Grooved Light Absorbing Structures for Theater Contrast
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Solution Overview
Problem
High contrast ratios in venues such as theaters and auditoriums are hindered by light reflections from interior surfaces, which cannot be adequately controlled by ambient light management alone, as diffused and reflected light traverses multiple optical paths and reduces the maximum contrast of projected images.
Innovation Solution
Deployment of light absorbing structures with grooved surfaces on interior surfaces like walls, ceilings, and floors, specifically designed to trap and absorb light reflections, using materials with low reflectance and sharp edges to minimize light reflections back to the display screen, thereby enhancing contrast ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If ambient light control measures are implemented, then some improvement in contrast ratio is achieved, but reflected light from interior surfaces still reduces maximum contrast ratios
Solution Approach 1:
The patent converts the harmful reflected light into a beneficial effect by using light-absorbing structures that trap and absorb the reflected light, preventing it from returning to the screen. The grooved surfaces and dark materials that would normally reflect light are instead designed to absorb it, transforming the harmful reflection into useful light absorption that enhances contrast ratio.
Solution Approach 2:
The patent employs light-absorbing structures with grooved surfaces that create multiple internal reflections and absorption paths. These structures function similarly to porous materials by providing numerous interfaces for light interaction, where each groove and surface irregularity increases the probability of light absorption rather than reflection, thereby reducing the harmful reflected light while improving contrast.
2Object-generated harmful factors
If light absorbing structures with grooved surfaces are deployed, then reflected light is effectively trapped and absorbed, but device complexity increases
Solution Approach 1:
The patent divides the light-absorbing function into multiple discrete elements - grooved surfaces, dark materials, and strategically positioned absorbers throughout the interior space. Rather than implementing a single complex system, the solution segments the problem into manageable components that can be independently designed, installed, and maintained, reducing overall system complexity while achieving effective light absorption.
Solution Approach 2:
The patent applies light-absorbing structures selectively at specific locations where reflected light is most problematic, rather than uniformly throughout the entire interior. By concentrating absorption efforts at key reflective surfaces and optical paths, the solution achieves effective reflected light control without the complexity of a comprehensive system covering all surfaces.
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
Significantly improves maximum contrast ratios by reducing reflected light from interior surfaces, achieving contrast ratios of up to 10,000:1 by effectively absorbing light reflections and maintaining image clarity without hindering the transmission of light intended for the audience.
Implementation Method 1
Deployment of light absorbing structures with grooved surfaces on interior surfaces like walls, ceilings, and floors, specifically designed to trap and absorb light reflections
Implementation Method 2
using materials with low reflectance and sharp edges to minimize light reflections back to the display screen
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A light absorbing configuration for a venue in which images are projected to a display screen located at or near a front of the venue, may comprise a light absorbing structure deployed on one or more front portions on one or more of a ceiling, side walls, or a floor of the venue. The light absorbing structure comprises grooves formed at least in part by a first type of light reflective surfaces configured to receive a portion of light rays directly reflected off the display screen and a second type of light reflective surfaces configured to receive light rays reflected off the first type of light reflective surfaces.