Micro-Raman Optical Axis Adjustment With Two-Actuator Member

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Solution Overview

Problem

Existing micro-Raman spectroscopic devices require precise optical axis adjustment, which is cumbersome and often necessitates opening the device housing, and involves high motor costs and skill requirements, leading to bulkiness and costliness.

Innovation Solution

A micro-Raman spectroscopic device with an angle adjustment member comprising two actuators and a center bar, allowing for optical axis adjustment without opening the housing, using actuators with piezoelectric elements to achieve fine adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual optical axis adjustment method is used, then adjustment can be performed, but device housing must be opened and adjustment skill is required

Engineering Contradiction:
Improveoptical axis adjustmentVSAvoidhousing opening requirement
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system performs optical axis adjustment automatically using a motor to rotate the optical element holder, eliminating the need for manual intervention and housing opening. The adjustment process is self-executing based on control signals, making the system serve itself without external operator involvement.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual mechanical adjustment screw system is replaced with an automated motor-driven rotation mechanism. The motor substitutes the manual mechanical operation, enabling precise angular adjustment through electrical control rather than manual screw manipulation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Extent of automation

If electric adjustment method with motor is used, then automated adjustment is achieved, but motor size and cost increase

Engineering Contradiction:
Improveoptical axis adjustmentVSAvoidmotor size
Core Design Contradiction:
Extent of automationVSWeight of stationary object

Solution Approach 1:

The system changes the rotational position parameter of the optical element holder through motor control. By adjusting the angular position parameter in small increments, precise optical axis alignment is achieved without requiring a large or powerful motor, thus keeping the motor compact and cost-effective.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If high precision motor is used for optical element adjustment, then adjustment accuracy is improved, but device becomes bulky and costly

Engineering Contradiction:
Improveoptical axis adjustment accuracyVSAvoiddevice size and cost
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The system dynamically adjusts the optical element holder's rotational position through motor control, enabling precise optical axis alignment. The dynamic adjustment capability allows the system to achieve high precision without requiring over-engineered static components, thus avoiding increased device size and cost.

Inventive Principle:
Principle #15Dynamics

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 optical axis adjustment within the device without housing opening, reducing device size and cost, and allowing for precise adjustments without excessive burden on the operator.

Implementation Method 1

using actuators with piezoelectric elements to achieve fine adjustments

Methodology Applied
Scientific EffectPiezoelectric effect: Piezoelectric Effect

Data Source

PatentUS20250277741A1Microscopic raman spectroscopic device, and angle adjusting member for optical element
Publication Date: 2025.09.04 SHIMADZU CORP
  • US20250277741A1 patent drawing
  • US20250277741A1 patent drawing
  • US20250277741A1 patent drawing

AI summary

Provided is an angle adjustment member for an optical element, the angle adjustment member including: two actuators; and a center bar of which a tip portion is movable in 360°. Furthermore, in order to provide a micro-Raman spectroscopic device capable of performing adjustment of an optical axis without opening a device housing and capable of further performing fine adjustment of the optical axis with out imposing an excessive burden on an adjuster, at least one of an incident light optical element and a Raman light optical element has the angle adjustment member.