Petal Spatial Light Modulation for Filter-Free Low-Noise Holography

Solution Overview

Problem

Holographic displays face challenges in reducing noise without the use of a filtering optical system, which limits their size, weight, thinness, and mobility.

Innovation Solution

An active complex spatial light modulation apparatus that uses petal patterns to divide a complex plane into three phase sections, allowing for simultaneous modulation of the phase and amplitude of light, enabling noise-free image display without a filtering optical system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a filtering optical system is used to remove noise from holographic display, then image quality is improved, but device size and weight increase

Engineering Contradiction:

Improveimage qualityVSAvoiddevice weight

Core Design Contradiction:

Measurement precisionVSWeight of stationary object

Solution Approach 1:

The patent extracts and removes the filtering optical system from the holographic display apparatus, achieving noise-free image display through alternative means (digital processing or algorithmic noise removal) rather than physical optical filters, thereby reducing device weight and complexity while maintaining image quality

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical/optical filtering system with a non-mechanical approach (digital signal processing, computational methods, or software-based noise removal algorithms), eliminating the need for physical filtering components and thereby reducing device weight and complexity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If a filtering optical system is used to remove noise from holographic display, then image quality is improved, but device complexity increases

Engineering Contradiction:

Improveimage qualityVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts and removes the filtering optical system from the holographic display apparatus, achieving noise-free image display through alternative means (digital processing or algorithmic noise removal) rather than physical optical filters, thereby reducing device weight and complexity while maintaining image quality

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical/optical filtering system with a non-mechanical approach (digital signal processing, computational methods, or software-based noise removal algorithms), eliminating the need for physical filtering components and thereby reducing device weight and complexity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If a filtering optical system is used to remove noise from holographic display, then image quality is improved, but device portability decreases

Engineering Contradiction:

Improveimage qualityVSAvoiddevice mobility

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent extracts and removes the filtering optical system from the holographic display apparatus, achieving noise-free image display through alternative means (digital processing or algorithmic noise removal) rather than physical optical filters, thereby reducing device weight and complexity while maintaining image quality

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical/optical filtering system with a non-mechanical approach (digital signal processing, computational methods, or software-based noise removal algorithms), eliminating the need for physical filtering components and thereby reducing device weight and complexity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

The apparatus allows for clear, ultra-low noise 3-D image display by representing input light as three-phase amplitude values, effectively eliminating the need for a filtering optical system, thereby enhancing the display's compactness, lightness, and mobility.

Implementation Method 1

detecting light input to a center point of the petal antenna and modulating the input light into three-phase amplitude values corresponding to three phase sections divided from a complex plane through the petal patterns

Methodology Applied

Scientific EffectLight modulation: Phase Modulation

Data Source

PatentEP3933464B1Active complex spatial light modulation apparatus for an ultra-low noise holographic display

Publication Date: 2024.10.30 SAMSUNG ELECTRONICS CO LTD

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AI summary

Disclosed are an active complex spatial light modulation method and apparatus for an ultra-low noise holographic display. The active complex spatial light modulation apparatus includes a substrate and a petal antenna including three petal patterns arranged on the substrate, dividing a complex plane into three phase sections, and modulating the input light into three-phase amplitude values corresponding to the phase sections. The petal antenna may have a point symmetry shape based on the center point of the petal antenna.