Multicolor Illumination Single Panel Display Source
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Solution Overview
Problem
Traditional multicolor illumination systems in projection systems require separate optical channels for each color, leading to reduced maximum brightness as each color is projected sequentially, which limits the overall brightness of the display.
Innovation Solution
A display system that uses a light source and light pipes with color interfaces, such as filters, quantum dots, or phosphors, to create and combine multiple color illumination patches simultaneously, allowing for the projection of a multicolored image without the need for separate channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If separate optical channels are used for each color, then color separation and projection are achieved, but the maximum brightness of the display is reduced by a factor of the number of separate colors projected
Solution Approach 1:
The patent combines multiple color illumination paths into a single optical channel by using a single display source that is sequentially illuminated by different colors through a color wheel, LED pulses, or lasers. The optical components (display, relay optics, projection lens) are shared across all colors, merging what would traditionally require separate channels. This resolves the contradiction by maintaining color separation capability while eliminating the brightness penalty of multiple separate optical paths.
Solution Approach 2:
The single display source performs multiple functions by being illuminated with different colors in sequence. The same display panel, relay optics, and projection lens are used to project all color components, making these components universal rather than dedicated to a single color. This multi-functionality approach allows the system to achieve full-color projection without requiring separate optical channels for each color, thereby preserving maximum brightness.
2Adaptability or versatility
If sequential color projection is used, then multicolor image projection is achieved, but the brightness is reduced because each color is projected for one-third of a frame
Solution Approach 1:
The system uses periodic action by sequentially illuminating the single display source with different colors in rapid succession (using a color wheel, LED pulses, or lasers). Each color is projected for a portion of the frame time, and the human eye integrates these sequential images into a perceived full-color image. This periodic color sequencing enables multicolor projection capability while maintaining high brightness, as the full illumination intensity is applied to the single display source during each color phase, unlike divided illumination in separate channels.
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 enhances the brightness of the display by enabling simultaneous projection of multiple colors, improving the overall image quality and efficiency of the illumination system.
Implementation Method 1
Each light pipe has an input end and an output end and is configured to allow the light to enter via the input end and exit via the output end
Implementation Method 2
The at least one color interface includes at least one color material and each color material has a different color characteristic. Light passing through the color material creates an illumination patch associated with the color characteristic of the color material
Data Source
AI summary
A display system for providing multicolor light patches for illuminating display images includes at least one light source for providing a light, at least one light pipe having an input end and an output end for allowing the light to enter via the input end and exit via the output end, and at least one color interface coupled to the output end of the at least one light pipe. The at least one color interface includes at least one color material and each color material has a different color characteristic. Light passing through the color material creates an illumination patch associated with the color characteristic of the color material. The display system further includes an optical device coupled with the at least one color interface and configured to receive the illumination patches, combine the illumination patches, and cause a combined illumination patch to be projected as a display image.