Color Filter Positioning for Compact Lighting Color Temperature Correction
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Solution Overview
Problem
Existing light fixtures in the entertainment industry face challenges in providing compact solutions with both CMY color mixing and color temperature correction functionality, as previous systems are bulky and require significant space for multiple components.
Innovation Solution
A light fixture with a controller and three independently movable color filters (cyan, magenta, and yellow dichroic filters) that can adjust color and color temperature by determining the optimal positions of these filters based on input color and temperature parameters, effectively emulating a color temperature correction filter without the need for a physical one, thus reducing the number of optical components and space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple color filters and color temperature correction filters are used to achieve both CMY color mixing and color temperature correction, then color control versatility is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the color temperature correction function with the CMY color mixing filters by making them independently movable and controllable. The same physical filter structures serve dual purposes: they perform color mixing when positioned in the light beam and can be independently controlled to achieve color temperature correction effects, eliminating the need for separate dedicated color temperature correction filters.
Solution Approach 2:
The color filters are designed with multi-functionality, serving both as CMY color mixing elements and as color temperature correction elements. By independently controlling the position and orientation of these filters, the system can achieve various color mixing ratios as well as color temperature adjustments, making each filter component perform multiple functions.
2Adaptability or versatility
If multiple color filters and color temperature correction filters are used to achieve both CMY color mixing and color temperature correction, then color control versatility is improved, but the space required in the light fixture increases
Solution Approach 1:
The patent merges the color temperature correction function into the existing CMY filter structure, eliminating the need for separate physical components. The same filter housing and mounting mechanism accommodate both color mixing and color temperature correction operations, significantly reducing the overall volume required in the light fixture.
Solution Approach 2:
By designing the color filters to perform both color mixing and color temperature correction functions, the patent reduces the total number of components needed. This multi-functional approach allows the system to achieve full color control versatility while occupying minimal space within the fixture housing.
3Manufacturing precision
If traditional separate color mixing and color temperature correction systems are used, then color accuracy is improved, but the number of moving parts and control complexity increase
Solution Approach 1:
The patent combines color mixing and color temperature correction control into a single integrated control system. The controller independently adjusts the position of the same color filters for both functions, reducing control complexity while maintaining color accuracy through coordinated movement of the filter elements.
Solution Approach 2:
The system maintains color accuracy by precisely controlling the position parameters of the color filters. By changing the position and orientation parameters of the same physical filters, the system achieves both color mixing ratios and color temperature adjustments with high precision, eliminating the need for separate control mechanisms.
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
Enables a compact light fixture with a wide range of color effects and temperature adjustments, providing more options for lighting designers while minimizing space and cost, and allowing for various color temperature corrections without physical filter exchanges.
Implementation Method 1
three filters sets each include three pivotable dichroic filter elements
Implementation Method 2
In subtractive color mixing a number of color filter are inserted into the light beam from at least one light source and the color filter subtracts optical wavelengths from the light beam in order to create a certain color
Data Source
AI summary
An approach for controlling a light fixture comprising one light source and 3 different color filters, where the color filters can be arranged in a number of positions in relation to one another and in relation the light. The method comprises the steps of receiving a color parameter relating to the position of the color filters and a color temperature parameter relating to the color temperature of the light, obtaining a resulting color based on color parameter, the color temperature parameter and spectral characteristics of the filters, obtaining color filter position parameters indicating the position of the filters based on the resulting color, the spectral characteristics of the filters and spectral characteristic of said light; and arranging the color filters in relation to one another and in relation to said light based on color filter parameters.