Reflection-Type Headlamp Module with Folded Optical Path

The patent changes the optical path from a linear one-dimensional arrangement to a two-dimensional folded path by introducing a reflecting mirror. The light path now travels from the light source through the reflecting cup, then reflects off the mirror at an angle, and finally passes through the collimating lens. This dimensional change allows the optical components to be arranged in a compact configuration, significantly reducing the front and rear length of the headlamp module while maintaining effective optical functionality.

The patent replaces the mechanical driving mechanism with an optical control approach. Instead of physically moving components to switch between high-beam and low-beam modes, the system uses a controllable reflecting mirror that can be positioned or angled to direct light differently. This substitution of mechanical movement with optical redirection eliminates abrasion, reduces noise, and enables faster switching responses, thereby improving reliability while maintaining the dual-beam functionality.

The patent extracts or removes the light shielding plate from the high-temperature zone near the light source and reflecting cup focus. Instead of placing the shielding plate where it would be exposed to intense heat, the design positions it in a cooler region of the optical path. This extraction from the thermal environment prevents the loosening and clamping stagnation issues that would otherwise occur in the driving mechanism, while the low-beam light pattern is still successfully formed through the modified optical arrangement.