Now I share with you the difference between industrial fixed focus lens and industrial zoom lens in application.

The choice of fixed-focus and zoom lenses in industry depends on the size of the tested scene range and the required clarity of the tested scene. Lens specifications (lens specifications are generally divided into 1/3”, 1/2” and 2/3”, etc.) remain unchanged. The longer the focal length of the lens, the smaller the angle of view of the lens; the lens focal length remains unchanged, the greater the lens specification The larger the lens, the larger the angle of view of the lens. It can be seen that the object distance of the lens remains the same. The larger the focal length of the lens, the smaller the image range of the measured scene and the clearer the image details; the larger the lens specification, the image of the measured scene The larger the range, the more blurred the picture details; the lens specification and lens focal length remain unchanged, the field of view of the CS-mount lens will be greater than that of the C-mount lens.

For a general zoom lens, the minimum focal length is usually about 4.0mm, and the maximum field of view of this zoom lens is about 45°. If this lens is used in a small monitored environment, its monitoring dead angle will inevitably increase. Although the front-end pan/tilt can be operated and controlled to reduce such blind spots, it will increase the engineering cost of the system (the system needs to add front-end decoder, pan/tilt, protective cover, etc.), and the complexity of system control , So in this environment, zoom lens is not suitable.

In an open monitored environment, first, according to the openness of the monitored environment, the user requires the clarity of the monitored scene picture seen on the end monitor of the system, and the center point of the monitored scene to the camera lens. The straight line distance is the reference basis. On the premise that the straight-line distance is fixed and the entire monitored scene is covered, a long focal length lens should be considered as far as possible, so that a clear and detailed scene of the monitored scene can be obtained on the end monitor of the system. In this environment, zoom lens can also be considered, which can be determined according to the design requirements of the system and the performance-price ratio of the system. Two points should also be considered when selecting:

(1) When adjusted to the shortest focal length (viewing the panorama), it should be able to meet the requirements of covering the main monitored scenes;

(2) When adjusted to the longest focal length (see details), it should be able to meet the requirements for observing the details of the monitored scene.

Finally Vehviscam manufacture limited official website Vehviscam ( support 10 languages) provide various fixed focus industrial lens and industrial zoom lens for various industrial cameras, welcome to view online and find interesting models for your cameras well