Light Fixture Spectral Control via Intensity Segmentation
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Solution Overview
Problem
Complex color control methodologies such as HSI and RGB do not translate consistently across multiple light fixtures, making it difficult for users to manually control the spectral content of a light fixture's output.
Innovation Solution
A system and method that identifies light source output intensity values based on a target color, allowing users to manually modify these values to change the spectral content while maintaining the target color, using techniques like CIE xyY color space and iterative adjustments to achieve desired color outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If complex color control methodologies (HSI, RGB) are used to control light fixture output, then color selection capability is improved, but consistency across multiple fixtures deteriorates
Solution Approach 1:
The patent transitions from complex color control parameters (HSI, RGB) to fundamental spectral parameters (wavelength, intensity) as the basis for color control. By changing the control parameters to wavelength-specific values for each light source, the system achieves both versatile color selection and consistent output across fixtures, as wavelength is an intrinsic physical property that translates reliably across different hardware implementations.
2Ease of operation
If manual control of spectral content is enabled, then user control capability is improved, but system complexity increases
Solution Approach 1:
The patent segments the light fixture into individual controllable light sources, each associated with specific wavelength ranges. This segmentation allows users to control spectral content by adjusting individual light source intensities rather than managing complex global color parameters. The segmentation approach simplifies user interaction while maintaining the ability to achieve desired spectral compositions through straightforward intensity adjustments of discrete light source components.
Data Source
AI summary
Systems and methods for controlling the spectral content of the output of a light fixture. The method of one embodiment includes driving the output of a light fixture to a target color and controlling the spectral content of the output of the light fixture. For example, a desired color is inputted using a color control methodology. A set of light source output intensity values that produce the desired color are identified, and then the light sources are driven to the identified output intensity values. A user is able to control the spectral content of the output of the light fixture by modifying the output intensity value of one or more of the light sources. After modifying the output intensity values, the color control and matching technique is used to identify a new set of output intensity values that maintain the previous target color but incorporate the changes in spectral content.