Optoelectronic Component Radiance Reduction via Intermediary

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Solution Overview

Problem

Optoelectronic components, particularly those with blue or UV laser diodes, face damage from high radiance leading to decomposition of substances and reduced emitted power due to the need for hermetic housings which are costly and complex to produce, and adhesives cannot be used in these environments.

Innovation Solution

A reducing device, such as an optical element, is arranged on the radiation exit side of the coupling-out device to reduce radiance by extending the coupling-out path and protect the component from environmental interactions, allowing for reduced decomposition and prolonged component lifetime without the need for hermetic housings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If high radiance electromagnetic radiation is emitted without reduction, then the emitted power is high, but decomposition of substances occurs and deposits form on the radiation exit side

Engineering Contradiction:

Improveemitted powerVSAvoidradiation-induced decomposition

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

A reducing device is introduced as an intermediary element between the coupling-out device and the environment. This device reduces the radiance of the electromagnetic radiation before it interacts with surrounding substances, preventing decomposition while allowing the component to maintain high emitted power. The reducing device acts as a mediator that modifies the radiation properties without eliminating the useful high-power output.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a hermetic housing is used to prevent decomposition, then the component is protected from environmental interactions, but the cost and manufacturing complexity increase

Engineering Contradiction:

Improveprotection from environmental interactionsVSAvoidhermetic housing structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The hermetic housing is extracted or removed from the system. Instead of using a complex hermetic enclosure to protect the component, the invention relies on the reducing device to prevent decomposition of surrounding substances. This eliminates the need for expensive hermetic housings and associated seals while maintaining protection against environmental interactions.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The high radiance, which causes harmful decomposition, is converted into a beneficial situation by using it to drive the reducing device's function. The reducing device utilizes the radiation properties to reduce radiance through controlled interaction, transforming the harmful high-radiance environment into a controlled process that prevents decomposition without requiring hermetic sealing.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Object-affected harmful factors

If the radiance is reduced by extending the coupling-out path, then decomposition is prevented, but the component size increases

Engineering Contradiction:

Improvedecomposition preventionVSAvoidcoupling-out path length

Core Design Contradiction:

Object-affected harmful factorsVSLength of stationary object

Solution Approach 1:

Instead of extending the coupling-out path in a linear direction, the reducing device introduces a dimensional change by adding a new element in the radiation path. This device reduces radiance through its presence and optical properties rather than through increased path length, achieving decomposition prevention without proportionally increasing component size.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 effectively prevents radiation-induced decomposition, maintaining constant emitted power and extending the component's lifetime while eliminating the need for complex and costly hermetic housings, and allows for the use of adhesives without compromising performance.

Implementation Method 1

A reducing device for reducing a radiance of the coupled-out electromagnetic radiation is arranged on a radiation exit side of the coupling-out device

Methodology Applied

Scientific EffectRadiance reduction through extended coupling path:

Data Source

PatentUS9509120B2Optoelectronic component

Publication Date: 2016.11.29 OSRAM OLED

AI summary

An optoelectronic component includes a generating device for generating electromagnetic radiation and an outcoupling device for coupling out electromagnetic radiation from the generating device. A reducing device for reducing a radiation density of the outcoupled electromagnetic radiation is arranged on a radiation output side of the outcoupling device.