DX » Community » Reviews » 21mm LED Acrylic Lens for Flashlight (5-Pack)
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  • posted byKorkonen on 04/04/2013

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 monthPros:Plastic optics based on total internal reflection (TIR). The overall quality is ok, fairly efficient collimation of light from a power LED to a narrow beam. As a plastic optic the LED connections can not be accidentally short circuited as is possible with some... Read more

    0 0
  • ok
    posted byJosh101 on 03/12/2013

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 monthPros:Good solid acrylic (plastic) lens, were delivered with no damage and were all there. Ok beam for the LED's i usedCons:The slot for the LED is too deep for any of the LED's i used. only have the cavity was filled by the led. so i am not sure the focus was what i... Read more

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  • posted bylasermanathome on 12/24/2012

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 monthPros:The nice thing of these kind of optics is the high percentage of transducing light into a beam wich has a divergence comparable of a wideangle laser. Expecially with R2 leds, it is difficult to beat the divergence, even recoil led flashlight included. Can easil... Read more

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  • posted byollyk22 on 06/16/2011

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 monthPros:Use with Cree emitter is easy Nice clean optics Clean narrow beam Cons:Might need hot glue to stick to emitter Handle with care - can mark & scratch easily a bit lossy but sat in a standard reflector helps to reduce this. I personally would be sceptical abo... Read more

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  • posted bysteve000 on 05/20/2011

    Involvement:Expert (understands the inner workings) - Ownership:less than 1 dayPros:These are great they really focus the LED and take away the flood. Id say the beam is around 5 degrees maybe 10degs. less than a normal LED at same distance. Cons:There is a lot of light being lost around the sides, id recommend coating the sides in reflective pa... Read more

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  • posted byseckinb on 01/05/2011

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 weekPros:+ TIR optics + A clean throwy beam + Works well with an XR-E emitter + Can take the place of a reflector easily Cons:- One in the batch was scratched and a piece chipped in the delivery. - May need to adjust the emitter distance to perfectly fit into the optics,... Read more

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