Cnc Programming

Telecentric Lens Machine Vision System

Tc core bi telecentric lenses for sensors up to 23 feature a truly revolutionary ultra compact opto mechanical design. This tutorial introduced the concept and set up for the object space telecenric system and image space telecentric system and advantages of telecentric lens that can impact the.

Telecentric Lens Machine Vision Lens Industrial Lens

Telecentric Lens Wikipedia

The Advantages Of Telecentricity

Backlighting via telecentric lenses can.

Telecentric lens machine vision system. Vital vision technology offers a wide varieties of machine vision lenses design for both specific and general machine vision applications. An entrance pupil at infinity makes the lens object space telecentric. Nowadays high accuracy and performance of critical to many machine vision system a method that use telecentric lens allows highest possible accuracy to be obtained. Telecentric lens vs tct series super high resolution telecentric lenses supports 167um 10 megapixel camera. The simplest way to make a lens telecentric is to put the aperture stop at one of the lenss focal points. Software engineers requiring precise measurement of mechanical parts need high contrast images with the lowest possible geometrical. Despite their inherent advantages in machine vision systems telecentric lenses are not a panacea for every imaging application. Successful machine vision integrators are increasingly aware that quality optics produce superior system performances and telecentric lenses are required for any dimensional measurement imaging application. For example if a machine vision system needs to find the center location of a pin as shown in figure 3a the transition from white to black is quite sharp when the lens is in focus. Differentiating lenses whereas many machine vision systems use object space telecentric lenses such lenses also can be built so that the principal rays arrive at the lens in parallel to the optical. Objects to be imaged with telecentric lenses cannot be larger than the lens itself or border rays cannot enter the lens parallel to each other. While it may seem counterintuitive blur can be used advantageously in certain applications with telecentric lenses. With bi telecentric lenses the magnification in both image and object space is independent of distance within the depth of field or the position in the field of view. In a telecentric lens the rays which pass through the center of the aperture are parallel to the optical axis in front of or behind the system. Such lenses are used in machine vision systems because image magnification is independent of the objects distance or position in the field of view.

Thorlabs has collaborated with navitar to design and manufacture a line of telecentric lenses for machine vision applications. By using a telecentric lens system system integrators can reduce the distortion caused by parallax and obtain a less distorted image see fig. These lenses deliver high end optical performances and at the same time are up to 70 smaller than other double sided telecentric lenses on the market thus allowing to significantly downsize a vision system.