Rod-Crank Shaping Assembly for Stage Light Beam Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shaping assemblies for stage light fixtures are too cumbersome and have limited maneuvering freedom due to component packing, restricting the ability to form complex light beam shapes like variable area triangles and concentric triangles.
Innovation Solution
A compact shaping assembly with a support frame, screen elements, and actuators arranged along distinct planes, utilizing a rod-crank mechanism and electric motors for independent movement, allowing for maximum maneuvering freedom and reduced volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If shaping assemblies use compact component packing to minimize overall volume, then the volume of the light fixture is reduced, but the maneuvering freedom of screen elements is strongly limited
Solution Approach 1:
The patent implements nesting by placing the mobile plate inside the fixed plate, with screen elements arranged on different sides of the mobile plate. This nested configuration allows multiple screen elements to occupy overlapping spatial zones, significantly reducing the overall axial volume of the shaping assembly while preserving the maneuvering freedom of each screen element through independent actuation mechanisms.
Solution Approach 2:
The patent transitions from a two-dimensional arrangement of screen elements to a three-dimensional configuration by positioning screen elements on different sides of the mobile plate (first side and second side). This dimensional change enables screen elements to move along distinct planes, maintaining maneuvering freedom while compacting the overall assembly volume through spatial optimization.
2Volume of moving object
If shaping assemblies use compact component packing to minimize overall volume, then the volume of the light fixture is reduced, but the ability to form complex light beam shapes is restricted
Solution Approach 1:
The nested configuration of the mobile plate within the fixed plate, combined with screen elements positioned on opposite sides, creates a compact volume while maintaining the degrees of freedom necessary for forming complex light beam shapes including variable area triangles and concentric triangles.
Solution Approach 2:
By arranging screen elements on different sides of the mobile plate and enabling movement along distinct planes, the patent achieves three-dimensional control of the light beam shaping process, allowing formation of complex shapes while minimizing the axial volume of the assembly.
3Adaptability or versatility
If shaping assemblies arrange screen elements on distinct planes with independent actuators, then maneuvering freedom is maximized, but the device complexity increases
Solution Approach 1:
The patent merges the actuator mechanisms by positioning actuators on the mobile plate that can independently control screen elements on both the first and second sides. This combining of actuation functions on a single moving component reduces the overall device complexity compared to having separate actuators for each screen element, while still maintaining maximum maneuvering freedom through independent control capabilities.
Data Source
AI summary
A shaping assembly for shaping a light beam extending along an optical axis is equipped with:a support frame extending about a longitudinal axis;a plurality of screen elements supported by the support frame and arranged transversally with respect to the axis;a plurality of pairs of actuators, each of which is coupled with a respective screen element; each actuator comprising at least a moving device and transmission means, which are configured to transmit the movement of the moving device to the respective screen element and comprise at least one rod-crank type mechanism.