Laser Beam Horizontal Trueness Calibration Device
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Solution Overview
Problem
Existing laser beam horizontal trueness testing devices are prone to precision diminishment due to external influences like temperature fluctuations and mechanical shocks, requiring frequent recalibration, which is costly and complex, especially when using total stations, and conventional lasers are not suitable for this task.
Innovation Solution
A calibration device and method using a laser housing with a longitudinal axis and support body, allowing stable insertion in multiple positions, combined with a position sensitive detector, to determine calibration parameters and ensure the laser beam's true horizontality, canceling out uncertainties and errors through precise measurement in various rotational positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a total station is used to recalibrate the testing device, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent creates a simplified copy of the testing device itself as a calibration source. The calibration device replicates the essential functionality (laser emission and detection) in a simplified form, eliminating the need for complex external equipment like total stations while maintaining sufficient calibration precision.
Solution Approach 2:
The testing device calibrates itself using an integrated calibration device that is part of the same system. This self-service approach eliminates the need for external complex equipment and specialized operators, reducing both device complexity and operational requirements while maintaining calibration accuracy.
2Ease of manufacture
If conventional lasers are used for calibration, then cost is reduced, but measurement precision deteriorates due to errors from ball bearings in rotational lasers
Solution Approach 1:
The patent extracts and eliminates the problematic rotational mechanism with ball bearings from the calibration process. By using a static laser source with electronically controlled beam direction or a simplified mechanical system without precision ball bearings, the invention removes the source of errors while maintaining cost-effectiveness.
Solution Approach 2:
The patent replaces the mechanical rotational laser system (with ball bearings) with an alternative approach that may use electronic beam steering or a fixed laser with multiple emission positions, substituting the problematic mechanical system with a more reliable solution that maintains precision without the cost and complexity of high-precision ball bearings.
3Reliability
If the testing device is transported or subjected to external influences, then reliability deteriorates due to precision diminishment, but frequent recalibration increases loss of time and cost
Solution Approach 1:
The patent performs preliminary calibration actions by integrating a calibration device that can quickly re-calibrate the system after transport or environmental changes. This preliminary correction capability reduces the need for extensive recalibration procedures and minimizes downtime while maintaining measurement reliability.
Solution Approach 2:
The integrated calibration device enables the system to perform self-calibration after being subjected to external influences, reducing the need for external intervention and extensive recalibration procedures. This self-service capability maintains reliability while minimizing time loss.
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
The solution provides a simple, cost-effective, and precise method for recalibrating laser beam horizontal trueness testing devices, eliminating the need for sophisticated equipment like total stations, and ensuring accurate horizontal trueness without requiring specialized handling or complex setups.
Implementation Method 1
a position sensitive detector for detecting an impinging position of a laser beam in dependency of the entry angle of the laser beam with regard to the horizontal
Implementation Method 2
an inherent inclination compensator
Data Source
Figure 1a~1b
Figure 1c~2
Figure 3~4
AI summary
Calibration device (1) and calibration method for calibration of a laser beam horizontal trueness testing device (50) whereby the calibration device (1) comprises an elongated support body (4) for support of an elongated laser housing (3) with a longitudinal axis (A) and a laser source (2), whereby a laser beam (2) is emittable in direction of the longitudinal axis (A). According to the calibration method, calibration parameters are determined based on at least three impinging positions (P1, P2, P3) of the laser beam (L) of the laser housing (3) for at least two different rotational positions of the laser housing (3) in a first face (F1) and at least one position of the laser housing (3) in a second opposing face (F2).