Violet based phosphor leds

Rocket Soul

Well-Known Member
From time to time ive seen people mention these violet based high cri phosphor leds. Theres Yuji leds, and i think Toshiba and Soraa also does them. Their spectrum starts around 400nm and the low K spectrums give off a lot of far red/ir, the bits that are usually lacking (and added as supplemental) in a normal cob/phosphor spectrum.The spectrums look really nice but they allways have very low lum/watt and and usually quite expensive.colormix.gif
Anyone has any experience growing with these?

Could they be reasonably electrically efficient? I know you need the LER to establish how efficient they are but i dont have computer nor programs to do so. But looking how going from Cri80 to 90 on 3000k bridgelux vero spectrum drops LER from 320ish to 260ish i dont think its far fetched that these could be relatively efficient seeing how the added spectrum, in comparison to vero 90 cri, is mostly at the 2 ends of the spectrum where light creates very little luminousity.

Would anyone with the means of calculating LER have a look at this?

Link for yuji violetbased leds
https://store.yujiintl.com/collections/vtc-series

I like the vtc hardstrips for supplemental side/intracanopy lighting.
 

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