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Invarigon-R™ Telecentric Gauging Lenses

Melles Griot offers the Invarigon-R™ family of low-cost telecentric gauging and metrology imaging lenses, which provide telecentric imaging with a wide selection of magnifications. The following characteristics make Invarigon-R™ the preferred lens for machine vision applications where precision gauging is important:

· Telecentric performance (<0.2% chief ray angle over the entire object field) allows precise gauging of 3-dimensional objects

· Large selection of magnifications covers most applications

· Low distortion provides highly accurate images

· Lockable aperture adjusts to select the required depth of field

· Fine focus adjustment provides sharper images

· Rugged, single-piece design stands up to harsh industrial environments

· High-performance multi-layer coatings provide the highest image clarity, especially for back-lit applications

· Standard C-mount camera interface

One of the most important benefits of a telecentric lens is that image magnification does not change as object distance varies. A telecentric lens views or displays the entire object from the same perspective angle. Thus three-dimensional features will not exhibit the perspective distortion and image position errors present using a standard camera lens. Objects inside deep holes are visible throughout the field, undistorted, therefore, telecentric lenses are extremely useful for inspecting three-dimensional objects or scenes where image size and shape accuracy is crucial.

Other machine vision products include Invaritar™ and Macro Invaritar™ telecentric gauging lenses, and cost-effective, custom IVM™ (integrated-vision modules) that include lighting, optics and cameras in an ergonomic package optimized for integrators and end-users.

Melles Griot, the leading North American provider of high-performance lenses and imaging systems, specializes in the design, prototype, and volume manufacture of multielement optical systems for laser and machine vision applications. Melles Griot also is a leading global supplier of photonics products including optics, lasers, motion-control systems for the telecommunications industry, laser measurement instrumentation, and opto-mechanical hardware. The company has manufacturing and distribution activity in 41 countries worldwide and is a Barloworld Leading Brands company.