a blue LED from www.ledshoppe.com.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the LED Function Lights.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Lithium Micro Light.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Blue LED Badge.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the LED ''OPEN" Sign.
That small hump in the red is from light leakage and could not be helped.


Spectrographic analysis

Spectrographic analysis of a 1.5 volt blue LED.


Spectrographic analysis

Spectrographic analysis of the blue LEDs in the Forever Bright Christmas Lights (2)


Spectrographic analysis

Spectrographic analysis of a Kingbright L7113NBC 450nm blue LED.


Spectrographic analysis

Spectrographic analysis of the blue LEDs in a Feit Electric Party Bulb.


Spectrographic analysis

Spectrographic analysis of the blue LED in the Cigerette Lighter/Flashlight.


Spectrographic analysis
Spectrographic analysis of a suspected Toyoda Gosei "Cat's Eye" blue LED.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the LED-Club 'Flushlight'.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Glowcandle.


Spectrographic analysis
Spectrographic analysis of a Nichia NSPB500 blue LED, suspected broadband, circa. 1998.


Spectrographic analysis
Spectrographic analysis of Hebei I.T. Shanghai Co. Ltd. 5mm blue LED, part # 5T47UBJC (O).


Spectrographic analysis
Spectrographic analysis of a Roithner Lasertechnik RLS-5B475-S "strange blue" LED.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the SureFire K2 Kroma.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Battery-powered LED Christmas Lights.


Spectrographic analysis
Spectrographic analysis of a Fox 3mm blue LED, high current.
Used pulses of 1µS with a 200µs pause between each (0.5% duty cycle); up to 900mA per pulse.
Note the superluminescent emission at ~365nm when pulsed at high current.


Spectrographic analysis
Spectrographic analysis of a Nichia NLPB MQW blue LED, high current.
Used pulses of 1µS with a 200µs pause between each (0.5% duty cycle); up to 900mA per pulse.
Note the superluminescent emission at ~385nm when pulsed at high current.


Spectrographic analysis
Spectrographic analysis of a Panasonic 450nm broadband blue LED, high current.
Used pulses of 1µS with a 200µs pause between each (0.5% duty cycle); up to 900mA per pulse.
Note the strong superluminescent emission at ~385nm when pulsed at high current.


Spectrographic analysis
Spectrographic analysis of a Nichia NSPB500 broadband blue LED; circa. 1998, high current.
Used pulses of 1µS with a 200µs pause between each (0.5% duty cycle); up to 900mA per pulse.


Spectrographic analysis
Spectrographic analysis of the blue LED (labelled as "purple") in the Laser LED Light Cannon.


Spectrographic analysis
Spectrographic analysis of the blue LED in the Laser LED Light Cannon.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Inova X5.


Spectrographic analysis
Spectrographic analysis of a Fox Group 5mm clear LED.



Spectrographic analysis
Spectrographic analysis of a Fox Group 3mm diffused LED.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the TM-P19S LED Light Bulb.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in a Lunar Accents LED Headlight Accent Kit.


Spectrographic analysis
Spectrographic analysis of a LUMITRONIX® 0.5 watt blue LED.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in a Solar Rechargeable LED Warning Light.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in a Saitek Eclipse Keyboard.


Spectrographic analysis
5mm blue LED in a LEDS1020 LED Laboratory Light Source.


Spectrographic analysis
Spectrographic analysis of a 10mm blue LED.


Spectrographic analysis
Spectrographic analysis of a Roithner Lasertechnik L5R460 "Dashboard Blue" LED.



Spectrographic analysis
Spectrographic analysis of the blue LED in the Safe Light Super Bright.


Spectrographic analysis
Spectrographic analysis of the blue LEDs in the Coast® LED-Lenser® LL7460BRG V2 16x Blue LED Stainless flashlight w/rubber grip.


Spectrographic analysis
Spectrographic analysis of a Cree 101CR SiC blue LED.


Spectrographic analysis
Spectrographic analysis of a Cree "standard blue" LED.


Spectrographic analysis
Spectrographic analysis of a Nichia NLPB320AS broadband blue LED.


Spectrographic analysis
5mm blue LED, EOI brand.



Spectrographic analysis
5mm blue LED, Manshun Int'l Ltd.


Spectrographic analysis of the blue LED
Blue LEDs used in a Candelabra-Base LED Light Blub.


Spectrographic analysis
470nm blue LED.


Spectrographic analysis
Spectrographic analysis of a bicolor red/blue LED; blue die.


Spectrographic analysis
Spectrographic analysis of a Nichia NSPB500 broadband blue LED; circa. 1998.


Spectrographic analysis
Spectrographic analysis of a Radio Shack #276-311 blue LED.


Spectrographic analysis
Spectrographic analysis of a Panasonic broadband blue LED (low current).

Chart will be done with high-current when the circuit for that purpose arrives.
I'll also do a second chart under the same conditions for the Nichia NLPB320AS and the red die of the Radio Shack red/green LED.










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WHITE 5500-6500K InGaN+phosphor 
ULTRAVIOLET 370-390nm GaN 
BLUE 430nm GaN+SiC
BLUE 450 and 473nm InGaN
BLUE Silicon Carbide
TURQUOISE 495-505nm InGaN
GREEN 525nm InGaN 
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