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  • Focuses light into a narrow line

    posted by bigricesack on 01/08/2010
    0 0

    Involvement:Expert (understands the inner workings) - Ownership:less than 1 day

    Pros:

    This lens performs a function that is otherwise hard to find: it focuses light into a line or rectangular shape. This is good for a bike light, were you want to be visible from front left and right but do not care much about being visible from above or below.

    Cons:

    The lens needs some distance from the LED: approximately a centimeter between LED dome and the back of the holder. The problem is the holder then shields a lot of light. So it is better to use this lens without the holer.

    OtherThoughts:

    I will use theis lens (without holder) in front of the lens sku.1920. This gives a beam that is suitable for a bicycle. sku 1920 feeds nearly all light from the LED forward, and sku 1918 mages it into a rectangular beam.

    Bottomline:

    Use it to make a wide(r) beam.

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