Anyone know what a Luxeon is?

[Navck]

I'm a flashlight person. I'll tell you that...
Whoever gets the correct answer wins a cookie.

[Ground Loop]

Luxeon is a line of fantastic LED module made by Lumileds.

These were probably the first practical LED replacements for incandescent bulbs that could run off batteries.

The Luxeon modules are usually mounted to a backing circuit board with some heavy heat sink abilities.. voltage regulators, etc.

I have a few bare modules and they're very bright (red), but they're best known for the white ones that make it into.. flashlights.

[Navck]

Wooow.
You're from CPF aren't you?

[thinklad]

Hey another flashlight fanatic... how many do you own?
Do you have any iNOVA lights?

I converted my interior lights in my jeep to LEDs. Luxeon stars for the main interior lights and normal LEDs for the footwell/convenience lighting.

(I know I'm a freak, no need to point it out )

[JHEM]

I'm a flashlight person. I'll tell you that...
Whoever gets the correct answer wins a cookie.

You'll get a LOT of responses from the pilots on the list!

Like me.

Santa gave everyone one of these in their stockings last Xmas: http://www.longlight.com/en/s_pro/pro_2000.php to put in their Jeppesen case.

Where's my cookie?

Flashlights? About 50!

Regards,

James

[GomJabbar]

A captain that I worked with before had a flashlight simular to the one in JHEM's link. The interesting thing about it was....that it was on all the time. There was always a dim light coming from it, and when you pressed the button, you got a bright light. No way to turn the light completely off. This LED flashlight was given to the captain by a ship pilot. Sorry, I don't know the manufacturer.

[JHEM]

Definitely faulty, none of the ones we have exhibit such behavior.

Regards,

James

[GomJabbar]

Not faulty. By design. The purpose is to be able to locate it in a dark environment, such as on the bridge of a ship at night.

Your statement compelled me to do a search. http://www.buckshotscamp.com/Flashlight ... -Sales.htm

EDIT: Here is a better link. It is the manufacturer's website. http://www.palights.com/

[amgdoc]

sweet, this is cool. i want one too now.

[JHEM]

Not faulty. By design. The purpose is to be able to locate it in a dark environment, such as on the bridge of a ship at night.

Bridge flashlights are in chargers and you can always find them by the pilot light. SOLAS requirement.

If I'm headed out on deck to check the lashings on the stacks, I want LIGHT, something like you get from an X-Files flashlight, and no LED flashlight will provide it.

The LEDs we have for the pilots in the family are nice, but they're not a replacement for a good 3 cell Maglite when it comes to throwing lumens.

Regards,

James

[GomJabbar]

Not faulty. By design. The purpose is to be able to locate it in a dark environment, such as on the bridge of a ship at night.

Bridge flashlights are in chargers and you can always find them by the pilot light. SOLAS requirement.

If I'm headed out on deck to check the lashings on the stacks, I want LIGHT, something like you get from an X-Files flashlight, and no LED flashlight will provide it.

The LEDs we have for the pilots in the family are nice, but they're not a replacement for a good 3 cell Maglite when it comes to throwing lumens.

Regards,

James

I beg to differ. I have yet to work on a tug with a flashlight mounted in a charger. Then again I have yet to work on a SOLAS tug. SOLAS is something fairly new in the tug industry. Yes, the tugs that go foreign need to meet SOLAS requirements, but the coastwise domestic tugs do not (as of yet anyway). Since I have not yet worked on a SOLAS vessel I am only familiar with the more onerous SOLAS requirements. Althought I did use the word "ship" loosely, that does not necessarily negate what I said in the strict form of the word. Who says there can only be one flashlight on the bridge of a ship?

There are some very bright LED flashlights available these days. Your 3 cell Maglite throws 39 Lumens of light according to this site: Action-Lights.com. This Pelican LED light that uses 2 lithium CR123 batteries throws 41 Lumens of light: Pelican M6 LED. In fact the first link shows that Maglite is coming out with a 3 cell LED flashlight in May of this year [however, I don't know what it's specs are].

You might be interested in this Maglite upgrade I ran across today. It upgrades a 3 cell Maglite to LED with 140 Lumens of light output! Luxeon K2 LED Bulb Replacement for Maglite C/D - White LED

Luxeon® K2 LED replacement bulbs!
Upgrade your Maglite® C & D Flashlights
to the ULTIMATE new light source!!!
Our NEW Diamond® LED bulb replacements use
the latest U.S.A. technology from Silicon Valley
(Jan 30, 2006) Luxeon K2 LED's which will produce
more than 140+ Lumens or 6½ Watts in White!!

Diamond® White LED Replacement Bulb
w/ Luxeon K2 for 2-6 Cell* Maglite®
*Optimum output with 3 cells, must use our Dummy batteries
for 4, 5 & 6 Cell use or you will burn it out.

[JHEM]

Three D cell Maglite throws 76.8 lumens, 82.5 with the Zenon bulb, not 39.

Let me know when they develop an LED light to rival this: http://www.peakbeam.com/index.html

I'm very familiar with the flashlights carried on tugs, especially the results that arise from their improper use. Like using a K-Mart special on a product barge. Can you say "ka-BOOM!", I knew you could. There's a reason Factory Mutual (FM) approved flashlights exist.

Regards,

James

(PM sent also.)

[BillMorrow]

AND a Bird wearing a Crown

[GomJabbar]

Let me know when they develop an LED light to rival this: http://www.peakbeam.com/index.html

Well............. can't top that!

I believe I saw one of those several years ago at "The International Workoat Show" in New Orleans - which was held in the Superdome at that time. The light was quite impressive. You could see a bright spot on the roof of the Superdome from a flashlight being demostrated on the main floor.

[JHEM]

Well............. can't top that!

