Optoelectronic Component Housing with Absorbing Particles

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Solution Overview

Problem

Conventional optoelectronic components face issues with reflections of extraneous light, which can disrupt their performance, and existing solutions like radiation-transmissive or strongly reflective housings with external absorbing layers are not always effective.

Innovation Solution

Incorporating radiation-absorbing particles into the base body material and housing material to reduce reflectivity, with the option of using different or identical particles in both, and combining these with scattering particles to achieve a more homogeneous emission characteristic and reduced reflectivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a radiation-transmissive or strongly reflective housing base body is used, then the housing allows light transmission or reflection, but external light reflections become disruptive and intensity is high

Engineering Contradiction:

Improvelight transmissionVSAvoidexternal light reflections

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The patent applies different optical properties to different parts of the housing system: the base body material contains radiation-absorbing particles to reduce reflectivity, while the housing material remains transmissive for useful radiation. This local differentiation allows the housing to transmit useful light while absorbing disruptive external reflections.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses composite materials by admixing radiation-absorbing particles into the base body material and housing material. This creates a composite structure that combines the light-transmissive properties of the base material with the light-absorbing properties of the added particles, achieving both functions simultaneously.

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If a radiation-absorbing layer is applied to the exterior surface of the base body, then reflectivity is reduced, but the solution is less effective than incorporating particles into the material

Engineering Contradiction:

ImprovereflectivityVSAvoidabsorbing effect

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent embeds radiation-absorbing particles within the base body material itself, creating a nested structure where the absorbing particles are integrated into the material matrix. This provides more reliable and consistent absorption compared to surface coatings, as the absorbing properties are distributed throughout the material volume rather than confined to a surface layer.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Object-affected harmful factors

If radiation-absorbing particles are added to base body material and housing material, then reflectivity is reduced, but the concentration and type of particles must be optimized

Engineering Contradiction:

ImprovereflectivityVSAvoidparticle concentration optimization

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent systematically varies parameters such as particle concentration, particle size, and material composition to optimize the balance between light absorption and transmission. By adjusting these parameters, the housing achieves maximum reduction of external reflections while maintaining necessary light transmission for useful radiation.

Inventive Principle:

Principle #35Parameter changes

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 external light reflections and enhances the emission characteristics of optoelectronic components, providing improved performance for specific applications by minimizing reflectivity and maximizing effective emission area.

Implementation Method 1

at least one base body material of the housing base body has radiation-absorbing particles admixed in a targeted manner to reduce its reflectivity

Methodology Applied

Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 2

combining these with scattering particles to achieve a more homogeneous emission characteristic

Methodology Applied

Scientific EffectScattering: Scattering

Data Source

PatentUS8378366B2Electromagnetic radiation emitting optoelectronic component and method for manufacturing an optoelectronic component

Publication Date: 2013.02.19 OSRAM OLED

AI summary

An optoelectronic component is specified that emits a useful radiation. It comprises a housing having a housing base body with a housing cavity, and a light-emitting diode chip arranged in the housing cavity. At least one base body material of the housing base body has radiation-absorbing particles admixed in a targeted manner to reduce its reflectivity. According to another embodiment of the component, the housing additionally or alternatively has a housing material transmissive for the useful radiation that has radiation-absorbing particles admixed in a targeted manner to reduce its reflectivity. In addition, a method for manufacturing such a component is specified.