Binary Pattern Transformation Display for Holographic Computation
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Solution Overview
Problem
Current computer-generated hologram (CGH) display technologies face challenges in reducing computational load, power usage, thermal issues, pixel size, and emission area/eyebox, particularly due to the need for small pixels and high computational complexity.
Innovation Solution
The proposed solution involves a display device with a binary pixel structure that incorporates a light diffraction material with a variable refractive index. This material modifies binary patterns formed by light source pixels, allowing for the creation of different output lights using holographic interference principles, thereby reducing computational requirements and enhancing display efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traditional CGH computation methods are used, then holographic image quality is achieved, but computational load and power consumption are excessively high
Solution Approach 1:
The patent replaces traditional computational methods with optical diffraction-based computation. The binary pixel patterns are optically processed through diffractive optical elements to generate holographic images, substituting electronic computation with optical physics-based processing, thereby dramatically reducing computational load and power consumption
Solution Approach 2:
The patent transforms the continuous computational problem into a discrete binary pattern problem. By quantizing pixel values to binary states (0 or 1) and using diffractive optical elements with corresponding binary transmission functions, the system achieves holographic imaging with simplified computation and reduced power requirements
2Speed
If pixel size is reduced to achieve acceptable field of view, then diffraction angle range increases, but manufacturing precision and device complexity become extreme challenges
Solution Approach 1:
The patent segments the continuous pixel structure into binary discrete elements. By dividing each pixel into binary sub-elements (transmissive or opaque regions), the system achieves precise diffraction control without requiring extremely small continuous pixel dimensions, thereby reducing manufacturing precision requirements while maintaining wide diffraction angle range
Solution Approach 2:
The patent applies different transmission properties to different regions within binary pixels. By creating local variations in transmission function (binary patterns) across the pixel array, the system achieves precise spatial control of diffracted light with relaxed pixel size constraints, as each binary region can be independently optimized
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 approach significantly reduces computational load and power consumption while enabling smaller pixel sizes and improved emission area/eyebox, thus addressing key challenges in CGH display technologies.
Implementation Method 1
the first layer comprises a light diffraction material having variable refractive index across the binary pixel. The light diffraction material is configured to cause a first modification of a first binary pattern to output a first light
Implementation Method 2
The light from the first source pixel and the light from the second source pixel are combined using holographic interference principles, such that the third output light has different visual characteristics from the first output light and the second output light
Data Source
AI summary
A display device includes a display array comprising a plurality of binary pixels, each binary pixel comprises at least one light source with two light source modulating pixels configured to form three or more binary patterns. A device further includes a first layer above the at least two light source modulating pixels, the first layer comprises a light diffraction material across the binary pixel, wherein the light diffraction material is configured to cause a first modification of a first binary pattern to output a first light, cause a second modification of a second binary pattern to output a second light, and cause a third modification of a third binary pattern to output a third light, wherein the first, second and third output light have substantially different visual characteristics.