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Question:

What is the use of a circular cap in front of a car light bulb?

The lights are H4

Answer:

Adjust the curvature of the reflector technical parameters to achieve the best light intensity of the reflector reflector and the lamp cup on a variety of beam angle function requirements, greatly improving the LED reflective cup light efficiency and reduce the astigmatism, glare possible. The surface can be coated orange peel and smooth two effects. Can be more uniform and soft light spot, no black hole, yellow circle. Reflective high efficiency, not delamination, high temperature.
Reflective bowl with parabolic surface design, can more effectively reduce the light loss, can be modeled through the computer simulation of reflective bowl light source angle and LED reflective bowl of the spatial structure, tracking light reflection trajectory.
It is the light bulb in front of the light source back to the headlights of the large reflective bowl, reflected through the reflective bowl forward and other side of the reflected light together to form a parallel beam shines on the front of the car, minimizing the stray light, Effectively improve the projection brightness and projection distance.
It is the light bulb in front of the light source back to the headlights of the large reflective bowl, reflected through the reflective bowl forward and other side of the reflected light together to form a parallel beam shines on the front of the car, minimizing the stray light, Effectively improve the projection brightness and projection distance.

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