Development Of Small Laser Resonator Assembly System Based On Image Processing

Gyroscope is a generalized inertial sensor based on inertia principle in the field of navigation.Ring laser gyro is an important branch of the optical gyroscope based on optical principle.The small laser gyro is the smallest volume product in the laser gyroscope series.The small laser gyro is a small ideal tactical inertial device,it has the characteristics of low energy consumption,very low cost,small size and light weight.In China,the research of the small laser gyro is in the initial stage.Manual operation is adopted in the laser resonator assembly,it has natural defects and bottlenecks for the assembly of small size parts,and it can not be solved by improving operation experience and skills.Therefore,automatic assembly is the development demand and important direction of the small laser gyro manufacturing technology.By analyzing the assembly characteristics of the small laser resonator,the optical imaging system and the CCD information acquisition system have been built to obtain the digital signal.The positioning accuracy of optical system and the accuracy of imaging system are analyzed.It can filter interference,protrude characteristics,and can obtain the center point of the small mirror assembly positioning by digital image processing and computation using computer LabVIEW software.An electric multi-position mobile platform has been set up to drive the small mirror to locate the optical center of the small cavity for positioning and assembling,which is controlled by computer LabVIEW software.At last,the system that has the function is debugged and optimized to solve the fault,improve the function and the performance.In this paper,the small laser resonator assembly system based on image processing can assemble the small mirrors accurately and automatically to the small cavity.Which has improved the cleanliness and consistency of the assembly process,and has released the manual labour to some degree,and has improved production efficiency.It has accumulated experience for the research of the small laser gyro.