Hologram Pattern Generation Using Reference Depth Plane
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Solution Overview
Problem
Current methods for generating hologram patterns require a significant amount of computation due to the need to represent phase information in light waves, making them computationally intensive.
Innovation Solution
The apparatus and method involve setting a reference depth plane closer to the 3D object than the hologram plane, allowing for reduced computation by generating a first hologram pattern in this plane and then scaling it to the hologram plane, thereby minimizing the computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a hologram pattern is generated by computing point source holograms or Fresnel zone plates for each point of a 3D object, then the hologram pattern accurately represents phase information of light, but a great amount of computation is required
Solution Approach 1:
The patent divides the hologram generation process into two independent stages: (1) generating a first hologram pattern at a reference depth plane, and (2) generating the final second hologram pattern at the target hologram plane using the first pattern as input. This segmentation allows each stage to operate with reduced computational complexity, avoiding the need to compute all point source holograms directly at the final plane.
Solution Approach 2:
The patent performs preliminary computation by generating the first hologram pattern at an intermediate reference depth plane before generating the final hologram pattern. This preliminary action reduces the computational burden by working with smaller data sets and simpler calculations at the intermediate stage, which are then scaled to the final configuration.
2Productivity
If the reference depth plane is set closer to the 3D object than the hologram plane, then the amount of computation is reduced, but the distance optimization must be maintained to ensure accuracy
Solution Approach 1:
The patent changes the depth parameter by introducing an intermediate reference depth plane positioned between the 3D object and the final hologram plane. This parameter change allows computation to be performed at a more favorable distance from the object, reducing computational complexity while maintaining accuracy through the two-stage generation process.
Solution Approach 2:
The reference depth plane acts as an intermediary between the 3D object and the final hologram plane. This intermediary plane enables the computation to be performed at optimized distances, reducing the computational burden while preserving the accuracy of phase information through the intermediate representation.
Data Source
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AI summary
Provided is an apparatus and method for generating a hologram pattern with a reduced amount of computation. The apparatus includes a reference depth plane setting unit (110) configured or having a capacity to set a reference depth plane (210) using data associated with a three-dimensional (3D) object (200), a first hologram pattern generating unit (120) configured to generate a first hologram pattern (211, 212) corresponding to the 3D object (200,201,202) in the reference depth plane (210), and a second hologram pattern generating unit (130) configured to generate a second hologram pattern (221,222) in a hologram plane (220) using the first hologram pattern.