Multi-Projector Support for Keystone Distortion Correction
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Solution Overview
Problem
Existing projection systems with multiple projectors face challenges in easy assembly and maintaining image size when superimposing images, as the relative positional relation between projectors is critical and keystone distortion correction can reduce image size.
Innovation Solution
A support system that allows projectors to be positioned with different projection distances and orientations, enabling easy calibration and maintaining image size by locating projection lenses close together and providing a mechanism for keystone distortion correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple projectors are used for stack projection to improve brightness and display quality, then the projected image brightness and quality are improved, but the difficulty of assembly and positioning increases due to the critical relative positional relations required between projectors
Solution Approach 1:
A support structure acts as an intermediary between multiple projectors, providing a common mounting platform that automatically establishes correct relative positional relations. The support includes positioning mechanisms such as adjustable arms or mounting brackets that guide projectors into proper alignment, eliminating the need for manual positioning and reducing assembly difficulty while maintaining image quality.
Solution Approach 2:
The support structure is divided into modular components, each responsible for holding and positioning a specific projector. This segmentation allows independent adjustment of each projector's position and orientation, making assembly easier while ensuring correct relative positioning for image superposition.
2Ease of operation
If projectors are positioned at the same projection distance for simple setup, then assembly is easier, but keystone distortion correction becomes necessary which reduces image size
Solution Approach 1:
The support structure incorporates dynamic adjustment mechanisms that allow the projection distance and angle of each projector to be varied independently. This enables the system to achieve both easy assembly (by allowing flexible positioning) and accurate image size (by adjusting positions to minimize keystone distortion), as the projectors can be positioned at optimal rather than identical distances.
3Manufacturing precision
If projectors are positioned with different projection distances to avoid keystone distortion, then image size is maintained, but the complexity of positioning and calibration increases
Solution Approach 1:
The support structure includes self-aligning features such as mechanical guides, alignment marks, or automated positioning systems that automatically establish the correct different projection distances for each projector. This eliminates the need for complex manual calibration, as the support itself provides the positioning information and constraints, reducing positioning complexity while maintaining accurate image size.
Data Source
AI summary
A projection system includes a first projector and a second projector. The projection system superimposes images projected from the first and second projectors on a projection surface and displays a projected image. The projection system includes a support configured to support the first projector and the second projector. The support supports the first projector and the second projector in positions where projection distances from the first projector and the second projector to the projection surface are different.