Holographic 3D Optical Traps for Precision Manipulation

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Solution Overview

Problem

Existing optical traps, including single and line traps, have limited degrees of freedom and ease of use, restricting their applications due to low performance and inability to create precisely defined characteristics, especially in high-demand situations.

Innovation Solution

The method employs holographic techniques to create arbitrary three-dimensional optical trap configurations with specified optical characteristics by translating optical traps through an optical train's focal plane and acquiring a stack of two-dimensional images, using shape-phase holography to manipulate objects with substantial freedom.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If single light beams or line traps are used for optical manipulation, then the system is simple to operate, but the degrees of freedom and precision for high-performance tasks are limited

Engineering Contradiction:

Improveease of useVSAvoiddegrees of freedom

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The patent transitions from conventional two-dimensional optical trap arrangements to three-dimensional volumetric optical trap configurations. By using holographic techniques to create optical traps distributed in three-dimensional space, the system achieves substantially increased degrees of freedom while maintaining ease of operation through computer-controlled hologram generation and display.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If conventional optical traps are used, then the device complexity is low, but the precision and control over optical characteristics are insufficient for high-performance tasks

Engineering Contradiction:

Improvedevice complexityVSAvoidprecision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent replaces mechanical adjustment mechanisms with holographic optical manipulation. Instead of physically moving optical components to achieve precise trap positioning and configuration, the system uses computer-generated holograms displayed on spatial light modulators to dynamically control the position, shape, and optical characteristics of three-dimensional trap arrangements, achieving high precision without increased mechanical complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If holographic techniques are used to create 3D optical trap configurations, then the degrees of freedom and precision are substantially increased, but the device complexity increases

Engineering Contradiction:

Improvedegrees of freedomVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a multi-functional holographic optical trap system where a single apparatus can generate various three-dimensional trap configurations for different applications. The spatial light modulator and hologram generation software provide universal control over trap position, shape, and arrangement, allowing the same device to perform multiple functions (manipulating particles, cells, or objects in different 3D configurations) without requiring separate specialized equipment for each task.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 expands the facility and range of applications for optical traps by enabling precise manipulation of objects in three-dimensional space, enhancing their performance and versatility.

Implementation Method 1

Holographic techniques are used to modify individual trap wavefronts to establish pre-selected 3D structures

Methodology Applied

Scientific EffectHolography:

Implementation Method 2

Shape phase holography is used to create a pre-selected 3D intensity distribution

Methodology Applied

Scientific EffectShape phase holography:

Implementation Method 3

using single light beams to form an optical trap which applies optical forces from the focused beam of light to confine an object to a particular location in space

Methodology Applied

Scientific EffectOptical tweezers: Optical Tweezers

Data Source

PatentUS8472094B2Volumetric is imaging of a holographic optical traps

Publication Date: 2013.06.25 NEW YORK UNIV

AI summary

A method and system for manipulating object using a three dimensional optical trap configuration. By use of selected hologram on optical strap can be configured as a preselected three dimensional configuration for a variety of complex uses. The system can include various optical train components, such as partially transmissive mirrors and Keplerian telescope components to provide advantageously three dimensional optical traps.