Evaluation of light parameters of H halogen bulbs

There are many types of automotive bulbs available on the market. Many drivers, when buying bulbs for their cars, wonder which ones to choose, often guided by subjective assessment when selecting products in colorful and transparent packaging. Manufacturers provide information on the packaging intended to encourage the choice of a given product. Most often, these are inscriptions like “xenon,” and the bulbs inside the packaging have a blue filter coating. We also encounter inscriptions like +30%, +50%, +90% “more light on the road.” However, such bulbs do not always provide the expected results. Modified bulbs do not necessarily provide better road illumination, giving us only a subjective feeling of better visibility.On the market, one can find H halogen bulbs from various manufacturers who compete in advertisements claiming their “best parameters.” This paper presents measurements performed for H halogen bulbs without a reflector and with bulbs mounted in a traditional reflector allowing for driving on low beam or high beam lights.
Only the bulb filament used for low beam driving was tested, as it is used most frequently.
The largest group of halogen bulbs found on the market are standard products, which have a clear bulb, a regular filament, and a dark anti-glare cap. (…)

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