Stereoscopic Display Module Layout for Optical Isolation and Light Throughput
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Solution Overview
Problem
Current stereoscopic display systems struggle to provide an effective 3D viewing experience outside traditional movie theater environments, such as on billboards and large display devices, due to limitations in optical isolation and light transmission, often causing viewer discomfort like headaches.
Innovation Solution
The use of high opacity fillers to optically isolate light emitters, combined with polarizers and a low opacity coating, ensures that a high percentage of light passes through, enhancing the 3D effect by matrixing sets of light emitters and polarizers in a checkerboard arrangement, allowing at least 45% to 90% of light to pass through.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If light emitters are placed close together in stereoscopic display systems, then device complexity is reduced and manufacturing is simplified, but optical isolation between emitters deteriorates causing light leakage and reduced polarization effectiveness
Solution Approach 1:
A white opaque filler material is introduced as an intermediary substance between adjacent light emitters of different polarization states. This filler extends from the substrate up to the bottom surface of the polarizing film, creating an optical barrier that prevents light from one emitter from reaching adjacent emitters or their corresponding polarizers, thereby achieving effective optical isolation without increasing device complexity
Solution Approach 2:
The polarizing film is configured with different polarization states (first and second polarization states) in different local regions corresponding to different light emitters. The opaque filler is selectively positioned between specific emitters to provide localized optical isolation where needed, allowing each region to have optimized optical properties for its specific function
2Illumination intensity
If more light is allowed to pass through the display structure, then brightness and viewing quality improve, but optical isolation between different polarization channels deteriorates
Solution Approach 1:
A polarizing film in the form of a thin flexible film is positioned over the light emitters. This film allows light to pass through while providing polarization separation, enabling high light transmission (at least 45%, preferably at least 75%, more preferably at least 90%) while maintaining effective polarization channels for stereoscopic viewing
Solution Approach 2:
The opaque filler material serves as a mediator between the light emitters and the polarizing film, extending up to the bottom surface of the film. This configuration ensures that light from each emitter is directed through its corresponding polarizer without leakage, maximizing light transmission while maintaining polarization separation
3Device complexity
If traditional color-coded approaches are used to segregate viewing channels, then device complexity is reduced, but viewer comfort deteriorates causing headaches
Solution Approach 1:
The invention uses polarization-based color segregation instead of traditional color-coded approaches. By using polarizing films with different polarization states (linear or circular polarization) rather than color filters, the system maintains simplicity while eliminating the harmful effects of color-based separation that cause viewer discomfort and headaches
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 significantly improves the 3D viewing experience by ensuring a high percentage of light is utilized, reducing ghosting effects and enhancing polarization, thereby providing a more comfortable and immersive experience across various display devices.
Implementation Method 1
the high opacity filler material causes a high percentage of the light from the sets of light emitters to either be absorbed by the high opacity filler material
Implementation Method 2
Stereoscopic display systems attempt to recreate that visual experience using polarizers that present different views to each eye of a viewer
Data Source
AI summary
Light emitters are optically isolated from each other by a high opacity filler, resulting in a large percentage of the emitted light passing through the polarizers. Ideally, that arrangement causes all of the light from the light emitters to either be absorbed by the high opacity filler material, or pass up through an optional diffuser, a polarizer, and then through a low opacity coating that serves to protect the polarizers. In practice, at least 45% of light passing out of the device passes through a polarizer, more preferably at least 75% or even at least 90% of light passing out of the device passes through a polarizer. A diffuser is included under the polarizer.