Large laser gyroscope and optical path monitoring system and monitoring method thereof, and optical path correction system and correction method

By constructing a positioning optical path monitoring system in a large laser gyroscope, and using an external reflective reference mirror and calibration mechanism of the angular cavity to monitor changes in the position of the light spot, the optical path mismatch caused by the attitude deflection of the angular cavity is solved, enabling rapid recovery and reducing maintenance costs, thus improving the engineering reliability of the laser gyroscope.

CN122149530APending Publication Date: 2026-06-05HUNAN 208 ADVANCED TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN 208 ADVANCED TECH CO LTD
Filing Date
2026-04-01
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

During operation, the angular cavity of a large laser gyroscope is prone to slight but not negligible deflection, which prevents the ring cavity from forming a stable loop. Existing technologies lack effective monitoring methods, and optical path recovery is complex and expensive.

Method used

Design an optical path monitoring system. Construct a positioning optical path by placing an external reflective reference mirror and calibration mechanism on the cavity, monitor the change in the position of the light spot caused by the change in the cavity's attitude, and realize the rapid recovery of the optical path through a two-dimensional angle adjustment device.

Benefits of technology

It enables intuitive monitoring and rapid recovery of diagonal cavity attitude changes, reduces optical path maintenance costs, improves engineering practicality and reliability, and is applicable to laser gyroscopes of different sizes and structural forms.

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Abstract

The application discloses a large laser gyroscope and an optical path monitoring system and a monitoring method thereof, and an optical path correction system and a correction method thereof. The optical path monitoring system comprises a light source structure, a plurality of reflecting reference mirrors and a plurality of calibration mechanisms. The plurality of reflecting reference mirrors and the plurality of calibration mechanisms are in one-to-one correspondence with a plurality of corner cavities of the large laser gyroscope. The reflecting reference mirrors are fixed on the corresponding corner cavities. The light source structure is used for emitting positioning light to one of the reflecting reference mirrors. The positioning light is reflected by the plurality of reflecting reference mirrors in sequence, so that the positioning light forms a monitoring light path between the plurality of reflecting reference mirrors. The plurality of calibration mechanisms are located on the monitoring light path. The calibration mechanism is located in front of the corresponding reflecting reference mirror along the monitoring light path. The calibration mechanism can be passed through by the positioning light, and can calibrate the spot position of the positioning light reflected by the corresponding reflecting reference mirror. The application has the advantages of simple structure, controllable cost, intuitive reflection of the corner cavity posture change of the large laser gyroscope and realization of rapid recovery of the optical path.
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