Optical Component Light Extraction Heat Dissipation
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Solution Overview
Problem
Existing light emitting devices with LEDs or laser diodes face challenges in achieving high output and brightness due to limitations in light extraction efficiency and heat dissipation, particularly in maintaining stable optical characteristics under high-output light sources.
Innovation Solution
The optical component comprises a support member with a through-hole, a second light-transmissive member fixed inside using a first light-transmissive member, and optionally a third light-transmissive member, along with functional films like filters or heat dissipation members, to enhance light emission and heat management, ensuring efficient light extraction and thermal dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light-transmissive member is disposed in the through-hole to improve light extraction efficiency, then light output is improved, but heat dissipation becomes insufficient
Solution Approach 1:
The patent divides the functional film into multiple segments: a light-transmissive member for light extraction and a heat dissipation member for thermal management. These segments are disposed at different locations on the light-transmissive member, allowing simultaneous optimization of light output and heat dissipation without compromising either function
Solution Approach 2:
Different regions of the light-transmissive member are assigned different functional films with specialized properties. The light-transmissive member is optimized for optical performance while the heat dissipation member is optimized for thermal conduction, creating local quality variations that resolve the contradiction between light extraction and heat dissipation
2Illumination intensity
If a reflective film is provided to the support member to improve light extraction efficiency, then light output is improved, but heat accumulation increases
Solution Approach 1:
The patent extracts the heat dissipation function from the reflective film by introducing a separate heat dissipation member. This allows the reflective film to focus solely on light extraction while the heat dissipation member handles thermal management, preventing heat accumulation that would occur if both functions were combined in a single film
3Illumination intensity
If multiple functional films are disposed on the light-transmissive member to enhance performance, then light extraction and heat dissipation are improved, but device complexity increases
Solution Approach 1:
The heat dissipation member serves multiple functions: it dissipates heat from the light-transmissive member, provides structural support, and can be configured in various patterns (continuous or discontinuous) to adapt to different device requirements. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while achieving enhanced performance
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
This configuration significantly improves light output and brightness while maintaining stable optical characteristics over time, even with high-output light sources, by efficiently extracting light and dissipating heat, thus enhancing the performance and reliability of light emitting devices.
Implementation Method 1
at least one functional film selected from a group consisting of a short pass filter, a long pass filter, and a heat dissipation member and disposed on a surface of the second light-transmissive member
Implementation Method 2
a light-transmissive member disposed in the through-hole, and having a light incidence face, a light emission face, and an outer peripheral side surface, and light from the light source is emitted via the light-transmissive member
Implementation Method 3
light extraction efficiency is improved by providing a reflective film to the support member
Data Source
AI summary
An optical component includes a support member having a through-hole, a second light-transmissive member disposed inside the through-hole, and having a light incidence face, a light emission face, and an outer peripheral side surface, and at least one functional film selected from a group consisting of a short pass filter, a long pass filter, and a heat dissipation member and disposed on a surface of the second light-transmissive member.