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Thread: XM-L Reflectors & Optics

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  1. #1
    Flashaholic* LilKevin715's Avatar
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    Default XM-L Reflectors & Optics

    Here is a quick comparison of different types of P60 reflectors on a XM-L. I thought it might be useful to anyone interested in different types of beam patterns, building their own modules, etc.

    Shots are underexposed to show the hotspot better, light is about 0.5m away from the wall.

    1) Solarforce XP-G SMO
    2) Solarforce XM-L SMO
    3) XP-G OP (modified)
    4) Thrunite XM-L OP
    5) XR-E OP
    6) XR-E SMO

    Observations:

    1) Solarforce XP-G SMO Reflector
    Good amount of throw due to the deeper reflector from the Solarforce module. There is one transition step from hotspot to spill.

    2) Solarforce XM-L SMO Reflector
    Highest amount of throw (hotspot lux) I have seen for a P60 XM-L reflector. There is a faint clover/petal pattern from hotspot to spill.

    3) XP-G OP Reflector (modified)
    Medium beam with decent hotspot. Transition from hotspot to spill is VERY smooth.

    4) Thrunite XM-L OP Reflector
    Very floody beam due to the short reflector depth. Large fuzzy hotspot with lots of spill.

    5) XR-E OP Reflector
    Floody but useful beam. Hotspot is decent and lots of spill.

    6) XR-E SMO Reflector
    Similar to XR-E OP but with higher lux/intensity. The transition from hotspot to spill was interesting, almost like a bullseye target.


    Conclusion:
    XR-E reflectors for floody beam, XP-G reflectors for medium beam. Irreguardless of reflector choice the XM-L in a P60 form factor will be floody in nature due to the larger emitter size.
    Last edited by LilKevin715; 07-09-2011 at 07:18 PM. Reason: Images updated and fixed due to Forum crash

  2. #2
    Flashaholic* LilKevin715's Avatar
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    Default Re: XM-L P60 Reflectors

    Updated images have been uploaded since the original pictures were not linked correctly due to the forum crash. I've also added 2 more reflectors into the mix as well as some additional insight.
    My Mag Mods: SST-50 , XM-L

  3. #3

    Default Re: XM-L P60 Reflectors

    Hey thanks for the beamshots. I missed this thread the first time around. Glad you decided to update it.


  4. #4
    Enlightened
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    Default Re: XM-L P60 Reflectors

    Does anyone know any good cheap sources for XM-L P60 reflectors? I've only gotten XP-E reflectors with the empty drop-ins that I've purchased. I haven't found any sellers that specify anything beyond OP or SMO yet.

  5. #5

    Default Re: XM-L P60 Reflectors

    I use the XR-E reflectors that come standard, as long as it's OP you should get a good quality beam. Thanks for doing the comparison likekevin, is there a slight donut in the solarforce XM-L or is that just me?

  6. #6
    Enlightened
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    Default Re: XM-L P60 Reflectors

    I assembled my own XM-L drop-in and the beam was nice with the common XP-E OP reflector but the LED just didn't sit right against the reflector. Looking on the back of my Solarforce XM-L reflector, the opening seems a tiny bit larger, and a lot of material around the back of the reflector has been machined away so that it pushes against the emitter board only along the rim right next to the LED.

    I don't really have the proper tools to modify these reflectors nicely. Any tricks or suggestions? Where have you all been getting your XM-L reflectors if not in complete drop-in modules? Thanks!

  7. #7
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    Default XM-L (cree) Optics and Reflectors Thread

    Hi, I would have imagined that someone has already created a thread to accumulate information on various optics and reflectors for the Cree XM-L, but I could not find it.

    If not, then please feel free to post information, links, etc for any reflectors or optics you know of for the Cree XM-L. It would be handy to find beam shots, etc. as well.

    I don't use this LED much, but I have been asked to consider doing a project using this LED, so any information / links you have would be helpful.