Yep, the infamous "X-Files" flashlight.

Costs about US$2K!

Ah yes, the IWS shows in NOLA! Like the 60's, if you can remember them, you weren't REALLY there.

Regards,

James

[Navck]

Three D cell Maglite throws 76.8 lumens, 82.5 with the Zenon bulb, not 39.

Let me know when they develop an LED light to rival this: http://www.peakbeam.com/index.html

I'm very familiar with the flashlights carried on tugs, especially the results that arise from their improper use. Like using a K-Mart special on a product barge. Can you say "ka-BOOM!", I knew you could. There's a reason Factory Mutual (FM) approved flashlights exist.

Regards,

James

(PM sent also.)

Horrible horrible lies, thats 75ish "from bulb", but if you add the reflector losses/lens loss - You get some horribly low number (Like 30 or less)

Good lights
www.surefire.com
www.arcflashlight.com
www.hdssystems.com

[JHEM]

Horrible horrible lies, thats 75ish "from blub", but if you add the reflector losses/lens loss - You get some horribly low number (Like 30 or less)

First, WTH is a "blub"??

Second, care to share the source for the Lumens number you posit?

I got my figure from MagLite's published standards.

Regards,

James

[Navck]

Bulb - My bad, I accidently did a typo there.
http://www.flashlightreviews.com/reviews/maglite_3d.htm (Multiply overall by 1.43 for a true output rating.)
Check that out, that gives you a realistic number after reflector/lens losses. Maglite recently doubled-trippled their "brightness" numbers. ( http://www.candlepowerforums.com/vb/sho ... s+mag+site )
Also, if thats truely 80 coming out the lens, you'll see a sudden drop in brightness due to how alkalines preform.
Did you also know that Maglite sues many manufactures that don't infringe them, just to put them out of buisness?

[GomJabbar]

Here is a link that describes lumens and peak beam candlepower. http://www.brightguy.com/brighttopics.php

Here is a link to a Maglite spec page. http://www.maglite.com/lampspecs_dcell.asp

The 6½ Watt, 140+ lumens, Luxeon® K2 LED replacement bulbs for the Maglite does seem to make a brighter flashlight.

[Navck]

GomJabbar - Watch out for marketing claims again}
Theres two differences in Lumen measurements
Some companys measure the "bulb" lumens, or where ever the source of light comes from.
Other companys measure "out the barrel" lumens, thats after all the losses you get from a reflector/lens/heating of a LED

Realistically, you should be getting 100 or so lumens off that K2 dropin.

[GomJabbar]

GomJabbar - Watch out for marketing claims again}

Yeah, I took a look at your links. Pretty interesting stuff. I'm finding out more about flashlights than ever. It's a shame that everyone can't use the same standard, so one could make easy comparisons.

[JHEM]

GomJabbar - Watch out for marketing claims again

Said warning also applies to Brightguy's website!

After reading the referenced page's section on safety flashlights, I wouldn't be using this guy as an expert were I you.

Regards,

James

[GomJabbar]

Said warning also applies to Brightguy's website!

After reading the referenced page's section on safety flashlights, I wouldn't be using this guy as an expert were I you.

It's just a site I ran across in the last couple of days. The only reason I got drawn into this thread is my comment about a flashlight I saw that you could not turn off. Been learning though.

However, I have been interested in LED lighting. I've got a metal shed in the backyard without electical power. I do not want to spend the money to run power out to it, but I would like to have an overhead battery powered light that was bright and efficient, like an LED star or something. Really, I want a fixture, not a flashlight or lantern. I want a pull cord or else wire it to a standard wall switch.

[JHEM]

http://www.buy-solar.com/solarshedlight.html

Regards,

James

[GomJabbar]

Thanks for the link, James.

[JHEM]

Thanks for the link, James.

You're welcome.

The thing actually works, and well. Got one for my SIL.

Regards,

James

[Navck]

Said warning also applies to Brightguy's website!

After reading the referenced page's section on safety flashlights, I wouldn't be using this guy as an expert were I you.

It's just a site I ran across in the last couple of days. The only reason I got drawn into this thread is my comment about a flashlight I saw that you could not turn off. Been learning though.

However, I have been interested in LED lighting. I've got a metal shed in the backyard without electical power. I do not want to spend the money to run power out to it, but I would like to have an overhead battery powered light that was bright and efficient, like an LED star or something. Really, I want a fixture, not a flashlight or lantern. I want a pull cord or else wire it to a standard wall switch.

Or you could make a setup with a Lamina LED and underdrive it at maybe 5 watts (They take 100 watts and make some crazy lumen number like 3000 when fully driven...)
LEDs get a exponental effieceny increase with the less power you put into them.

Find a 12 volt battery, have a DC-DC buck circut and hook it to a 5W luxeon, or two, then have a switch. You also can recharge by a small solar pannel possibly.

[hnq]

I'm still a noob compared to some of the other guys on the CPF forum - but wouldn't a flourescent light be yield more light? I read somewhere that flourescent lights are much more efficient than LEDs.

[christopher_wolf]

It depends on the situation; most LEDs are about 2 times more efficient than Fluorescents. Dim them somewhat and you get better efficiency as opposed to keeping them at max intensity.

For example, suppose you want to provide light to grow plants with. LEDs aren't more efficient in that case; you would rather use fluorescents instead. Most LEDs tend to cost more than a fluorescent lamp of the same output. Plus, you have to worry about the wavelengths of light transmitted since photosynthesis occurs more efficienty at certain wavelengths.

All depends on what you use them for.

[hnq]

I found the link on CPF.

http://www.candlepowerforums.com/vb/sho ... lourescent

I only made it as far as the 4th or 5th post, but there's a lot of good info in there on LED vs. Flourescent vs. incandescent.