Offer H3 12V 55W Car Fog Light Bulb With Competitive Price
What Is the Kelvin Scale and Which Should I Choose for My Car?
Kelvin is a unit of measurement to describe the hue of a specific light source. This is not necessarily related to the heat output of the light source but rather the color of the light output. The higher the Kelvin value of the light source, the closer the light's color output will be close to actual sunlight. Bulbs with an output of 3500K or lower on the scale will have an amber hue. Bulbs in the mid-range of 3500K to 4100K will have a white hue. Bulbs in the higher 4200K+ range will tend to have more of a blue hue closer to, or exceeding, that of sunlight. Most modern HID lamp systems have a bluish hue because they operate within that higher end of the scale.
Different Hues/Kelvin Values Work Better Under Different Conditions
The higher the Kelvin value is, the more visible light will reflect back to the driver, increasing visibility at night. The light output from these higher Kelvin value bulbs is made up of a wide range of the visible light spectrum. White light contains all colors of the spectrum and the whiter the light produced, the more it will reflect off a wider range of objects independent of their color.
Bulbs with an output in the lower, amber Kelvin range work best in fog, snow or rain conditions to highlight objects and enhance contrast. The light output of these bulbs is made up of a much longer wavelength band of the visible light spectrum. White light that is made up of all colors of the spectrum tends to scatter or disperse differently off fog droplets, rain droplets and snow causing a blurry, white out or dispersion effect. Most drivers have experienced this when they turn on their high beams in fog and everything seems to blend together in front of them. Using a single color, longer wavelength band of the spectrum reduces this dispersion. Human eyes are most sensitive to amber and green colors that have a longer wavelength. These longer wavelength colors scatter the least and reflect the most visible light back to the driver under these conditions. That is why amber color output is still the color of choice for most fog lamps.
Auto fog light bulb H3( PK22S )
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Key influences on the life of a typical headlight bulb
- The temperature and climate in which the vehicle is operated in.
- The level of usage, for example if the vehicle is driven in an area where there are less hours of daylight or the dipped beam of the vehicle is used throughout the day, such as the use of daytime running lights.
- The quality of the materials used - this is why it is recommended to use an original equipment manufacturer
- The type of bulb - i.e. longer life, maximum performance - see more info below.
- Road conditions and engine vibration - modern driving conditions with pot-holes, speed bumps and traffic calming measures can increase vibration and reduce longevity.
- Installation errors - if the glass of a bulb was touched during installation, or it was not correctly secured.
For other types of bulb, please click here:
Halogen bulb
HID bulb
Led bulb
Factory Pictures:
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