Vehicle Lamp Lens Array with Slanted Reflective Faces
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Solution Overview
Problem
Conventional vehicle lamps, such as headlamps, occupy a larger depth in the front-rear direction due to the arrangement of reflective boards, light shielding boards, and lenses, which limits their compactness and integration with vehicle body designs.
Innovation Solution
The vehicle lamp incorporates a light emitting unit with a circuit board and light emitting members, and an optical unit featuring a lens with a light incident portion, a reflective portion with an array of reflective faces, and a light output portion. This configuration allows for a slanted arrangement of the lens and reflective faces, reducing the overall volume and enabling a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional headlamp includes a reflective board, light shielding board, and lens disposed in front of the light emitting device, then the headlamp can form high beam or low beam patterns, but the headlamp occupies a larger depth in the front-rear direction
Solution Approach 1:
The patent merges the reflective board and lens into a single integrated optical unit. The reflective portion is formed as an integral part of the lens structure, eliminating the need for separate reflective boards and light shielding boards. This integration maintains the beam pattern formation capability while significantly reducing the overall depth of the headlamp assembly.
Solution Approach 2:
The optical unit serves multiple functions simultaneously: the light incident portion collects light from the LED, the reflective portion redirects light rays to achieve desired beam patterns, and the light output portion projects the formatted light forward. This multi-functional design replaces multiple separate components with a single unified structure.
2Adaptability or versatility
If the lens has a tilt design to cooperate with the slopes of two sides of the front end of the vehicle, then the lens can accommodate vehicle body slopes, but the protrusion at the front end of the tilted lens is still large and occupies considerable space
Solution Approach 1:
The patent introduces a slanted arrangement along a second direction that is angled relative to the front-rear direction (first direction). This dimensional change allows the optical unit to accommodate vehicle body slopes while reducing the protrusion in the front-rear direction by distributing the structure along a different spatial orientation.
Solution Approach 2:
The optical unit employs an asymmetric slanted design where the light output portion is arranged at an angle relative to the front-rear direction. This asymmetric configuration allows the lens to cooperate with sloped vehicle surfaces while minimizing the forward protrusion, creating a more compact appearance from the front view.
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 compact design of the vehicle lamp reduces its forward protrusion, enhancing its integration with vehicle body shapes while maintaining effective light output and beam patterns, such as high beams, low beams, or their combinations.
Implementation Method 1
The reflective portion includes a plurality of reflective faces arranged in an array. The at least one light emitting member emits light rays which pass through the light incident portion into the at least one lens. The reflective portion reflects the light rays to the light output portion to thereby output the light rays.
Data Source
AI summary
A vehicle lamp is mounted on a vehicle body in which a front-rear direction of the vehicle body is a first direction. The vehicle lamp comprises a light emitting unit and an optical unit. The light emitting unit includes at least one light emitting member. The optical unit includes at least one lens having a light incident portion, a reflective portion, and a light output portion. The light incident portion is disposed corresponding to the light emitting member. The light output portion is disposed along a second direction at a slant angle relative to the first direction. The reflective portion includes a plurality of reflective faces arranged in an array. The light emitting member emits light rays which pass through the light incident portion into the lens. The reflective portion reflects the light rays to the light output portion to thereby output the light rays.