Dynamic Illumination Splitting for Wide Color Gamut Projection
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Solution Overview
Problem
Conventional projection systems using three primary colors (red, green, and blue) have a limited color gamut, and increasing the number of primary colors to achieve a wider gamut either results in inefficient illumination usage or complex, expensive systems.
Innovation Solution
An imaging system with a dynamic and static selecting means that splits an illumination beam into multiple primary color sub-beams, allowing for the generation of a wide color gamut with fewer image modulators by dynamically selecting different sets of primary color sub-beams and directing them to static selecting means for modulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If more than three primary colours are used to generate a wider colour gamut, then the colour gamut is improved, but the system complexity and cost increase due to requiring more dedicated modulators
Solution Approach 1:
A single image modulator is used to modulate multiple primary colour sub-beams sequentially, making the modulator multi-functional. The modulator handles different colour channels at different time slots, eliminating the need for separate dedicated modulators for each primary colour, thus reducing system complexity and cost while maintaining wide colour gamut capability
Solution Approach 2:
The illumination source generates multiple sets of primary colour sub-beams in periodic time slots, with each set corresponding to different primary colours. This temporal multiplexing allows a single modulator to process multiple colours sequentially, resolving the contradiction between wide colour gamut and system complexity
2Stability of the object's composition
If more than three primary colours are used to generate a wider colour gamut, then the colour gamut is improved, but the illumination efficiency decreases due to higher illumination loss
Solution Approach 1:
The system uses periodic time-slot-based illumination where different primary colour sub-beams are generated and modulated in sequential time slots. This approach improves illumination efficiency by concentrating illumination power on fewer active components at any given time, reducing overall illumination loss while still achieving wide colour gamut through temporal multiplexing of multiple primary colours
Solution Approach 2:
Multiple primary colour sub-beams are combined and directed to a single image modulator, which processes them sequentially. This merging approach consolidates the illumination path, reducing the number of separate illumination channels and minimizing illumination loss while maintaining the capability to display wide colour gamut
3Device complexity
If a single chip modulation system is used to generate more than three primary colours, then the system complexity is reduced, but the illumination efficiency decreases due to high amount of unused illumination
Solution Approach 1:
The illumination source operates in periodic time slots, generating different primary colour sub-beams sequentially. This temporal multiplexing allows efficient use of illumination power by activating only the required primary colours at specific times, reducing illumination loss while maintaining simple system architecture through single modulator usage
Solution Approach 2:
The system dynamically switches between different primary colour sub-beams in different time slots, adapting the illumination output to the specific colour requirements. This dynamic operation improves illumination efficiency by avoiding the generation of excessive or unused illumination, while the single modulator maintains system simplicity
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 enables the creation of imaging systems with improved color gamut and dynamic range while reducing illumination loss and the number of image modulators required, resulting in cost-effective and efficient imaging solutions.
Implementation Method 1
an illumination splitting means comprising a dynamic selecting means adapted for receiving at least one illumination beam and subsequently generating different sets of primary colour sub-beams from the at least one illumination beam and a static selecting means adapted for receiving at least one illumination beam and splitting the at least one illumination beam in different sets of primary colour sub-beams
Data Source
AI summary
An imaging system (100) for displaying color images is described. The imaging system (100) comprises an illumination source (102) for generating an illumination beam, an illumination splitting means (106) typically for generating different primary color illumination beams and a plurality of image modulators (104a, 104b, 104c). The illumination splitting means (106) comprises a dynamic selecting means (108) adapted for, for a single color image to be imaged, subsequently generating different sub-sets of primary color sub-beams from said illumination beam and directing these sub-sets of primary color sub-beams to a static selecting means (110). The illumination splitting means (106) also comprises a static selecting means (110) adapted for, for each of said subsequently generated sub-sets of primary color sub-beams, directing primary color sub-beams to said plurality of image modulators (104a, 104b, 104c) for modulating each of said directed primary color sub-beams from said sub-sets for generating said single color image to be imaged. The invention furthermore relates to a controller for synchronization between the image modulators and the dynamic selecting means and to a method for imaging an image.