Optical path switching method and monitoring module

Abstract

The invention provides an optical path switching method, and the method is applied to a monitoring module comprising a camera, a zoom lens, a switching element and a reflecting element. The method comprises the following steps: determining a target multiplying power; when the target multiplying power is smaller than or equal to the maximum multiplying power of the camera, setting the multiplying power of the camera as the target multiplying power, determining that the reflecting element is located at the first position or in the first working state, and enabling the camera to independently collect images; when the target multiplying power is larger than the maximum multiplying power of the camera, setting the multiplying power of the camera to be the first multiplying power, determining that the reflecting element is located at the second position or in the second working state, and enabling the camera and the teleconverter to be combined to collect images, wherein the product of the first multiplying power and the multiplying power of the teleconverter is the target multiplying power. According to the method, the monitoring distance of the monitoring module can be remarkably increased under the conditions that the size of the monitoring module is reduced and the cost is saved.

Description

technical field [0001] The present application relates to the field of optical imaging, in particular to an optical path switching method and a monitoring module. Background technique [0002] At present, cameras commonly used in monitoring modules in the security field include monocular cameras, multi-eye cameras or spherical cameras. These cameras already have video intelligent analysis functions, such as motion detection, line crossing detection, area intrusion detection, loitering detection, gathering of people, etc. [0003] The video analysis function of the monitoring module is relatively powerful, but there are also some application defects. When the monocular camera uses a telephoto lens, it can capture long-distance details, but the monitoring range is limited due to the small field of view; using a wide-angle lens, the field of view is large and the monitoring range is large, but the long-distance details are not captured clearly. The multi-eye camera can cover ...

AI Technical Summary

Problems solved by technology

In application scenarios such as large-scale and high-point monitoring, the coverage distance of the selected focal length of the camera of the existing monitoring module is limited, and the target details cann...

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