CMY Pixel Array with Spectroscopic Dispersion for Color Imaging
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Solution Overview
Problem
Current imaging elements face challenges in increasing light reception efficiency and color reproducibility.
Innovation Solution
The imaging element incorporates a pixel array with cyan, magenta, and yellow pixels, each equipped with a spectroscopic element that disperses specific wavelength bands of light to adjacent pixels, allowing for efficient light utilization and improved color representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pixel array with color filters is used, then the structure is simple, but light reception efficiency and color reproducibility are insufficient
Solution Approach 1:
The pixel array is segmented into three distinct pixel types (cyan, magenta, yellow) with each type having a photoelectric converter optimized for a specific wavelength range. This segmentation allows each pixel to specialize in detecting particular colors, improving color reproducibility while maintaining a relatively simple overall structure compared to more complex spectral imaging systems.
Solution Approach 2:
Each pixel type is equipped with a spectroscopic element that has specific optical characteristics tailored to its function. The cyan pixels have spectroscopic elements optimized for blue-green light, magenta pixels for red-blue light, and yellow pixels for red-green light. This local optimization of optical properties enhances color accuracy without requiring complex global system changes.
2Reliability
If light is directly incident on photoelectric converters without dispersion, then the structure is simple, but light reception efficiency is insufficient due to color mixture
Solution Approach 1:
A spectroscopic element is introduced as an intermediary component between the incident light and the photoelectric converter. This spectroscopic element disperses the incident light into different wavelength components, allowing the photoelectric converter to receive separated color information. This intermediary structure improves light reception efficiency by preventing color mixture while adding only moderate structural complexity.
3Measurement precision
If all wavelengths are received by each pixel, then the structure is simple, but color reproducibility deteriorates due to color mixture
Solution Approach 1:
The detection function is segmented across three pixel types, each responsible for specific wavelength ranges. Cyan pixels detect blue-green light, magenta pixels detect red-blue light, and yellow pixels detect red-green light. This segmentation of the detection function improves color detection accuracy by eliminating color mixture at each pixel, while the overall system remains relatively simple compared to full spectral imaging systems.
Solution Approach 2:
Each pixel type serves multiple functions: it acts as both a light receiver for its specific wavelength range and as part of the overall color reconstruction system. The spectroscopic elements provide multi-functionality by simultaneously dispersing light and directing specific wavelengths to appropriate pixel types, improving color accuracy without requiring separate dispersion and detection systems.
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 configuration enhances light reception efficiency and color reproducibility by ensuring that each pixel receives only the intended wavelengths, reducing color mixture and increasing the accuracy of color representation in captured images.
Implementation Method 1
a spectroscopic element that is arranged on a light incident side of the photoelectric converter and disperses light in a predetermined wavelength range
Implementation Method 2
The imaging element executes photoelectric conversion on the basis of received light to thereby output a pixel signal
Data Source
AI summary
Provided is an imaging element according to the present technology including a pixel array that includes pixels that are arranged two-dimensionally and each of which has a photoelectric converter and a spectroscopic element that is arranged on a light incident side of the photoelectric converter and disperses light in a predetermined wavelength range, in which the pixels include cyan pixels that receive cyan light, magenta pixels that receive magenta light, and yellow pixels that receive yellow light.