Optically Effective Element Diffractive Structure Encapsulation
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Solution Overview
Problem
Existing optically effective elements and optoelectronic components face challenges in effectively shaping and attenuating light beams, particularly in ensuring eye safety and robustness against external influences, due to limitations in beam shaping and protection mechanisms.
Innovation Solution
The development of an optically effective element comprising a carrier with a diffractive or multi-lens structure on its top side, covered by a secure layer, which allows electromagnetic radiation to pass through while providing protection against external damage and contamination, and can include multiple diffractive structures for enhanced beam shaping and attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a diffractive optical element is used for beam shaping and attenuation, then eye safety is improved, but the element becomes vulnerable to external influences and damage
Solution Approach 1:
A robust encapsulation structure is provided beforehand to protect the diffractive optical element from external influences such as moisture, oxygen, and mechanical damage. This encapsulation prevents degradation of the optical element while maintaining its beam shaping and attenuation functions for eye safety.
Solution Approach 2:
The diffractive optical element is nested within a protective encapsulation structure that includes multiple layers (e.g., first encapsulation layer, second encapsulation layer) with intermediate structures. This nested configuration allows the optical element to be protected from external harmful factors while maintaining its functional performance.
2Productivity
If the optically effective structure is exposed to achieve optimal optical performance, then beam shaping efficiency is improved, but the structure becomes susceptible to contamination and damage
Solution Approach 1:
The encapsulation structure is designed with local quality variations - certain regions provide optical access while other regions provide protective encapsulation. This allows the optically effective structure to maintain exposure for beam shaping efficiency while specific areas are protected from contamination and damage through selective encapsulation layers.
Solution Approach 2:
An intermediate encapsulation layer is introduced between the optically effective structure and the external environment. This intermediary layer allows optical functions to proceed while protecting the structure from direct exposure to harmful external factors such as moisture, oxygen, and physical damage.
3Object-affected harmful factors
If encapsulation is added to protect the optical element, then robustness against external influences is improved, but device complexity increases
Solution Approach 1:
The encapsulation structure is designed to perform multiple functions simultaneously: protecting against moisture, oxygen, mechanical damage, and thermal stress, while also providing structural support and enabling mounting. This multi-functionality reduces the need for separate protective components, thereby limiting the increase in device complexity.
Solution Approach 2:
The encapsulation layers are merged with the mounting structure and housing integration, combining protective functions with structural and mechanical functions. This merging approach achieves robustness against external influences while avoiding the addition of separate complex protective systems.
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 enables effective beam shaping and attenuation, ensures eye safety by controlling light patterns, and protects the optical components from environmental influences, enhancing their robustness and functionality.
Implementation Method 1
diffractive optical elements and multi-lens arrays are known and used, for example, to generate light patterns and attenuate light beams
Implementation Method 2
multi-lens arrays are known and used, for example, to generate light patterns and attenuate light beams
Data Source
AI summary
An optoelectronic component includes an optoelectronic semiconductor chip configured to emit electromagnetic radiation; an optically effective element arranged such that electromagnetic radiation emitted by the optoelectronic semiconductor chip passes through the optically effective element; and a housing, wherein the optoelectronic semiconductor chip is arranged in a cavity of the housing, the optically effective element includes a carrier, a first optically effective structure arranged on a top side of the carrier, and a cover arranged above the first optically effective structure.