Optical Sensor Multi-Layer Filter Spectral Subdivision
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Solution Overview
Problem
Existing optical sensors lack the capability to enhance spectral characteristics by subdividing wavelength bands effectively, which limits their detection precision.
Innovation Solution
An optical sensor configuration that includes a plurality of optical receivers, color filters, and a multi-layer filter. The multi-layer filter has specific transmission and light shielding wavelength regions, allowing transmission of portions of visible light bands and infrared bands, enabling the subdivision of wavelength bands detected by the sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional color filter is used to detect visible light, then the optical sensor can detect the visible light band, but the spectral characteristics cannot be enhanced by subdividing the wavelength band
Solution Approach 1:
The visible light band detection is segmented into multiple wavelength regions using a multi-layer filter structure. The filter includes a first layer with a first wavelength transmission region and a second layer with a second wavelength transmission region, allowing the sensor to detect different portions of the visible spectrum separately. This segmentation enables enhanced spectral characteristics while maintaining a manageable device structure.
Solution Approach 2:
The patent adds a dimensional aspect to the filter structure by stacking multiple filter layers with different wavelength transmission characteristics. Instead of using a single complex filter, the solution employs multiple layers that collectively provide fine-grained spectral subdivision, transforming a one-dimensional wavelength detection into a multi-layered detection system.
2Measurement precision
If the wavelength band is subdivided to enhance spectral characteristics, then detection precision is improved, but the filter structure becomes more complex
Solution Approach 1:
The detection precision is improved by segmenting the visible light spectrum into multiple discrete wavelength transmission regions. Each layer of the multi-layer filter is responsible for transmitting a specific wavelength portion, allowing the optical sensor to detect different spectral bands with high precision. This segmentation approach achieves fine-grained spectral resolution without requiring an overly complex single-layer filter design.
Solution Approach 2:
The patent employs a composite filter structure consisting of multiple layers with different optical properties. Each layer is designed with specific wavelength transmission characteristics, and their combination creates a composite filtering system that achieves superior spectral resolution. This composite approach allows the system to attain high detection precision while distributing the complexity across multiple simpler layers rather than one complex layer.
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 spectral characteristics by allowing precise detection of subdivided wavelength bands, improving detection precision and accuracy.
Implementation Method 1
The multi-layer filter includes: a first transmission wavelength region, allowing transmission of a portion of light of the first visible light band; and a second transmission wavelength region, allowing transmission of a portion of light of the second visible light band or a portion of light of an infrared band
Data Source
AI summary
The subject of the present disclosure is to enhance spectral characteristics.The present disclosure relates to an optical sensor and an electronic apparatus. The optical sensor includes: multiple optical receivers, multiple color filters covering light receiving surfaces of the multiple optical receivers, and a multi-layer filter layered on the multiple color filters. The multiple color filters include a red color filter, a green color filter and a blue color filter. The multi-layer filter includes a first transmission wavelength region allowing transmission of a portion of the transmission wavelength regions of the green color filter and the blue color filter, and a second transmission wavelength region allowing transmission of a portion of the transmission wavelength region of the red color filter.