Calibration target for optical axis calibration of multi-band multi-optical axis photoelectric system

Abstract

The invention discloses a multi-band multi-optical axis photoelectric system optical axis calibration target, the main technical feature of which is that multiple optical fiber rods, optical fibers and four single-mode optical fibers with different lengths in the simulator are connected to each other. Two ends and several high thermal conductivity rods are closely arranged in the cavity of the target shell and each end face constitutes the target surface; in the central area of ​​the target surface, four pairs of single-mode fiber end faces form a cross centered on the end face of an optical fiber rod. Several high thermal conductivity rods are distributed around the reticle, and the gaps on the target surface are filled with display powder. The invention can not only calibrate multiple optical axes, but also evaluate the distance measuring performance of the laser distance measuring machine. At the same time, it can be used in conjunction with the vibration component, and can also be used for evaluating the dynamic performance of the photoelectric system under test. The invention has the advantages of high anti-laser damage threshold, small light spot spread and high precision of axis calibration.

Description

technical field [0001] The invention relates to a calibration target used for optical axis calibration, mainly relates to a calibration target used for optical axis calibration of each band of a multi-band multi-optical axis photoelectric system, especially relates to a laser with high peak power density The photoelectric system of the transmitter is the calibration target for optical axis calibration and detection. technical background [0002] With the rapid development of modern optoelectronic technology, more and more optoelectronic systems are used in military and civilian products, especially multi-band and multi-axis photoelectric detection systems integrating laser, infrared, visible light, television, and low light. The photoelectric tracking system has been widely used on various weapon platforms, and this kind of photoelectric system has played an important role in improving the comprehensive combat effectiveness of the weapon system. For a photoelectric system w...

AI Technical Summary

Problems solved by technology

The main defects of this alignment target are: the target surface is a whole piece of material, and its thermal diffusion will cause the spot to increase; the thermal conductivity of the spectral conversion material is low, and it cannot achieve rapid temperature changes. , there will be a phenomenon that multiple light points cannot be distinguished, which will affect the calculation accuracy of the automatic axis calibration reference point

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