Light-Emitting Module Deflection for Compact, Uniform Vehicle Lamps
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Solution Overview
Problem
Existing vehicle lamps face challenges in achieving miniaturization and uniform brightness due to the need for sufficient gaps for light mixing from multiple light sources, leading to non-uniform brightness distribution.
Innovation Solution
A light-emitting module with a substrate and a deflection part that deflects light emitted from the rear surface, utilizing reflective and diffusive elements to shorten the gap required for mixing and improve brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light from multiple light sources is mixed to implement surface light emission, then surface light emission is achieved, but the gap required for light mixing increases the overall size of the vehicle lamp
Solution Approach 1:
The patent introduces a deflection part that redirects light from the first direction to a second direction, effectively utilizing spatial dimensionality to shorten the light mixing gap. By deflecting light at angles, the patent achieves sufficient light mixing within a reduced linear distance, thereby reducing the overall lamp size while maintaining surface light emission functionality
Solution Approach 2:
The deflection part acts as an intermediary component between the light sources and the mixing region. This intermediary element facilitates more efficient light redistribution and mixing, allowing the light to cover the required area with a shorter gap, thus resolving the contradiction between achieving surface light emission and minimizing lamp size
2Illumination intensity
If light from multiple light sources is mixed to implement surface light emission, then surface light emission is achieved, but the brightness uniformity decreases due to higher brightness near each light source
Solution Approach 1:
The deflection part is designed with specific geometric features that create localized light redirection patterns. By strategically deflecting light in different regions, the patent compensates for the naturally higher brightness near light sources, achieving more uniform overall brightness distribution across the surface emission area
Solution Approach 2:
The deflection part serves as a mediating optical element that redistributes light intensity across the emission surface. It intercepts light from multiple sources and redirects it to create a more homogeneous brightness pattern, effectively balancing the non-uniform brightness that would otherwise result from direct light source proximity effects
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 allows for miniaturization of vehicle lamps by reducing the space needed for light mixing and enhances brightness uniformity by diffusing light effectively.
Implementation Method 1
at least one diffusion element formed on the rear surface of the transmissive material to diffuse the light emitted in the first direction so that at least a portion of the light is deflected in the second direction via refraction and/or reflection
Implementation Method 2
a reflective surface formed on at least a portion of a rear surface of a transmissive material disposed between the substrate and a holder that is disposed behind the substrate to support the substrate
Implementation Method 3
at least one diffusion element formed on the rear surface of the transmissive material to diffuse the light emitted in the first direction
Data Source
AI summary
A light-emitting module capable of implementing surface light emission includes a substrate which is formed of a transparent material; at least one light source which is provided at a rear surface of the substrate to emit light in a first direction; and a deflection part which is disposed at the rear of the substrate and by which the light emitted in the first direction is deflected in a second direction. In particular, the deflection part includes a reflective layer formed on at least a portion of the surface of a holder, opposite to the substrate, the holder being arranged at the rear of the substrate to support the substrate; and a reflective surface formed on at least a portion of the rear surface of a transmissive material arranged between the substrate and the holder.