Onboard three-optical-axis consistency test component, system and method

Abstract

The invention relates to an onboard three-optical-axis consistency test component, system and method. The test component comprises a collimator, a beam splitter, a target plate, a CCD detector and a blackbody light source; the beam splitter, the target plate, the CCD detector and the blackbody light source are positioned at one end of the converging light entrance of the collimator; the target plate is positioned on the focal plane of the collimator; the blackbody light source is used for illuminating the target plate; the emergent light of the target plate reaches the converging light entrance of the collimator via the beam splitter; and the emergent light of the converging light entrance of the collimator reaches the CCD detector via the beam splitter. The test method comprises the stepsof 1, transferring a datum; 2, testing the drift angle of the optical axis of the laser light path via the CCD detector; and 3, testing the respective drift angles of the television light path optical axis and the infrared light path optical axis via the blackbody light source. According to the component, system and method provided by the invention, the problems that the existing test system andmethod are limited in accuracy, large in optical adjustment difficulty and not applicable to being onboard are solved.

Description

technical field [0001] The invention belongs to the field of optical measuring instruments, and in particular relates to an airborne three-axis consistency test component, system and test method Background technique [0002] With the continuous application in the field of security reconnaissance and the increasingly complex application environment, in order to quickly and timely find the target in an all-weather environment and realize real-time tracking and accurate measurement of the target, the airborne optical sight has changed from the traditional single optical axis system Transformed into today's multiple small sub-optical systems. The consistency of the three optical axes of the optical sight, that is, the parallelism between the optical axes of the laser optical path, the optical axis of the TV optical path and the optical axis of the infrared optical path, has an important impact on the performance of the entire system. How to perform high-precision real-time dete...

AI Technical Summary

Problems solved by technology

Although the common bullseye calibration method of projection target plate has the advantages of low cost and simple test method, the test is greatly affected by the environment, the test accuracy is limited to a certain extent, and it cannot be detected and calibrated in real time

The laser optical axis method has the ability of self-diagnosis and can reduce the influence of human factors on the measurement, but the optical installation and adjustment is difficult, has a strong specificity, and the test system is large in size, which is not suitable for airborne equipment

The pentaprism method mainly refers to the transformation of the characteristic direction of the pentaprism during the test movement, which will cause the deviation of the optical axis, thereby affecting the measurement accuracy.

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