AO000639

Entocentric lenses have a fixed or variable (zoom lenses) angle of beam spread of the optics to the lens. They are used for applications such as presence and placement checks, pick & place applications, feature inspections, color applications, OCR and code reading. Due to the perspective error, they are not suitable for measuring tasks. Telecentric lenses are special optical lenses that are characterized by the fact that the entrance or exit pupil is at infinity. These are mainly used in surveying tasks with high repeat accuracy. In particular, when measurements are to be taken with fluctuating object positions (via the image field in the X and Y directions) without perspective distortion.pericentric lenses were developed for the simple inspection of holes, cavities and containers. Unlike conventional optics that can only image flat fields of view, hole inspection lenses are specially designed for imaging both the bottom of a cavity and its perpendicular walls, and thanks to the large angle of view, these lenses are compatible with a wide range of lens diameters and thicknesses. Hole inspection optics are the perfect solution when it comes to inspecting a variety of different object shapes, e.g. cylinders, cones, holes, bottles or test objects with threads.