Linkage type compact optical window protection cover

Abstract

The invention relates to the field of aerial cameras, in particular to a linkage type compact optical window protection cover in the aerial camera. A protection cover mechanism mainly comprises a guide shaft, a transmission device, a ball screw, a single-side straight-line bearing, a double-side straight-line bearing and a connecting plate. The linkage type compact optical window protection cover has the technical schemes that the ball screw is driven to rotate by a chain wheel, and the rotary movement is converted into straight-line movement by a screw; a plurality of the optical window protection covers are connected by the dustproof and self-lubricating single-side straight-line bearing and the dustproof and self-lubricating double-side straight-line bearing, thereby realizing the linkage of the protection covers. The linkage type compact optical window protection cover has the advantages that due to the chain transmission design, the average transmission ratio is accurate, the transmission efficiency is high, the structural size is more compact, and the linkage type compact optical window protection cover is suitable for a high-altitude low-temperature environment; with the adoption of the chain-transmission and self-lubricating straight-line bearings, the synchronism of the movement of the protection covers is realized, and the reliability of the movement of the mechanism is enhanced; the design of the optical window protection cover is realized in a limited size range, and the safety of the optical window protection cover is ensured. The linkage type compact optical window protection cover has the greatest characteristics of compact structure, flexibility in use, safety and reliability.

Description

technical field [0001] The invention relates to the field of aerial cameras, in particular to a linkage type compact optical window protective cover for the optical window in the aerial camera. Background technique [0002] As an important part of the aerial camera's earth observation, the optical window is generally located at the lower end of the aircraft. During takeoff and landing, impurities on the runway will be rolled up, which can easily damage the optical windows exposed to this environment. Therefore, the window protective cover is required to protect the optical window, and at the same time, the movement of the window protective cover must be stable and reliable. Due to the relatively large field of view of the camera and the large size of the optical window, in order to avoid the aerodynamic problems caused by the large step difference at the window, the optical window generally uses multiple pieces of glass splicing to reduce the step difference, resulting in t...

AI Technical Summary

Problems solved by technology

During take-off and landing, impurities on the runway will be rolled up, which can easily damage the optical window exposed to this environment

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