Review of Remez E27 and E14 LED bulbs on new generation Korean LEDs
The quality of modern light sources is gradually improving and has already become comparable to ordinary sunlight. Such a source appeared thanks to Korean Sunlike LEDs, which have a spectrum like in daylight. The disadvantage of conventional LEDs is the excess of blue light in the emitted spectrum.The width of the photographs used in the review is 1500px. Photos can be opened in a new tab to view in more detail. In addition, there is no function to open an image in a lightbox, which is convenient for a large number of photos.Declared Parameters
The review involved Remez LED lamps with the popular E27 and E14 socket. The main difference from ordinary LED bulbs is the use of Korean Sunlike LEDs with an even spectrum made using new technology. The basis of such LEDs is a purple crystal, coated on top with a yellow phosphor. Thanks to this, the spectrum of light becomes smooth, like in daylight. The production of such LEDs turns out to be expensive, which affects the cost of LED lamps and lamps.
Base E14 7W 5700K
With base E27 9W 5700KThe lineup
The color temperature of the produced lamps is 3000K and 5700K, which corresponds to the warm light from ordinary incandescent lamps and cold white light. Power for the E27 base is 7W and 9W. For the E14 base, the power is 5W and 7W. The shape of the flask is classic and in the form of a candle.Color rendering and spectrum
The tested samples of LED lamps E14 and E27 from Remez provide maximum color reproduction, at the level of 97-98 CRI. In conventional light sources, it is 70-80 CRI. This parameter determines how natural you will see colors. With a low CRI value, the colors of the objects will be faded, that is, they will differ from the real ones for the worse.
For example, this is especially important for artists, photographers, for those who need to see the real color. The colors will differ depending on the type of lighting, in the sunlight they will be natural, when using ordinary LED bulbs they will be dimmer.
The main feature of the spectrum of conventional LEDs is a large amount of blue light, which is not in incandescent and sunlight.
Unlike conventional LEDs
Power
The power of the samples is measured after heating for 60 minutes. Energy consumption was measured on Remez LED lamps with a color temperature of 5700K.Energy consumption corresponds to the promised indicators, within the error of measuring instruments.Light flow
Measurements were taken after warming up for 1 hour. During this period, the luminous flux decreases slightly due to the peculiarities of the LEDs. 90% now use diode bulbs with neutral daylight, which does not have a yellow tint.The effectiveness of the LEDs depends on the color temperature, therefore, tests of samples at 3000K and 5700K will be carried out separately.The results for 5700K show that the real light flux is higher than the declared one by 35-50%.The light flux measurement results for 3000K correspond to those declared by the manufacturer. Acceptable measurement error of 5-10%.Ripples are completely absent due to a high-quality and stable LED power supply. Cheap bulbs have ripples at a frequency of 100 Hertz, that is, the lamp reduces and increases the brightness 100 times per second.Heat
Pre-LED lamps E27 9W 5700K and E14 7W 5700K operate for 1 hour in the bulb position down, the heat rises and heats up the lamp more strongly. In this mode, most of the lamps in domestic premises are operated. Then the bulb is removed and the heating of the LEDs is immediately measured.The heating of LED diodes is very low, only 87 ° and 89 °, respectively. In ordinary bulbs, they warm up 110-130 degrees, which leads to active degradation and a decrease in brightness.
Life time
Over the past 2 years, I dismantled more than 100 lamps that failed immediately or after six months of operation. Unlike most laboratories, I carry out testing for a long service life, constantly using samples for lighting. Many modern lamps have a short service life due to poor assembly and lack of thermal paste.
These Remez LED bulbs have low LED heat, which indicates an efficient cooling system. When parsing, I could not find any flaws in the design, the heat is removed very well. The heating temperature of the LEDs determines the life of the bulbs and fixtures. Remez will have a long life and high quality LEDs.Colour temperature
Most buyers switch to LED lamps with a color temperature of 4500K-6000K, which corresponds to the neutral and cold daylight, to which our eyes are accustomed. For incandescent bulbs, the color temperature is 2800K.
The photos below at 3000K and 5700K were taken by the camera with the setting “white balance” “daylight”.
Where can I buy?
You can get additional advice and purchase in the online store of the official distributorhttps://remezlight.com/home/led-bulbs/Also sold in Wildberries, OZON and the retail chain of Metro Cash & Carry stores.Summary
The test results confirm the declared parameters of the Remez E14 and E27 LED lamps. Samples with a temperature of 5700K provide a luminous flux above the promised by 30-50%. High-quality assembly and low heating will maximize the service life, the manufacturer gives a guarantee for 5 years. The power source (driver) of high quality guarantees stable operation even at a voltage of 90 volts without reducing the brightness. The cost depends on the expensive Korean Sunlike LEDs, due to which the light is safe and unique.
Author: Sergey Kazantsev
Samples tested in the lighting laboratory, official site led-obzor.ruTesting LED lamps for the home, LED strips, lamps, spotlights. I am testing GOST automotive LED lamps, halogen and xenon, fog lights, daytime running lights, LED lenses. I use low-beam headlights, xenon and halogen lenses, fog lights.Source: https://habr.com/ru/post/undefined/
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