What does TWOJ stand for- it's not in the Acronyms

[srvctec]

What does TWOJ stand for- it\'s not in the Acronyms

What does TWOJ stand for- it's not in the Acronyms link above. Trying to learn as I go.

/ubbthreads/images/graemlins/confused.gif

 

[cy]

Re: What does TWOJ stand for- it\'s not in the Acro

welcome to cpf bin codes explained

 

[Sigman]

Re: What does TWOJ stand for- it\'s not in the Acro

srvctec, Off topic but NICE pics!

 

[Darell]

Re: What does TWOJ stand for- it\'s not in the Acro

Was going to be a booger and say "Totally White Orange Juice" but decided that wasn't going to help anybody. After looking at the page that CY linked to, it may make even more sense to hear that TWOJ specifically means;

T brightness (the best you can get today - unless you believe the "U" rumors!)
WO color (about as white as white gets, without actually being white...)
J forward Voltage (about as low (good, typically) as it gets today)

Does that help more than the stupid comment that I *was* going to post? Hope so! /ubbthreads/images/graemlins/smile.gif Welcome aboard.

 

[Dr_Joe]

Re: What does TWOJ stand for- it\'s not in the Acro

[ QUOTE ]
Darell said:


T brightness (the best you can get today - unless you believe the "U" rumors!)


[/ QUOTE ]
Let's talk about those rumors ! /ubbthreads/images/graemlins/wink.gif

 

[mattheww50]

Re: What does TWOJ stand for- it\'s not in the Acro

I am quite certain U does exist (like the X bin Lux V), but few if any ever reach the open market. Manufacturers (and customers) get very possessive of exceptional product. In the late 1980's we built a mass storage device using a physical interface (ESDI) HDD, and we probably bought upwards of 2000 Seagate ST4384 383mb HDD's.
I had one come through where the flaw map (defect list) on the HDA was blank. I assumed it was an error, and put it on our tester. No error, it really was flaw free. I mentioned it to our saleman, who wanted to see it. He notified the factory, and the factory was prepared to pay a substantial premium to get that particular one back. I later learned that about one HDD in 10,000 in that era ended up with zero media defects.

 

[Chop]

Re: What does TWOJ stand for- it\'s not in the Acro

srvctec,

As you learn while you go, you'll notice that many on the forums speak of finding that almost all elusive white luxeon. As Darell said, the WO color bin is the whitest of the white, without being white.

What most seek when choosing a luxeon is something that caters to their tastes by NOT exhibiting a certain tint. Many do not like yellow and therefor avoid the X1 bins. Some do not like green (however slight it may be) so they avoid the VO or V1 bins.

When you hear references to cooler tints, people are usually talking about tints that lean toward the blue side. When you hear references to warmer tints, these usually refer to tints that lean toward the yellow, or even green side.

Not to long ago, I lucked out and fell upon some TX1J luxeons. They turned out to be some of the whitest I've ever seen. The binning is mostly a general guide rather than a hard line. I've seen WO bins exhibit excessive warmth and XO bins that weren't cool at all.

 

[idleprocess]

Re: What does TWOJ stand for- it\'s not in the Acro

Check out the "Luxeon binning" link in my sig for something more concise than the previous link.

 

[wasBlinded]

Re: What does TWOJ stand for- it\'s not in the Acro

Chop - I'm a little puzzled. The VO bin is a "small" one right on the BBL so should be yellowest of all the bins, while the X1 and V1 bins appear closer to the green of the CIE chart.

I take it that your experience has been that VO is frequently greenish?

If anyone else has experience with VO tints, I would be curious to hear about it. I keep thinking that a VO would be the best tint for outdoor throw, since there is less of the blue which gives so much backscatter with atmospheric particles and moisture.

 

[Hoghead]

Re: What does TWOJ stand for- it\'s not in the Acro

[ QUOTE ]
wasBlinded said:
Chop - I'm a little puzzled. The VO bin is a "small" one right on the BBL so should be yellowest of all the bins, while the X1 and V1 bins appear closer to the green of the CIE chart.

I take it that your experience has been that VO is frequently greenish?

If anyone else has experience with VO tints, I would be curious to hear about it. I keep thinking that a VO would be the best tint for outdoor throw, since there is less of the blue which gives so much backscatter with atmospheric particles and moisture.

[/ QUOTE ]

I have three TVOK emitters driven at 750ma. They have a warm tint. They seem to have a yellow tint whan compared to a TWAK. Chop has seen a lot more Luxeons than I have. I've only seen about 100.

 

[Chop]

Re: What does TWOJ stand for- it\'s not in the Acro

Guys,

This is why I don't like expressing opinions about these sorts of things. The binning system isn't even close to be perfect, although it is better than it was a couple of years ago.

I still see TX1Js that are white, white and TWOJs that look at little yellow/green in the center.

As I said, this particular batch of TX1Js that I have gotten were stellar; however, the batch that I had gotten before these sucked. They had a definite green tint. Alot of those wound up in either the garbage or as give aways. I've seen TVOs and TV1s that were stellar, but I've also seen some that weren't.

I suppose the point is that there are no guarantees, so the binning structure is more of a rough way of categorizing the luxeons.

For me, if I want to be safe, I go with TXOs. I've never seen an XO color bin that had any green in it. The YOs are nice too, but too blue for my taste. Of course I'm talking about the luxeons that I use for customers. I personally prefer the yellow tints. They shoot a ray of sunshine that really lights thing up outdoors.

 

[srvctec]

Re: What does TWOJ stand for- it\'s not in the Acro

/ubbthreads/images/graemlins/thanks.gif Thanks everyone for all of the great detailed info! I was really in the dark (pun intended!) on some of the terminoligy relating to LED lights.

Thanks to Sigman for the compliment on my pics.