Laser Scanner Rotating Body Target Element Integration
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Solution Overview
Problem
Current laser scanning devices are complex, costly, and difficult to calibrate efficiently, especially for on-site use, due to their intricate opto-mechanical structures and the need for precise sighting devices and software processing.
Innovation Solution
A laser scanner with a rotatably mounted measuring head and a target element integrated into the rotating body, allowing for easy alignment and calibration using a telescopic sight without the need for additional optics or software, enabling quick on-site calibration and simpler operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a laser scanner uses a complex opto-mechanical structure with separate sighting devices and software processing, then measurement precision can be maintained, but device complexity and cost increase significantly
Solution Approach 1:
The patent combines the sighting function and measurement function into a single integrated optical path. The sighting device shares the same optical components (deflection element, objective lens) with the measurement system, eliminating separate sighting devices and reducing overall system complexity while maintaining measurement precision through the unified optical design.
Solution Approach 2:
The optical components, particularly the deflection element and objective lens, serve dual purposes: they are used both for sighting (alignment) and for actual measurement (triangulation). This multi-functionality reduces the number of components needed and simplifies the device structure while preserving both sighting accuracy and measurement precision.
2Measurement precision
If a laser scanner uses traditional calibration methods with separate sighting devices, then calibration accuracy can be achieved, but calibration time and effort increase
Solution Approach 1:
The integrated optical path is designed during manufacturing to inherently align the sighting and measurement functions. This preliminary alignment eliminates the need for complex field calibration procedures, allowing users to quickly verify and adjust calibration parameters on-site without extensive time investment while maintaining calibration accuracy.
Solution Approach 2:
The system enables users to perform their own calibration using the integrated sighting device without requiring specialized external equipment or complex software processing. The unified optical design allows users to visually align targets and automatically transfer coordinates, making calibration accessible and efficient for end users while preserving accuracy.
3Ease of operation
If a laser scanner integrates a sighting device with the rotating body, then alignment simplicity improves, but the risk of obscuring the optical path with the rotating body increases
Solution Approach 1:
The patent segments the optical path into distinct zones: the sighting optical path is arranged to pass through or alongside the rotating body without being blocked by the deflection element during rotation. The measurement optical path and sighting optical path are spatially separated in certain regions, allowing the rotating deflection element to deflect measurement beams without interfering with the sighting line of sight.
Solution Approach 2:
The sighting device is positioned and oriented in a different spatial dimension relative to the rotating body and measurement optical path. By arranging the sighting optical path to extend in a direction that does not intersect with the rotation trajectory of the deflection element, the patent eliminates obstruction while maintaining alignment simplicity through the integrated design.
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 simplifies the device's structure and operation, allowing for robust, cost-effective, and flexible on-site calibration, reducing the time and effort required for targeting and measurement, while enabling precise 2-layer measurements and calibration of the device's parameters.
Implementation Method 1
a radiation source (6) for generating a transmitted light beam (13) and a receiving sensor (8) for detecting captured and preferably reflected reflection radiation (17) on a target object
Data Source
Figure 1
Figure 2~3
Figure 4a~4b
AI summary
The invention relates to a surveying device (1), in particular a laser scanner for optically scanning and measuring an environment. The surveying device (1) has a rotatably mounted measuring head (2) and a rotating unit (10) mounted therein with a rotatably mounted rotating body (20), wherein a targeting element (70) for aiming at a target point is integrated into the rotating body (20), the targeting element comprising an opening (70') passing through the rotating body (20).