Luminus SFT 70

[wicky998]

Why does the SFT-70 have a black spot in the center of the hot spot on a close up? If I put light within 6 inches of something, the center is hollowed out and has a dark spot? is this normal for this emitter?

 

[PaladinNO]

Which light is this? I am considering the SFT-70 myself, in both an Emisar (DA1K) and / or Convoy (M21A) light.

 

[LEDphile]

The SFT-70 is a quad-die package, and so may have a distinct 4-lobed beam (with a dark cross or hole in the middle), depending on the optic used

 

[wicky998]

Which light is this? I am considering the SFT-70 myself, in both an Emisar (DA1K) and / or Convoy (M21A) light.

fenix pd36r pro

 

[wicky998]

The SFT-70 is a quad-die package, and so may have a distinct 4-lobed beam (with a dark cross or hole in the middle), depending on the optic used

that’s why i’m asking, if it’s the emitter or possibly just the optic/reflector of this particular light.

 

[LEDphile]

that's why i'm asking, if it's the emitter or possibly just the optic/reflector of this particular light.

Beam shape is a function of both the source and the optical system. The same source under different optics will give different beams, and the same optic with different sources will give different beams. As an example, here's a narrow beam optic on a variety of LEDs: https://www.ledil.com/product-card/?product=FCN13552_CRYSTAL-RS Note the beam shape of the XHP50 (another quad-die package) compared to the single die packages.