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Thread: pictorial review of LEDs

  1. #1
    *Flashaholic* Illum's Avatar
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    Talking pictorial review of LEDs [lotoPics Warning]

    Modified from a previous thread concept due to lack of physical differences between CREE editions. Now its a somewhat ideal platform for visual references.

    scratched LuxIII star


    LuxV in my L4


    USWOL SSC emitter


    7060 XR-E in my P1-CE


    7090 Q4 in My L0D-CE


    If has different versions of LEDs could you post a pic?
    Last edited by Illum; 05-25-2009 at 11:54 AM. Reason: Rehosting

  2. #2
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    Default Re: pictorial review of LED generations?

    here is some weird ones, just to keep your thread going.


    that 20w thing



    that seoul AC thing
    Last edited by VidPro; 02-07-2008 at 08:34 PM.

  3. #3
    *Flashaholic* Illum's Avatar
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    Ohgeez OSRAM versus Luxeon 5

    Seoul AC?
    you actually managed to acquire one? kool

    might as well add some more myself
    source: http://www.candlepowerforums.com/vb/...d.php?t=115286
    OSRAM OSTAR LE W E3B, 6 die..its a beauty


    the OSRAM compared to a LuxV [source: www.tauchfunzel.de/]


    OSRAM OSTAR 4die [source:www.pro-light.jp]


    Comparison between Ostars


    OSRAM products: Ostar listing
    http://catalog.osram-os.com/catalogu...t=showBookmark

    Last edited by Illum; 06-01-2009 at 06:01 PM.

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    Flashaholic* Fallingwater's Avatar
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    Default Re: pictorial review of LED generations

    http://home.comcast.net/~trivalvid/20W-4.JPG

    Why would anyone want to put dies in that weird position? Why not a square or a rectangle?
    This looks more like something out of a 1980 videogame.
    Eat, drink and be merry, for tomorrow you may die.

  5. #5
    *Flashaholic* Illum's Avatar
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    Default Re: pictorial review of LED generations

    Quote Originally Posted by Fallingwater View Post
    http://home.comcast.net/~trivalvid/20W-4.JPG

    Why would anyone want to put dies in that weird position? Why not a square or a rectangle?
    This looks more like something out of a 1980 videogame.
    I'm inclined to think its drawing low current to light the dies up but apparently the individual dies operate at slightly different currents

    With the help of a magnifying glass...I can finally count all the bondwires in one sweep



    trial 2


    TWENTY-NINE bond wires compared to SEVENTEEN for the P7
    Wonder why the P7 needed that big of a LED to fit 4 when it can easily fit like 16 if its fabricated like the MC-E

    Last edited by Illum; 06-01-2009 at 06:03 PM.

  6. #6

    Default Re: pictorial review of LED generations

    Awesome thread. I'm adding it to the Welcome Mat.

    SSC USW0I:


    XR-E Q2:


    XR-E Q5:

  7. #7
    *Flashaholic* Illum's Avatar
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    Wink2 Re: pictorial review of LED generations

    TigerHawkT3

    the SSC is a weird LED IMO...there are NO STRAIGHT EDGES under the dome...compared to luxeon/CREEs they have ABSOLUTELY NO SYMMETRY when you look at it from an angle, but the output is certainly very impressive for its size

    a couple more
    UFO Starfish LED, [rehosted from thread made by user Brlux][05212009 rehosted again]


    OSRAM Golden Dragon [I took apart my sylvania 4AA lantern, here posted post 122]


    OSRAM Platium Dragon LED


    Philips Rebel [more pics and info available at 100 Lumen Rebel technical evaluation, Rebel NVND]

    Last edited by Illum; 05-21-2009 at 06:04 PM.

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    Default Re: pictorial review of LED generations

    Quote Originally Posted by Illum_the_nation View Post
    I'm inclined to think its drawing low current to light the dies up but apparently the individual dies operate at slightly different currents
    that is correct, it is being driven to just where parts of it light up, and its a bit sloppy in gate precision.

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    Enlightened yo6ial's Avatar
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    Thinking Re: pictorial review of LEDs

    Here's one, perhaps less seen or common Cree led...
    of witch i could only guess the bin. It's a 6000+ kelvin tint, and at around 700mA pushes close to a SSC U-bin P4 driven at the same current.
    So it could be a Q5. Too close for my eyes to make a big difference, I'd say that the Cree seems to just a (tiny) bit dimmer.

    By yo6ial at 2009-02-03

    And.. i know, it's a bit offset. It's annoying me too.

    And a Chinese (One Watt'er )

    By yo6ial, 2009-02-03
    As bright as ...
    Not to mention that it gets hot too .
    Now, that's a real torch...


