Optical axis conversion method in assembly and debugging of off-axis three-reflection optical system

Abstract

The invention is an optical axis transform method in alignment of off-axis three-mirror system, comprising the steps of: making decomposition transform on three-dimensional translational regulation quantity in the optical axis direction; making decomposition and correction treatment on 2D rotary regulation quantity and included angle of optical axis and building mapping relation between system's optical axis reference frame and regulation frame right-angle reference frame. And it quantifies the mapping transform relation between per-dimensional regulation quantity under system's optical axis reference frame and per-dimensional regulation quantity of optical regulation frame in actual alignment course and can eliminate difference between designed model and actual system alignment course, thus speeding up alignment of off-axis three-mirror system.

Description

Technical field: [0001] The invention relates to a method for transforming the optical axis in the assembly and adjustment of an off-axis three-reflection optical system. Specifically, it refers to the adjustment amount of each dimension of the optical adjustment frame during the assembly and adjustment of the off-axis three-reflection optical system within the system design optical axis. The method of decomposing and transforming in the direction to eliminate the difference between the actual system and the design model in the process of assembling and adjusting, thereby accelerating the process of assembling and adjusting the off-axis three-reflection optical system. Background technique: [0002] With the wide application and rapid development of space optical remote sensors, the structure of its optical system has developed from the traditional coaxial system to the off-axis system. Among them, the off-axis three-reflection system has no central occlusion, high energy ut...

AI Technical Summary

Problems solved by technology

Due to the complexity of the structure of the off-axis three-reflection optical system, considering the problems of mirror processing and system installation and adjustment, there is generally an included angle between the optical axis and the horizontal direction of the optical system that is actually designed and processed; Due to the limitations of the installation and adjustment space and the limitation of the machining level and assembly process, the adjustment amount of each dimension of the optical adjustment frame used for system adjustment is often parallel to the horizontal direction of the optical platform; therefore, it cannot be realized in the optical design software. The ideal state of the design for assembly and adjustment

[0003] At present, the method of computer-aided adjustment is generally used to adjust the off-axis three-reflection optical system. The misalignment calculated by the computer-aided adjustment simulation is in the direction of the optical axis, because the adjustment amount direction of each dimension of the optical adjustment frame is different from the optical axis of the system. There is an included angle between them, ignoring the difference between the two will affect the convergence speed of the system installation and adjustment process, making the system installation and adjustment process slow down or even diverge

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