Rated power
The power normally consumed by the lamp during operation. This parameter is often used to evaluate the overall brightness of the glow, especially in the case of lamps for headlights (see "Purpose"): such a specific parameter as the luminous flux, firstly, is less familiar to ordinary car owners, and secondly, in its characteristics are not always indicated. However, it must be remembered that only lamps of the same type (see above) can be compared with each other in terms of power consumption. different types can differ markedly in efficiency and luminosity. But what this indicator directly affects is the power consumption of the lamp and, accordingly, the load experienced by the generator or battery. Modern car lamps have a power of up to 100 W, such power consumption is normally tolerated by the on-board network in normal operation. However, the lower horsepower provides some fuel savings.
Colour temperature
The colour temperature of the light emitted by the lamp. The overall colour of the glow depends on this indicator; and note that the higher the colour temperature, the more “cold” the light looks, the closer it is to blue and blue. Traditional incandescent bulbs produce warm light at 2500-3000K, 3000-3500K can be described as "slightly warmer than neutral", neutral white corresponds to temperatures of
3700-4500K, higher values correspond to cooler shades, and temperatures
over 5000K characteristic of lamps with a blue (blue) colour of the glow.
Note that in this case the colour temperature of the lamp itself (more precisely, its filament or LED element) is indicated, and not the actual shade of the glow that it will give out; for the difference between these indicators, see "Glow colour". Also note here that it is possible to evaluate the shade of light by colour temperature in headlight lamps (see "Intended use"), for which the white colour of the glow is claimed. At the same time, this indicator has a very practical meaning: the warm colour of the light is considered optimal in wet weather, the neutral one gives the highest visible brightness, all other things being equal, and the cold “long-range” one can be subjectively pleasant for some drivers, and can also be used as an element of external tuning.
Increased brightness
The level of increased brightness provided by the lamp. This indicator is used by some manufacturers for marketing purposes: it describes how brighter a given model is than some "standard lamps". At the same time, the standards for comparison may be different, and impressive figures (in some models reaching 140%, that is, almost 2.5 times) are not always reliable — that is, a high-brightness lamp will not necessarily be just that much brighter than the “normal” model of the same type and power.
Light colour
Standard lamp glow color.
It is worth considering that in this case we do not mean the own shade produced by the lamp (see “Color temperature”), but the light that will be produced “ultimately” during normal use of the lamp. For example, in auxiliary models (see “Purpose”) intended for brake lights, the glow color is usually indicated as
red - this is the standard color for “stops”. In this case, the lamp itself can have a color temperature of about 4000 K (neutral white). Similarly, models used in fog lights can be yellow, in turn signals - also
orange, etc.
If we talk about the head light, then it is most often made white, and in such models the shade can be determined by the color temperature (see above). If the characteristics of the “head” lamp indicate a different color, this most likely means that it has a painted bulb, and the light produced by the headlights will have the same shade. Note that we are talking specifically about shade, and not about full-fledged light: for example, purple lamps will illuminate the environment with white light with a slight bias towards cool colors. At the same time, such lamps themselves will look purple. Such features are useful primarily for external car tuning.
