NEW Fenix FD20 - AA Battery Focus Lens Flashlight

[fenix store]

Sorry we missed this question. Let us get the answer from the Fenix engineers. We will post their answer here. Thanks!

Very interesting design!
What are the advantages of the dual reflector vs a zooming aspheric lens to accomplish the focusing?

 

[fenix store]

Here is the response from a Fenix engineer:

The common focusing flashlights on the market feature a push-pull design of the optical lens, which changes the distance between the reflector and the lighting source. The spot- and floodlight focus can be achieved by adjusting the focal length in this kind of design, but optimal facula effect cannot be achieved by use of a single reflector, so the lighting effect is relatively severely impaired.
In other focusing designs the position of the luminous point and the reflector cup are relatively fixed, and the light panel can be moved, thus the focal length of the luminous point cannot be adjusted in accordance with required demands, which causes poor heat dissipation of the LED. The higher the lumens, the shorter the lifespan.
Because the FD20 and FD30 are fitted with a Fenix independently designed innovative dual reflector optical system, heat dissipation is easier and faster, and the lighting effect will not be impaired. What's more, the 360° stepless regulation focusing technology dramatically improves the convenience of focus adjustment in user's favor. It is a bold and creative change, compared with the traditional focusing technology. This bold and creative focusing design make the FD20 and FD 30 very versatile focusing flashlights with better heat dissipation, extended LED lives and minimum loss of lighting effect.

Very interesting design!
What are the advantages of the dual reflector vs a zooming aspheric lens to accomplish the focusing?

 

[proceed5]

I have all the Fenix Focusing Flashlights, and from a layman end-user's experience, the Dual Reflector system of the FD30 and FD20 produces cleaner better beam than the FD41 or FD40, more evenly spread beam.

For example, the FD30 (my favourite of the FD series at the moment), the Wide-end is superb, the Zoom-end is just like using a PD32-2016, it has beam pattern with a center hotspot with clean big spill.

All good said, the 360 degree rotating feature makes adjustments for the "most intense" zoom-end position a bit harder as there is no zoom stopper.

Well done to Fenix for pioneering the Dual Reflector system :thumbsup: .

Will definitely add more FD series lights when Fenix launches them.