High precision six-degree-of-freedom optical component posture adjustment device

Abstract

The invention relates to a high precision six-degree-of-freedom optical component posture adjustment device and the field of optical component precision adjustment technology in large scale optical load, and problems including large mass and low transverse stiffness in the adjustment mechanism in the prior art are solved. The device comprises a fixed platform with a Y-shaped structure, six linear actuators arranged on the fixed platform, a movable platform and six rotary supporting hinges which are respectively connected with the six linear actuators, wherein each angle of each adjacent two mounting surfaces in three mounting surfaces of the Y-shaped structure is 120 degrees, three groups of linear actuators are respectively fixed to the three mounting surfaces of the fixed platform, the rotary supporting hinges comprises two connecting bases which is fixedly connected with the movable platform and the linear actuators, two offset universal hinges which are respectively connected with the two connecting bases and a fixed-length rotating hinge of which two ends are respectively connected with two offset universal hinges, and six first connecting bases in the six rotary supporting hinges are oppositely arranged on the movable platform. According to the invention, the device has advantages of high precision, light weight, high stiffness and stable imaging quality.

Description

technical field [0001] The invention relates to the technical field of precision adjustment of optical components in large optical loads, in particular to a high-precision six-degree-of-freedom optical component pose adjustment device. Background technique [0002] The precision adjustment technology of optical components for large-scale space optical payloads is one of the key technologies for high-quality imaging. Due to the influence of the loading conditions (such as shock, vibration, overload, etc.) during launch and the environmental conditions (such as pressure, temperature, microgravity, etc.) Image quality degrades. In order to ensure the imaging quality, it is necessary to correct the position and orientation changes of the optical components. Therefore, it is very necessary to design an adjustment mechanism with high precision and high stability. [0003] At present, the existing optical assembly pose adjustment mechanism mainly includes an optical adjustment f...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of large mass and low lateral stiffness existing in the existing optical component position adjustment mechanism, the present invention provides a high-precision six-degree-of-freedom optical component position adjustment device based on linear actuation-offset universal hinge, which is used For precise adjustment of the pose of optical components in large space optical payloads

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