  10. #10
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    Default Re: pictorial review of LEDs

    Here are a few pictures that I posted in another thread. I could have sworn that I had found a similar thread to this but now I can't find it anywhere.

    SSC P4 (supposed to be U-bin)


    SSC P7 (not sure about the bin)


    Luxeon III (I think)


    Cree XR-E (unknown bin - thinking it's Q5)

  11. #11
    Flashaholic* was.lost.but.now.found's Avatar
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    Default Re: pictorial review of LEDs

    Quote Originally Posted by PCC View Post
    Here are a few pictures that I posted in another thread. I could have sworn that I had found a similar thread to this but now I can't find it anywhere.
    Nice macro shots. It that the phosphor you can actually see on the P4!!??

  12. #12
    Enlightened brightarc's Avatar
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    Default Re: pictorial review of LEDs




    Cree MC-E WC K bin

  13. #13
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    Default Re: pictorial review of LEDs

    Yes, I believe so.

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    Default Re: pictorial review of LEDs

    Quote Originally Posted by PCC View Post
    Cree XR-E (unknown bin - thinking it's Q5)
    It's at least a warmer tint. Strange how the die is crooked and phosphor layer has ragged edges. Better than SSC's strategy of just piling a glob of phosphor on top of the chip and encapsulating the whole kaboodle...

    Neat pics, wish this thread were more alive.

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    *Flashaholic* Illum's Avatar
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    Yellowlaugh CREE comparisons NW+WW+W100 et al.

    heh, glad to see this thread came back to life...

    Quote Originally Posted by bshanahan14rulz View Post
    It's at least a warmer tint. Strange how the die is crooked and phosphor layer has ragged edges. Better than SSC's strategy of just piling a glob of phosphor on top of the chip and encapsulating the whole kaboodle...

    Neat pics, wish this thread were more alive.
    Interesting...I've never seen a LED with a die that crooked before. As for the Jagged edges, thats an optical illusion looking through the jelly dome. Rather than being completely transparent, its something else altogether. Its usually not noticeable if theres low contrast between the upper phosphor coat and the lower but in this case it illustrates it very well.

    More LuxVs...


    Nichia CS


    Neutral White


    Warm White


    W100 "Q4" [lol, a complete lack of phosphor IMO]


    Luxeon I Lambertian [Red]


    the M-bin MC-E that now resides in my L4


    Edison RGB 3 Watt Fullcolor EP3M-4S00
    Last edited by Illum; 06-01-2009 at 05:43 PM.

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    Flashaholic* rizky_p's Avatar
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    Default Re: pictorial review of LEDs

    nice posting, those some old leds bring back memories. oh the tears and sweat
    M@g 623->633, M@g 250, M@g 5761, Penta Cree Q2 M@g (Maxflex), 35w HID Spotlight mod,
    M@g Aspherical Q5, M@g P7, Triple M@g P7(DW)

  17. #17
    *Flashaholic* Illum's Avatar
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    Default Re: pictorial review of LEDs

    Quote Originally Posted by rizky_p View Post
    oh the tears and sweat

    of frantically ripping them out then trying to revive them after your mods are done? yeah...

    Cyan Side Emitter


    Lumina Ceramic


    SSC P9
    Last edited by Illum; 05-25-2009 at 11:53 AM.

  18. #18

    Default Re: pictorial review of LEDs

    Good pictures. Thanks for uploading.

    This could be a silly question, but also could be an important one... so... let me ask it.

    Can anybody tell what's the visible difference between P4,Q2,Q3,Q4,Q2 and R2?

    I hate when manufacturer made everything looks the same for whole lot of different stuffs.

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    Default Re: pictorial review of LEDs

    Physically, I believe they're identical. Only way to find out the difference is to measure the amount of light coming out. The different flux bins are due to variation in manufacturing, just the random things that can't be eliminated regardless of how hard you try, so they make them then test them to decide which bin they fall into.
    Finning does help dissipate heat. This is why the fins are removed before cooking fish. Otherwise it will throw off the heat and not reach the proper cooking temperature. --Duglite

  20. #20

    Default Re: pictorial review of LEDs

    AWSOME!!!, where do you guys buy or get that kind of LED's?

