Chromatic Aberration Detector for Extended-Range Distance Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing confocal chromatic sensors face limitations in measurement range and reliability, particularly in fully automated processes, with challenges in determining the measurement range and requiring high technical resources and costs.
Innovation Solution
A detector system utilizing chromatic aberration and aperture elements to separate focused and unfocused light components, combined with confocal chromatic sensors and DPR technology, allows for accurate distance determination over a broader range by evaluating the intensity ratios of central and edge components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If confocal chromatic sensors are used for high accuracy distance measurement, then measurement precision is improved, but measurement range is limited
Solution Approach 1:
The light beam is segmented into central components and edge components by the aperture element. Central components pass through to provide confocal chromatic measurement, while edge components are blocked to extend the effective measurement range. This segmentation allows the system to operate in different measurement modes within a single device.
Solution Approach 2:
Different regions of the light beam are assigned different functions: central components are used for high-precision confocal measurement, while edge components are utilized for extended range detection. The aperture element creates local quality differences by selectively transmitting or blocking specific beam regions based on their spatial position.
2Measurement precision
If confocal chromatic sensors are used for accurate distance determination, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system merges confocal chromatic sensing with extended range detection capabilities into a single integrated device. The aperture element is combined with the confocal sensor, allowing both high-precision measurement and extended range functionality without requiring separate systems.
Solution Approach 2:
The detector is designed to perform multiple functions: high-precision confocal chromatic measurement within the standard measurement range, and extended range detection beyond the conventional limits. This multi-functionality reduces the need for multiple specialized devices.
3Measurement precision
If confocal chromatic sensors operate at minimum measurement distance, then measurement precision is improved, but standoff distance increases
Solution Approach 1:
The system dynamically adapts its measurement mode based on the object distance. Within the standard measurement range, it operates in confocal mode for high precision. Beyond this range, it automatically transitions to extended range detection mode, providing continuous accurate measurement across varying distances without manual intervention.
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 reliable and accurate distance measurement beyond the conventional measurement range of confocal chromatic sensors, with reduced technical effort and resource requirements, facilitating automated processes.
Implementation Method 1
The detector comprises: at least one transfer device with chromatic aberration
Implementation Method 2
at least one aperture element, wherein the aperture element is configured to block edge components of a light beam propagating from the object to the detector and having passed the transfer device, wherein the aperture element is configured to let pass central components of said light beam
Implementation Method 3
at least one first optical sensor positioned in a direction of propagation of said light beam behind the aperture element, wherein the first optical sensor is configured for determining a color information of said central components and at least one first intensity information of said central components
Data Source
Figure 1
Figure 2
AI summary
A detector (110) for determining a position of at least one object (112) is disclosed. The detector (110) comprises: - at least one transfer device (114) with chromatic aberration; - at least one aperture element (118), wherein the aperture element (118) is configured to block edge components of a light beam (120) propagating from the object (112) to the detector (110) and having passed the transfer device (114), wherein the aperture element (118) is configured to let pass central components (119) of said light beam (120); - at least one first optical sensor (126) positioned in a direction of propagation of said light beam (120) behind the aperture element (118), wherein the first optical sensor (126) is configured for determining a color information of the central components (119) of said light beam (120) and wherein the first optical sensor (126) is configured for determining at least one first intensity information of the central components of said light beam (120); - at least one second optical sensor (128), wherein the second optical sensor (128) is configured to determine at least one second intensity information of the edge components of said light beam (120).