A year ago, I was talking about a new generation of lighting LEDs, the spectrum of light which is close to the Sun, for which these LEDs are called SunLike (Ammo1.livejournal.com/926025.html). Then they were very expensive. Now the price has fallen and there were Chinese counterparts.
The fundamental difference from the usual SunLike LEDs - the principle of producing white light. In conventional LED lighting crystals are used, emitting blue light with a wavelength of 452-456 nm, coated with phosphor, blue light is partially converted to red and yellow. In Sunlike crystals are used, emitting violet light with a wavelength of 418-426 nm and the phosphor, which converts the violet light into red, green and blue. This allows you to get rid of "blue peak" of the danger which some scientists say.
Now the 6-watt LEDs Seoul Semiconductor Sunlike SAWS0661A much cheaper, but the lamp based on them still not cheap.
Company Smart Eco Lightning It released its LED solar spectrum, worth almost twice cheaper. 6-watt modules have SOL1306 CRI (Ra) 98-99 and give 648-713 lumens (replacing 70-watt incandescent lamp).
Unlike the Korean SunLike, in Chinese SmartEco used simultaneously violet (424-425 nm) and blue (456-459 nm) crystals.
Belarusian entrepreneur producing lamps under the brand GrowByLEDs, sent me to study the seven lamps, three LED Sunlike SAWS0661A (with a color temperature of 3000K, 4000K and 5000K) and four LED SmartEco SOL1306S (a color temperature of 3200K, 4000K, 5000K and 5600K).
We compare the spectra. Left - SunLike 3000K, right - SmartEco 3200K. The spectrum of LED lamps with Chinese even smoother and color rendering indices higher.
For comparison, the spectra of conventional lamps with CRI of 80 and 90: left OSRAM, IKEA right.
Left - SunLike 4000K, right - SmartEco 4000K.
For comparison, the spectra of conventional lamps with a color temperature of 4000K: Left OSRAM, IKEA right. Blue peak in all its glory.
Left - SunLike 5000K, right - SmartEco 5000K.
Left - LED strip with a color temperature of 5600K in conventional LEDs with a high CRI and SmartEco 5600K. Feel the difference. :)
SmartEco LEDs were not only cheaper Sunlike, but also a little better over the spectrum, however, and they both provide a very high-quality lighting, which is comparable to incandescent lamps.
6-watt lamp LED SmartEco GrowByLEDs It sells for $ 16. Of course, and it's not cheap, but I very much hope that in a few years a new generation of LEDs with a flat "solar" range to be used in even the most cheap lamps.
© 2019 Alex Nadozhin