High beam lamp adjusts the intensity of light according to the distance of filament. At the focus of the high beam, the light will be emitted in parallel, and the light will be concentrated and bright, so it can shine on objects far away and high. The low beam lamp is out of focus (between 1 and 2 times the focal length), and the light emitted diverges, which can illuminate a large range of objects nearby.
The difference between high beam and low beam;
They are all used for night lighting, but the high beam has a high angle and a long distance, and the low beam has a low angle and a short distance.
Application mode
Driving at high speed in the suburbs, without street lights, you can turn on the high beam and broaden your horizons. However, when there is a car across the street that needs to meet, for the sake of safety and courtesy, switch to low beam.
Using high beam at low speed at night will also increase the fuel consumption of vehicles, which is obviously not cost-effective at high oil prices.
affect
High beam can improve the line of sight and expand the observation field of vision. On the dark road without street lamps, the visual range after turning on the high beam is much larger than that after turning on the low beam only. So in this environment, it is very necessary to turn on the high beam. From the following renderings, we can easily see the advantages of high beam.
hidden trouble
Hidden danger 1: instant blindness.
Hidden danger 2: the perception of speed and distance is reduced.
Hidden danger 3: the width judgment drops.