Imaging Element Polarizer Resin Filled Wire Grid
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Solution Overview
Problem
Conventional imaging elements with wire grid polarization structures face mechanical strength issues due to gaps between strip-shaped conductors, leading to potential damage during manufacturing and reduced performance.
Innovation Solution
The imaging element incorporates a polarizer that adjusts polarization by changing the pitch, width, height, or refractive index of the strip-shaped conductors, and includes a gap between them, optimizing the polarizer's shape based on the color filter characteristics to enhance mechanical strength and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If air is used as the insulator between strip-shaped conductors to improve transmittance, then the transmittance of the polarizer is increased, but the mechanical strength of the polarizer is decreased due to gaps between conductors
Solution Approach 1:
The patent changes the physical state of the insulator from gaseous (air) to solid (resin material), transforming the medium that fills the gaps between strip-shaped conductors. This parameter change allows the insulator to provide both optical transparency and mechanical support, resolving the contradiction between transmittance and mechanical strength by eliminating gaps while maintaining optical performance.
Solution Approach 2:
The patent uses a composite structure where resin material is combined with the strip-shaped conductors to form an integrated polarizer assembly. The resin material acts as both structural support and electrical insulation, creating a composite material system that simultaneously provides mechanical strength and maintains the necessary optical properties for high transmittance.
2Measurement precision
If the pitch between strip-shaped conductors is reduced to improve polarization performance, then the polarization effectiveness is enhanced, but the mechanical strength further decreases making the polarizer more susceptible to damage
Solution Approach 1:
The resin material serves as an intermediary substance that fills the spaces between strip-shaped conductors with reduced pitch. This intermediary provides mechanical coupling and support, allowing the conductors to be placed closer together for improved polarization effectiveness while the resin prevents structural collapse and maintains integrity during manufacturing and operation.
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 approach effectively reduces the decrease in strength of the polarizer, improving its mechanical robustness and manufacturing yield while maintaining polarization performance.
Implementation Method 1
Incident light is attenuated that has a polarization direction perpendicular to an arrangement direction of the plurality of strip-shaped conductors. This is because free electrons of the strip-shaped conductors vibrate depending on the incident light and cancel the incident light.
Implementation Method 2
a color filter that transmits light having a predetermined wavelength of incident light
Data Source
AI summary
A decrease in strength is reduced of a polarizer of an imaging element in which the polarizer that detects polarization information of a subject is arranged. The imaging element includes a plurality of pixels. The plurality of pixels included in the imaging element each includes a color filter that transmits light having a predetermined wavelength of incident light and a polarizer that performs polarization of the incident light, and generates an image signal based on the incident light transmitted through the color filter and the polarizer. The polarizer included in each of the plurality of pixels adjusts the polarization depending on the color filter in a corresponding one of the pixels of the imaging element.