The lamps commonly seen in the market are basically divided into two groups. The domestic lamps occupy ultra-low price, and the imported lamps become synonymous with burning packets. The difference between the quality of domestic lamps and the quality of imported lamps is mainly reflected in the following three aspects.
1, the accuracy of the light type. Most of the domestic lamp reflectors are not shaped by computer-aided design. Instead, they use a mode of overturning and pirate directly from the molded product. For more detailed things, few manufacturers really go deep into the research. For headlights, a final light pattern depends not only on the design of the reflector bowl, but also on the lens section (clear glass or polyester cover on the front of the headlights). It is completely achievable to completely simulate the two, but when it comes to the refractive index of the lens and the non-dot light source provided by the halogen filament, the accuracy of the light type is difficult to be easily copied.
2. The high temperature resistance and oxidation resistance of the reflective bowl coating. The most intuitive feeling of the coating of the reflective bowl is the reflectivity. Usually, the newly purchased lights can achieve a good reflection effect. Only on the surface of the reflectors with poor coating quality can be found a large number of visual quality problems such as bubbles, impurities and protrusions. Normally, the product of normal quality will never let you see this, because this situation is a defective product for the general quality control system. However, the place where we really distinguish between quality products and by-products is the intrinsic quality of the reflective film.
3, the lens's impact resistance, light transmittance and temperature resistance sudden change ability. The so-called lens is the transparent mask in front of the luminaire, usually made of two types of materials: glass and polyester. The biggest advantage of polyester products is its impact resistance. The stone shattered glass lampshade and windshield rolled up by the front tires on the gravel road are probably the heartache of many car lovers, and the polyester products are encountered. In this case, usually only a small white pockmark is left, or there are several extremely fine cracks in the turtle, which will not affect the use of the entire lamp.
