Projection Lens Switching Assembly for Aperture and Lens Control
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Solution Overview
Problem
Projection lenses with fixed apertures cannot meet consumer demands for high brightness and contrast, and adding an aperture adjustment module complicates the design and increases costs due to the need for additional space and wiring.
Innovation Solution
A projection lens with a switching assembly that allows for simultaneous control of both aperture and lens element adjustment modules, sharing electrical contacts to simplify the existing electrical connection interface and enable flexible switching between aperture and lens element adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an aperture adjustment module is added to a projection lens, then the brightness and contrast of projection images are improved, but the arrangement space and wiring requirements increase, and the lens elements require redesign and rearrangement
Solution Approach 1:
The electrical connection interface is designed with multi-functionality to serve both the aperture adjustment module and the lens element adjustment module. The interface includes a first electrical contact for aperture adjustment and a second electrical contact for lens element adjustment, allowing a single interface structure to control multiple functions without requiring separate independent interfaces for each module
Solution Approach 2:
The patent merges the control functions of the aperture adjustment module and lens element adjustment module into a unified electrical connection interface. By combining the electrical contacts and control signals into a single interface structure, the system reduces the overall wiring complexity and arrangement space requirements while maintaining both adjustment capabilities
2Illumination intensity
If an aperture adjustment module is added to a projection lens, then the brightness and contrast of projection images are improved, but additional arrangement space is required
Solution Approach 1:
The aperture adjustment module and lens element adjustment module are integrated within the existing lens structure in a nested arrangement. The electrical connection interface is embedded within the lens body, and the adjustment modules share the same spatial envelope as the existing lens elements, allowing the aperture adjustment functionality to be added without proportionally increasing the external dimensions or arrangement space
3Illumination intensity
If an aperture adjustment module is added to a projection lens, then the brightness and contrast of projection images are improved, but the lens elements require redesign and rearrangement
Solution Approach 1:
The projection lens is segmented into distinct functional modules: an aperture assembly with an aperture adjustment module, and a lens element group with a lens element adjustment module. Each module can be independently designed, manufactured, and assembled. The electrical connection interface is divided into separate contacts for aperture adjustment and lens element adjustment, allowing each module to be optimized without requiring complete redesign of the entire lens system
Data Source
AI summary
A projection lens, a control method thereof, and a projection device are provided. The projection lens is adapted for the projection device, and includes a lens body including an aperture assembly and a lens element group; an aperture adjustment module disposed on the lens body, connected to the aperture assembly, and configured to adjust the aperture assembly; a lens element adjustment module disposed on the lens body, connected to the lens element group, and configured to adjust the lens element group; and a switching assembly coupled to the aperture adjustment module and the lens element adjustment module. The switching assembly is configured to switch to a first state, so that the lens element adjustment module adjusts the lens element group, and the switching assembly is configured to switch to a second state, so that the aperture adjustment module group adjusts the aperture assembly.