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Thread: Oval / Oblong LED sub lenses and optics?

  1. #1

    Question Oval / Oblong LED sub lenses and optics?

    Do anyone use them on bike lights?
    Are sub lenses any god on 3 LED optics?
    Is there any shots on an oval beam on the web?

    /Gunnar

  2. #2
    Enlightened
    Join Date
    Sep 2007
    Location
    Weaver, AL
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    86

    Default Re: Oval / Oblong LED sub lenses and optics?

    Quote Originally Posted by Gunnar View Post
    Do anyone use them on bike lights?
    Are sub lenses any god on 3 LED optics?
    Is there any shots on an oval beam on the web?

    /Gunnar
    50 lumen 1-watt Luxeon star in matching Fraen elliptical optics screen shot.

    Off road screen shot.



    On road screen shot.

    Keep in mind I power it with a dynamo and need to recharge the batteries as I pedal along as well. An LED with a higher lumen rating will produce a lot more light. Here is a photo of my light.
    Last edited by n4zou; 10-28-2007 at 09:47 AM.

  3. #3

    Default Re: Oval / Oblong LED sub lenses and optics?

    I used elliptical lenses on my first attempt - aligned vertically. I was blinding cyclists coming the other way. Using it for wide instead, I wasn't pleased with the throw, it seemed too much light was going off to the side. Two spot lenses give me enough spill to the side for road riding.

  4. #4
    Flashaholic* Szemhazai's Avatar
    Join Date
    Jan 2006
    Location
    Wroclaw - Poland
    Posts
    749

    Default Re: Oval / Oblong LED sub lenses and optics?

    rideatnight what lens did you use ? The best for bike are elliptical 10*x20* (so called 15*).
    Enlightened member of pl.rec.rowery
    Light-Test - bike light’s & Headlamps comparison site. - In polish but picture says everything

  5. #5
    Enlightened
    Join Date
    Sep 2007
    Location
    Weaver, AL
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    86

    Default Re: Oval / Oblong LED sub lenses and optics?

    Quote Originally Posted by Szemhazai View Post
    rideatnight what lens did you use ? The best for bike are elliptical 10*x20* (so called 15*).
    That’s what I used; Luxeon Fraen 10 X 20 and I found it perfect for use on my bicycle.

    I found a stepper motor capable of providing 12-volts @ 1000mA with less drag than my cheap bottle dynamo. Now all I need to do is figure out how to mount and drive it from a wheel. More info here…
    http://www.c-realevents.demon.co.uk/.../stepmotor.htm

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