Magneto-Optical Imaging Units for Low-Loss Refractive Accuracy
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Solution Overview
Problem
Current optical elements, particularly those using micro-channel matrix optical waveguides made of orthogonal transparent materials, suffer from insufficient resolution and clarity, limiting their application in high-tech fields and user experience.
Innovation Solution
An optical imaging element with magnetic reflective layer imaging units is developed, featuring a binary or ternary magneto-optical photonic crystal structure formed by stacking upper and lower light-transmitting laminates with sandwich laminated metal magnetic thin layers, utilizing a central magnetic layer to enhance non-reciprocal effects and reduce light loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If micro-channel matrix optical waveguides made of orthogonal transparent materials are used, then the optical element can be manufactured with current technology, but the resolution and clarity of aerial imaging are insufficient
Solution Approach 1:
The patent employs composite materials by combining transparent materials with magnetic reflective layers to form a magneto-optical photonic crystal structure. This composite approach enables superior imaging resolution and clarity while remaining manufacturable through established magnetron sputtering techniques. The magnetic layers (Fe3O4 or NdFeB) integrated within the transparent laminate structure create the necessary photonic band gap properties without requiring entirely new manufacturing processes.
Solution Approach 2:
The patent utilizes parameter changes by controlling the thickness of magnetic layers (0.05-0.2 μm for Fe3O4, 0.05-0.2 mm for NdFeB) and adjusting the dielectric constant of the central magnetic layer. These parameter optimizations enable the formation of photonic band gaps that enhance imaging resolution while maintaining compatibility with existing manufacturing capabilities through precise thickness control during magnetron sputtering.
2Loss of energy
If a magneto-optical isolator function is realized using a non-reciprocal phase shift region, then light loss is reduced and imaging accuracy is improved, but the thickness of the non-reciprocal phase shift region must be minimized
Solution Approach 1:
The patent applies local quality by concentrating the magneto-optical functionality in localized thin magnetic layers (0.05-0.2 μm thickness) within the photonic crystal structure. The central magnetic layer with large dielectric constant creates strong local non-reciprocal effects that achieve the isolator function in a minimal thickness region, reducing overall light loss while maintaining compact device dimensions.
Solution Approach 2:
The patent achieves reduced light loss in thin regions by optimizing the dielectric constant parameter of the central magnetic layer. By selecting materials with appropriate dielectric constants and controlling layer thickness precisely, the non-reciprocal phase shift is maximized within the minimal 0.05-0.2 μm thickness range, enabling effective light isolation without requiring large thickness.
3Object-generated harmful factors
If a photonic band gap is realized by using a central magnetic layer with a large dielectric constant, then spontaneous emission is suppressed, but the manufacturing precision of the magnetic layer thickness must be controlled
Solution Approach 1:
The patent utilizes parameter changes by optimizing the dielectric constant of the central magnetic layer material and controlling its thickness within the 0.05-0.2 μm range. This parameter optimization creates a photonic band gap that effectively suppresses spontaneous emission. The specific thickness range is determined through theoretical calculations and experimental validation to achieve the desired band gap properties.
Solution Approach 2:
The patent employs feedback mechanisms through magnetron sputtering process control to achieve precise magnetic layer thickness. The magnetron sputtering technique allows real-time monitoring and adjustment of deposition parameters, enabling consistent thickness control within the narrow 0.05-0.2 μm range required for photonic band gap formation and spontaneous emission suppression.
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 improves refractive index control, reduces light loss, and enhances imaging accuracy by separating transmission peaks, effectively managing light propagation and reducing scattering, thereby improving optical system performance.
Implementation Method 1
realizing a photonic band gap by using a central magnetic layer with a large dielectric constant of the reflective layer, and suppressing the spontaneous emission of molecules or atoms with optical frequency falling in the band gap
Implementation Method 2
a binary magneto-optical photonic crystal with a modular structure can be formed, or a ternary magneto-optical photonic crystal structure can be formed
Implementation Method 3
The sandwich laminated metal magnetic thin layer is bonded to the light-transmitting strip by magnetron sputtering
Implementation Method 4
The upper light-transmitting laminate and the lower light-transmitting laminate are cured and adhered by a transparent optical adhesive
Data Source
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AI summary
An optical imaging element and a preparation method are provided. The optical imaging element includes a plurality of superimposed optical imaging units. The optical imaging unit includes an upper light-transmitting laminate and a lower light-transmitting laminate. Both the upper light-transmitting laminate and the lower light-transmitting laminate are composed of a plurality of light-transmitting strips with reflective layers in parallel. The direction of a first light-transmitting strip in the upper light-transmitting laminate is vertically intersected with the direction of a second light-transmitting strip in the lower light-transmitting laminate. The reflective layer is a sandwich laminated metal magnetic thin layer, including a first metal aluminum layer, a central magnetic layer, and a second metal aluminum layer. A binary magneto-optical photonic crystal with a modular structure, or a ternary magneto-optical photonic crystal structure can be formed, thereby realizing the non-reciprocal phase shift region, reducing the light loss, and improving the refraction imaging accuracy.