With the development of technology and information technology, robots or other intelligent machines have slowly gained visual skills. Now, important product functions in 3D machine vision systems have gradually improved.

The machine vision system uses the machine to measure and judge human eyes. The visual system converts the image signal into a digital signal, and the image processing operates on these signals to extract the characteristics of the target.

The characteristic of 3D machine vision is to improve the flexibility and automation of production. Machine vision is used in places where manual vision cannot meet the requirements. In large-scale industrial production, manual inspection of product quality is low and errors are high. Using machine vision can improve production. 3D machine vision can achieve information integration and is the basic technology for computer integrated manufacturing.

A complete machine vision system includes the following products:

1. Camera

The camera is an important component in machine vision, and different types and resolutions of cameras should be selected according to different usage sites. The choice of camera not only determines the resolution and quality of the collected images, but also depends on the operating mode of the entire system.

2. Light source

The light source is an important part of the machine vision. The main goal is to project the light onto the measured object in a suitable way, show the contrast of the measured part, and let the measured place react in a more clear and accurate form. For different practical uses, the light source to be selected is also different.

3. Lens

In the machine vision system, the main function of the lens is to place the imaging target on the photosensitive surface of the image sensor, and the basic function of the lens is to achieve beam exchange.

Choose the appropriate lens according to the accuracy of the test product. The telecentric lens selects the model according to the field of view required by the test product. The ordinary lens selects the model according to the working distance and product field of view. Special conditions require the selection of other types of lenses, such as high magnification lenses.