Got an interesting samples from Nichia today. One of them is this Nichia NVSU233A-D1 U365. For me, the most interesting feature is the narrow emission angle: 60 degree total included angle, narrower than Cree XR-E!. Perfect for zoomie, or even any builds without secondary optics. I talked about this little UV to Jos and planned to include one sample for him earlier. Unlucky him, I got the package just when I went back home after I shipped those LED from the last Nichia group buy.
Oh, this one has 119A/B/C footprint. Djozz board or VirEnce S3030 should work just fine.
Judging by the substrate colour, it isn't the common Aluminum Nitride like the other Nichias. Looks like it's made of Silicone Carbide.
Great macro-pics, the first good ones for this led on the internet!
I’m really looking forward to this led, should be a bit better than the best one I had sofar. Will do an output test but without pushing it too far, I love to do a flashlight build with it!
Not possible without focus stacking. I took 3 pictures with different focal points. Recombined them to get the widest possible depth of field.
Jos, this is the P6d22 rank (870mW - 950mW). second rank from total 7 available (P6d21 - P9d21). The highest rank is the incredible P9d21 (1460mW) which is too good to be true. Because the typical output is rated at only 1030mW (P7d21).
I’ll try to get the highest available at the expense of usually much higher Vf (assumption) if the price is right. So far I got confirmation it’s priced approximately 10-12 times the 3 steps 9050 219C.
Subscribed. UV research led me to BLF, then BLF taught me how to speed spend money :cry:
I have had 2 Cometa knock-offs for some time now and have been waiting for an opportunity to have one rebuilt into a nice 365nm. Could this possibly be a respectable mating? ( I would use it mostly to locate bio stains causing hidden odors in people-dwelling-structures.)
Also, if 365nm happens to light up precious stones during night walks, that would be a true bonus.
These look great and I’m very intrigued, but if I understand your comment above correctly, we can expect these things to cost ~$40-48 each. That’s…a lot. Still, I’m looking forward to seeing how further testing comes on these guys.
Dont forget the Convoy S2+ with the Nichia 276 Diode for 20.99$
Runs the diode at 700mA while it is specified to 500mA, about 800mW UV to be expected
Djozz got a custom board for those Nichia LEDs that provide more heatsinking
Another interesting diode in combination with ZWB2 filter that has a DTP electrical isolated footprint is the Lite On LTPL-C034UVH365
Costs only about 7.5$
Yup, USD 40 will be the minimum retail price. I don’t think I can supply BLF this one, too damn expensive.
I saw Lumitronix sell similar stuff, but can’t get the exact bin.
The main interests of this NVSU233-D1 are the narrow emission angle (more OTF output for some design) and the 1400mW (@1A) potential bin. Will confirm later if it’s available to the public
The LEDs got a really small die size with 1x1mm, so in reflector lights they perform well.
The narrow lens is nice for zoom lights but they need a glas lens.
Basically for an UV light the spill with a nice hotspot is more useful than a zoom.
The domeless in a reflector light like a Convoy C8 would be as great like a dedomed XPE2, still having a useful spill
I’ve wanted to make a uv flashlight for a while but cannot seem to decide on an emitter. I only want to make one so I want it to be good. The emitter in the op sounds nice but it is expensive however, I am afraid I will be dissapointed with anything cheaper. Yes, I know… this is the story of our lives
The convoy S2+ with Nichia and Djozz board is great
you get about 1W of UV which is powerful enough for most purposes
even greater with Filter
the only downside is that when the battery falls below 3.9V the LED gets dimmer continously as it has a high forward voltage
but I did not find any 18650 driver that boosts to 4V
The thing is any UV emitter from a good brand with filter is great
as the visible wastelight gets absorbed
most affordable Emitters get to 1-1.5W with a little more current over the manufactors rating
here you can find a full test of 13 UV lights with different emiters
Great tests! But unfortunately no NVSU233-D1 365 (60 degree type) tested.
I’m wondering why Nichia never launch any white LED with such narrow primary optics? Cheaper for lights manufacturer because they could possibly eliminate complicated optic systems and boost output in certain applications such a desklamp for example.
Osram has the SSL-80 with the narrow angle, it has a small XP-E size die. The Oslon Square, with larger XP-G size die does not come in a narrow angle dome. So I think that the narrow emission angle domes do not work well with larger dies and are therefore necessarily limited in output. Perhaps that is why Nichia does not see the merit of such a led.
