Jetbeam        
Results 1 to 18 of 18

Thread: Best place to get an aspheric lense

  1. #1
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Best place to get an aspheric lense

    as the title says where is the best place to get an aspheric lense from?

    thanks jamie

    EDIT: i would also like an aspheric lense for a maglite either minimag AA or solatier AAA
    Last edited by jamie.91; 11-11-2008 at 01:05 PM.
    Four surefires and counting, this could be expensive

  2. #2
    Flashaholic* tx101's Avatar
    Join Date
    May 2008
    Location
    London UK
    Posts
    2,329

    Default Re: Where to get an aspheric lense

    What light is the lens for ???

  3. #3
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Re: Where to get an aspheric lense

    i cant realy say because my other thread got closed because i was supposidly advertising for another site (which i was not) so all i can say is that the lense in the light is about 18mm diameter

    thanks jamie
    Four surefires and counting, this could be expensive

  4. #4
    Flashaholic* tx101's Avatar
    Join Date
    May 2008
    Location
    London UK
    Posts
    2,329

    Default Re: Where to get an aspheric lense

    Hmmm .. so its around the same size as a Mini maglite
    Try the Shoppe, they have some acrylic balls that can be used
    with the same effect as a aspherical lens

  5. #5
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Re: Where to get an aspheric lense

    ??? how would a ball hold in place and would it fit into the reflector ???

    thanks jamie
    Last edited by jamie.91; 11-11-2008 at 08:47 AM.
    Four surefires and counting, this could be expensive

  6. #6
    Flashaholic* tx101's Avatar
    Join Date
    May 2008
    Location
    London UK
    Posts
    2,329

    Default Re: Where to get an aspheric lense

    I have an Aspherical lens on a Maglite and I get a better beam
    without the reflector.
    You need the right size ball to sit inside the bezel so that it can focus
    correctly this might mean that the ball is half sticking out of the bezel

    Measure the existing diameter of the stock lens .... say 18mm and buy the same size aspherical lens

  7. #7
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Re: Where to get an aspheric lense

    is there any really good places to buy aspherical lenses from ?

    thanks jamie
    Four surefires and counting, this could be expensive

  8. #8
    Flashaholic* tx101's Avatar
    Join Date
    May 2008
    Location
    London UK
    Posts
    2,329

    Default Re: Where to get an aspheric lense

    PM send

  9. #9

    Default Re: Best place to get an aspheric lense

    The shoppe sells aspheric lens for the minimag, you will need a lens holder for it which you can get at home depot fairly cheap

  10. #10
    Flashaholic BenjiBot's Avatar
    Join Date
    Apr 2007
    Location
    London, UK
    Posts
    248

    Default Re: Best place to get an aspheric lense

    I got the aspheric lens and the balls from the Shoppe for the MiniMag, can't really recommend either. The ball would have to be glued in place to make it stay there, and there are cracks and artifacts that show up when the light is on. Seeing as they are dirt cheap I can't complain. The lens is not aspheric in the same way as you get with a KD drop-in or Ledean or Mac built light - you don't get to project the LED die in the way that you might be looking for. Hope this helps

  11. #11
    Flashaholic* LukeA's Avatar
    Join Date
    Jun 2007
    Location
    near Pittsburgh
    Posts
    4,401

    Default Re: Best place to get an aspheric lense

    Quote Originally Posted by BenjiBot View Post
    The lens is not aspheric in the same way as you get with a KD drop-in or Ledean or Mac built light - you don't get to project the LED die in the way that you might be looking for. Hope this helps
    Well, it is, but it might not be ground precisely enough to sharply focus the die image like the larger lenses.

  12. #12
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Re: Best place to get an aspheric lense

    im not really having any luck at the shoppe so far is there any alternatives and im not to bothered about it being cheap as long as its not stupidly expensive lol

    jamie
    Four surefires and counting, this could be expensive

  13. #13
    Flashaholic BenjiBot's Avatar
    Join Date
    Apr 2007
    Location
    London, UK
    Posts
    248

    Default Re: Best place to get an aspheric lense

    Quote Originally Posted by LukeA View Post
    Well, it is, but it might not be ground precisely enough to sharply focus the die image like the larger lenses.
    Sorry to take this slightly off topic, but can you expand a bit on this? The KD aspheric lens (for my D cell Mag) that I mentioned is obviously aspherical - the aspheric I got from the shoppe (marked "mineral glass crystal MCT 227 1.0 mm"), for my MiniMag is only very slightly convex, maybe just, er, 1 mm compared to the massive dome of the KD/Ledean. Is your MM aspheric lens more obviously domed/bulbous? I'm thinking I ordered the wrong bit of kit

    EDIT: just tried my cut-down MiniMag LED running a 14500 with all four of my Shoppe aspherical balls - not the lens - and I can see fissures and artefacts in each of them. Obviously at the price they are not sold as high-end optics, but wanted to mention that they are not perfect for those looking for the dream beam. It is, however, still possible to project a nicely square die
    Last edited by BenjiBot; 11-12-2008 at 05:30 PM.

  14. #14

    Default Re: Best place to get an aspheric lense

    Quote Originally Posted by BenjiBot View Post
    I got the aspheric lens and the balls from the Shoppe for the MiniMag, can't really recommend either. The ball would have to be glued in place to make it stay there, and there are cracks and artifacts that show up when the light is on. Seeing as they are dirt cheap I can't complain. The lens is not aspheric in the same way as you get with a KD drop-in or Ledean or Mac built light - you don't get to project the LED die in the way that you might be looking for. Hope this helps
    It does not need to be glued into place if you have the lens holder

    It does show the die not as focused as an acrylic ball but it does show the die. In any case I thought this was to improve throw not having a die for a hotspot. Even though it does not have a clearly focus die it does out throw the acrylic ball. There are artifacts but if you are looking for a perfect light why tinker with the minimag at all.

  15. #15

    Default Re: Best place to get an aspheric lense

    Quote Originally Posted by BenjiBot View Post
    ....the aspheric I got from the shoppe (marked "mineral glass crystal MCT 227 1.0 mm"), for my MiniMag is only very slightly convex, maybe just, er, 1 mm compared to the massive dome of the KD/Ledean. Is your MM aspheric lens more obviously domed/bulbous?
    It sounds like you got the wrong one. The one I have is clearly shaped like an asperichal lens.

  16. #16
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Re: Best place to get an aspheric lense

    im new to aspheric lenses and was wondering it it the more curved the more focused in which case i would want one as focused as possibel and does thie affect throw ?

    thanks jamie
    Four surefires and counting, this could be expensive

  17. #17
    Flashaholic* tx101's Avatar
    Join Date
    May 2008
    Location
    London UK
    Posts
    2,329

    Default Re: Best place to get an aspheric lense

    Looking at your avatar .... a LED Mag .... is that a pic of your light ?
    If it is, why dont your get an aspherical lens for that and just mess around with that.
    If you search around the forum there is plenty of information on aspherical lens and Maglites.
    Thats how I "build" my Mag.

  18. #18
    Flashaholic* jamie.91's Avatar
    Join Date
    Aug 2008
    Location
    United Kingdom
    Posts
    668

    Default Re: Best place to get an aspheric lense

    Sadly thats not my mag but it is one off here, its my "dream" light lol i dont realy have the money right now to build on of those never mind the knowledge because i cant shorten one myself as i only have limited skills on a lathe lol

    jamie

    Although i would like to mod an AA or AAA maglite, that would be nice!
    Four surefires and counting, this could be expensive

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •