Light Emitting Device Defining Member Spacing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light emitting devices face issues with contact between light sources and light guide members, leading to reduced light incidence efficiency.
Innovation Solution
A light emitting device configuration that includes a light source, a light guide member, and a defining member with a spacer and glass plate to maintain a distance between the light source and the light guide member, preventing contact while optimizing light transmission and incidence efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the light source is placed close to the light guide member to improve light incidence efficiency, then the light incidence efficiency is improved, but contact between the light source and light guide member occurs causing reliability deterioration
Solution Approach 1:
The patent introduces a defining member as an intermediary component between the light source and light guide member. This defining member includes a light passage member and a light transmission member that together create a controlled air gap, allowing light to pass through while preventing direct contact. The intermediary structure resolves the contradiction by enabling close proximity for high light incidence efficiency while maintaining separation for reliability.
2Reliability
If a defining member is introduced to prevent contact between light source and light guide member, then reliability is improved, but device complexity increases
Solution Approach 1:
The defining member combines multiple functions into a single integrated component. It merges the light passage function (allowing light transmission) and the spacing function (preventing contact) into one defining member structure. This merging approach reduces device complexity compared to using separate components for each function, while still achieving reliable contact prevention.
Solution Approach 2:
The defining member serves multiple purposes simultaneously: it acts as a spacer to maintain distance, a light guide to transmit light, and a structural support element. This multi-functionality reduces the overall number of components needed in the system, thereby reducing device complexity while maintaining reliability improvements.
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
Prevents contact between the light source and light guide member, maintaining light incidence efficiency and reducing the risk of failure or color shift in the emitted light.
Implementation Method 1
a light transmission member configured to transmit the light between the light passage member and the light incident end surface
Data Source
AI summary
A light emitting device includes a light source, a light guide member, and a defining member. The light source is configured to emit light. The light guide member is configured to guide the light and having a light incident end surface on which the light is to be incident. The defining member is arranged between the light source and the light guide member to define a distance between the light source and the light incident end surface of the light guide member. The defining member includes a light passage member configured to allow the light to pass between the light source and the light incident end surface, and a light transmission member configured to transmit the light between the light passage member and the light incident end surface. The light source is spaced apart from the light transmission member.