There are 4 types of car lights on the market so far, namely: halogen car lights, xenon car lights, LED car lights and laser car lights. But do you really know the advantages and disadvantages of these 4 types of lights?
A: Halogen car lights
The halogen car light is composed of a halogen bulb + a bulb reflector, or a bulb + a single and double lens. The types of halogen bulbs that can be used as headlights are: H1, H4, H7, etc. When designing the car lights in the early stage, it is necessary to consider whether the halogen light source is matched with the reflector silver bowl or the single and double lens, because the reflector must be based on The light source is used to distribute the light, to achieve the light concentration, without astigmatism, there is a cut-off line of light and dark. The single and double lens has been equipped with the light type before leaving the factory. What are the advantages and disadvantages of the different halogen car lights?
B: Xenon car lights
Xenon car light is a lamp with a xenon bulb as the light source + single and double lens. The principle of the xenon bulb is that the bulb transistor is filled with inert gas including xenon, and the voltage is increased to more than 23000v through the ballast. The xenon gas forms an arc between the two electrodes and emits light!
In 2001, xenon car lights began to enter the Chinese market. Because the brightness is three times that of halogens, and the color temperature is close to the noon sunlight, it makes our eyes more comfortable, so it quickly swept the entire Chinese market! And xenon lamp has so many advantages, what are the disadvantages? The summary is as follows:
C: LED car lights
As everyone pays more and more attention to environmental protection, the carrier of LED (light emitting diode) as the light source has entered our field of vision, and has quickly swept the entire Chinese car lamp market. Why are LED car lamps adopted by major car brands? I summarize the reasons as follows:
a: Small size, it is easier to design various shapes when the car lamp factory is docked with the OEM.
b: The power is small, the brightness of LED and xenon lamp is similar, but the power of LED is much lower than that of xenon lamp, so it is safer, more energy-saving and environmentally friendly.
c: Long life, LED light source lighting time can reach 100,000 hours.
d: The response time is fast, which is more secure than the instant start of the xenon lamp.
Having said so many advantages, does the LED light source have any disadvantages? The answer is definitely there. The summary is as follows:
D: laser lights
The principle of laser headlights is similar to that of LED headlights. LED headlights directly convert electrical energy into light energy through light-emitting diodes, while laser headlights convert electrical energy into laser light through laser diodes.
Laser headlights can illuminate any obstacle ahead. Naturally, the safety of night driving can be greatly improved. Moreover, the directionality of the laser car lights is particularly good, not easy to astigmatize, so the irradiation distance is up to 1000 meters, and the distance is twice that of the LED high beam. However, these seemingly awesome advantages will inevitably lead to high manufacturing costs. After all, now only luxury flagship models can be equipped, such as the price of a separate option is tens of thousands of yuan.