Common Motor Drive for Opposite Synchronous Light Rotation
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Solution Overview
Problem
Existing projector systems face challenges in achieving synchronous movement of light forming means, particularly with step motors which can lose steps during operation, making it difficult to maintain precise positioning and color mixing, especially when using computer-controlled projectors.
Innovation Solution
A drive mechanism that rotates light forming means in opposite directions around a common axis using a common motor, with an optimal gear mechanism to convert the rotation, ensuring synchronous but opposite movement, and utilizing gear means to compensate for geometric failures in color patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If step motors are used to rotate light forming means independently, then the light forming means can be moved completely independent of each other, but the motors may lose steps during operation, making it difficult to maintain precise positioning and synchronous movement
Solution Approach 1:
The patent combines multiple light forming means onto a single rotating axis, so they all rotate together as one unit. This eliminates the need for multiple independent motors and their associated step-loss problems, while still allowing different light forming means to be positioned differently on the axis. The merging approach maintains reliability while preserving operational flexibility.
Solution Approach 2:
A single motor with a common rotating axis serves multiple light forming means simultaneously. This universal approach allows one motor to control the rotation of multiple color flags or dimmer means, reducing system complexity and eliminating the reliability issues of multiple independent motors while maintaining the ability to independently position each light forming means on the shared axis.
2Measurement precision
If synchronous rotation of light forming means is achieved using multiple independent motors, then precise positioning can be maintained, but synchronizing the motors to operate in opposite directions is very difficult
Solution Approach 1:
By merging multiple light forming means onto a single rotating axis, the patent eliminates the need for multiple motors and their complex synchronization requirements. The single motor provides inherent synchronization, while the opposite rotation is achieved through a simple gear mechanism, dramatically reducing device complexity while maintaining positioning precision.
Solution Approach 2:
The patent introduces a gear mechanism as an intermediary between the single motor and the light forming means. This gear mechanism converts the single motor's rotation into opposite rotations for different light forming means, achieving the desired synchronous opposite movement without the complexity of coordinating multiple independent motors.
3Reliability
If gear mechanism is used to convert rotation for opposite movement, then synchronous opposite rotation can be achieved, but the system requires additional mechanical components
Solution Approach 1:
The gear mechanism serves as a simple intermediary that takes the single motor's rotation and converts it into opposite rotations for the light forming means. This approach achieves reliable synchronous movement with minimal additional components, as the gear mechanism is a straightforward mechanical element that does not significantly increase system complexity.
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
This solution allows for precise and synchronized rotation of light forming elements, preventing step motor errors and ensuring accurate color mixing and pattern formation, even with partial overlapping of color flags or dimmer patterns, enhancing the quality and efficiency of projector systems.
Implementation Method 1
The present invention relates to a drive, primarily for optical light forming means, which light forming means can be used in a projector, which projector comprises light generating means, which light generating means form a light path passing through light forming means, which drive comprises at least one motor
Implementation Method 2
The rotating movement for one of the light forming means can be converted by a gear mechanism, which gear mechanism is connected to the motor
Data Source
AI summary
A drive, primarily for an optical light forming device, which light forming device can be used in a projector, which light forming device comprises an at least partly open area for light, where at least two light forming devices cooperate in a light path for forming the light, which light forming devices are rotated around a common axis in and out of the light path. To achieve opposite synchronous movement of light forming means, the light forming devices are rotated equal in opposite directions around the common axis by a common motor. Hereby, it can be achieved that the two light forming devices are rotated synchronously, but opposite in relation to each other. The opposite synchronous movement is very important if the light fainting devices are part of a modern computer controlled projector using step motors.