In industrial production inspection, it is often necessary to use machine vision systems to complete quality inspections such as appearance or size. Industrial lenses, as the "eyes" of the machine vision system, play an important role in inspection imaging.

In most cases, visual inspection only requires a clear view of the product image at a specified distance, and a fixed magnification lens or prime lens can meet the requirements.However, with the rapid development of industrial production technology, products are becoming more and more complex, and the application scenarios of machine vision systems are becoming more and more abundant. Some scenes require continuous zooming in and out to capture a complete image, which requires a zoom lens to play its role. 

A zoom lens can achieve clear imaging of the subject by changing the optical magnification of the lens.According to the zoom adjustment method, it can be divided into two types: motorized zoom and manual zoom. Each has different advantages and applicable scenarios.

The manual zoom lens requires the user to manually rotate the adjustment ring on the lens body to adjust the magnification. It has a simple structure, easy maintenance, high cost performance, and is widely used in the field of scientific research.

Motorized zoom lens, which uses an internal motor to complete the zoom. It can realize continuous zooming and the zooming speed is fast, which is suitable for use in complex and high-speed detection scenarios.

Motorized zoom lenses and manual zoom lenses each have their own advantages and are suitable for different application scenarios. For scenes that require fast zoom and automatic zoom, motorized zoom lenses are more suitable.For scenes with higher cost requirements and no shooting speed requirements, manual zoom lenses are a better choice. When choosing a zoom lens, you need to choose the appropriate type based on the actual application requirements.