Optical Element Testing with Reflection and Transmission Alignment

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Solution Overview

Problem

Existing methods for testing optical elements, such as waveguides in image transferring devices, are limited in their ability to accurately assess the quality of electromagnetic radiation transfer due to the small and complex structure of these devices, which complicates the propagation of optical signals.

Innovation Solution

A method and apparatus that allows for testing optical elements by positioning a projecting device and a detecting device on the same side or opposite sides of the sample, utilizing a movable system and alignment arrangement to perform reflection and transmission measurements, enabling precise alignment and measurement from multiple angles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a detecting device is positioned on the same side as the projecting device to perform reflection measurement, then the measurement can be performed from a convenient location, but the measurement precision is reduced compared to transmission measurement

Engineering Contradiction:

Improveconvenience of measurement locationVSAvoidquality assessment accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The detecting device is made movable between different positions relative to the sample. It can be positioned on the same side as the projecting device for reflection measurements or on the opposite side for transmission measurements. This dynamic repositioning allows the system to adapt between convenience (reflection mode) and precision (transmission mode) based on measurement requirements.

Inventive Principle:

Principle #15Dynamics

2Measurement precision

If the detecting device is positioned on the opposite side of the sample for transmission measurement, then the measurement precision is improved, but the device complexity increases due to the need for movable positioning systems

Engineering Contradiction:

Improvequality assessment accuracyVSAvoidalignment arrangement complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The detecting device serves multiple functions by being able to operate from different positions. The same detecting device is used for both reflection measurements (when positioned on the same side as the projecting device) and transmission measurements (when positioned on the opposite side). This multi-functionality reduces the need for multiple separate detecting devices while maintaining high measurement precision.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If comprehensive testing from multiple locations and sides is performed, then the quality assessment accuracy is improved, but the testing time increases

Engineering Contradiction:

Improvecomprehensive quality assessmentVSAvoidtesting duration

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary positioning and alignment of the detecting device before measurements are taken. The alignment arrangement pre-establishes the correct positions for both reflection and transmission measurements, allowing the detecting device to be quickly moved between positions without time-consuming realignment during the actual measurement process.

Inventive Principle:

Principle #10Preliminary action

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 enhances the accuracy and efficiency of testing optical elements by allowing comprehensive quality assessment from different locations and sides, facilitating faster and more cost-effective mass production.

Implementation Method 1

the detecting device, when it is on the opposite side of the sample, can receive electromagnetic radiation reflected by the sample

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 2

the detecting device can receive electromagnetic radiation transferred by the sample when the detecting device is on one side of the sample

Methodology Applied

Scientific EffectTransmission:

Data Source

PatentUS20250341445A1Method and apparatus for testing an optical element

Publication Date: 2025.11.06 OPTOFIDELITY

AI summary

The invention relates to a method comprising detecting a location of a sample (20); performing at least one of a reflection measurement and a transmission measurement, wherein the reflection measurement comprises: locating a projecting device and a detecting device (40) on a same side of the sample (20); detecting electromagnetic radiation reflected by the sample (20); and the transmission measurement comprises: locating the projecting device and the detecting device (40) on opposite sides of the sample (20); and detecting electromagnetic radiation transferred by the sample (20); and wherein the method further comprises using the detected electromagnetic radiation to form a test result. The invention also relates to an apparatus (1) for implementing the method.