Thermally Stable Enclosure for Laser Beam Alignment
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Solution Overview
Problem
Existing optical systems for fluorescent analysis of flow cells suffer from measurement errors due to temperature-induced fluctuations in laser beam alignment and signal power, leading to inaccuracies in optical measurements.
Innovation Solution
A compact, thermally stable multi-laser system with a thermally conductive enclosure and temperature controller maintains laser beam alignment and intensity over a range of ambient temperatures, using high thermal conductivity materials and beam positioning systems to stabilize the laser beams and optics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical systems are used for fluorescent analysis, then the system structure is simple, but temperature-induced fluctuations cause measurement errors and reduce measurement precision
Solution Approach 1:
A thermally conductive intermediary material is introduced between the laser source and the optical components to mediate heat transfer. This material acts as a thermal bridge that conducts heat away from sensitive optical components, stabilizing their temperature and preventing temperature-induced alignment fluctuations and measurement errors.
Solution Approach 2:
The thermal conductivity parameter of the enclosure material is changed from conventional low-conductivity materials to high-conductivity materials. This parameter change enables efficient heat dissipation from the laser beams and optical components, maintaining stable operating temperatures and eliminating temperature-related measurement precision degradation.
2Reliability
If laser beams are used for illumination, then the illumination intensity is high, but temperature fluctuations cause beam alignment instability and reduce reliability
Solution Approach 1:
A thermally conductive intermediary material is introduced between the laser source and the optical components to mediate heat transfer. This material acts as a thermal bridge that conducts heat away from sensitive optical components, stabilizing their temperature and preventing temperature-induced alignment fluctuations and measurement errors.
Solution Approach 2:
The patent replaces active mechanical alignment stabilization systems with a passive thermal management system. Instead of using motors or actuators to actively adjust beam alignment, the system uses thermally conductive materials to passively maintain stable temperatures, thereby eliminating the need for complex mechanical stabilization mechanisms.
3Volume of moving object
If compact multi-laser systems are implemented, then the system size is reduced, but thermal management becomes more challenging and may affect measurement precision
Solution Approach 1:
Multiple laser sources and their thermal management functions are merged into a single integrated compact enclosure. The thermally conductive material serves as a common thermal management structure for all laser beams, consolidating what would otherwise require separate thermal management systems and achieving space-efficient design without compromising measurement precision.
Solution Approach 2:
The thermal conductivity parameter of the enclosure material is changed from conventional low-conductivity materials to high-conductivity materials. This parameter change enables efficient heat dissipation from the laser beams and optical components, maintaining stable operating temperatures and eliminating temperature-related measurement precision degradation.
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
The solution ensures accurate and stable optical measurements by minimizing temperature-induced fluctuations and pointing errors, improving the reliability of laser-induced fluorescence and spectroscopic analysis.
Implementation Method 1
The thermally stable enclosure substantially comprises a material with high thermal conductivity of at least 5 W/(m K)
Implementation Method 2
The temperature controller is configured to control the temperature of the thermally stable enclosure and to maintain the alignment of the focused laser beams to the flow cell over a range of ambient temperatures
Data Source
AI summary
Various embodiments of a multi-laser system are disclosed. In some embodiments, the multi-laser system includes a plurality of lasers, a plurality of laser beams, a beam positioning system, a thermally stable enclosure, and a temperature controller. The thermally stable enclosure is substantially made of a material with high thermal conductivity such as at least 5 W/(m K). The thermally stable enclosure can help maintain alignment of the laser beams to a target object over a range of ambient temperatures. Various embodiments of an optical system for directing light for optical measurements such laser-induced fluorescence and spectroscopic analysis are disclosed. In some embodiments, the optical system includes a thermally conductive housing and a thermoelectric controller, a plurality of optical fibers, and one or more optical elements to direct light emitted by the optical fibers to illuminate a flow cell. The housing is configured to attach to a flow cell.