October 19, 2015 at 16:00Russian LED lamps
The vast majority of LED bulbs are made in China, but in Russia there are several manufacturers that collect bulbs in our country, and one of them also produces LEDs.
One of my readers brought me five lamps of three Russian manufacturers.
Three lamps "Optolux" produced by the St. Petersburg company Optogan. The
COB (Chip-on-board) module of their own production is used as a light source in these lamps: e27.optogan.ru/technical_param.html .
The manufacturer guarantees a very long life of 50,000 hours, a high CRI (color rendering index)> 80 and an extremely low light ripple of less than 1%. The lamp in the green box has a declared color temperature of 3000K, the lamps in the yellow boxes have 2700K.
For 6-watt lamps, a luminous flux of 400 Lm (equivalent to a 40 W incandescent lamp) is declared, for 8-watt lamps - 600 Lm (equivalent to a 60 W incandescent lamp). Optogan also produces lamps with a power of 5, 9, 11, 12 watts.
I tested the lamps with Viso LightSpion and Lupine .
The luminous flux of 6-watt lamps corresponds to the declared one (though a lamp with a color temperature of 2700K actually consumes 7.2 W, not 6 W). An 8-watt lamp has a luminous flux of 12% less than declared, but the lamp still meets the declared equivalent of a 60 W incandescent lamp. The CRI of all three lamps is quite high, the ripple of the light is low. The color temperature of all lamps is slightly higher than stated. With switches that have an indicator, the lamps do not work correctly - they glow slightly when the switch is turned off.
Because of the shape of the lamp housing, they shine only forward (effective angle of illumination is about 120 degrees). Because of this, there may be too dark areas behind the lamp (for example, on the ceiling).
Viso reports and a visual comparison of light with incandescent light.
All photographs were taken in manual exposure mode (3500K, ISO125, F1.8, 1/30).
Optolux E27-3006 220323006 (6 W 3000K).
Optolux E27-3007 220323007 (6 W 2700K).
Optolux E27-3005 220323005 (8 W 2700K).
Lamps "Optolux" give a pleasant comfortable light, very similar to the light of incandescent lamps. I can safely recommend these lamps for use in premises.
6 W lamps now cost 330 rubles, 8 W - 420 rubles: www.ledformula.ru/optogan .
The Plant lamp 28 WW-220 / DIM is perhaps the first high-quality corn lamp I have met (and I have already met more than ten of them).
Measurement results.
The luminous flux of the lamp is slightly less than declared, but by the equivalent of a 60 W incandescent lamp, the lamp is quite consistent. The lamp has a fairly high efficiency - 87.2 Lm / W, high CRI 85.9 and low ripple 15%. Color temperature is significantly higher than stated. The lamp supports dimming (brightness adjustment), however, with switches with an indicator, the lamp does not work correctly - it glows slightly when the switch is turned off.
The lamp has one unusual feature - after turning off, it continues to glow weakly for almost a minute due to the smooth discharge of large capacitors.
Viso reports and a visual comparison of light with incandescent light.
Photos were taken in manual exposure mode (3500K, ISO125, F1.8, 1/30).
A Plant lamp 28 WW-220 / DIM costs 650 rubles, which of course is very expensive. There are many cheaper lamps on the market that are in no way inferior to this lamp in terms of performance.
The last lamp in today's test is the Ecoton LSC 220 AC .
Despite the fact that the manufacturer writes in the instructions about a low level of light ripple, it turned out to be monstrously high - 122% (about why the ripple coefficient can be more than 100%, read here ).
A lamp with such a pulsation level should not be used not only in residential, but also in utility rooms, so I won’t even write anything about the other parameters. I will give only Viso reports and a visual comparison of light with incandescent light.
As you can see, not all LED lamps are made in China, and Russian Optolux lamps with Russian LEDs can compete with Chinese lamps not only in terms of parameters, but also in price.
ps All the results of my testing of LED lamps, see lamptest.ru .
