Vehicle Lamp Light-Guiding Assembly With Cross-Coupled Optical Paths
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Solution Overview
Problem
Existing vehicle lamps have low utilization of light emitted by light-emitting components sharing the same light coupling surface, limiting their ability to achieve defined light distribution and functions.
Innovation Solution
A light-guiding assembly comprising two light-guiding elements with intermediate optical portions, reflecting and spacing regions arranged alternately, allowing light from one source to be deflected and coupled into the other, enhancing light distribution and utilization through collimating structures and diffusion at the exit portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple light-emitting components share the same light coupling surface, then device complexity is reduced, but light utilization efficiency deteriorates
Solution Approach 1:
The light-guiding body is divided into multiple light-guiding elements, each with dedicated light-guiding portions for different light-emitting components. This segmentation allows each component to have its own optimized light path, improving light utilization while maintaining a relatively simple integrated structure.
Solution Approach 2:
The patent introduces intermediate optical portions and uses three-dimensional spatial arrangement of light-guiding portions at different positions and angles. This dimensional approach enables multiple light sources to be efficiently coupled without overlapping conflicts, resolving the contradiction between sharing a coupling surface and maintaining light efficiency.
2Ease of manufacture
If multiple light-emitting components share the same light coupling surface, then ease of manufacture is improved, but light distribution precision deteriorates
Solution Approach 1:
By segmenting the light-guiding body into distinct light-guiding elements with dedicated portions for each light-emitting component, the patent enables precise control of light distribution for each function while maintaining a manufacturable integrated structure through standardized coupling interfaces.
Solution Approach 2:
Each light-guiding element is designed with specific local optical properties and geometries optimized for its designated light-emitting component and function. This local optimization allows precise light distribution control for different lighting functions while using the same manufacturing processes for the overall assembly.
3Device complexity
If light is guided in a straight line from incidence to exit, then device complexity is reduced, but adaptability of light functions deteriorates
Solution Approach 1:
The light-guiding elements incorporate intermediate optical portions with reflecting regions that dynamically redirect light paths based on the required function. This allows the same physical structure to adapt to different lighting functions (daytime running, position, turn indicator, brake lamps) by controlling which light-guiding portions are activated, without increasing structural complexity.
Solution Approach 2:
The light-guiding assembly is designed as a universal system where multiple light-emitting components and their corresponding light-guiding elements can serve different lighting functions through the same basic structure. The intermediate optical portions enable a single assembly to perform multiple functions by selectively guiding light from different sources through different 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
Enables improved light distribution and utilization, allowing for pre-defined functions like daytime running, position, turn indicator, and brake lamps using the same light exit area, with reduced weight and complexity.
Implementation Method 1
the first intermediate optical portion is provided with a first reflecting region and a first spacing region that are arranged alternately with each other in steps, and the second intermediate optical portion is provided with a second reflecting region and a second spacing region that are arranged alternately with each other in steps, wherein the first reflecting region and the second reflecting region are arranged so as to reflect light towards the second light exit portion
Data Source
AI summary
The present invention relates to a light-guiding assembly having a first light-guiding element, which is allocated to a first light source and used to receive and guide light from the first light source, and is provided with a first light incidence portion, a first light exit portion, and a first intermediate optical portion that is arranged between them. A second light-guiding element, which is allocated to a second light source and used to receive and guide light from the second light source, and is provided with a second light incidence portion, a second light exit portion, and a second intermediate optical portion that is arranged between them. Wherein the first light exit portion faces the second intermediate optical portion, and light leaving the first light exit portion can pass through the second intermediate optical portion and exit from the second light exit portion.