Focal point positioning device for astronomical telescope

Abstract

The invention relates to a focal point positioning device for an astronomical telescope. The focal point positioning device for the astronomical telescope comprises a bearing platform, spectroscope lenses, reflector lenses and three screw rods, wherein the bearing platforms can be rotated around a shaft; the spectroscope lenses are arranged above the shaft; the reflector lenses are arranged on the bearing platform; the three screw rods are arranged on the bearing platform and are distributed at angles of 120 DEG mutually; the screw rods and the reflector lenses are positioned on the same linear optical path and are distributed on both sides of the spectroscope lenses respectively; sliding seats which can be moved back and forth along the screw rods are sleeved on the screw rods; and the spectroscope lenses and the reflector lenses are arranged on the sliding seats respectively through adjustable lens bases. The focal point positioning device is convenient to assemble and carry, focusing light sources can be selected according to the wavelength of detection signals of a laser radar, optical paths are finely tuned by the two-dimensional adjustable lens bases, and the spatial distribution of three beams of parallel light is adjusted through an operating crank of the sliding seat and an operating crank of a turntable, so that the three beams of parallel light enters an objective lens of the astronomical telescope to be focused, focus points are rapidly and accurately positioned, and the focal point positioning device is easy to use, low in cost and is convenient to fix and operate.

Description

technical field [0001] The invention belongs to the field of laser radar, and in particular relates to a focus positioning device for an astronomical telescope, that is, a device for accurate, simple and fast positioning of the focus of a telescope in an atmospheric detection laser radar receiving system and a method for using the same. Background technique [0002] With the rapid development of laser technology and photoelectric detection technology, atmospheric detection lidar has become an effective means of atmospheric parameter measurement, and is a powerful tool for real-time monitoring of atmospheric wind field, temperature, aerosol, cloud, water vapor and pollutants. Significant advantages such as accuracy, high sensitivity and high spatiotemporal resolution. [0003] The accurate positioning of the telescope focus in the lidar receiving system is one of the key technologies to ensure the effective detection of atmospheric lidar, which is related to the accurate desi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device for focus positioning of astronomical telescopes, which can quickly and conveniently locate the focus of the telescope accurately, and solve the problems of decreased detection performance and poor measurement accuracy caused by inaccurate focus positioning of the laser radar receiving telescope.

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