Vehicle Lamp Outer Lens with Integrated Reflecting Portion
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Solution Overview
Problem
Existing vehicle lamps have a large overall volume due to the size of the inner lens required for light emission, which affects the compactness of the lamp.
Innovation Solution
The outer lens is designed with a first lens portion and a reflecting portion on at least one side, allowing light to be propagated internally without air, thus reducing the volume. This design includes an intermediate film with an intermediate reflecting layer and optional coatings for light management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional inner lens is used for light emission, then the light emission function is achieved, but the overall volume of the vehicle lamp becomes large
Solution Approach 1:
The patent combines the light guide function and light emission function into a single outer lens component. The outer lens integrates internal light propagation paths with reflective portions, eliminating the need for a separate inner lens. This merging of functions reduces the overall number of components and the total volume of the vehicle lamp while maintaining effective light emission.
Solution Approach 2:
The outer lens is designed to perform multiple functions: it serves as both the light guide structure and the light emission interface. The reflective portions within the outer lens enable light redirection and distribution, while the emission portions allow light to exit. This multi-functionality consolidates what would traditionally require separate components, reducing overall lamp volume.
2Illumination intensity
If an air layer is present between lens portions for light propagation, then light transmission is achieved, but the outer lens occupies more space
Solution Approach 1:
The patent changes the optical parameter of the medium between lens portions from air to a transparent material with different refractive properties. This material filling allows for more compact light propagation paths and enables the use of reflective portions to redirect light within the condensed space, reducing the overall volume occupied by the outer lens while maintaining effective light transmission.
3Productivity
If reflective portions are added to the outer lens for light propagation, then the light path is optimized, but the structural complexity increases
Solution Approach 1:
The reflective portions are integrated directly into the outer lens structure rather than being separate components. This merging approach allows the outer lens to serve dual purposes: guiding light through its geometry and reflecting light through built-in reflective portions. The integration reduces the number of discrete parts and simplifies assembly while optimizing light propagation paths.
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 outer lens design reduces the overall volume of the vehicle lamp while ensuring uniform light output, as the light is efficiently propagated and managed within the lens structure.
Implementation Method 1
a reflecting portion, the reflecting portion being disposed on at least one side of the first lens portion, in close contact with the first lens portion, and capable of reflecting a light beam entering the first lens portion so that the light beam is propagated inside the first lens portion
Data Source
AI summary
A problem to be solved by an embodiment of the present application is how to make the structure of a vehicle lamp more compact. According to an embodiment of the present application, an outer lens is provided, wherein the outer lens comprises: a first lens portion; and a reflecting portion, the reflecting portion being disposed on at least one side of the first lens portion, in close contact with the first lens portion, and capable of reflecting a light beam entering the first lens portion so that the light beam is propagated inside the first lens portion. Compared with the prior art, the present application has the following advantages: the structure of the outer lens is more compact, the overall volume of the vehicle lamp is smaller, and the light output is more uniform.