Rotating Diffractive Position Capture for High-Speed Optical Deflection
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Solution Overview
Problem
Existing position capturing devices for optical measurement apparatuses are complex and require precise adjustment, making it difficult to capture the deflection of light signal redirection regions with high accuracy and speed.
Innovation Solution
A position capturing device with a mechanically coupled position region that rotates jointly with the light signal redirection region, featuring a diffractive structure to shape light signals based on their incidence, allowing precise and real-time deflection capture independent of rotational speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional position capturing device is used, then the deflection can be captured, but the device complexity increases and adjustment becomes difficult
Solution Approach 1:
The position region is mechanically coupled to the redirection region so that they rotate jointly as a single unit. This merging eliminates the need for separate adjustment mechanisms and reduces device complexity while maintaining deflection capture accuracy through the integrated mechanical connection.
Solution Approach 2:
The position region serves dual functions: it captures deflection information and simultaneously rotates with the redirection region. This multi-functionality reduces the need for additional components and simplifies the overall device structure while maintaining measurement precision.
2Measurement precision
If a conventional position capturing device is used, then the deflection can be captured, but the adjustment complexity increases
Solution Approach 1:
By mechanically coupling the position region to the redirection region, the invention creates an integrated unit that rotates together. This eliminates the need for complex separate adjustments of multiple components, significantly reducing adjustment complexity while preserving deflection capture accuracy.
3Productivity
If the redirection region rotates at high speed, then productivity increases, but the deflection capture becomes dependent on rotational speed
Solution Approach 1:
The mechanical coupling between the position region and redirection region provides real-time feedback about the redirection angle regardless of rotational speed. The position region continuously tracks the redirection region's deflection, enabling accurate measurement even during high-speed rotation without dependency on rotational velocity.
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 precise and fast capture of deflection with reduced adjustment complexity, facilitating improved closed-loop control and long-lasting operation of optical measurement apparatuses.
Implementation Method 1
the at least one position region has at least one diffractive structure, which is designed such that light signals can be shaped to form position light signals depending on their incidence on the at least one position region
Data Source
AI summary
The invention relates to a position capturing device (60) for a light signal redirection device (34, 40) of an optical measurement apparatus (12) for capturing objects (18) in a monitoring region (16), to a light signal redirection device (34, 40), to an optical measurement apparatus (12) and to a method for operating a position capturing device (60). The position capturing device (60) is designed for providing at least one position signal (68) corresponding to a deflection (72) of at least one redirection region (42a, 42b) of the light signal redirection device (34, 40). The at least one redirection region (42a, 42b) is used to redirect at least one light signal (20, 22) and is rotatable at least in a partially circumferential manner with respect to at least one pivot (46) in at least one direction of rotation (48). The position capturing device (60) has at least one position region (62), which is mechanically coupled to the at least one redirection region (42a, 42b) of the light signal redirection device (34, 40) in a manner such that the at least one position region (62) can rotate jointly with the at least one redirection region (42a, 42b). The at least one position region (62) is designed to provide at least one position signal (68) corresponding to a deflection (72) of the at least one redirection region (42a, 42b). The at least one position region (62) has at least one diffractive structure (63), which is designed such that light signals (20) can be shaped to form position light signals (68) depending on their incidence (52, 53) on the at least one position region (62).