In the field of machine vision inspection, ZOOM LENSES and Vari-focal lenses differ by just one character yet have fundamental distinctions, each serving unique functions.

Vari-focal lenses focus on flexible field-of-view adjustment. By leveraging multiple lens groups working in concert, they enable continuous focal length variation, allowing effortless switching between wide-angle and telephoto perspectives. This feature makes them ideal for complex scenarios, handling both rapid scanning of expansive areas and detailed examination of localized features with equal ease. They are typically used in PCB board inspection, capable of both overall positioning and focusing on minute details like solder joints.

ZOOM LENS, however, prioritizes precise adjustment of magnification levels. At a fixed working distance, they achieve continuous changes in image size through fine-tuning of lens groups without altering the image plane position. This high stability makes them excel in high-precision measurement tasks, such as chip character recognition and precision component inspection. Their stable image plane provides a reliable foundation for subsequent image processing.

Operationally, Vari-focal lenses suit dynamic scenes by enabling rapid field-of-view switching, while ZOOM LENS excel in automated systems through motorized control for precise focusing.

When selecting, opt for Vari-focal lenses if flexible observation range adjustment is required; choose ZOOM LENS for high-precision magnification at fixed distances. Complementary in function, both drive the advancement of machine vision inspection technology.