Light Adjustment Control for Natural 1/F Luminance Fluctuation
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Solution Overview
Problem
Conventional lighting devices that mimic natural light fluctuations often produce unnatural flickers and uneven light emission due to the use of point light sources, making them uncomfortable for users.
Innovation Solution
A light adjustment program that generates smoothed data through moving average processing with different periods on basic data with 1/f fluctuation characteristics, followed by arithmetic processing to create light adjustment data, which is used to change the luminance of a light-emitting device in a time series, thereby mimicking natural light patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If moving average processing with a single period is used on basic data, then the processing is simple, but the light fluctuation appears unnatural and causes discomfort
Solution Approach 1:
The patent divides the single moving average processing into multiple stages with different periods (first moving average with period N1, second moving average with period N2). This segmentation allows each stage to handle different aspects of the fluctuation, creating a more natural light pattern that avoids discomfort while maintaining reasonable processing complexity.
2Device complexity
If point light source is used, then the device structure is simple, but the light emission becomes uneven
Solution Approach 1:
The patent transitions from point light emission to surface light emission by using a light-emitting plate with multiple light-emitting points arranged in a matrix pattern. This dimensional change from 0D point source to 2D surface source provides uniform light distribution across the emission area while maintaining device simplicity.
3Object-affected harmful factors
If multiple moving average periods are used, then the light fluctuation becomes natural and comfortable, but the processing complexity increases
Solution Approach 1:
The patent performs preliminary actions by pre-defining multiple moving average periods (N1, N2, etc.) and their respective weights (A1, A2, etc.) in the program. This preliminary configuration allows the system to achieve natural light fluctuations through straightforward arithmetic operations without requiring complex real-time processing or additional hardware.
Data Source
AI summary
Provided is a novel light adjustment program that can make a human feel at ease. Provided is the light adjustment program that includes the steps of obtaining basic data having 1/f fluctuation characteristics; generating first smoothed data and second smoothed data by performing moving average processing with different periods on the basic data having 1/f fluctuation characteristics; generating light adjustment data by subjecting the first smoothed data and the second smoothed data to arithmetic processing; and changing luminance of a light-emitting device in time series in accordance with the light adjustment data.