Chinese solar spectrum
A year ago, I talked about the emergence of a new generation of LEDs whose light spectrum is close to the sun, for which these LEDs are called SunLike . Then they were very expensive. Now the price has fallen and Chinese counterparts have appeared.
The fundamental difference between SunLike LEDs and conventional LEDs is the principle of obtaining white light. Conventional lighting LEDs use crystals that emit blue light with a wavelength of 452-456 nm, coated with a phosphor that partially converts blue light into red and yellow. Sunlike uses crystals emitting violet light with a wavelength of 418-426 nm and a phosphor that converts violet light into red, green, and blue. This allows you to get rid of the “blue peak”, about the danger of which some scientists write.
Now the 6-watt LEDs of Seoul Semiconductor Sunlike SAWS0661A are significantly cheaper, but lamps based on them are still not cheap.
Company Smart Eco Lightning released its LED solar spectrum, worth almost twice cheaper. 6-watt SOL1306 modules have a CRI (Ra) of 98-99 and give 648-713 lm (replacing a 70-watt incandescent lamp).
Unlike Korean SunLike, Chinese SmartEco simultaneously uses violet (424-425 nm) and blue (456-459 nm) crystals.
A Belarusian entrepreneur producing lamps under the GrowByLEDs brand sent me seven lamps for study: three on Sunlike SAWS0661A LEDs (with color temperature 3000K, 4000K and 5000K) and four on SmartEco SOL1306S LEDs (with color temperature 3200K, 4000K, 5000K and 5600K).
Compare the spectra. On the left is the SunLike 3000K, on the right is the SmartEco 3200K. The range of the lamp with Chinese LEDs is even smoother and the color rendering indices are higher.
For comparison, the spectra of conventional lamps with CRI 80 and 90: OSRAM on the left, IKEA on the right.
On the left is the SunLike 4000K, on the right is the SmartEco 4000K.
For comparison, the spectra of conventional lamps with a color temperature of 4000K: OSRAM on the left, IKEA on the right. Blue peak in all its glory.
On the left is the SunLike 5000K, on the right is the SmartEco 5000K.
On the left is an LED strip with a color temperature of 5600K on conventional high CRI and SmartEco 5600K LEDs. Feel the difference. :)
SmartEco LEDs were not only cheaper than SunLike, but also slightly better in spectrum, however, both of them give very high-quality lighting, not inferior to incandescent lamps.
6W LED SmartEco GrowByLEDs sells for $ 16 . Of course, this is not cheap, but I really hope that in a couple of years a new generation of LEDs with an even “solar” spectrum will be used even in the cheapest lamps.
© 2019, Alexey Nadezhin
The fundamental difference between SunLike LEDs and conventional LEDs is the principle of obtaining white light. Conventional lighting LEDs use crystals that emit blue light with a wavelength of 452-456 nm, coated with a phosphor that partially converts blue light into red and yellow. Sunlike uses crystals emitting violet light with a wavelength of 418-426 nm and a phosphor that converts violet light into red, green, and blue. This allows you to get rid of the “blue peak”, about the danger of which some scientists write.
Now the 6-watt LEDs of Seoul Semiconductor Sunlike SAWS0661A are significantly cheaper, but lamps based on them are still not cheap.
Company Smart Eco Lightning released its LED solar spectrum, worth almost twice cheaper. 6-watt SOL1306 modules have a CRI (Ra) of 98-99 and give 648-713 lm (replacing a 70-watt incandescent lamp).
Unlike Korean SunLike, Chinese SmartEco simultaneously uses violet (424-425 nm) and blue (456-459 nm) crystals.
A Belarusian entrepreneur producing lamps under the GrowByLEDs brand sent me seven lamps for study: three on Sunlike SAWS0661A LEDs (with color temperature 3000K, 4000K and 5000K) and four on SmartEco SOL1306S LEDs (with color temperature 3200K, 4000K, 5000K and 5600K).
Compare the spectra. On the left is the SunLike 3000K, on the right is the SmartEco 3200K. The range of the lamp with Chinese LEDs is even smoother and the color rendering indices are higher.
For comparison, the spectra of conventional lamps with CRI 80 and 90: OSRAM on the left, IKEA on the right.
On the left is the SunLike 4000K, on the right is the SmartEco 4000K.
For comparison, the spectra of conventional lamps with a color temperature of 4000K: OSRAM on the left, IKEA on the right. Blue peak in all its glory.
On the left is the SunLike 5000K, on the right is the SmartEco 5000K.
On the left is an LED strip with a color temperature of 5600K on conventional high CRI and SmartEco 5600K LEDs. Feel the difference. :)
SmartEco LEDs were not only cheaper than SunLike, but also slightly better in spectrum, however, both of them give very high-quality lighting, not inferior to incandescent lamps.
6W LED SmartEco GrowByLEDs sells for $ 16 . Of course, this is not cheap, but I really hope that in a couple of years a new generation of LEDs with an even “solar” spectrum will be used even in the cheapest lamps.
© 2019, Alexey Nadezhin