Optoelectronic Sensor Aperture Segmentation via Opaque Coating
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Solution Overview
Problem
Existing optoelectronic sensors face challenges in customizing the size, shape, and position of optically effective surfaces to meet specific application requirements, which can impair detection accuracy and precision, especially in applications involving large beam cross-sections and near/far-range object differentiation.
Innovation Solution
Applying a partially opaque layer to the optically active surface of optoelectronic components to form screens or apertures, allowing for precise adjustment of the optically effective surface dimensions and positioning, using techniques like printing or photolithography to create defined diaphragm structures with high spatial resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the optically effective surface has fixed dimensions, then manufacturing is simple, but adaptability to different applications is poor
Solution Approach 1:
The patent segments the optically effective surface by applying opaque layers to specific partial areas, creating multiple apertures with different sizes, shapes, and positions. This segmentation allows different regions of the surface to serve different optical functions, enabling adaptation to various application requirements without redesigning the entire component.
Solution Approach 2:
The patent implements local quality by making different portions of the optically effective surface have different properties through selective application of opaque layers. Each local area can be optimized for specific optical requirements (e.g., different aperture sizes for near-field vs. far-field detection), allowing the single component to meet diverse application needs.
2Measurement precision
If the optically effective surface is large, then light collection is improved, but detection precision for small objects deteriorates
Solution Approach 1:
The patent divides the large optically effective surface into multiple smaller apertures by applying opaque layers to specific regions. This segmentation creates multiple focused detection zones that can individually resolve small objects while the combined surface area maintains good light collection capability.
Solution Approach 2:
The patent applies local quality by creating specific aperture patterns in different regions of the optically effective surface. Each aperture is optimized for precise detection of small objects in its local area, while the overall arrangement maintains sufficient light gathering power.
3Manufacturing precision
If apertures are formed by mechanical means, then positioning is achievable, but manufacturing precision and spatial resolution are insufficient
Solution Approach 1:
The patent replaces mechanical aperture formation methods with a deposition-based approach using opaque layers applied through printing or photolithography techniques. This substitution enables much higher positioning precision and spatial resolution since these deposition methods can accurately define aperture boundaries at the micro-scale, eliminating the positioning errors inherent in mechanical methods.
4Measurement precision
If custom optically effective surfaces are created for each application, then detection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent creates a universal optoelectronic component with a multi-functional optically effective surface that can be adapted to different applications through selective application of opaque layers. A single base component can serve multiple detection requirements (different aperture sizes, shapes, and positions) by modifying which areas receive the opaque coating, eliminating the need to manufacture separate custom components for each application.
Solution Approach 2:
The patent incorporates the opaque layer application as a preliminary or intermediate manufacturing step that defines the final aperture pattern. By integrating this coating step into the standard manufacturing process flow, the customization of optically effective surfaces becomes a routine operation rather than a costly post-processing modification.
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
Enables adaptable optically effective surfaces that enhance detection precision, reduce disruptive reflections, and eliminate the need for expensive components, allowing for precise positioning and accurate beam control in various sensor applications.
Implementation Method 1
at least one aperture is formed by applying an at least partially opaque layer to partial areas of the optically effective surface
Data Source
Figure 1
AI summary
In a method for manufacturing an assembly for an optoelectronic sensor, a component carrier is equipped with at least one optoelectronic component that has an optically active surface. At least one aperture is formed by applying a layer that is at least partially opaque to portions of the optically active surface of the optoelectronic component.