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Thread: Boro Glass Lenses

  1. #1

    Default Boro Glass Lenses

    Hi,

    Does anyone know a source of borosilicate lenses. I can design the head around the lens, but need a couple of sizes including approimately 60x10mm and 20-30mm in 6mm thickness.

    Alunatec sell thes 60mm, but don't sell the small ones I need.

    I've search the forum but only came up with a few dud links and lots of noise.

    thanks, damien
    Regards,
    Damien Siviero
    http://damiensiviero.com

  2. #2
    BVH's Avatar
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    Default Re: Boro Glass Lenses

    PM with info sent
    WWII 60" Anti Aircraft Carbon Arc (Sold), Short Arcs: 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600 Watt M-134 Gun Light, 500 Watt X-500-14s, 500 Watt Starburst, 300 Watt Locators, Megaray, 150 Watt Set Beam & Communicator, Maxabeam Gen3, LarryK14@52V

  3. #3
    Flashaholic* lucca brassi's Avatar
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    Default Re: Boro Glass Lenses

    6 mm is hard to find but other dimensions ... http://shop.dev-pein.de/Selbstbau/Glaeser/2/

    once I have made costum test tubes andIi have simply contact producer trough ebay producer store ; works fine

  4. #4

    Default Re: Boro Glass Lenses

    Quote Originally Posted by lucca brassi View Post
    6 mm is hard to find but other dimensions ... http://shop.dev-pein.de/Selbstbau/Glaeser/2/

    once I have made costum test tubes andIi have simply contact producer trough ebay producer store ; works fine
    awesome, tanks.

    ds
    Regards,
    Damien Siviero
    http://damiensiviero.com

  5. #5

    Default Re: Boro Glass Lenses

    I'm building a light that needs to go deep. Assuming a 60-63mm boro lens, does anyone know whether a 10mm thickness will handle 200m/21bar/300psi?

    I've looked at the calculator linked to in the library, but to honest can't make sense of the material types. http://www.ispoptics.com/designofpressurewindow.htm
    Last edited by betti154; 08-01-2012 at 01:40 AM.
    Regards,
    Damien Siviero
    http://damiensiviero.com

  6. #6
    Flashaholic* 350xfire's Avatar
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    Default Re: Boro Glass Lenses

    Damn, 300psi??? I had a 3mm crack around 80psi... If it is linear then 10mm should be right on the edge. Now, it also depends on how much support you have behind the lens. Is the lens only held by the circumference of the head, or will it have support behind it?
    Last edited by 350xfire; 08-01-2012 at 01:12 PM.
    http://tlslights.com/ your source for quality affordable dive lights, Mag-lite conversions and weapon lights. Now a Federal Firearms Dealer.

  7. #7
    Flashaholic* lucca brassi's Avatar
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    Default Re: Boro Glass Lenses

    Damien if you click on katalog icone an download it from dev-pein.de you have parameters and formula on page 97

    in your case you have with d=10mm ; @ 60mm glass/45mm diameter window and holds 16 bar ; @ 63mm glass/48mm diameter window also 16 bar

    but I think that in that formula is also included safety factor which gives you less MOD
    Last edited by lucca brassi; 08-01-2012 at 10:35 AM.

  8. #8
    Flashaholic* 350xfire's Avatar
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    Default Re: Boro Glass Lenses

    Again, those calcs depend on how you support the back of the lens.
    http://tlslights.com/ your source for quality affordable dive lights, Mag-lite conversions and weapon lights. Now a Federal Firearms Dealer.

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