Hi
So what’s the chances of yuji making LEDs for flashlights ?.
I’m really after a 5600k hcri for an 18650.
What do you think Djozz?.
Thanks.
Hi
So what’s the chances of yuji making LEDs for flashlights ?.
I’m really after a 5600k hcri for an 18650.
What do you think Djozz?.
Thanks.
The XP-G3 is available in High CRI (>90) all the way up to 6000K or 6500K.
I have some of the 5000K High CRI, they are very nice. Cutter sells them, not sure if they’re OOS at the moment or in stock.
-Michael
Thanks
You got a link for xpg 3 - maybe a 5700 or 6000 80/90cri please?.
Thanks.
Here’s a 5000K, >90 CRI, R3 flux, XP-G3. No info on specific tint bin.
Here’s a 5700K, >90 CRI, R3 flux, XP-G3. Same as before, tint lottery
Amazingly, I can find the 6000K 90 CRI, even the 6500K 90 CRI. But with a MOQ of 1000 @ .70-80¢ each, non-stocked but available with an 8 week factory lead time.
I need to order some of the 5700K just to satisfy my curiosity lol!
-Michael
How in the heck do you search arrow? I can not figure out how to narrow the search to any of the Cree LED’s that we are interested in here. They have free shipping this month apparently and I would like to grab a few high CRI LED’s in the ~4000k range.
They are one of the hardest to figure out search/inventory systems I have seen.
On Tuesday, 13 September 2016, Nicklaus Mei <nicklaus.mei@yujigroup.com> wrote:
Dear Darry,
Thank you for your inquiry. My name is Nicklaus who is a representative of Yuji Group.
We do not have plans for flashlight LEDs.
I have attached our Brochure for you, please have look.
Have a nice day.
Best regards,
——————
Nicklaus Mei
International Business Manager
Yuji International
High CRI LED Webstore
Tel: +8613681386126
Skype: Nicklaus.mei@outlook.com
I usually start with a partial series part number, especially on mobile. That will usually hit all variants they have. Try XPGDWT for example, that will show all XP-G3s. On desktop, you could click a sub-category or “filter”. IDK why, but the “filter” selection sucks on mobile. On a regular browser it usually gives you more filters like high CRI or Kelvin, but not on mobile.
The filters are where it’s at, Arrow, Mouser, DigiKey, et. al.
Not much, but hope that helps.
-Michael
I usually start with a partial series part number, especially on mobile. That will usually hit all variants they have. Try XPGDWT for example, that will show all XP-G3s. On desktop, you could click a sub-category or “filter”. IDK why, but the “filter” selection sucks on mobile. On a regular browser it usually gives you more filters like high CRI or Kelvin, but not on mobile.
The filters are where it’s at, Arrow, Mouser, DigiKey, et. al.
Not much, but hope that helps.
-Michael
Yeah, I finally figured out that searching the part number narrowed it down but sadly the filters do not seem to work worth a flip. Heck they don’t even offer filters for most of the things that would normally narrow down what you want (CRI, bin, tint ect).
After a bunch of part number searching, I found the one 90 CRI you posted then 2 80 CRI leds in the 3000k range. Since they have free shipping right now I ordered one of each and an XP-L with 90 CRI just to see what they look like.
On Tuesday, 13 September 2016, Nicklaus Mei <nicklaus.mei@yujigroup.com> wrote:
Dear Darry,Thank you for your inquiry. My name is Nicklaus who is a representative of Yuji Group.
We do not have plans for flashlight LEDs.
I have attached our Brochure for you, please have look.
Have a nice day.
Best regards,
——————
Nicklaus Mei
International Business Manager
Yuji International
High CRI LED Webstore
Tel: +8613681386126
Skype: Nicklaus.mei@outlook.com
Thanks for reporting.
I have no insight in what Yuji really wants and is able to, but as I understand it is foremost a company that makes phosfors that has got into making leds as well. Therefore I would not be surprised if they do not manage to obtain the efficiency that the big led manufacturers are getting, and that they also lack the technology to get the heat management of their leds at a level that is needed to make high power single die leds.
Re Yuji LEDS in flashlights;
Dear Darryl,
Thanks very much for your advice. I just discussed it with our product manager.
She said it is a good idea, and I suppose this will be add into our latest R&D plan.
Really appreciate your suggestion.
Have a nice day.
Best regards,
——————
Nicklaus Mei
International Business Manager
Yuji International
High CRI LED Webstore
Tel: +8613681386126
Skype: Nicklaus.mei@outlook.com (link sends e-mail)
… On desktop, you could click a sub-category or “filter”. IDK why, but the “filter” selection sucks on mobile. On a regular browser it usually gives you more filters like high CRI or Kelvin, but not on mobile.
The filters are where it's at, Arrow, Mouser, DigiKey, _et. al._
Not much, but hope that helps.
-Michael
Michael, you can open most desktop sites on mobile “by default”: just use a browser allowing you to select a desktop user agent. Check this out:
Android Opera browser with desktop user agent; it is based on the Chrome browser engine, without (imho) the annoying “link disambiguation pop-ups” the morons at Google are adamant to give their mobile users the option to disable. Android Chrome also doesn't gives you the option to select/customize the user agent, albeit it can be done on a rooted system with a sort of hack.
Despiser of eBay mobile too? Bookmark this: http://www.ebay.com/?redirect=mobile
Hope this helps.
Cheers ^:)
Hello, a basic question - I’ve recently moved into a new apartment, and I am getting a little interested in getting the lighting done nicely, so I’ve just started researching a little.
High CRI bulbs seem very interesting to me - I was wondering: do they also improve the lighting you get from a transparent lamp? Or does the “passage” through glass (or whatever it might be) lower the colour-rendering ability of the light emitted from the bulb?
