The problem with boosting the red with phosphors is the conversion from blue to red light tends to not be very efficient and the phosphors are expensive and hard to work with consistently. It is cheaper and more efficient to do the conversion with filtering agents. Or at least that’s how it was explained to me by an LED research guru.
I understand that manufacturers need to drive down fabrication costs to facilitate adoption…but in my admittedly uninformed opinion, that sounds like laziness in the R&D dept. Interesting point though.
It’s not to say that there is no magic phosphor phoo involved with all high-CRI leds. I think that the filtering technique is used mainly in high CRI LEDS with high color temperature and ultra-high CRI values (95-99 CRI).
Wow, thanks, for all the info. I do think it was quite a large pill to swallow, but we are all on a geek diet. I will definitely refer to this post many times forward…
Wow, very useful information. Being somewhat new to this field it will come in quite handy. Definitely going to save this info to pc for future referencing as well . Thx
I re-read all twice, and found small missings or mistakes that made through the correction 'till now, so I'm listing them here to let you correct them (sorry to make you work more! ):
SST50 and SST90 as you know are from Luminous, it would be nice to mention this, as on all other emitters it was written they were from Cree.
The SST50 picture is derailing, because it's reflowed on a Cree star... can make some confusion to the casual reader..
SSC P7, same as above, would be nice to mention it was made from SeoulSemiConductors
Last, the ending source/list has CREE as provider of infos and datasheets for ALL the emitters, which is clearly not.
Thanks to you Scaru for the time you spent on this, and to everyone else who contributed. For me being a newbie this is a great reference for learning and purchase decisions.