Radiation Imaging Pixel Sets With Equalized Aperture Centers
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Solution Overview
Problem
Radiation imaging apparatuses with pixel arrangements that cause complex moire patterns due to uneven pixel aperture center distances, leading to degraded image quality and difficulty in image processing.
Innovation Solution
A radiation imaging apparatus with adjacently arranged pixel sets having pixels with different aperture shapes and equalized gravity center distances, simplifying moire patterns and enhancing image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pixels are arranged with different aperture shapes in alternating pattern, then signal line cost is reduced, but complex moire patterns occur degrading image quality
Solution Approach 1:
The patent applies asymmetry by using pixels with different aperture shapes (first aperture shape and second aperture shape) in alternating pattern to reduce signal line cost. However, it resolves the resulting moire issue by carefully controlling the gravity center positions to maintain uniform spacing, thus balancing cost reduction with image quality preservation.
Solution Approach 2:
The patent changes the aperture shape parameter of pixels while maintaining the gravity center distance parameter constant. By keeping the distance between gravity centers uniform even with different aperture shapes, the patent eliminates complex moire patterns while still achieving signal line cost reduction through the alternating aperture shape arrangement.
2Ease of manufacture
If pixels with different aperture shapes are alternately arranged, then IC chip cost is reduced, but moire complexity increases making image processing difficult
Solution Approach 1:
The patent uses alternating aperture shapes (first and second aperture shapes) to reduce IC chip cost by enabling signal line sharing. The asymmetry in aperture shapes is compensated by ensuring uniform gravity center spacing, which prevents complex moire patterns from forming, thus reducing moire complexity rather than increasing it.
Solution Approach 2:
The patent changes the aperture shape parameter while maintaining the gravity center distance parameter constant. This parameter control strategy reduces IC chip cost through alternating aperture shapes while simultaneously simplifying moire patterns by ensuring uniform gravity center spacing, making image processing easier.
3Manufacturing precision
If uniform gravity center spacing is maintained with different aperture shapes, then moire patterns are simplified, but pixel structure complexity increases
Solution Approach 1:
The patent introduces asymmetry through different aperture shapes (first and second aperture shapes) to simplify moire patterns by maintaining uniform gravity center spacing. While this does increase pixel structure complexity, it resolves the moire issue more effectively than using identical aperture shapes, thus improving image quality at the cost of increased structural complexity.
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
Simplifies moire patterns, making image processing easier and improving image quality by ensuring uniform pixel aperture center distances.
Implementation Method 1
a photoelectric conversion element configured to convert light into an electric charge
Data Source
AI summary
A radiation imaging apparatus includes a first pixel set and a second pixel set that are adjacently arranged in a predetermined direction, and each of the first pixel set and the second pixel set includes two or more of pixels which are adjacently arranged in the predetermined direction and in which photoelectric conversion elements have aperture portions having different shapes. In the pixels included in the first pixel set and the second pixel set, distances between gravity centers or centers of the aperture portions of the adjacent pixels are substantially the same.