Focusing convergent mirror set device of airborne area array imager

Abstract

The invention discloses a focusing convergent mirror set device of an airborne area array imager. The focusing convergent mirror set device of the airborne area array imager comprises a base plate, two supporting frames, a focusing linear motor, two focusing guide rail assemblies and a convergent mirror assembly, wherein the upper end surfaces of inner frames of the two supporting frames are fixedly connected with the upper end surface of the base plate, the two focusing guide rail assemblies are fixedly installed on the lower end surface of the base plate, and the convergent mirror assembly is installed on the two focusing guide rail assemblies in a sleeving mode. The focusing linear motor is fixedly installed at the back side of the base plate, and an output shaft of the focusing linear motor is fixedly connected with the convergent mirror assembly. The focusing convergent mirror set device of the airborne area array imager is reasonable and compact in structure, simple in control, high in reliability, easy to manufacture, easy and convenient to install, low in cost and convenient to use, has a self-locking function and is suitable for various airborne imaging spectrographs, and the focusing precision reaches 0.0015 millimeter.

Description

technical field [0001] The invention relates to a focusing and converging lens group device, in particular to a focusing and converging lens group device for an airborne area array imager. Background technique [0002] The airborne area array imager is a device that is mounted on an aircraft and realizes staring and imaging of the ground during flight. A converging lens group is installed in the imaging system of the imager to realize the function of converging and imaging the optical path of the system. The airborne area array imager generally works in a high-altitude environment, and the temperature drops by 6°C every time the altitude increases by 1 km, while the processing and assembly of the imager optical system are carried out at normal ground temperature, so the working environment temperature A change in the optical performance will inevitably lead to a decline in optical performance, or even unusable. Adding a focusing mechanism to the converging lens group of th...

AI Technical Summary

Problems solved by technology

The airborne area array imager generally works in a high-altitude environment, and the temperature drops by 6°C every time the altitude increases by 1 km, while the processing and assembly of the imager optical system are carried out at normal ground temperature, so the working environment temperature The change will inevitably lead to the decline of optical performance, or even unusable

Adding a focusing mechanism to the converging lens group of the airborne area array imager and changing the position of the focal plane of the optical system in real time can solve the impact of high-altitude temperature difference on optical performance, but the structure of the focusing mechanism that generally uses mechanisms such as cams and connecting rods is cumbersome and bulky. Large, unable to be installed in the compact optical-mechanical structure of the airborne area array imager that has a volume limit for the installation of the converging lens group, and the mechanism has a large mass and high cost

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