DEU
Some "little things" you have to know before buying an LED lamp
1. LEDs heat up and the higher their temperature, the faster they degrade (their light output decreases, the color temperature changes) and fail.Using LEDs without heat dissipation is a crime!
Therefore, we attach great importance to heat dissipation. All our designs of lamps are equipped with heat sinks and heating at control points does not exceed 50-60C. If the hand does not tolerate the temperature when touching the LED lamp, then the temperature directly on the LEDs is at least 90C.
2. LED lamps (especially "noname" and at a suspiciously low price) have unacceptable ripples (usually at a frequency of 100 Hz), which affect your vision.
The camera of a smartphone in video mode and with the ripple reduction function turned off perfectly "sees" this.
All our products pass final quality control, including ripple measurement, and we guarantee the level of ripple at a frequency of 100 Hz no more than 2% (usually no more than 1%).
3. LED lamps have different color temperatures (from 2700K - warm light to 6000K and above - cold light). Unscrupulous manufacturers either do not indicate the color temperature at all, or the color temperature on the package does not correspond to reality. We have seen fixtures with a measured color temperature of 16000K, although the packaging indicated 6000K.
The color rendering index (denoted as CRI or Ra) is a parameter that characterizes the degree to which the natural color of an object matches the visible color of this object when illuminated by a light source.
CRI (Ra) in the reference light source is equal to 100 (natural display of all shades). The color rendering index of sunlight is also taken as 100. However, the luminaire does not have to have such an indicator. It is enough that Ra is at least 80. It is usually impossible to see a noticeable difference in color rendering when lighting with LED fixtures with CRI 82 and 90+, but in our experience and according to feedback from our customers, fixtures with CRI 90+ have a more "natural" light that is pleasing to the eye. This is especially true for items with a red tint.
We offer lamps of two types: with a CRI of at least 82 and at least 90. Which one to choose is up to you. Moreover, the difference in price is not significant.