Multispectral Harmonisation Device for Optronic Channel Alignment
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Solution Overview
Problem
Existing optronic systems face challenges in harmonizing optical channels across various spectral bands, especially in non-standardized environments, requiring precise alignment that is difficult to maintain and often results in performance degradation when adjusting multiple channels simultaneously.
Innovation Solution
A multispectral harmonization device using directional optical sources and a parabolic mirror with an alignment mask to create a multispectral collimated beam, allowing simultaneous adjustment of optical channels across different spectral bands with precise positioning and orientation, facilitated by optical detection means for validation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If spectral overlap of detectors is used for harmonisation, then alignment constraints are reduced, but the ability to simultaneously adjust multiple optical channels in far-apart spectral bands is limited and performance degradation occurs
Solution Approach 1:
The patent employs a single collimated beam that serves multiple spectral bands simultaneously, making the harmonisation device universal across different spectral ranges. The beam is made multispectral by combining emissions from different wavelength sources, allowing one beam to adjust multiple optical channels in far-apart spectral bands without performance degradation
Solution Approach 2:
A spectral combining element acts as an intermediary to merge optical beams from multiple wavelength sources into a single collimated multispectral beam. This mediator enables the system to handle multiple spectral bands through a unified optical path, resolving the limitation of spectral overlap methods
2Measurement precision
If conventional harmonisation devices are used in non-standardised environments, then alignment precision is maintained, but the devices cannot meet alignment constraints in on-site conditions
Solution Approach 1:
The patent changes the fundamental parameter of the harmonisation beam from monospectral to multispectral, and from non-collimated to collimated. This parameter transformation allows the device to maintain precision while adapting to field conditions, as the collimated multispectral beam can be detected across multiple spectral bands by different detectors simultaneously
Solution Approach 2:
The harmonisation beam is segmented into multiple wavelength components that can be independently detected by different detectors while traveling along the same optical path. This segmentation allows each detector to verify alignment in its specific spectral band without requiring separate alignment procedures
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 efficient and precise alignment of multiple optical channels across various spectral bands in non-standardized environments, maintaining performance while simplifying on-site maintenance and reducing costs.
Implementation Method 1
a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by said optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam
Data Source
AI summary
A multispectral harmonisation device intended to align the optical channels of an optronic system that includes at least two directional optical sources emitting respective optical beams of various wavelengths belonging to various spectral bands and comprises a parabolic mirror and means for positioning and orienting each of the optical sources so that each of the optical beams emitted by the optical sources passes through the optical focus of the parabolic mirror before being reflected by said parabolic mirror so that all the optical beams form, by reflection on the parabolic mirror, a multispectral collimated beam.