Branded ‘Extremely Flat Optic’ – or UFO – there are 45mm diameter uneven (wall washing, high photograph) or zoom variations, plus a 67mm zoom model.
To maintain top down, the rears have Fresnel-like buildings (left) to assemble mild.
Whole top from the led emissive level to optical output floor is
- 18mm for the 45mm uneven (UFO45A)
- ~14mm for the 45mm zoom (UFO45Z)
- ~22mm for the 67mm zoom (UFO67Z)
45mm uneven alignment
They’re designed to work with single chip, multi-chip and small CoB leds – the bigger zoom works with CoBs as much as 14mm – and are appropriate for tuneable white use, however not color mixing. Pages 3 and 4 of the information sheet are compatible guides.
For wall washing, the uneven model needs to be positioned away from the highest of the wall by a 3rd of the wall top (so 1m from a 3m wall), and be spaced aside the identical distance, or as much as 1.3x that distance (so 1 – 1.3m).
The illumination sample is a smooth rectangle. In an instance utilizing a Cree XHP35.2, peak depth in the direction of the wall is 0.94cd/lm whereas backwards peak depth is 0.15cd/lm.
Onto the zoom variations:
The zoom lenses are one-piece with the zoom coming from altering the gap to the led.
The 45mm sort produces beams between 13.9 and 35.2° FWHM with a XHP35.2 HI utilizing 6mm of motion (Bridgelux, Citizen and Lumileds examples are additionally present), whereas the UFO67Z’s achieves 12.2 to 35.6° with 9mm of motion.
Holders are offered, that are two-part for the fastened sort or three-part for the zooms.
In all circumstances there are numerous bases to suit numerous leds, then separate facet frames (in black or clear) join the optic to the bottom. Within the zoom case (proper), the facet frames have a spiral top adjustment.
The great Extremely Flat Optic knowledge sheet may be discovered right here
