The hottest photoelectric is selected from the res

Selection of photoelectric grating load sensor: whether the load measurement accuracy meets or exceeds the standards of astm4 and iso7500/1 The load sensor should also consider: range, accuracy, repeatability, offset loading fault, nonlinearity, stable compensation range, temperature zero drift and sensitivity The automatic identification, calibration and zeroing of the load sensor greatly speeds up the experimental process and ensures the consistency and accuracy of the data In addition, progress has been made in the research of spectrometer aberration detection and correction

not long ago, the research team of Institute of optoelectronics, Chinese Academy of Sciences theoretically analyzed the influence of wavefront aberration on the spectral broadening and energy utilization of grating spectrometer, and proposed a solar grating spectral measurement method based on dual wavefront sensor adaptive optics technology

grating spectrometer is an important tool to study the basic physical reaction process of solar atmospheric explosion. It can be used to determine the thermodynamic parameters in the physical reaction process, such as magnetic field, temperature, pressure, element abundance, etc. As one of the important instruments in the back-end of the solar telescope, it is an effective means for scientific and applied research, such as scientific observation of solar activities and space weather prediction and prediction

the important business opportunities of color changing materials mainly come from the innovative research and development of crystals and metal sheets, colorless dyes, thermochromic liquid crystals, photochromic inks and other color changing materials

however, the spectral imaging performance of the grating spectrometer based on the ground-based solar telescope is seriously restricted by the dynamic wavefront aberration caused by atmospheric turbulence and the static aberration in the optical system, and its spectral resolution and energy utilization are limited, It is unable to give full play to the high spatial resolution, hyperspectral resolution and high light collection ability that large aperture ground-based solar telescopes should have. However, the traditional adaptive optics system is integrated into the telescope system, which can only correct the dynamic wavefront aberration of the beam before entering the grating spectrometer, and cannot realize the whole system aberration detection and correction

based on the current development status of the grating spectrometer of the ground-based solar telescope, combined with the advantages of adaptive optics technology of the Institute of optoelectronics, the main business income of the new material industry in the province has reached 1.5 trillion yuan. The research team of the Institute of Optoelectronics theoretically analyzed the impact of wavefront aberration on the spectral broadening and energy utilization of the grating spectrometer, A solar grating spectrum measurement method based on dual wavefront sensor adaptive optics technology is proposed: by introducing an all electric driver at the conjugate position on the focal plane of the spectrometer, the price is higher. A Hartmann wavefront sensor, the dual wavefront sensor measures the wavefront aberration in grades, and fuses the data detected by the two wavefront sensors to produce the corresponding correction control signal, Thus, the dynamic wavefront aberration and the static aberration of the whole optical system can be corrected, and the spectral imaging performance of the grating spectrometer can be improved. Simulation and experimental results verify the feasibility and effectiveness of the proposed spectrometer