Dynamic Full 3D Display Using Double-Grating Diffraction
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Solution Overview
Problem
Current display technologies fail to provide dynamic, full three-dimensional images with high resolution and exceptional performance, especially on large screens, often requiring external accessories and being limited by low brightness and inefficient illumination methods.
Innovation Solution
An optical display system comprising a light source and an array of double grating elements that control the direction of light waves using electronically controllable gratings, allowing for high-efficiency, full-color, and dynamic three-dimensional displays without the need for complex collimating modules or external accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional display technologies are used, then displays can be manufactured with current technologies, but they fail to provide dynamic full three-dimensional images with high resolution and exceptional performance
Solution Approach 1:
The invention divides the display system into multiple light sources corresponding to different depth positions, with each light source projecting light through a specific aperture. This segmentation allows independent control of light from different spatial positions, enabling dynamic full three-dimensional imaging while maintaining manufacturability with current technologies.
Solution Approach 2:
The invention adds a depth dimension to traditional two-dimensional displays by positioning multiple light sources at different apertures. Each light source emits light through a specific aperture to create images at different depth positions, transforming the display from a single-plane 2D surface to a multi-depth 3D space while remaining compatible with existing manufacturing capabilities.
2Adaptability or versatility
If external accessories are used to achieve stereoscopic display, then stereoscopic effect can be achieved, but the device complexity increases and requires additional components
Solution Approach 1:
The invention merges the stereoscopic display capability directly into the display device itself by integrating multiple light sources and apertures within the display structure. This eliminates the need for external accessories like special eyeglasses, as the display inherently projects light from multiple depth positions through controlled apertures, reducing overall system complexity.
Solution Approach 2:
The display device provides its own stereoscopic capability through integrated light sources and apertures, making the system self-sufficient. The display structure itself performs the function of creating three-dimensional images without requiring external辅助设备, thereby reducing device complexity while maintaining full three-dimensional capability.
3Adaptability or versatility
If volumetric, holographic or integral displays are used, then three-dimensional images can be projected, but the displays are either not really dynamic or fail to project full three-dimensional display on wide screens
Solution Approach 1:
The invention implements dynamic control by independently modulating multiple light sources that correspond to different depth positions. Each light source can be activated or adjusted in real-time based on the desired three-dimensional image, allowing the display to dynamically change depth configurations and maintain full three-dimensional capability across wide screens with exceptional performance.
4Manufacturing precision
If color filters are placed in front of subpixels, then full color display can be achieved, but the brightness is decreased by a factor of three
Solution Approach 1:
The invention applies local quality by assigning specific color characteristics to individual light sources based on their depth positions. Each light source emits light with specific color properties appropriate for its depth, eliminating the need for color filters that would block most light. This approach maintains full color accuracy while preserving brightness, as each light source directly emits the required color without filtration losses.
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 high-performance, full-color, dynamic three-dimensional displays with unlimited brightness and efficient illumination, suitable for large screens and applications like HMDs, without the need for additional collimating modules.
Implementation Method 1
an array of at least two juxtaposed double grating elements, each of the elements comprising a first grating and a second grating... wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output light wave in a given direction
Data Source
AI summary
There is provided an optical system, including a light source, a control unit, and at least one juxtaposed double grating element, including a first grating and a second grating having grating functions, the gratings being spaced apart at a constant distance from each other, each of the two gratings having a center and at least one edge and comprising at least one sequence of a plurality of lines, wherein the spacing between the lines gradually changes from the center of the grating to the edges, the sequence of the plurality of lines of at least one of the gratings has a radial symmetry, and wherein the first grating diffracts a light wave from the light source towards the second grating and is further diffracted by the second grating as an output light wave in a given direction.