Flow gas type aerosol LIBS spectrum collecting device
By using a vacuum target chamber and a large-aperture concave mirror in the LIBS spectral collection device, the problem of reduced spectral signal-to-noise ratio caused by environmental gas interference was solved, achieving efficient and stable aerosol detection.
CN224066607UActive Publication Date: 2026-03-31CHONGQING JIANAN INSTR
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Patent Information
- Application Number
- CN202520600141.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-03-31
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Technical Problem
Interference from ambient gases affects the accuracy of LIBS spectral detection, leading to a decrease in signal-to-noise ratio, and poor stability, especially in open environments.
Method used
A flow-through aerosol LIBS spectral collection device is used, which utilizes a vacuum target chamber and a large-aperture concave mirror to reduce the influence of ambient gas noise and improve the signal-to-noise ratio through the spectral collector.
Benefits of technology
By reducing gas interference in a vacuum environment, enhancing spectral signal intensity, and improving the signal-to-noise ratio, rapid and reliable aerosol detection can be achieved.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a gas flow type aerosol LIBS (Laser-induced Breakdown Spectroscopy) spectrum collecting device which comprises a laser, a condensing lens, an aerosol container and a spectrum collector, a vacuum target chamber is arranged in the aerosol container, a plane lens I and a plane lens II are arranged on the aerosol container, laser emitted by the laser device can be focused in the vacuum target chamber through the condensing lens, the aerosol container is further provided with a spraying air nozzle communicated with the interior of the vacuum target chamber, the outer opening end of the spraying air nozzle is used for being connected with an aerosol spraying device, and the spraying axis of the inner opening end of the spraying air nozzle is orthogonal to the focusing optical axis of the condensing lens. A focusing lens is further arranged in the vacuum target chamber, the focusing lens enables gathered LIBS spectrums to penetrate through the plane lens II to the outside of the aerosol container, the spectrum collector is located outside the aerosol container, and the focusing lens is arranged in the aerosol container. And the collecting end of the spectrum collector is positioned on the focusing point of the focusing lens.
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