Imaging jitter detection device applied in vacuum low-temperature environment based on off-axis collimation optical system

Abstract

The invention discloses an imaging jitter detection device applied in a vacuum low-temperature environment based on an off-axis collimation optical system. The imaging jitter detection device comprises a primary mirror, a reflex mirror, an integrating sphere, a target, a translation stage, a displacement stage, a vibration isolation platform, a vacuum container and an optical window, wherein a space camera is placed on the vibration isolation platform, the primary mirror is fixed on the vibration isolation platform, the reflex mirror is fixed on the vibration isolation platform, the vibration isolation platform, the camera, the primary mirror and the reflex mirror are placed in the vacuum container, the integrating sphere is placed in an atmospheric environment, the target is fixed on the displacement stage or the translation stage, the optical window is installed on the vacuum container, finally a jitter image is acquired through image processing software, and influences imposed on an imaging result by jittering in different directions are understood through analyzing the jitter image. The imaging jitter detection device is mainly applied to imaging jitter detection in the vacuum low-temperature environment, and realizes detection for multidirectional imaging jittering of the space camera in the vacuum low-temperature environment through the off-axis collimation optical system.

Description

technical field [0001] The invention belongs to the technical field of imaging detection and measurement in a vacuum low temperature environment. Specifically, the invention relates to a vacuum low temperature environment imaging shake detection device based on a collimating optical system. Background technique [0002] The vibration of the satellite's platform during orbiting has a huge impact on high-resolution remote sensing imaging, and the high-resolution space camera has the characteristics of large aperture and long focal length, which requires the accuracy and stability of the optical axis pointing of the optical system Also very high. Therefore, it is necessary to detect the imaging shake of the camera in a simulated space environment, understand the impact of the vibration of the satellite platform on the imaging of the high-resolution space camera, and provide reference and basis for the design of the satellite platform and the high-resolution space camera. An im...

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Problems solved by technology

The Xi’an Institute of Optics and Fine Mechanics, the Institute of General Assembly and Environmental Engineering, and the Beijing Institute of Space Mechatronics, Chinese Academy of Sciences have built a collimator system in a vacuum and low temperature environment and conducted calibration tests on the camera. This system simulates the space environment more realistically. But there is no jitter detection in a vacuum and low temperature environment

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