Three-Axis Motorized Yoke for Precise Video Projector Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional cinema or video projectors using LEDs or laser diodes are heavy, bulky, and noisy, with complex control systems, limiting their maneuverability and usability due to weight and volume constraints.
Innovation Solution
A motorized lyre with a three-axis motorized rotation system, featuring geared motors and individual control cards with microprocessors, allowing precise and balanced movement control for video projectors, including portrait and landscape image positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional video projectors with LEDs or laser diodes are used, then the light source efficiency is improved, but the weight and volume of the projector increase significantly
Solution Approach 1:
The patent separates the video projector from the motorized lyre assembly, allowing the projector to be a lighter, standalone unit while the lyre provides the necessary support and positioning capabilities. This segmentation resolves the contradiction by enabling efficient LED/laser projectors to be used without requiring them to support their own heavy mounting structure.
Solution Approach 2:
The patent introduces a three-axis motorized rotation system that adds dimensional capabilities for positioning the projector. This multi-axis approach allows precise control of projector orientation and positioning, enabling the use of lighter projectors that can be positioned anywhere within the three-dimensional space defined by the lyre's rotation axes.
2Use of energy by moving object
If traditional video projectors with LEDs or laser diodes are used, then the light source efficiency is improved, but the volume of the projector increases
Solution Approach 1:
By separating the projector from the lyre assembly, the patent allows the projector to be a compact, space-efficient unit. The lyre structure provides the necessary support volume without adding to the projector's own volume, resolving the contradiction between efficient lighting and compact size.
3Adaptability or versatility
If video projectors are mounted on motorized lyre, then the positioning flexibility is improved, but the complexity of control system increases
Solution Approach 1:
The patent implements self-service through autonomous control cards with microprocessors on each motor assembly. Each control card independently manages its own motor's rotational position data and applies preprogrammed control laws, eliminating the need for a complex centralized control system. This distributes the control intelligence across multiple simple, self-managing units, resolving the contradiction between positioning flexibility and control complexity.
Solution Approach 2:
The control system is segmented into independent control cards for each motor axis, with each card handling its own motor independently. This modular approach to control reduces overall system complexity while maintaining full positioning flexibility, as each segment operates autonomously based on its own sensor data and control algorithms.
4Illumination intensity
If heavy video projectors are mounted on motorized lyre, then the light output is improved, but the maneuverability of the assembly deteriorates
Solution Approach 1:
The patent separates the heavy lyre structure from the projector, allowing high-output projectors to be mounted on a stable, stationary lyre while the three-axis motorization provides easy maneuverability. The segmentation enables the projector to deliver high light output without compromising the overall assembly's maneuverability, as the motors handle all positioning movements.
Solution Approach 2:
The patent introduces dynamic motorized rotation capabilities to the lyre assembly, transforming a static, heavy structure into a dynamically controllable system. The three motorized axes enable the heavy assembly to be positioned and repositioned easily, resolving the contradiction between high light output (requiring heavy components) and maneuverability.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
Motorized bracket intended to receive, in a support (102), a video projector and having a base (100), a first arm (104) and a second arm (106), the first arm being connected to the base (100) at a first motorized rotation spindle (108), the second arm being connected to the first arm at a second motorized rotation spindle (110) and the second arm is connected to the support (102) at a third motorized rotation spindle (112), the motorized rotation spindles each consisting of a motor coupled to a geared motor assembly in direct engagement with the arm or the support that is to be controlled.