Multispectral Sensor Corner Region Optimization
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Solution Overview
Problem
Existing multispectral sensors in electronic devices suffer from low signal-to-noise ratio and sensitivity, particularly due to low illuminance in corner regions, which affects spectral detection performance.
Innovation Solution
The multispectral sensor design includes a sensor array with a middle sensor group and edge sensor groups, where the first and second photoelectric sensors are arranged in a mutually misaligned manner. This configuration ensures that the second photoelectric sensors are not separately arranged in corner regions, thereby improving detection sensitivity and light energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If photoelectric sensors are arranged in a complete matrix including corner regions, then the field of view and light-receiving regions are maximized, but the signal-to-noise ratio and sensitivity decrease due to low illuminance in corner regions
Solution Approach 1:
The patent removes photoelectric sensors from corner regions where illuminance is insufficient, extracting the problematic elements that degrade signal-to-noise ratio while preserving the majority of the light-receiving area through the remaining sensor arrangement
Solution Approach 2:
The patent applies different sensor arrangement strategies to different regions: complete coverage in central regions with sufficient illuminance, and selective omission in corner regions with insufficient illuminance, optimizing each region according to its local lighting conditions
2Area of stationary object
If photoelectric sensors are arranged in a complete matrix including corner regions, then the quantity of light-receiving regions is maximized, but the light energy utilization decreases due to poor detection performance in corner regions
Solution Approach 1:
The patent extracts photoelectric sensors from corner regions where light energy is insufficient for effective detection, eliminating the waste of light energy in regions that cannot provide useful detection signals
Solution Approach 2:
The patent changes the spatial distribution parameter of photoelectric sensors by creating a non-uniform arrangement with higher density in central regions and lower density in corner regions, optimizing light energy utilization across different illuminance conditions
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 design enhances the signal-to-noise ratio and sensitivity of the multispectral sensor, allowing for better spectral detection and improved image quality under various lighting conditions.
Implementation Method 1
The optical lens is configured to change a transmission path of light to be incident on the filter part
Implementation Method 2
The filter part is configured to allow light in a specific wavelength range to pass through and reach the sensor array
Implementation Method 3
The sensor array includes at least three rows of photoelectric sensors
Data Source
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AI summary
Embodiments of this application provide a multispectral sensor and an electronic device. The multispectral sensor includes a light channel. The light channel includes a light entrance part, an optical lens, a filter part, and a sensor array. Orthographic projection of the sensor array is located in orthographic projection of the optical lens in an axial direction of the light entrance part. The sensor array includes at least three rows of photoelectric sensors. The at least three rows of photoelectric sensors are divided into a middle sensor group and an edge sensor group. The middle sensor group includes a first photoelectric sensor. The edge sensor group includes a second photoelectric sensor. In a row direction of the sensor array, a row of first photoelectric sensors includes N first photoelectric sensors and N-1 first gaps. The first gap is formed between two adjacent first photoelectric sensors. A quantity of second photoelectric sensors in a row adjacent to the row of first photoelectric sensors is N-1. The second photoelectric sensor is arranged corresponding to the first gap in the column direction.