  21. #21
    *Flashaholic* Illum's Avatar
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    Default Three wires versus four

    Quote Originally Posted by seaside View Post
    Can anybody tell what's the visible difference between P4,Q2,Q3,Q4,Q2 and R2?
    there are no stupid question here
    N2, N4, P4, Q2, Q3, Q4, Q5, R2, possibly R4 are all representation of flux within the CREE XR-E series, so essentially they are treated the as the same type of LEDs off the forum. Not sure if you were with us back in 2006, when Lumiled luxeons were distinguished between voltage "bins" and tint "bins." CREE N4, P4, possibly Q2 earlier versions you should be able to find only three gold bond wires underneath the jelly dome, the later versions, a fourth bond wire was used to increase the amount of current the LED can receive, plus an increase in the "plateau" under the LED die space.


    heres a CREE XR-E "P4" I used for another project, notice theres only one bond wire coming from the positive end?

    to increase the amount of power CREE added a second bond wire, with the addition of a bigger die platform.
    XR-E Q5 from Zebralite H50


    unfortunately after the Q4, every succeeding flux have 4 bond wires, I have looked on the surface of the LEDs, on the base, back of the case, etc...no dice. Unlike Luxeons... CREEs does not have the habit of printing their bin numbers somewhere on their star

    Quote Originally Posted by Coolricks View Post
    AWSOME!!!, where do you guys buy or get that kind of LED's?
    that depends on that your looking for...
    theres no "all-in-one" place to find all LEDs as they are often designed for vastly different applications. If you can point out which LED that interests you I might be able to retrieve a couple links regarding where you may purchase them from
    Last edited by Illum; 06-01-2009 at 05:45 PM.

  22. #22

    Default Re: pictorial review of LEDs

    To a newbie, this is a great pictorial resource. thanks for the photos!

  23. #23
    *Flashaholic* Illum's Avatar
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    Default XR-E versus XR-C

    hosting pictures of the XR-C LED in my new Life Gear 1AA with comparison to previously hosted XR-E W0100 "Q4"

    XP-C


    XR-E


    I hope this will finally relieve issues between the differences in the two types. The XR-C has a significantly smaller die surface, which makes it easier for collimation...but a decreased output relative to the XR-E under the same driving specifications.
    Last edited by Illum; 05-25-2009 at 11:54 AM.

  24. #24
    *Flashaholic* Illum's Avatar
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    Default The CREE Ring

    I just noticed that the silver ring on CREEs have the top rounded but the bottom chamfered instead of sitting squarely on the substrate





    Last edited by Illum; 06-01-2009 at 06:03 PM.

  25. #25
    *Flashaholic* wquiles's Avatar
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    Default Re: pictorial review of LEDs

    [QUOTE=Illum;2962284]I just noticed that the silver ring on CREEs have the top rounded but the bottom chamfered instead of sitting squarely on the substrate

    (snip pics)

    GREAT job on the macro photos

    WIll
    Please no PM/Visitor Msg's. Email for questions/Paypal: wquiles [at] gmail {dot} com

  26. #26
    *Flashaholic* Illum's Avatar
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    Default Re: pictorial review of LEDs



    I've been wondering if I can remove the ring without damage so while looking for a place to pry from I noticed that the bottom half of the ring seems offset a bit...and the camera did a very good job telling what I need to know...now I just need some guts to actually pry one

    I wonder why theres toothmarks on my CREE substrates...I have yet to look at other CREEs.
    Last edited by Illum; 05-24-2009 at 08:02 PM. Reason: eek!

  27. #27
    *Flashaholic* Mr Happy's Avatar
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    Default Re: pictorial review of LEDs

    Quote Originally Posted by Illum View Post
    I've been wondering if I can remove the ring with damage...
    In that case, just hack away!

  28. #28
    *Flashaholic* Illum's Avatar
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    Default Lateral proportion of LEDs XRE-Luxeon-MCE

    LuxDrive CREE XR-E


    Lumiled Luxeon [excuse the fuzz]


    [Cutter?] MC-E mounted on a 8 Pin star [individually addressable dies]
    Last edited by Illum; 06-01-2009 at 05:51 PM.

  29. #29
    *Flashaholic* Illum's Avatar
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    Default Miscellaneous pics...

    weird LEDs... [rehosted from thread made by user frenzee]



    River Rock 2AAA LED, 3 die [rehosted from thread made by user Kyrosphinx]



    Lumiled Superflux [4 pin]



  30. #30
    *Flashaholic* Illum's Avatar
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    Default MCE Trails

    Mods, sorry for so many posts...been meaning to do some organization by categorizing specific elements under different titles for easier referencing.

    There is a "black square" where the positive pin literally connects to the negative pin. I think it might actually be a diode for reverse current protection but I'm not sure.

    Short dash = "diode" bondwire
    long dash = solid [not bind wire] connection
    Solid = bond wire connection

    MC-E


    MC-E Highlighted

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