Projector Light Dimmer Segmentation for Enhanced Dynamic Range
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional projector systems face challenges in achieving Enhanced Dynamic Range (EDR) capabilities, particularly in exceeding cinema standards for contrast ratio and color gamut, and in efficiently managing light to produce desired dynamic range in projected images.
Innovation Solution
The implementation of a projector display system that includes a light dimmer, such as an adjustable iris or LCD stack, and a modulator, like a MEMS or DMD array, controlled by a processor to modulate light and adjust luminance, allowing for global or regional dimming and independent color channel management to achieve desired dynamic range in projected images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single light source is used to illuminate the screen, then the system structure is simple, but the contrast ratio and dynamic range cannot exceed typical cinema standards
Solution Approach 1:
The single light source is segmented into multiple independent light sources (first light source, second light source, etc.), each capable of independent intensity control. This segmentation allows different regions or color channels to have different luminance levels, enabling enhanced contrast ratio and dynamic range while maintaining reasonable system complexity through modular architecture
Solution Approach 2:
The light sources are made dynamically controllable with independent intensity adjustment capabilities. The system can dynamically adjust the luminance of each light source based on the image content requirements, allowing the contrast ratio to be optimized in real-time without requiring a completely complex fixed structure
2Illumination intensity
If light dimming is applied to achieve desired dynamic range, then the contrast ratio is improved, but the light distribution control becomes more complex
Solution Approach 1:
The light dimming function is segmented across multiple independent light sources rather than using a single complex dimming mechanism. Each light source can be independently dimmed to achieve the desired dynamic range, simplifying the control architecture compared to a single centralized dimming system while still providing enhanced contrast ratio
Solution Approach 2:
The system changes the luminance parameter of each light source independently to achieve the desired dynamic range. By adjusting the intensity parameters of multiple light sources rather than using a single complex control mechanism, the system achieves enhanced contrast ratio with manageable control complexity
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 solution enables the creation of projector systems capable of exceeding typical cinema standards for contrast ratio and color gamut, providing enhanced dynamic range and improved contrast by precisely controlling light distribution and modulation, resulting in higher quality projected images.
Implementation Method 1
a light dimmer, said light dimmer being illuminated by said light source and said light dimmer being controller by the controller to dim the amount of light from the light source
Implementation Method 2
a first modulator, said first modulator being illuminated by light from said light dimmer and capable of modulating light from said light dimmer
Data Source
AI summary
Projector display systems comprising a light dimmer and first modulator are disclosed. The light dimmer may comprise an adjustable iris, adjustable light sources and/or LCD stack that is capable of lowering the luminance of the light source illuminated the first modulator. The first modulator may comprise a plurality of analog mirrors (e.g. MEMS array) and the second modulator may comprise a plurality of mirrors (e.g., DMD array). The display system may further comprise a controller that sends control signals to the light dimmer and first modulator. The display system may render a desired dynamic range for rendering a projected image by a combination of such control signals.