Dynamic Aperture Light Processing System Contrast Enhancement
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Solution Overview
Problem
Conventional HDTV solutions for enhancing contrast and detail of dark image scenes are limited, often increasing f-number and visibility of defects, and are not universally applicable to all display types, particularly due to fixed lens systems and lack of compatibility with existing platforms.
Innovation Solution
A light processing system comprising a dynamic aperture, a light-integration module, and a spatial light modulator that intensity-modulates and spatially integrates light, minimizing f-number impacts and maintaining spatial and color uniformity, with a dynamic aperture positioned between the light source and color filter to enhance image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the aperture of the lens pupil is decreased to enhance contrast and detail of dark image scenes, then the f-number increases and visibility of defects increases, but the high-angle rays that pass through the system are reduced
Solution Approach 1:
The patent segments the optical system into distinct functional components: a fixed projection lens and a separate dynamic aperture mechanism positioned at a different location. This segmentation allows the aperture to be adjusted independently without affecting the fixed lens characteristics, thereby enabling contrast enhancement while maintaining optimal ray angles and minimizing defect visibility.
Solution Approach 2:
The patent introduces a dynamic aperture as an intermediary element between the light source and the projection lens. This intermediary component modulates light intensity independently, allowing contrast enhancement in dark scenes without requiring changes to the projection lens aperture, thus avoiding the trade-off between contrast improvement and defect visibility.
2Illumination intensity
If conventional HDTV solutions are used to enhance contrast and detail of dark images, then image quality improves, but compatibility with existing platforms and display formats is limited
Solution Approach 1:
The patent creates a universal solution by positioning the dynamic aperture at a location that is accessible across different display formats and platforms. The aperture mechanism serves multiple functions: enhancing contrast in dark scenes, maintaining compatibility with fixed-length projection lenses, and adapting to various display formats (HDTV and non-HDTV), thereby achieving broad universality.
Solution Approach 2:
The patent employs a dynamic aperture that can be adjusted in real-time based on the displayed content requirements. This dynamic adjustment capability allows the system to adapt to different display formats and platform characteristics, providing enhanced contrast when needed while maintaining compatibility with existing infrastructure, thus resolving the adaptability issue.
3Illumination intensity
If the aperture size is changed to improve image quality, then contrast enhancement is achieved, but spatial uniformity and color uniformity are affected
Solution Approach 1:
The patent segments the light modulation function from the aperture control function. By positioning the dynamic aperture separately from the projection lens and using it to modulate overall light intensity rather than changing the lens aperture itself, the system achieves contrast enhancement while preserving the optical path characteristics that ensure spatial and color uniformity.
Solution Approach 2:
The patent changes the parameter being controlled from aperture size (which affects uniformity) to light intensity modulation at a different location in the optical path. By adjusting the dynamic aperture's light blocking properties rather than the projection lens aperture, the system achieves contrast enhancement while maintaining stable spatial and color composition.
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
The system provides enhanced contrast and detail for darker images with reduced visibility of defects and minimal impact on conventional display platforms, maintaining spatial and color uniformity while improving reliability and efficiency.
Implementation Method 1
a light source capable of generating light
Implementation Method 2
The light-integration module is capable of spatially integrating light received from the dynamic aperture
Data Source
AI summary
A method of processing light includes receiving an image to be displayed. The image has a brightness level. The method further includes generating light from a light source and intensity-modulating the generated light to produce light having a first intensity. The first intensity is a function of the brightness level. The method also includes spatially integrating the intensity-modulated light.