The optical lens of an image measuring system serves as a critical structural component, playing a significant role in the measurement process, while the optical probe provides one of the fundamental foundations for precise measurement. Before an image measuring system is put into operation, mechanical alignment, optical magnification calibration, and probe verification are required to achieve higher measurement accuracy. When multiple image measurement sensors exhibit positional eccentricity, positional offset correction is necessary. This is typically performed by aligning the additional sensors with a reference sensor using a calibration standard, ensuring that the deviation values remain within specified limits.

OGP image measuring systems employ two types of optical lens configurations. The first is a continuously zooming self-calibrating zoom lens, with zoom ratios such as 5:1, 6.5:1, 10:1, and 12:1, used in series like ZIP, Starlite, CNC, and Vantage, respectively, depending on the model and optical magnification requirements.

The second type is a fixed-magnification optical lens. OGP’s View series products utilize two fixed-magnification lenses (high and low) that can be switched automatically and rapidly.

Calibration of the image measuring system is a crucial step in obtaining accurate measurements. It requires professional technicians to operate with calibration standards, involving fine adjustments of mechanical components such as the camera, verification of measurement accuracy in the XYZ three-dimensional directions, and calibration of different magnification levels after optical zooming. This lays a solid foundation for the subsequent performance of the image measuring system.