© 2015, Alexey Nadezhin
One of my readers brought me five lamps of three Russian manufacturers.
Three lamps "Optolux" produced by the St. Petersburg company Optogan. The
COB (Chip-on-board) module of their own production is used as a light source in these lamps: e27.optogan.ru/technical_param.html .
The manufacturer guarantees a very long life of 50,000 hours, a high CRI (color rendering index)> 80 and an extremely low light ripple of less than 1%. The lamp in the green box has a declared color temperature of 3000K, the lamps in the yellow boxes have 2700K.
For 6-watt lamps, a luminous flux of 400 Lm (equivalent to a 40 W incandescent lamp) is declared, for 8-watt lamps - 600 Lm (equivalent to a 60 W incandescent lamp). Optogan also produces lamps with a power of 5, 9, 11, 12 watts.
I tested the lamps with Viso LightSpion and Lupine .
The luminous flux of 6-watt lamps corresponds to the declared one (though a lamp with a color temperature of 2700K actually consumes 7.2 W, not 6 W). An 8-watt lamp has a luminous flux of 12% less than declared, but the lamp still meets the declared equivalent of a 60 W incandescent lamp. The CRI of all three lamps is quite high, the ripple of the light is low. The color temperature of all lamps is slightly higher than stated. With switches that have an indicator, the lamps do not work correctly - they glow slightly when the switch is turned off.
Because of the shape of the lamp housing, they shine only forward (effective angle of illumination is about 120 degrees). Because of this, there may be too dark areas behind the lamp (for example, on the ceiling).
Viso reports and a visual comparison of light with incandescent light.
All photographs were taken in manual exposure mode (3500K, ISO125, F1.8, 1/30).
Optolux E27-3006 220323006 (6 W 3000K).
Optolux E27-3007 220323007 (6 W 2700K).
Optolux E27-3005 220323005 (8 W 2700K).
Lamps "Optolux" give a pleasant comfortable light, very similar to the light of incandescent lamps. I can safely recommend these lamps for use in premises.
6 W lamps now cost 330 rubles, 8 W - 420 rubles: www.ledformula.ru/optogan .
The Plant lamp 28 WW-220 / DIM is perhaps the first high-quality corn lamp I have met (and I have already met more than ten of them).
Measurement results.
The luminous flux of the lamp is slightly less than declared, but by the equivalent of a 60 W incandescent lamp, the lamp is quite consistent. The lamp has a fairly high efficiency - 87.2 Lm / W, high CRI 85.9 and low ripple 15%. Color temperature is significantly higher than stated. The lamp supports dimming (brightness adjustment), however, with switches with an indicator, the lamp does not work correctly - it glows slightly when the switch is turned off.
The lamp has one unusual feature - after turning off, it continues to glow weakly for almost a minute due to the smooth discharge of large capacitors.
Viso reports and a visual comparison of light with incandescent light.
Photos were taken in manual exposure mode (3500K, ISO125, F1.8, 1/30).
A Plant lamp 28 WW-220 / DIM costs 650 rubles, which of course is very expensive. There are many cheaper lamps on the market that are in no way inferior to this lamp in terms of performance.
The last lamp in today's test is the Ecoton LSC 220 AC .
Despite the fact that the manufacturer writes in the instructions about a low level of light ripple, it turned out to be monstrously high - 122% (about why the ripple coefficient can be more than 100%, read here ).
A lamp with such a pulsation level should not be used not only in residential, but also in utility rooms, so I won’t even write anything about the other parameters. I will give only Viso reports and a visual comparison of light with incandescent light.
As you can see, not all LED lamps are made in China, and Russian Optolux lamps with Russian LEDs can compete with Chinese lamps not only in terms of parameters, but also in price.
ps All the results of my testing of LED lamps, see lamptest.ru .
© 2015, Alexey Nadezhin