Color Wheel Timing for Image Display Brightness
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Solution Overview
Problem
Existing image display systems face inefficiencies in utilizing light sources, leading to wasted light and reduced image brightness due to ineffective timing of color presentation, particularly caused by luminance differences between adjacent color segments in color wheels.
Innovation Solution
A method and system that sequentially illuminate a spatial light modulator using a color wheel with timing adjustments based on luminance differences between adjacent color segments to optimize main and spoke intervals, minimizing light waste and enhancing image brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a color wheel is used to sequentially filter light beam into different colors, then color image display is achieved, but light is wasted during transition periods between color segments
Solution Approach 1:
The system performs preliminary timing adjustments by determining the luminance difference between adjacent color segments before the transition occurs. Based on this predetermined knowledge, the light modulator is proactively controlled to be in a non-display state during transition periods, preventing light waste before it happens during the color wheel rotation between segments.
2Productivity
If timing is adjusted based on luminance difference between adjacent color segments, then light utilization is improved, but system complexity increases due to timing calculations
Solution Approach 1:
The system changes the timing parameters of light modulator operation based on the luminance difference parameter between adjacent color segments. By calculating and adjusting the timing intervals (main intervals and spoke intervals) according to this luminance parameter, the system optimizes light utilization without requiring complex hardware modifications, only computational timing adjustments.
3Stability of the object's composition
If the light modulator remains active during color transitions, then continuous image display is maintained, but image quality deteriorates due to mixed colors from adjacent segments
Solution Approach 1:
The system creates a timing model that copies or replicates the ideal timing behavior across different color segment transitions. By determining the luminance difference between adjacent segments and applying consistent timing adjustments based on this model, the system maintains color purity across all transitions while minimizing the total non-display time through optimized interval calculations.
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 approach increases light utilization, resulting in a brighter and more efficient image display system capable of handling higher ambient light levels and revealing detailed image features.
Implementation Method 1
a color filter may be implemented that alternatively filters the source light beam such that differing colors of the source light beam may be periodically directed to the light modulator
Implementation Method 2
These light modulators may each have a number of spatially oriented refractive, diffractive, absorptive, or reflective elements that are arranged in a two-dimensional configuration
Data Source
AI summary
In accordance with the teachings of the present disclosure, a method and system for the timing color of an image display are provided. In one embodiment, a method for displaying image includes sequentially illuminating a spatial light modulator with a plurality of colors by shining light through a color wheel having a plurality of adjacent color segments. The method further includes determining, a time period in which the output of the color wheel is deemed not to correspond solely to either of the two adjacent color segments for at least a portion of the spatial light modulator. The time period is based at least in part on the luminance difference between two adjacent color segments in the color wheel.