Adjustable Light-Blocking Module for Projection Lens Stray Light
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Solution Overview
Problem
The existing projection systems face challenges in optimizing image quality due to fixed light-blocking sheets within the projection lens, which cannot be adjusted to accommodate variations in the optical system, leading to suboptimal contrast and definition of projected images.
Innovation Solution
A correcting apparatus with a modular design that allows the correcting module to be adjusted on the outer or inner circumference of the projection lens, enabling it to shield stray light effectively and improve image quality by rotating or fixing the module to the appropriate position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the light-blocking sheet is fixed inside the projection lens, then the structure is simple and easy to manufacture, but the position cannot be adjusted to accommodate variations in the optical system, resulting in suboptimal image quality
Solution Approach 1:
The light-blocking sheet is transformed from a fixed structure to an adjustable one by adding a rotating mechanism with multiple positioning holes. The sheet can be rotated to different angles and fixed at optimal positions to accommodate variations in the optical system, making the structure dynamic rather than static.
Solution Approach 2:
The adjustment mechanism is segmented into distinct functional parts: the light-blocking sheet itself, the rotating mechanism, multiple positioning holes at different angles, and fixing components. This segmentation allows independent adjustment of the sheet's position while maintaining a relatively simple overall structure.
2Manufacturing precision
If the light-blocking sheet is fixed inside the projection lens, then the manufacturing process is simple, but the position cannot be corrected for production variations, leading to increased cost and time for optimization
Solution Approach 1:
Multiple positioning holes are pre-drilled at different angles and positions on the rotating mechanism before assembly. This preliminary preparation allows for quick adjustment and fixation of the light-blocking sheet at the optimal position without requiring complex post-assembly modifications or precise manual positioning during manufacturing.
3Object-affected harmful factors
If the light-blocking sheet is disposed inside the projection lens, then stray light can be blocked, but the fixed position cannot be optimized for different types of optical systems, resulting in reduced image contrast and definition
Solution Approach 1:
The position and orientation parameters of the light-blocking sheet can be changed by rotating it to different angles and selecting different positioning holes. This allows the sheet to be optimized for different optical system configurations and variations, improving its effectiveness in blocking stray light across different applications.
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 dynamic adjustment of the light-blocking mechanism to suit various optical system variations, enhancing the contrast and definition of projected images, thereby optimizing image quality.
Implementation Method 1
The correcting module shields a light signal for producing a corrected light signal
Data Source
AI summary
The present invention provides a correcting apparatus for correcting images projected from a projection system. The correcting apparatus includes a correcting module and a projection lens. The correcting module shields a light signal for producing a corrected light signal. The projection lens receives the corrected light signal for producing an image light signal. The correcting module is disposed on a first outer circumference at one end of the projection lens.