Recently, the Changchun Institute of Optics, Fine Mechanics and Physics of the Chinese Academy of Sciences broke through the key technology of the liquid crystal adaptive system of the large-diameter visible light imaging telescope. This technology makes use of the advantages of the tens of thousands of pixels of the liquid crystal corrector to effectively make up for the shortcomings of the low density of the drive unit of the adaptive optical system, which is difficult to match the large aperture visible light imaging telescope of more than 4 meters. important meaning. The research team of the Changchun Institute of Optoelectronics has proposed a series of innovative solutions to the problems of the current liquid crystal system energy utilization rate of less than 15% and the closed-loop correction frequency of less than 30Hz. It has invented an open-loop controlled dual-corrector adaptive optical path suitable for large-scale integration The circuit-driven millisecond-level rapid response liquid crystal corrector preparation technology and the liquid crystal corrector-based turbulent wavefront accurate reconstruction and fast compensation technology effectively solve the problem of polarized light loss, and solve the DSP data processor integration and liquid crystal system. The problem of adaptation. It has broken through the bottleneck of low energy utilization rate and low correction frequency, and has authorized 13 invention patents. The new investigation shows that the achievement can match the 5 meter aperture visible light telescope, and the comprehensive performance of energy efficiency and correction speed exceeds the research and development level of the international liquid crystal adaptive system. At present, this research and development achievement has been listed as a matching adaptive system for a 2 meter visible light imaging telescope. After successful development, the telescope will become the world's first liquid crystal adaptive telescope and the largest visible light tracking imaging telescope in China. If this result is extended to an astronomical telescope with a diameter of 10 meters, it will be of great significance to the observation and research of sunspot activity, star formation and decay process.
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