Vehicular Lamp Merging High and Low Beam Optical Systems
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Solution Overview
Problem
Existing vehicular lamps experience changes in the light emitting region when switching between high beam and low beam light sources, leading to inconsistent lighting patterns.
Innovation Solution
A vehicular lamp design featuring a front lens body with adjacent first and second optical systems, where the first optical system includes a high beam or ADB rear lens unit and light source, and the second optical system includes a low beam rear lens unit and light source, with adjusted diffusion angles to ensure the light emitting region remains consistent when switching between light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate lens units are used for high beam and low beam light sources, then each light source can form its own light distribution pattern, but the light emitting region changes when switching between light sources
Solution Approach 1:
The patent merges the high beam and low beam optical systems into a single integrated lens unit. This unified lens unit receives light from both light sources and forms both light distribution patterns through the same optical path, ensuring the light emitting region remains stable and consistent regardless of which light source is active.
Solution Approach 2:
The single lens unit is designed to perform multiple functions: it forms both the high beam light distribution pattern and the low beam light distribution pattern. This multi-functional design allows the same optical component to handle different light sources while maintaining a consistent light emitting region geometry.
2Adaptability or versatility
If both high beam lens and low beam lens emit light simultaneously, then high beam light distribution pattern can be formed, but the lighting pattern becomes inconsistent when switching between modes
Solution Approach 1:
By combining both optical systems into one lens unit, the patent ensures that the physical light emitting region remains constant. This eliminates the inconsistency problem where different lens units would create different visible regions during mode switching, thereby improving reliability and visual consistency.
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 design maintains a stable light emitting region when turning off and on the high beam or ADB light source and low beam light source, providing a consistent lighting appearance and preventing dark spots, thus enhancing the visual effect of continuous light emission.
Implementation Method 1
a cylindrical lens for condensing light emitted forward from the LEDs in the vertical direction of the vehicular lighting fixture
Implementation Method 2
light which is irradiated forward permeating the first rear lens unit and the front lens body in that order to form a first headlamp light distribution pattern
Data Source
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AI summary
A vehicular lamp comprising a front lens body extending in a predetermined direction, and a first optical system and a second optical system disposed adjacent to each other along the predetermined direction behind the front lens body, the first optical system includes a first rear lens unit, and a first light source which emits light which is irradiated forward permeating the first rear lens unit and the front lens body, the second optical system includes a second rear lens unit, and a second light source which emits light which is irradiated forward permeating the second rear lens unit and the front lens body, wherein the light from the first light source forms a first light emitting region in the front lens body, and the light from the second light source forms a second light emitting region which overlaps with the first light emitting region in the front lens body.