Non-periodic Optical Element for 3D Holographic Image Expansion
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Solution Overview
Problem
Existing 3D holographic image technologies are limited by the number of pixels in spatial light modulators, restricting the size and viewing angle of 3D images, and require complex data processing and costly systems to increase pixel control or use random scattering layers with high computational loads.
Innovation Solution
A 3D holographic image apparatus and method using a spatial light modulator in conjunction with a non-periodic optical element, such as a pinhole array or microlens array, to expand the space-bandwidth product by modulating light in multiple directions, allowing for larger images and wider viewing angles without increasing pixel count or computational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of pixels in spatial light modulator is increased to improve image size and viewing angle, then the space-bandwidth product is improved, but computational complexity and cost are increased
Solution Approach 1:
The patent introduces a non-periodic optical element as an intermediary component between the spatial light modulator and the image formation process. This optical element with predetermined non-periodic transmission or reflection characteristics acts as a mediator that expands the space-bandwidth product without requiring increases in pixel count, thereby avoiding the associated computational complexity and cost increases
Solution Approach 2:
The patent changes the optical parameters by introducing a non-periodic optical element with specific non-periodic transmission or reflection characteristics. This parameter change in the optical system allows expansion of the space-bandwidth product through optical rather than computational means, resolving the contradiction between performance improvement and computational complexity
2Adaptability or versatility
If the number of pixels in spatial light modulator is increased to improve image size and viewing angle, then the space-bandwidth product is improved, but the cost is increased
Solution Approach 1:
The non-periodic optical element serves as a cost-effective intermediary that achieves space-bandwidth product expansion through optical design rather than expensive high-pixel-count spatial light modulators, thereby reducing manufacturing cost while maintaining improved adaptability
3Adaptability or versatility
If spatial multiplexing technology is used to reproduce single 3D image using many spatial light modulators, then the space-bandwidth product is improved, but device complexity is increased
Solution Approach 1:
The patent merges the functions of multiple spatial light modulators into a single spatial light modulator combined with a non-periodic optical element. This consolidation achieves the same space-bandwidth product improvement as spatial multiplexing but with reduced physical driving system complexity by eliminating the need for multiple modulators and their coordination
Solution Approach 2:
The non-periodic optical element acts as an intermediary that enables a single spatial light modulator to achieve the functional equivalent of multiple spatial light modulators, thereby improving space-bandwidth product without increasing physical driving system 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
Enables the formation of 3D holograms with increased space-bandwidth product, allowing for larger images and wider viewing angles without the need for complex multiplexing systems or random scattering layers, reducing implementation costs and computational loads.
Implementation Method 1
a non-periodic optical element configured to modulate incident light by refracting, diffracting or reflecting the direction of the incident light in a plurality of directions
Implementation Method 2
a non-periodic optical element configured to modulate incident light by refracting, diffracting or reflecting the direction of the incident light in a plurality of directions
Implementation Method 3
a non-periodic optical element configured to modulate incident light by refracting, diffracting or reflecting the direction of the incident light in a plurality of directions
Data Source
AI summary
Disclosed herein are an apparatus and method for forming a 3D holographic image using non-periodically structured optical elements. The 3D holographic image apparatus includes a light source configured to radiate light, a spatial light modulator configured to modulate the light projected by the light source, and a non-periodic optical element configured to modulate incident light by refracting, diffracting or reflecting the direction of the incident light in a plurality of directions when the light modulated by the spatial light modulator is incident. A 3D holographic image may be formed based on the light modulated by the non-periodic optical element.