Do led headlights need a lens?

Do I need a lens for led headlights? In fact, the lens is the same as the reflective bowl, it is just a way of focusing. If the original car is a car with a reflective bowl, if the LED headlight is used, there is no need to install a lens (the prerequisite is that the LED headlight is produced by a big factory Standard light type LED headlights), why do you say that, because the position of the light point of the LED car lights produced by many small factories is not the same as the light point of the halogen lamp, so the light it emits is not reflected Above the focus of the bowl, there is serious astigmatism, which gives us the feeling that this light is bright when it is seen outside the car, but it does not shine!

Generally, the LED headlights produced by large factories have undergone long-term photometry and light distribution. Only after a long period of testing, including a series of high-temperature aging tests, will they be put into production after there is no problem; Regardless of these, they only consider the low cost, as long as they are sold and make money, this kind of lamp is generally not used for a long time, usually a few months, you will obviously feel the brightness decline, and then think that the led car should be astigmatism, Poor lighting effects are waiting for these problems!

Through the above analysis, we should have the answer to the question of whether to install a lens for the LED headlights. That is, the big brand LED headlights (compared to Philips, Master Concentrator, and Night Safety) can be installed without lenses; For the LED headlights with the wrong focus, the lens must be modified, otherwise the astigmatism is serious, the outside looks bright, and the road is not illuminated!