CSP LED Light Source with Absorbing Component for Automotive Headlamp Glare Reduction
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Solution Overview
Problem
Automotive headlamps using LED lamps often suffer from glare due to light reflection from the substrate, which is not effectively mitigated by existing designs.
Innovation Solution
A light source for a reflection luminaire is designed with a Chip Scale Package (CSP) light emitting diode and a light absorbing component on a substrate, where the light absorbing component is configured to absorb light emitted from the side surfaces of the CSP LED, preventing reflection and glare by being strategically positioned and sized relative to the light emitting component.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lamps are used as the light source for automotive headlamps, then energy efficiency and lifespan are improved, but glare is generated due to light reflection from the substrate
Solution Approach 1:
The patent applies this principle by introducing a light-absorbing component that converts the harmful reflected light into absorbed energy, preventing glare. The light-absorbing component is strategically positioned to intercept light that would otherwise reflect from the substrate and cause glare, transforming the harmful reflection into beneficial light absorption.
Solution Approach 2:
The light-absorbing component serves as an intermediary element between the light-emitting component and the substrate. It mediates the interaction by absorbing light before it can reflect off the substrate, thus preventing the glare issue while allowing the LED's energy efficiency benefits to remain.
2Object-generated harmful factors
If a light absorbing component is added to prevent glare, then glare is reduced, but device complexity increases
Solution Approach 1:
The patent merges the light-absorbing component with the existing substrate or mounting structure, integrating the glare-prevention function into the existing design rather than adding a completely separate component. This integration approach reduces the overall device complexity while still achieving glare reduction.
Solution Approach 2:
The light-absorbing component is designed to serve multiple functions: it absorbs stray light to prevent glare, provides structural support, and can be integrated with the mounting structure. This multi-functionality reduces the need for additional dedicated components, thereby limiting the increase in device complexity.
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 solution significantly reduces glare, meeting regulatory standards by minimizing light reflection from the substrate, thereby enhancing the performance of automotive headlamps.
Implementation Method 1
the light absorbing component is configured to absorb light which is emitted from a side surface of the light emitting component and incident on a surface of the substrate
Data Source
AI summary
A light source (210, 310) for a reflection luminaire, a reflection luminaire (200, 300) for an automobile and an automotive headlamp comprising the reflection luminaire (200, 300) are disclosed. The light source (210, 310) comprises a substrate (212), and a light emitting component (214), being a Chip Scale Package light emitting diode, and a light absorbing component (216) on the substrate (212). The light absorbing component (216) is configured to absorb light which is emitted from a side surface of the light emitting component (214) and incident on a surface of the substrate (212). The light source facilitates reducing or eliminating glare of a CSP LED reflection luminaire for an automobile.