Optical Resolution Target Assembly for Multi-Wavelength Testing
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Solution Overview
Problem
Existing optical resolution targets are cumbersome and costly when testing optical devices that operate over a wide range of wavelengths, as they require multiple targets with different properties for various light spectrums, leading to complexity, time-consuming, and error-prone testing processes.
Innovation Solution
An optical resolution target assembly that includes a temperature-controlled target with distinct emissivity for substrate and patterns, capable of emitting light beams at different wavelengths, allowing for efficient testing across a wide range of wavelengths without the need for mechanical changes, using a single target that can differentiate between thermal infrared and visible light spectrums.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate optical targets are used to test different wavelength ranges, then the testing can cover a wide spectrum, but the device complexity and testing process become cumbersome and time-consuming
Solution Approach 1:
The patent combines multiple optical targets with different spectral properties into a single integrated resolution target assembly. This assembly includes multiple targets mounted on a common support structure, allowing all targets to be tested simultaneously in one measurement, thereby eliminating the need for multiple separate testing apparatus and reducing operational complexity
Solution Approach 2:
The resolution target assembly is designed to serve multiple functions by incorporating targets that respond to different wavelength ranges (visible, infrared, ultraviolet) within a single device. This multi-functional design allows a single testing apparatus to evaluate optical resolution across the entire electromagnetic spectrum without requiring separate specialized targets for each wavelength range
2Measurement precision
If multiple separate optical targets are used for different light spectrums, then each target can be optimized for its specific spectrum, but the testing process becomes time-consuming requiring removal and insertion of targets
Solution Approach 1:
The patent prepares multiple spectral targets in advance and mounts them simultaneously on a single support structure before the testing begins. This preliminary arrangement ensures that all targets are ready for measurement without requiring time-consuming removal and insertion operations during the actual testing process
Solution Approach 2:
By merging multiple targets into a single assembled unit that remains fixed during testing, the system eliminates the time loss associated with physically exchanging targets between measurements, while still maintaining the ability to measure different spectral ranges through the integrated design
3Measurement precision
If multiple separate optical targets are used, then each target can be optimized for specific wavelengths, but the overall cost of the testing system increases
Solution Approach 1:
The patent consolidates multiple specialized targets into a single manufactured assembly, reducing the total number of separate components needed. This merging approach lowers manufacturing costs by reducing inventory requirements, simplifying assembly procedures, and decreasing the need for multiple specialized mounting structures and adjustment mechanisms
Solution Approach 2:
The integrated target assembly provides universal testing capability across multiple wavelength ranges, eliminating the need to purchase and maintain separate specialized targets for each spectrum. This multi-functional design reduces overall system cost while maintaining wavelength-specific measurement accuracy through the combined targets
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 straightforward, simple, and cost-effective testing of optical devices across multiple wavelengths by using a single target assembly, reducing complexity and errors, and allowing for simultaneous or sequential operation over various spectral regions.
Implementation Method 1
The target emits a first light beam at a first wavelength in response to being heated
Implementation Method 2
The temperature adjuster heats and/or cools the target. For example, the target temperature controller controls activation of a heating element based on a detected temperature of the target
Implementation Method 3
The support plate (such as a high thermal conductivity plate) disposed between the target and the target temperature controller. The support plate evenly distributes heat onto or into the target
Data Source
AI summary
A system for testing optical resolution of an optical device includes an optical resolution target assembly including a target that is heated. The target emits a first light beam at a first wavelength in response to being heated. The first light beam has first and second components that are discernible from one another when the target is heated. The system may also include an illuminator that emits light at a second wavelength that differs from the first wavelength onto the target. The target emits a second light beam having third and fourth components that are discernible from one another when the illuminator emits light at the second wavelength onto the target.