Goniometer Single-Axis Rotation for Photometric Measurement
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Solution Overview
Problem
Current gonioradiometers require multiple types to measure different plane systems (A, B, C) with varying degrees of freedom, leading to increased tolerances and complexity in measurement processes.
Innovation Solution
A six-axis swivel arm robot is used, pivoting around only one axis to minimize tolerances and simplify programming, allowing for efficient measurement in standardized plane systems by varying radiation angles within a plane or planes, enabling precise recording of photometric or radiometric parameters with low tolerances and short measurement times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of gonioradiometers are used to measure different plane systems, then measurement versatility is improved, but device complexity and tolerance accumulation increase
Solution Approach 1:
The patent applies universality by designing a single gonioradiometer system that can measure multiple plane systems (A-planes, B-planes, C-planes) through software configuration rather than requiring separate physical devices. The control unit is programmed to interpret measurement data according to different plane system standards, allowing one device to perform functions previously requiring multiple specialized instruments.
Solution Approach 2:
The patent utilizes parameter changes by modifying the measurement interpretation parameters rather than physical device parameters. By changing the software parameters that define how measurement angles and positions are mapped to different plane systems, the same physical measurement setup can accommodate multiple measurement standards without hardware modifications.
2Adaptability or versatility
If the robot moves around several axes during measurement, then measurement coverage is improved, but tolerance accumulation increases
Solution Approach 1:
The patent extracts the essential measurement function from complex multi-axis robot movements and concentrates it on a single rotating axis. By taking out only the necessary rotational movement around the light source and eliminating other translational and rotational axes from the measurement process, the system achieves full measurement coverage with minimal tolerance accumulation from a single axis.
Solution Approach 2:
The patent inverts the conventional approach by keeping the light source stationary at the center and rotating around it, rather than moving the sensor through complex multi-axis trajectories. This inversion simplifies the measurement geometry to a single rotational axis while maintaining complete angular coverage through 360-degree rotation.
3Measurement precision
If multiple gonioradiometers are maintained for different measurement tasks, then measurement accuracy for specific tasks is improved, but loss of time for setup and configuration increases
Solution Approach 1:
The patent applies dynamics by making the measurement system software-configurable rather than statically dedicated to a single plane system. The control unit can dynamically switch between different plane system measurement modes (A, B, or C planes) through programming, allowing the same physical device to adapt its measurement interpretation to match the required accuracy standards for different measurement tasks without physical reconfiguration.
Data Source
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AI summary
The invention relates to a method and a gonioradiometer for the direction-dependent measurement of at least one lighting or radiometric characteristic quantity of an optical radiation source (S). In addition, the direction of radiation of the lighting or radiometric characteristic quantity is described using a plane system (A, B, C), the planes of which intersect in a line of intersection passing through the radiation concentration point of the radiation source, and described using a radiation angle (α, β, γ) that provides the radiation direction (α, β, γ) within an observed plane. During the measuring process, a sensor (SR) or the radiation source (S) is moved in such a way that the sensor (SR) records measured values that provide the lighting or radiometric characteristic quantities over a spherical surface area about the radiation concentration point (LS) of the radiation source (S). The sensor (SR) or the radiation source (S) is attached to a multi-axis swivel-arm robot which is swivelled about exactly only one of its axes (A1, A6) during a measuring process, wherein measured values are acquired relating to different radiation angles (α, β, γ) within an observed plane of the plane system (A, B, C), or relating to different planes for an observed radiation angle (α, β, γ).