Why is liquid silicone optical lens more and more widely used in car headlights?

  With the development of automotive optical products, lens-type headlights have become a major trend. It has not only been widely used in high-end cars, but also gradually promoted to middle and low-end cars. Liquid silicone optical lenses, such as the lens of the human eye. Traditional automotive lenses mostly use glass optical lenses, which have the advantages of high light transmittance, high hardness, and aging resistance. It has unparalleled advantages in automotive applications. However, it also has disadvantages, such as high price, easy to break, difficult to process, etc. Since then, with the development of materials, molds and injection molding technology, PC and PMMA optical lenses have entered the market. Their good processing properties reduce production costs compared to glass. However, the yellowing defect also plagues most automakers. Therefore, the demand for liquid silicone optical silicone lenses came into being.

The advantages of liquid optical silicone are high light transmittance, up to 94% light transmittance, and excellent stability against ultraviolet rays and blue light. Car headlights use high-power light sources. Although the new generation of LED systems have the characteristics of low power consumption and high brightness output, the lighting temperature of ordinary models is as high as 150 ° C. Under the combined effect of high temperature and high radiation, it is easy to accelerate the existing optical heat. The aging of the plastic lens shortens the service life of the LED system. The physical stability of the silicone lens can completely solve the problem of lens yellowing.

The LEDs encapsulated in the liquid optical silicone lens have obvious anti-yellowing properties. Compared with halogen headlights, the low beam illumination range of optical silicone lens headlights is wider, more uniform and brighter. The cutting line of the low beam is more obvious, and its strong lighting effect will not affect the line of sight on the opposite side at night. The high-beam lighting effect exceeded the expectations of halogen lamps. The mechatronics silicone optical lens dimming system is far superior to halogen headlights in terms of far and near light switching, and its switching speed is faster than lightning, which also means that night driving becomes safer.

The liquid optical silicone material has high transparency, no cracking resistance, high and low temperature resistance, and at the same time, this highly transparent material has low viscosity and low injection pressure, and has excellent processing performance, especially in the field of LED lamps and optical lenses. Lighting optical components are free to design, high fluidity helps to realize complex microstructure design, and liquid optical silicone can be directly injection-molded on the chip layer, reducing production costs.

What's more, injection-moldable optical silicone lenses offer excellent thermal stability and unprecedented design flexibility in emerging automotive adaptive driving lighting applications. Because liquid silicone offers the perfect combination of processing characteristics, optical properties and hardness, it enables complex optical products to produce surface textures that are not significantly different from traditional optical plastics. These properties are expected to enhance the application of ADB in automotive lighting, providing optical designers with valuable tools to redefine the future of automotive lighting.

Dongguan Hopewell Silicon Plastic Tech Co., Ltd.  is very familiar with the characteristics of liquid optical silicone, has rich experience in processing high-precision optical silicone lenses, and provides various customized silicone optical lenses for many well-known brands. Welcome to contact us to customize liquid injection molding silicone optical lens.