Compact high-beam and low-beam reflection cup electric motorcycle headlamp sharing cylindrical large lens

By using a compact, shared cylindrical large lens with reflector cups for both high and low beams, the problem of large size and low luminous efficiency of electric motorcycle headlights has been solved. This has resulted in smaller headlight size, improved luminous efficiency, and simplified assembly, reducing production costs and extending service life.

CN224284300UActive Publication Date: 2026-05-26DONGGUAN LIANLONG OPTOELECTRONIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN LIANLONG OPTOELECTRONIC TECH CO LTD
Filing Date
2025-08-11
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Traditional electric motorcycle headlights are large, complex to assemble, and have low luminous efficiency, resulting in high labor costs, low space utilization, and poor optical performance.

Method used

The design of the high and low beam reflectors adopts a compact shared cylindrical large lens. By combining parabolic and ellipsoidal reflectors with the cylindrical large lens, the coaxial distribution of the high and low beam light source components is achieved. The design of optical grade PC lens and mounting base optimizes the light efficiency and assembly process.

Benefits of technology

It achieves a 35% reduction in headlight size, an increase in luminous efficacy to 87%, a 40% reduction in assembly steps, a 22% reduction in labor costs, an extension of lamp life to over 50,000 hours, and a significant improvement in light pattern purity and uniformity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of electric motorcycle lighting equipment, in particular to a compact high-beam and low-beam reflection cup electric motorcycle headlamp sharing a large cylindrical lens, which comprises a reflection cup main body, the large cylindrical lens, a high-beam light source assembly, a low-beam light source assembly and a mounting base. The high-beam reflection cup and the low-beam reflection cup are axially distributed along the center shaft, the requirement for the narrow space of the head of the power motorcycle is reduced to 78 mm * 55 mm from 120 mm * 80 mm in the traditional scheme, the focus of the high-beam paraboloid reflection cup and the focus of the low-beam ellipsoid reflection cup are precisely aligned with a light source, the curvature design of the cylindrical large lens is matched, the front surface R1 is 30 mm, the center thickness H1 is 5 mm, the high-beam light efficiency utilization rate is increased to 87% from 65%, and the high-beam light efficiency utilization rate is increased to 87% from 65%. The low-beam uniformity deviation is reduced from 15% to 3%, a traditional double-lens structure and a vertical heat dissipation channel of the installation base are omitted, the temperature resistance of an optical-grade PC lens is matched, and the temperature of the lamp is stabilized to be below 65 DEG C after the lamp continuously works for 4 hours.
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