Wire Grid Polarizing Element Hybrid Structure
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Solution Overview
Problem
Conventional wire grid polarizing elements face challenges in heat tolerance, heat dissipation, manufacturing cost, and polarization splitting properties for oblique incident light at wide-range incident angles.
Innovation Solution
A wire grid polarizing element with a hybrid structure combining a transparent inorganic substrate and a transparent organic grid structural body, where the grid structural body is formed using nano-imprinting and covered with a functional film that adjusts its coverage rate and shape to maintain high transmissivity and polarization splitting properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a wire grid polarizing element uses a transparent organic grid structural body, then manufacturing cost is reduced and ease of manufacture is improved, but heat tolerance and heat dissipation deteriorate
Solution Approach 1:
The patent applies composite materials by combining transparent organic resin material for the grid structural body with transparent inorganic material for the substrate. The organic material provides ease of manufacture through nano-imprinting, while the inorganic substrate provides heat tolerance and heat dissipation, resolving the contradiction between manufacturing ease and thermal performance.
2Manufacturing precision
If the functional film coverage rate on ridge portions is increased, then polarization splitting properties are improved, but transmissivity for oblique incident light deteriorates
Solution Approach 1:
The patent applies local quality by creating non-uniform functional film coverage on the ridge portions, where the coverage rate varies across different regions of the ridge portions. This localized variation in coverage allows optimization of polarization splitting properties in specific areas while maintaining transmissivity in other areas, resolving the contradiction between polarization precision and light transmission.
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 provides excellent heat dissipation and heat tolerance, reduces manufacturing costs, and maintains high transmissivity and polarization splitting properties for oblique incident light at wide-range incident angles.
Implementation Method 1
a wire grid polarizing element which has favorable polarization properties, avoids deterioration in heat dissipation and cost in manufacturing, and is excellent in transmissivity for oblique incident light and incident light at wide-range incident angles
Implementation Method 2
a functional film made of a metal material and covering part of each of the ridge portions
Implementation Method 3
most of light of an electric field vector component that vibrates in parallel to the conductive wires can be reflected, and most of light of an electric field vector component perpendicular to the conductive wires can be transmitted
Data Source
AI summary
Provided is a wire grid polarizing element excellent in heat dissipation and excellent in transmissivity and polarization splitting properties for oblique incident light at wide-range incident angles. A wire grid polarizing element 1 includes a substrate 10 made of an inorganic material, a grid structural body 20 made of an organic material and including a base part 21 provided on the substrate 10 and a plurality of ridge portions 22, the base part and the ridge portions being integrally formed, and a functional film 30 made of a metal material and covering part of the ridge portion 22. The ridge portion 22 has an upward narrowing shape that narrows in width with distance from the base part 21. The functional film 30 covers and wraps the top of the ridge portion 22, and does not cover a bottom side of the ridge portion 22 and the base part 21. A coverage rate (Rc) of the side surface of the ridge portion 22 obtained by the functional film 30 is more than or equal to 30% and less than or equal to 70%. The organic material is a cured product of a light curing acrylic resin for imprinting containing a photopolymerization component.