DX » Community » Reviews » 21mm LED Acrylic Lens for Flashlight (5-Pack)
Customer’s impression:
Хорошая линза
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  • posted byD3shnik on 07/20/2015

    Линза очень своеобразно собирает свет. По моим ощущениям 30% света расходится под углом 35 градусов, 60% света фокусируются в пучек 6 градусов и остальные 5% света расходятся под углом 120 градусов. Более подробно можно посмотреть на фото. Все опыты проводил со светодиодами XM-L.

    Линза 6 градусов Линза 6 градусов Линза 6 градусов

    Impression:Хорошая линза;

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  • posted byKorkonen on 04/04/2013

    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 metal reflectors. Max outer diameter... Read more

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  • ok
    posted byJosh101 on 03/12/2013

    Good solid acrylic (plastic) lens, were delivered with no damage and were all there. Ok beam for the LED's i used 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 it was supposed to be. I am going to try... Read more

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  • posted bylasermanathome on 12/24/2012

    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 easily made fit in W501 as an alternative... Read more

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  • posted byollyk22 on 06/16/2011

    Use with Cree emitter is easy Nice clean optics Clean narrow beam 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 about painting the sides as this will only a... Read more

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  • posted bysteve000 on 05/20/2011

    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. There is a lot of light being lost around the sides, id recommend coating the sides in reflective paint of possible, such as chrome paint a... Read more

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  • posted byseckinb on 01/05/2011

    + TIR optics + A clean throwy beam + Works well with an XR-E emitter + Can take the place of a reflector easily - 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, in modding a current light. I also have... Read more

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