The color rendering index of light influences the way we see things. The higher the index, the more natural colors and more distinguishable shades. The sun and incandescent color rendering index is 100, from cheap LED bulbs - 70, in standard - 80. Until today, LED lamp with a color rendering index greater than 90, you could buy only at IKEA (series Ledare) stores.
Finally, the first Russian manufacturers produced a series of lamps with high color rendering. He became a pioneer Nanosvet.
I received from the manufacturer 26 models of new lamps, making Russia a week ago, and tested them.
The new series has a "pear", "the G45 balls", "candle", spots GU10, GU5.3 and GX53. All lamps are released in two color temperatures: warm white light of 2700K and 4000K neutral white.
The results of my tests:
Color rendering index CRI (Ra) of all lamps are indeed higher 90. In lamps with warm light color rendering index was measured 90-92 have lamps with a neutral light - 92-94.
The measured light output for all lamps up 94-113% of the declared (average 105%).
The measured power for all lamps is different from the declared more than 1 watt.
Coefficient light pulsations at all lamps is less than 1%.
All lamps are built in the IC-drivers, so their brightness does not change as the supply voltage over a wide range. All lamps are working and do not change the brightness in the range of supply voltages, declared on the packaging: 170-250 V, with many lamps can work and does not reduce the brightness even at lower voltages (in the "min.napr" table specified voltage at which the lamp brightness is reduced by 5%).
All lights work correctly with the switch having an indicator (not flash or glow weakly when the switch is turned off).
Compared with the results of test tubes majority of Russian brands, these results seem surprising: it seems Nanosvet remained almost the only Russian brand, not to overstate the parameters on the package and do not be fooled consumers.
These lamps are the first Russian brand lamps that have received the maximum score - 5 points of the automatic system of calculating the final grade Lamptest.ru site.
Luminous flux, color temperature and color rendering index are measured using and a two-meter integrating sphere spectrometer Instrument Systems CAS 140 CT, Power consumption and power factor of the device Robiton PM-2Pulsation device Uprtek MK350D. The minimum operating voltage at which the luminous flux is not reduced by more than 5% from the nominal, measured with the device Lamptest-1, stabilizer Calm Instab 500 and Latro Suntek TDGC2-0.5. Before the measurements to stabilize the lamp parameters were heated for half an hour.
Shows the spectrum of lamps with warm and neutral light.
The first example, a "pear" 600 lm 2700K L160 LE-GLS-8 / E27 / 927, the second example - "ball" G45 E14 680 lm 4000K L205 LE-P45-8 / E14 / 940.
Incidentally, this pear, replacing 60-watt incandescent bulb costs only 149 rubles. For lamps with a CRI of 90 is very good. The ball is worth 219 rubles, which is too bad, considering that it shines as a 75-watt incandescent bulb.
Spots in which in the "type" of the table indicated 60 °, provided with a lens allowing the light to focus at the center and lower blinding (ammo1.livejournal.com/703638.html) effect.
GU10 powerful spots are elongated body.
The manufacturer offers a whole bulb two years warranty.
A small fly in the ointment. Nanosvet plans to convert all its lights on CRI 90+, so the barcodes of new lamps are the same barcode lamps with CRI of 80, and their names are very similar. For example, a "pear" 600 lm in a new series called L160 LE-GLS-8 / E27 / 927, and in the old L160 LE-GLS-8 / E27 / 827. Unlike in the single digits. Because of this lamp stores can confuse the old and new series and not be aware of the difference between them.
Now Nanosvet lamps with CRI 90+ only beginning to appear on the market. They can be purchased at the online store NanoLight.
I am glad that finally appeared cheap LED lamps with high color rendering. As far as I know, the factory price of the same identical power lamps with CRI of 80 and 90 is now only differ by 5%, but one of the major Russian brands does not order a lamp with high CRI, believing that "people do not need it, the main thing that was cheaper. " Well, that at least a small Nanosvet ordered such lamps, and took them to Russia. The main thing now, and that the reliability of these lamps it would have been as good as with the other parameters.
P.S. Test results Nanosvet lamps with CRI 90+ on Lamptest.ru.
P.P.S. This post is not advertising. I did not get a penny for it and free is always ready to talk about the really good things.
© 2019 Alex Nadozhin
The main theme of my blog - Equipment for human life. I write reviews, share experiences, talk about all sorts of interesting things. My second project - lamptest.ru. I test LED lamps and help figure out which ones are good and which are not.