Vehicle Lamp Lens Structure for Uniform Multi-Source Light Patterns
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Solution Overview
Problem
Existing vehicle lamps using package type light-emitting diodes face challenges in mass production yield, cost, flexibility, and are limited in implementing the same light pattern when multiple light sources spaced apart are turned on due to varying optical structures for different light types.
Innovation Solution
A vehicle lamp structure incorporating a substrate with first and second light sources and a lens that refracts and reflects light, utilizing a single optical structure to achieve the same light pattern when light sources are spaced apart, featuring a lens with overlapping elliptical portions and a fixing portion to maintain consistent light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If package type light-emitting diodes are used in vehicle lamps, then the lamp structure is established, but mass production yield is poor and cost is high
Solution Approach 1:
The patent extracts the light-emitting function from the traditional package structure and places semiconductor light-emitting devices directly on the lamp substrate. This eliminates the package type that causes manufacturing complexity and yield issues, allowing for simpler, more reliable mass production while maintaining the essential lighting function.
Solution Approach 2:
The patent creates a universal mounting structure that can accommodate different types of semiconductor light-emitting devices (LEDs, laser diodes, etc.) on the same substrate. This multi-functional approach allows for flexible device selection based on specific lighting requirements while maintaining consistent manufacturing processes, thereby improving both yield and reliability.
2Adaptability or versatility
If different optical structures are used for different light sources, then each light source can be optimized, but device complexity increases
Solution Approach 1:
The patent designs a single optical structure that serves multiple functions for different light sources. The same optical components (lenses, reflectors, diffusers) are configured to work with various semiconductor light-emitting devices, eliminating the need for separate optimized structures for each device type while maintaining adaptability.
Solution Approach 2:
The patent merges the optical functions for different light sources into a unified optical system. By combining multiple optical structures into one integrated design, the patent reduces complexity while maintaining the ability to support different light source types through strategic positioning and configuration of the semiconductor devices.
3Adaptability or versatility
If light sources are spaced apart from each other, then multiple lighting functions are achieved, but implementing the same light pattern becomes difficult
Solution Approach 1:
The patent applies local quality by positioning optical components at specific locations relative to each light source. Each optical element is strategically placed to control the light pattern from its adjacent light source, ensuring that even when light sources are spaced apart, each contributes to the overall consistent light pattern through localized optical control.
Solution Approach 2:
The patent introduces optical intermediaries (lenses, reflectors, diffusers) between the spaced-apart light sources and the external environment. These intermediary components mediate the light emission from each distant light source, transforming and harmonizing their individual light patterns into a unified, consistent overall pattern despite the spatial separation of light sources.
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 the same light pattern to be implemented when different light sources are turned on, improving flexibility and reducing the complexity of the lamp structure while maintaining consistent illumination.
Implementation Method 1
a lens that refracts and reflects light
Implementation Method 2
a lens that refracts and reflects light
Data Source
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AI summary
The present invention relates to a vehicle lamp and, more particularly, to a vehicle lamp using a semiconductor light-emitting device. The present invention provides a vehicle lamp comprising: a substrate; first and second bar-shaped light sources arranged parallel to one side of the substrate and extending along one direction thereof; and a lens disposed on one surface of the substrate and extending along the one direction so as to overlap with the first and second light sources, wherein the cross-section of the lens, which is perpendicular to the extending directions of the two light sources and cut along a virtual plane perpendicular to the substrate, includes a part of an ellipse.