    EDIT - well it turns out that someone had in fact started an XM-L reflector and optics thread - I just missed it. Thanks to DM51 for merging these threads.

    Thanks

    HarryN
    Last edited by HarryN; 07-09-2011 at 09:19 AM.
    Homebuilts - "BREEZE" RCR2 sidexside, "Tornado" 4 x 18650 side x side, Streamlight SL20x LED module (Custom BST Feeler Thread)

  8. #8

    Default Re: XM-L (cree) Optics and Reflectors Thread

    First place I would suggest to go is the Cree site for the spec sheet and links to the IES rayset and STEP file downloads:
    http://www.cree.com/products/xlamp_xml.asp

  9. #9

    Default Re: XM-L (cree) Optics and Reflectors Thread

    What beam angle does your project require ? as I have spent many hours looking for available optics and reflectors for the XM-L. Ledil has only a few for that led. I have used optics and reflectors made for the Cree MC-E with very good results as the size would fit without modification to the optic/reflector. As an example, for a nice even floody beam, I used a Khatod KCLP1278CR square reflector (almost impossible to find) that works perfectly for my projects that require a floody beam. For a tighter beam, I tried a Ledil CMC series made for the MC-E and they also worked perfectly. I always get my leds on a 20mm star as it gives me plenty of room to solder and fit the optic/reflector easily. Not really for flashlights but if you need a fixture/lamp or housing, they may do nicely, are cheap and readily available (except the Khatod). I know that Ledil has the Boom reflectors made for the MC-E and I Imagine that they will also work fine as I will purchase a few for my XM-L projects. Carlco by now should have at least a few since the XM-L came out a while ago. Same story there, as I would think that any optic/reflector made for the P7 Seoul or the MC-E should give satisfactory results, perhaps not 100% perfect but that is what we have now to work with. I hope that many varieties will be available soon made just for the XM-L since it is an extremely popular led.

  10. #10
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    Default Re: XM-L (cree) Optics and Reflectors Thread

    Hi, thanks for the replies.

    My part of the project is the "star" portion. I have been using some fairly decent thermal path MCPCB's that I have for Rebels and have been asked to do one for a single XM-L style "star" board.

    The "star" I have in mind is similar, but not identical in shape to the conventional ones and it has some custom hole locations. What I have not been given is what the optics decision is going to be, so I am proactively gathering up information on the existing optic / reflector options and will attempt to design around those. Hopefully, I will choose the right ones.

    Of course, the more reflectors and optics I can consider, the better the odds of being correct.

    Please don't ask me to find out more, it is just easier at this point to make sure it fits whatever is commonly used. BTW, if you have some favorite optics, please list them here. (this thread)

    If you need something special in a star, or have an interference problems, let me know in this thread

    http://www.candlepowerforums.com/vb/...mation-Thread&

    and I will try to accomodate in this design.
    Last edited by HarryN; 06-21-2011 at 12:42 AM.
    Homebuilts - "BREEZE" RCR2 sidexside, "Tornado" 4 x 18650 side x side, Streamlight SL20x LED module (Custom BST Feeler Thread)

  11. #11
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    Default Re: XM-L (cree) Optics and Reflectors Thread

    My favorite is Ledil LXP-RS. All you need to do is to enlarge the hole in the holder so the dome fits in.

    Also modified Regina is a good thrower but I don't have any beamshots available. Ledil Iris has some great throw too with decent flood, but it's rather large and heavy.

  12. #12
    Flashaholic*
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    Default Re: XM-L (cree) Optics and Reflectors Thread

    Thanks for that info and the pictures. I can see why you like those setups.

    Do you happen to have any pictures of how you did the board / lens interface ? The lens holders seem to assume that the top of the PCB is perfectly flat vs. the reality that there are wires, solder pads, and fasteners involved.

    Any suggestions are welcome.

    Thanks

    Harry
    Homebuilts - "BREEZE" RCR2 sidexside, "Tornado" 4 x 18650 side x side, Streamlight SL20x LED module (Custom BST Feeler Thread)

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