3D Stereoscopic LED Display Polarization and Diffuser Design
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Solution Overview
Problem
Existing stereoscopic display systems fail to effectively recreate a real-world 3D visual experience on large formats like billboards and stadium jumbotrons, often causing viewer discomfort due to color-based segregation methods.
Innovation Solution
A 3D stereoscopic display system using large format light emitting diodes (LEDs) covered by two sheets of polarizing material, with a rear diffuser to enhance viewing and reduce glare, and polarizing eyewear for each eye to create separate views, allowing for improved 3D image perception without headaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color-based segregation methods are used to create 3D views, then viewing separation is achieved, but viewer comfort deteriorates causing headaches
Solution Approach 1:
The patent changes the parameter of light segregation from color-based (wavelength separation) to polarization-based (orientation separation). By using polarizing filters oriented at different angles (e.g., 0度和90度) instead of color filters, the system maintains effective view separation while eliminating the harmful effect of color distortion that causes viewer discomfort and headaches.
Solution Approach 2:
The patent replaces the optical mechanism of color filtering with a polarization mechanism. Instead of using colored lenses or filters to separate views, the system uses polarizing materials that exploit the polarization state of light, fundamentally changing the physical principle used for view segregation and thereby eliminating color-related visual discomfort.
2Reliability
If polarizing material is applied to LED displays, then 3D viewing experience is improved, but light intensity is reduced
Solution Approach 1:
The patent applies polarizing material selectively rather than uniformly across the entire display. By using polarizing filters only where necessary for view separation and combining them with high-intensity LED sources, the system achieves the required 3D viewing effect while minimizing overall light loss. The polarizing layers are optimized to transmit maximum light while maintaining polarization separation.
Solution Approach 2:
The patent employs composite optical structures combining polarizing materials with diffusers and high-intensity LED elements. This composite approach allows the system to maintain bright illumination while achieving effective polarization-based view separation, as the diffusers help distribute light evenly and the high-intensity LEDs compensate for the light absorbed by polarizing layers.
3Reliability
If multiple sheets of polarizing material are used, then view segregation is enhanced, but device complexity increases
Solution Approach 1:
The patent combines multiple functional layers (polarizing filters, diffusers, and LED elements) into an integrated display assembly. Rather than treating polarizing sheets as separate add-on components, the system merges them with the LED display structure itself, creating a unified device that achieves enhanced view segregation without proportionally increasing operational or structural complexity.
Solution Approach 2:
The polarizing materials in the patent serve multiple functions simultaneously: they provide view separation, reduce glare, and work with the LED light sources to create the 3D effect. This multi-functionality means that adding polarizing layers doesn't merely add a single function but accomplishes several objectives at once, thereby reducing the relative complexity increase.
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
Enables realistic 3D viewing experiences on large displays by segregating views using polarizing material and diffusers, reducing glare and pixilation, and allowing closer viewing distances without distortion.
Implementation Method 1
a first sheet of polarizing material for polarizing a first subset of the LEDs to form a first view of the 3D image, and a second sheet of polarizing material for polarizing the second subset of LEDs to form a second view of the 3D image
Implementation Method 2
a rear diffuser, disposed between the LED display and the first sheet of polarizing material
Implementation Method 3
a front diffuser, disposed in front of the second sheet of polarizing material, for reducing glare from external light sources
Data Source
AI summary
A three dimensional (3D) stereoscopic display system using large format light emitting diodes (LEDs) for displaying 3D image content. The apparatus comprises a grid of LEDs covered by two sheets of polarizing material, a first sheet of polarizing material for polarizing a first subset of the LEDs to form a first view of the 3D image, and a second sheet of polarizing material for polarizing the second subset of LEDs to form a second view of the 3D image. The sheets may be formed by cutting a plurality of openings substantially aligned with a corresponding subset of LEDs. For improved viewing, the apparatus may further comprise a rear diffuser, disposed between the LED display and the first sheet of polarizing material. Also for improved viewing, the apparatus may further comprise a front diffuser, disposed in front of the second sheet of polarizing material, for reducing glare from external light sources. Also an additional method of the application of individual polarizing buttons directly adhered to the individual LEDs incorporating an assembly key for maintaining the correct orientation of the polarizing material.