CMY Filter With Non-Uniform Thickness For Smooth Color Transition
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Solution Overview
Problem
Current CMY color mixing systems in stage lighting suffer from sudden and non-uniform color transitions, failing to produce smooth, gradual color changes.
Innovation Solution
A filter with a uniform region and a color mixing region, where the filtering film thickness in the uniform region is greater than or equal to that in the color mixing region, and the color mixing region has varying thicknesses, designed to allow smoother light beam conversion and uniform color change, with specific patterns such as semi-circular comb-like and arc-shaped designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a filter with uniform filtering film thickness is used, then the manufacturing process is simple, but the color conversion is not uniform and transitions are sudden
Solution Approach 1:
The filtering film is designed with different thickness characteristics in different regions: the color mixing region has non-uniform thickness (thinner at center, thicker at edges) to enable gradual color transitions, while the uniform region maintains consistent thickness for stable color output. This local differentiation resolves the contradiction between manufacturing simplicity and color conversion uniformity.
2Manufacturing precision
If the filtering film thickness in the color mixing region is reduced, then the color transition becomes smoother, but the filtering efficiency may be reduced
Solution Approach 1:
The filtering film thickness is locally optimized: in the color mixing region, the reduced thickness (especially at the center) enables smooth color transitions by allowing gradual light conversion, while the uniform region maintains sufficient thickness to ensure adequate filtering efficiency. This resolves the contradiction between transition smoothness and mixing efficiency.
Solution Approach 2:
The filter is divided into distinct functional regions: the color mixing region with non-uniform thickness for gradual color transitions, and the uniform region with consistent thickness for maintaining filtering efficiency. This segmentation allows each region to optimize its performance for its specific function.
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
The solution enables more uniform color conversion and improved color mixing efficiency, resulting in a smoother, more natural color transition when combined with a CMY color mixing assembly and LED light source device.
Implementation Method 1
a filter comprises a substrate and a filtering film plated on the substrate, wherein the filtering film comprises a uniform region and a color mixing region
Implementation Method 2
the thickness of the filtering film in the uniform region is greater than or equals to the thickness of the filtering film in the color mixing region
Data Source
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AI summary
A filter, a CMY color-mixing component utilizing the filter, and an optical system thereof. The filter comprises a substrate and a filter film coated onto the substrate. The filter film comprises a uniform area and a color-mixing area. The thickness of the filter film is uniform on the uniform area. The thickness of the filter film is not uniform on the color-mixing area. The thickness of the filter film on the uniform area is greater than or equal to the thickness of the filter film on the color-mixing area. The thickness of the filter film at the central area of the color-mixing area is greater than the thickness of the filter film at either wing region. The color-mixing area is provided at a side of the filter that is first connected to an optical path.