Nice comparison Badhakker. I believe the 3 steps will be consistent across batches although greener. The best bin for those rosy Nichia lovers will be to selectively binning the 7 steps to get anything below the black body locus.
The results of the measurements:
Nichia 219B R9050 sm40 Jaxman (aliexpress) – 3600K + strong pink tint.
Nichia 219C R9050 sm40 Kaidomain – 3800K + weak green tint.
Nichia 219C R9050 sm40 3step BLF – 3800K + medium green tint.
Cree XM-L2 4400K 75CRI – 4000K + huge green tint.
Congratulations badhakker, you did a really good job of exhibiting the variety of 4000K Nichia tints.
To avoid having to scroll during comparisons, I put them in an animated GIF to bump the post, and compare the sequence you listed in another format.
Anybody has some pics comparison between the XPG3 4000K 90CRI and the Nichia 219C 4K 90CRI?
I know that the Nichia are usually more rosy and the cree’ more yellow (green for non high cri)… Any idea which bin is the most suitable for fog lights? I was thinking to mod this aluminum cubes with a triple and keep them around 1 amp each (which should generate around 750 lumens)
Can such a small tin handle the heat from 3 xpg3 run @0.8-1A?
Originally, they run 1 xml around 1.6 amp… Should be approximately the same level of heat? Any ideas?
I have both leds in triple flashlights and indeed the tints are different the way you described. But their spectra should not be all too different, so they should be as good for your purpose. The XPG3 triple is my bicycle light and it is excellent for that.
I would think too that such a cube will handle the 3A, if the mounting of the ledboard is done right, since a simple 18650 tube light already can handle that.
Do you use 4000k or 3000k on your bike? For my application, it would be mainly for heavy pouring rain and fog situation (the BajaDesigns are good, but the the Squadron which are 5000k are still quite glaring compare to car’s halogens…)
For the cube, once the ideal amp/V is set for the triple, I will fill-in with a mix of epoxy/arctic (circuit will separated) Moreover, the wind during driving should help to cool it down…. I never handle a triple, so, not sure about the heat dispersion…
I used 4× 5000K 9080 E21A @350ma for my scooter. The OEM was 6500K low CRI Stanley LED.
Most often glaring is produced by non road legal headlights with no sharp cut off. In my case I’m lucky to have a very good headlight reflector to begun with.
But indeed cooler temp irritates eyes more than lower one.
More LED with lower current each will be more efficient (cooler) than single high current LED.
I use the 4000K 90CRI XP-G3. The heat dispersion will be more than fie in that cube, as long as the leds are on a DTP copper board and there is a sufficient connection for the heat to get to the shell of the cube.
My scooter also don’t use any kind of heat sinking, enclosed in an airtight plastic casing at that power level. Just plain non DTPMCPCB (generous double sided copper pour)
Nice comparison Badhakker. I believe the 3 steps will be consistent across batches although greener. The best bin for those rosy Nichia lovers will be to selectively binning the 7 steps to get anything below the black body locus.
www.virence.com
Physical and thermal properties of solder alloy - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium - Tech Ingredients
Congratulations badhakker, you did a really good job of exhibiting the variety of 4000K Nichia tints.
To avoid having to scroll during comparisons, I put them in an animated GIF to bump the post, and compare the sequence you listed in another format.
New sale thread with new Nichias: http://budgetlightforum.com/node/52244
www.virence.com
Physical and thermal properties of solder alloy - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium - Tech Ingredients
Find Texas_Ace member. Then look at his signature posts. He did many tests using the LED from this group buy and more. Should give you the big picture
www.virence.com
Physical and thermal properties of solder alloy - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium - Tech Ingredients
I have both leds in triple flashlights and indeed the tints are different the way you described. But their spectra should not be all too different, so they should be as good for your purpose. The XPG3 triple is my bicycle light and it is excellent for that.
I would think too that such a cube will handle the 3A, if the mounting of the ledboard is done right, since a simple 18650 tube light already can handle that.
link to djozz tests
I used 4× 5000K 9080 E21A @350ma for my scooter. The OEM was 6500K low CRI Stanley LED.
Most often glaring is produced by non road legal headlights with no sharp cut off. In my case I’m lucky to have a very good headlight reflector to begun with.
But indeed cooler temp irritates eyes more than lower one.
More LED with lower current each will be more efficient (cooler) than single high current LED.
www.virence.com
Physical and thermal properties of solder alloy - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium - Tech Ingredients
I use the 4000K 90CRI XP-G3. The heat dispersion will be more than fie in that cube, as long as the leds are on a DTP copper board and there is a sufficient connection for the heat to get to the shell of the cube.
link to djozz tests
My scooter also don’t use any kind of heat sinking, enclosed in an airtight plastic casing at that power level. Just plain non DTP MCPCB (generous double sided copper pour)
www.virence.com
Physical and thermal properties of solder alloy - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium - Tech Ingredients
http://budgetlightforum.com/node/52244
www.virence.com
Physical and thermal properties of solder alloy - Shooting Beamshots With HDR - Nichia E21A Tint Shots
Its Okay To Be Smart - SmarterEveryDay - Deep Look - Veritasium - Tech Ingredients
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