Computer-Generated Hologram Splice Planes High Resolution
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Solution Overview
Problem
Existing computer-generated hologram technologies face limitations in achieving high resolution when recording objects with finer structures, as the resolution is constrained by the width of the unit areas on the recording medium.
Innovation Solution
A method involving the division of an original image and recording plane into multiple linear areas, with periodically arranged point or line segment light sources emitting different wavelengths, and computation of amplitude and phase information at specific points to record interference fringes or groove depths, allowing for higher resolution reconstruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the width of unit areas on the recording medium is reduced to record finer structures, then the resolution is improved, but the manufacturing complexity and difficulty increase significantly
Solution Approach 1:
The original image and recording plane are divided into multiple linear areas by parallel sections. Each linear area contains point light sources that are processed independently, allowing the complex task of recording high-resolution images to be segmented into manageable units that can be processed and recorded separately while maintaining overall image quality.
Solution Approach 2:
The patent transitions from recording entire unit areas to recording only specific points (point light sources) within those areas. This dimensional reduction from area-based recording to point-based recording simplifies the manufacturing process while achieving higher effective resolution, as points can be positioned with greater precision than area boundaries.
2Manufacturing precision
If the density of point light sources is increased to achieve higher resolution, then the image detail is improved, but the computation and recording complexity increases
Solution Approach 1:
Instead of uniformly processing all points in each unit area, the patent applies local quality by identifying and processing only the point light sources that carry actual image information. Each point light source is treated individually with computations tailored to its specific contribution to the final image, optimizing computational resources while maintaining high resolution.
Solution Approach 2:
The patent extracts only the essential elements (point light sources) from each linear area for processing, separating them from the background and non-essential information. This extraction approach reduces computation complexity by focusing only on the critical data points that contribute to image reconstruction, rather than processing entire areas uniformly.
3Reliability
If multiple wavelengths are assigned to different slice planes for full-color reconstruction, then the color reproducibility is improved, but the device structure becomes more complex
Solution Approach 1:
The patent employs periodic assignment of wavelengths to slice planes, creating a repeating pattern where red, green, and blue wavelengths are systematically distributed across different planes. This periodic structure simplifies the overall hologram design by establishing a regular, predictable pattern that is easier to manufacture and process than irregular or random wavelength assignments, while still achieving full-color reconstruction.
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 enables the reconstruction of full-color images with significantly higher resolution, allowing for the recording of finer structures by increasing the density of point light sources, while maintaining color reproducibility.
Implementation Method 1
compute amplitude information and phase information about object light on individual computation points... recording on a recording medium amplitude information and phase information found on the individual computation points
Data Source
AI summary
A recording plane of a computer-generated hologram that is capable of reconstructing a full-color image and achieving a high resolution is divided by a multiplicity of parallel sections in the horizontal direction to define a multiplicity of areas. Amplitude information and phase information corresponding to different wavelengths which vary periodically in a direction traversing the multiplicity of areas, is recorded in the recording medium. Information about the same portion of the original image is recorded in individual points belonging to the same area, and information about another corresponding portion of the original image is recorded in individual points belonging to another area.