Optoelectronic Component Angular Selective Dielectric Mirror
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Solution Overview
Problem
Existing optoelectronic components face inefficiencies in radiation emission and illumination due to limitations in angular and spectral selectivity of optical elements, leading to suboptimal performance in applications requiring specific beam characteristics.
Innovation Solution
Incorporating a dielectric mirror with angular selectivity between the exit surface and optical elements, which is transmissive to radiation within a predetermined angular range and reflective outside it, along with a meta lens and polarization filter to enhance radiation deflection and polarization, resulting in improved radiation distribution and coupling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional optical elements are used without angular selectivity, then the device structure is simple, but radiation emission efficiency is reduced due to suboptimal beam characteristics
Solution Approach 1:
The patent applies parameter changes by introducing a dielectric mirror with specific angular selectivity parameters. The mirror is designed to be transmissive for angles θ1 < θ < θ2 and reflective for other angles, creating optimized beam characteristics that improve radiation emission efficiency into waveguides while maintaining a relatively simple overall device structure.
Solution Approach 2:
The dielectric mirror introduces local quality differentiation by providing angle-dependent optical properties. Different angular ranges of incident radiation experience different optical responses (transmission vs. reflection), allowing selective enhancement of desired beam characteristics while suppressing unwanted directions, thereby improving coupling efficiency into waveguides.
2Productivity
If radiation is allowed to emit in all angular directions, then the device structure is simple, but coupling efficiency into waveguides is reduced
Solution Approach 1:
The dielectric mirror changes the angular distribution parameter of emitted radiation by providing angle-dependent transmission and reflection. This concentrates radiation into specific angular ranges (θ1 < θ < θ2) that match waveguide coupling requirements, significantly improving coupling efficiency while adding minimal structural complexity.
Solution Approach 2:
The mirror provides localized angular filtering, allowing radiation within specific angular ranges to pass through while deflecting radiation outside these ranges. This local quality control in angular space enables efficient waveguide coupling by matching the angular acceptance profile of waveguide modes.
3Stability of the object's composition
If conventional optical elements are used, then chromaticity distribution is non-uniform, but the device structure remains simple
Solution Approach 1:
The dielectric mirror modifies the angular distribution parameter of radiation, which indirectly improves chromaticity distribution uniformity. By controlling the angular range of transmitted radiation (θ1 < θ < θ2), the mirror ensures more uniform sampling of the emission spectrum, leading to consistent chromaticity across the output beam while maintaining a relatively simple optical structure.
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 enhances radiation emission efficiency by restricting radiation to a specific angular range, allowing complete coupling into waveguides and achieving uniform chromaticity distribution, suitable for applications like vehicle headlights and display backlighting.
Implementation Method 1
a dielectric mirror between the exit surface and the optical element, wherein the dielectric mirror is transmissive to radiation of a predetermined wavelength generated in the component and incident at angles of incidence in a predetermined first angular range, and is reflective to the radiation of the predetermined wavelength incident at angles of incidence in a predetermined second angular range
Implementation Method 2
a meta lens located downstream of the exit surface, wherein the meta lens is formed from at least two materials of different refractive indices
Implementation Method 3
a polarization filter between the meta lens and the exit surface
Data Source
AI summary
An optoelectronic component includes a semiconductor body having an active region that generates primary electromagnetic radiation and an exit surface; an optical element arranged downstream of the exit surface that deflects and/or converts radiation generated in the component; and a dielectric mirror between the exit surface and the optical element, wherein the dielectric mirror is transmissive to radiation of a predetermined wavelength generated in the component and incident at angles of incidence in a predetermined first angular range, and is reflective to the radiation of the predetermined wavelength incident at angles of incidence in a predetermined second angular range.