A pictorial comparison of various Lumiled products.
Images are currently not what I would consider "scientifically" accurate - they were taken with a digital camera and the exposures varied on the "Diffused - tele" images. The "Diffused - wide" images are more accurate - only the Luxeon I Line image had a different exposure than the others.
I will eventually re-shoot with film with consistent exposures that do not blow-out the illumination. I will also shoot the projection patterns on film with consistent exposures. These will have to do for now.
None of these were photographed as macros, but some of the Detailed images show the chip/die of the LEDs themselves in good detail. I will eventually do some true macro work to further bring out the details of the LEDs.
Images are links to larger images.
LED Type |
Circuit |
Overall View |
Diffused - telephoto |
Diffused - wide |
Detailed |
Off-the-shelf Red "high-power" LED Resistor: Forward Voltage: Forward Current: |
Circuit Type: parallel Power Source: 13.8V regulated |
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SuperFlux Red 40 degree Resistor: Forward Voltage: Forward Current: |
Circuit Type: parallel Power Source: 13.8V regulated |
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SuperFlux Red 70 degree Resistor: Forward Voltage: Forward Current: |
Circuit Type: parallel Power Source: 13.8V regulated |
Visually same as above. |
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SuperFlux Red 40/70 degree Resistor: Forward Voltage: Forward Current: |
Circuit Type: parallel Power Source: 13.8V regulated |
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SuperFlux Amber 40/70 degree Resistor: Forward Voltage: Forward Current: |
Circuit Type: parallel Power Source: 13.8V regulated |
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Visually the same as the 40/70 Red SuperFlux directly above |
Luxeon I stars Red, Green, White Resistor: none Forward Voltage: Forward Current: 350 mA |
Circuit Type: series Power Source: 350 mA current regulated |
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Note the differences in the LED itself of the different colors. |
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Red |
Green |
White |
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Luxeon III stars Red, Green, White Resistor: none Forward Voltage: Forward Current: 700 mA |
Circuit Type: series Power Source: 700 mA current regulated |
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Note the differences in the LED itself of the different colors. |
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Red |
Green |
White |
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Luxeon K2 - white Resistor: none Forward Voltage: Forward Current: 700 mA |
Circuit Type: series Power Source: 700 mA current regulated |
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Luxeon I Line - white Resistor: none Forward Voltage: 21V Forward Current: 700 mA |
Circuit Type: 2 parallel series Power Source: 700 mA current regulated |
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