So is it worth buying bulbs with high CRI for lamps like these:
Examples:
HÖLJES Loftlampe, hvid - IKEA (this one completely encloses the bulb - all light goes through the glass)
Casanova Furniture | Stort udvalg af Casanova møbler | Køb Her (I think some light is projected directly downwards from the bulb, ie not through the glass)
Hi Anders,
That should be no problem, white lamp shades should not alter the spectrum of the light that goes through it much (that the shade is pure white quite tells that already )
Btw, if your goal is common 2700K indoor lighting, you are pretty well off with IKEA bulbs, they do not advertise it but the newest range is over 90CRI (it tells the CRI on the package).
High CRI bulbs seem very interesting to me - I was wondering: do they also improve the lighting you get from a transparent lamp? Or does the “passage” through glass (or whatever it might be) lower the colour-rendering ability of the light emitted from the bulb?
So is it worth buying bulbs with high CRI for lamps like these?
You should think about like that: A transparent lampshade wont change the color cendering.
It is worth buying CRI bulbs for these lamps if you want high CRI.
You can read more about high CRI lamps here:
ledbenchmark.com
store.yujiintl.com/collections/high-cri-led-lights
ledon-lamp.com/produktvorteile/
ledon.de/produkte
I just visited the yuji store because I was thinking of buying a few more led bulbs (the ones that I got two years ago have proven to be great and reliable), but it appears that they have less and less types of bulbs, and no GU10 bulbs anymore which was what I was looking for
In bare leds they have a few more types than two years ago, but no high power leds (yet).
no GU10 bulbs anymore which was what I was looking for
Philips Hue GU10 has good CRI too:
http://www.ledbenchmark.com/list.php?order=16&fitt=2&voltage=2
Or the “made in Germany” Osram LED-Spot:
ledvance.de/tech/produkte/index.jsp?productId=ZMP_1908846
led-centrum.de/LED-Leuchtmittel/led-strahler/LED-Strahler-GU10/
heise.de/preisvergleich/?cat=hhleuchtled&sort=p&xf=1299_GU10
I really do not notice it by eye so it is a bit neurotic perhaps, but all Philips and Osram bulbs to date have a ripple in the light output, it is easily caught with my phone camera. My go-to high CRI bulbs atm are the 90+ CRI 2700K Ikea bulbs (they also have a 80 CRI series but the current Ledare series are 90+ CRI and have a lovely tint). But also these have a (less than a lot of Philips and Osram bulbs) ripple:
(This is the latest Ledare 400lm GU10 bulb, picture under-exposed for clearness of ripple)
The two Yuji bulbs that I have are completely ripple-free.
There are flicker-tests on some german website:
Eine Übersicht aller LED-Testberichte in diesem Blog - viele davon mit Labor-Messwerten. Die neuesten Beiträge stehen an der Spitze, die älteren unten.
Also flicker-free and high-CRI lamps are available:
Wie gut sind zwei neue, nicht dimmbare, „warmweiße“ GU10-LED-Strahler von MeLiTec mit nominell Ra >95 und 345 bzw. 500 Lumen? Ein Test mit Labor-Messwerten.
Ein echter Geheimtipp waren die „GreenLight“-LED-Lampen, die's Ende August bei Netto gab. Zwei Stichproben-Modelle konnten im Test fast durchweg überzeugen.
Ab 1.9. sollen Halogenstrahler aus der EU verschwinden - zugunsten von LED-Retrofits. Dazu im Test: Ein farbtreuer GU10-LED-Strahler von „Green Power“.
Aldi Nord wirbt ab heute unter anderem mit sehr farbtreuen MeLiTec-LED-Lampen ab 2,99 Euro. In meinem zweiteiligen Test nehme ich mir sechs Modelle vor.
Fast perfekte Halogenstrahler-Imitationen bieten zwei neue, helle, flexible und sehr farbtreue „Sunset Dimming“-LED-Leuchtmittel von LEDON aus Österreich.
Mit jeweils doppeltem Schalterdruck können Sie beim neuen 5 Watt starken "GU10 3Color"-LED-Strahler von Sebson drei weiße Farbtemperaturen auswählen.
Ab sofort glänzen die neuen LEDON-LED-Spots endlich mit Farbwiedergabe Ra >90, weißem Gehäuse und frischem Design. Zwei Modelle waren im Test und im Labor.
Ab kommenden Montag kriegen Sie bei Aldi Nord großteils sehr farbtreue MeLiTec-LED-Lampen. Die 14 nicht dimmbaren Modelle sind aber keine echten Neuheiten.
Die dimmbaren Megaman-"Mellotone"-Retrofits leuchten in jeder Helligkeitsstufe "extra-warmweiß"; die "Dim-to-Warm"-Lampen werden beim Dimmen rötlicher.
Or you go straight ahead to Ledon:
ledon.de/produkte?lampenform=8&sockel=19
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Yuji HighCRI 100W COB LED
YUJILEDS provides the highest CRI & highest quality LED lighting products. LED strips, LED modules, LED bulbs, LED luminaires, everything about high CRI LED lighting. Visit to see monthly offers and special events for discount and deals.
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Yuji HighCRI 100W COB LED
http://store.yujiintl.com/products/bc-series-high-cri-cob-led-bc160h-100w?variant=36275436103
That has very good specs: 100W and 6000 lumen in a 9mm diameter LES ! I see 32leds in there, so 3W/led, that is 1A per led. So at the rated 4A there must be 4 strings of 8 leds.
Still it is not flashlight material, if you want 6000 lumen flood in great CRI, you can make a triple or quad Nichia 144A and spend a third of the money, and the 6V voltage of the 144A is way more comfortable to achieve than 27V.