Light-Emitting Module Lens Layout for Concealed Outer Periphery
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Solution Overview
Problem
Existing light sources with two-dimensionally arranged light-emitting elements often have visible outer peripheries that detract from their appearance, especially when viewed from the light-emitting surface side, due to the presence of covering members and light-transmissive components.
Innovation Solution
A light source design featuring a covering member that collectively holds light-emitting elements and includes first and second light-transmissive members, where the second member on the outer periphery has a thinner thickness than the first, reducing external light transmission and creating a uniform appearance by minimizing the visibility of the outer periphery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a covering member is disposed on the outer periphery of light-emitting elements, then the light-emitting elements are collectively held and protected, but the outer peripheral portion becomes visually recognizable and detracts from appearance
Solution Approach 1:
The patent applies local quality by making the light-transmissive member have different thicknesses in different regions: a first thickness in the central region and a second (smaller) thickness in the outer peripheral region. This local variation in thickness allows the outer periphery to be less visually recognizable while maintaining structural support where needed, thereby resolving the contradiction between structural reliability and appearance uniformity.
2Illumination intensity
If light-transmissive members are disposed on light-emitting elements, then light transmission is enhanced, but the outer peripheral portion becomes more visible when viewed from the light-emitting surface side
Solution Approach 1:
The light-transmissive member has a first thickness in the central region for optimal light transmission and a second, smaller thickness in the outer peripheral region to reduce visibility. This local differentiation allows the central region to maintain high illumination intensity while the outer periphery remains visually subdued, resolving the contradiction between light transmission and periphery visibility.
Solution Approach 2:
The patent resolves the visibility issue by changing the thickness dimension of the light-transmissive member in the outer peripheral region. By reducing the thickness in this specific dimension, the outer periphery becomes less visually recognizable while the central region maintains its light-transmissive properties, thereby resolving the contradiction between illumination intensity and periphery visibility.
Data Source
AI summary
A light source includes a plurality of light-emitting elements, a covering member, and a plurality of light-transmissive members. The covering member is disposed between adjacent ones of the plurality of light-emitting elements and on an outer periphery surrounding an entirety of the plurality of light-emitting elements with upper surfaces of the plurality of light-emitting elements being exposed from the covering member. The covering member collectively holds the plurality of light-emitting elements. The plurality of light-transmissive members include a plurality of first light-transmissive members disposed on respective ones of the plurality of light-emitting elements, and at least one second light-transmissive member disposed on the covering member located on the outer periphery, the at least one second light-transmissive member having a thickness smaller than a thickness of each of the plurality of first light-transmissive members.