Image Sensor Collection Array for Close-Target Collimation
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Solution Overview
Problem
Existing optical sensor systems face challenges in achieving optimal collimation of light when the sensor is positioned close to the measurement target, particularly in applications with limited spacing between the sensor and the target.
Innovation Solution
The use of an array-based collection component, such as an array of compound parabolic concentrators (CPCs), micro-tapers, or light pipes, to collect and collimate light reflected from a diffuse reflective medium, reducing the focal angle and minimizing the spacing between the sensor and the measurement target.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the sensor is positioned close to the measurement target, then the device size is reduced, but the collimation of light becomes suboptimal
Solution Approach 1:
The collection component is divided into an array of multiple individual optical elements (such as multiple CPCs, micro-tapers, or light pipes) arranged in parallel. This segmentation allows each element to independently collect and collimate light from the measurement target, maintaining effective collimation even when the sensor is positioned close to the target, thus resolving the contradiction between small device size and good collimation quality.
Solution Approach 2:
The invention transitions from a single-element collection component to a multi-element array structure, adding the dimension of parallel arrangement. This dimensional change enables the system to achieve both compact size (through vertical stacking) and effective collimation (through horizontal array distribution), solving the contradiction between device size and collimation quality.
2Measurement precision
If a single large collection component is used, then collimation is improved, but the device size increases
Solution Approach 1:
Instead of using one large collection component, the system segments the collection function across multiple smaller optical elements arranged in an array. Each small element (CPC, micro-taper, or light pipe) provides individual collimation, and their combined effect achieves the desired collimation quality while keeping each component compact, thus resolving the contradiction between collimation quality and device size.
Solution Approach 2:
Multiple individual optical collection elements are merged into a single array structure that functions as one integrated collection system. The array of small elements works together to provide the combined collimation effect of a single large component, but with reduced individual element sizes, solving the contradiction between collimation quality and device size.
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 enables a compact optical sensor system that can operate effectively in close proximity to the measurement target, improving collimation properties and reducing the overall size of the sensor system.
Implementation Method 1
a compound parabolic concentrator (CPC) proximate to the light source and configured to concentrate light from the light source with respect to a measurement target
Implementation Method 2
an optical sensor... configured to receive light reflected or transmitted from the measurement target
Data Source
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AI summary
An optical sensor system (100) includes a light source (110) and a concentrator component (120) proximate to the light source (110) and configured to concentrate light from the light source (110) with respect to a measurement target (160). The optical sensor system (100) includes a collection component (130) that includes an array of at least two components configured to receive light reflected or transmitted from the measurement target (160). The optical sensor system (100) includes a sensor (150) and a filter (140) provided between the collection component (130) and the sensor (150).