Vehicle Lamp Module Uniform High Beam Brightness
Solution Overview
Problem
Existing vehicle lamp designs suffer from non-uniform high beam brightness, leading to brightness gradients that cause interference and potential safety hazards due to the combination of low and high beams.
Innovation Solution
A vehicle lamp module with a low beam, high beam, and auxiliary high beam modules, utilizing reflection cups and lenses to distribute light uniformly across the beam pattern, including an auxiliary high beam module to supplement light to darker areas below the cut-off line, enhancing brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If high beam is formed by superposing low beam light and high beam light without switching the shading plate, then the structure is simplified, but an obvious brightness gradient appears in the combined high beam causing interference to drivers
Solution Approach 1:
The high beam light source is segmented into multiple independent LED chips (first high beam LED chip and second high beam LED chip) with different luminous intensities. The first chip has higher luminous intensity for the upper region, while the second chip has lower luminous intensity for the lower region. This segmentation allows independent control of light intensity in different regions, eliminating the brightness gradient caused by simple superposition of low and high beams.
2Ease of operation
If a conventional shading plate is used to form low beam, then the light and shade cut-off line is formed, but the high beam formed by combining low beam and high beam shows non-uniform brightness
Solution Approach 1:
Different regions of the light source are assigned different luminous characteristics. The first high beam LED chip is positioned to illuminate the upper region with higher intensity, while the second high beam LED chip illuminates the lower region with lower intensity. This local quality differentiation ensures that the combined high beam achieves uniform brightness distribution across the entire beam pattern, solving the non-uniformity problem while maintaining the conventional shading plate structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides high beams with more uniform brightness by supplementing light to darker areas, reducing brightness gradients and improving road surface lighting effects and safety.
Implementation Method 1
Divergent light emitted by the light source is reflected by a reflection cup and then converged near a perifocus of the reflection cup
Implementation Method 2
forms a light and shade cut-off line after being shielded by the shading plate and is imaged to a road surface through a collimating lens
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to a vehicle lamp module of a vehicle lighting device. The vehicle lamp module comprises a lens (4), a shading plate (3) with a cut-off line structure (31) at one end, a low beam module, and a high beam module. Light emitted by the low beam module is suitable for being intercepted by the shading plate (3) and then emitted to the lens (4) to form a low beam type. Light emitted by the high beam module is suitable for being intercepted by the shading plate (3) and then emitted to the lens (4) to form a main high beam type located above a light and shade cut-off line. The vehicle lamp module further comprises an auxiliary high beam module, and light emitted by the auxiliary high beam module is suitable for being intercepted by the shading plate (3) and then emitted to the lens (4) to form an auxiliary high beam type located below the light and shade cut-off. The vehicle lamp module can provide high beam with more uniform brightness.