Imaging Lenses feature various magnifications.

Press Release Summary:

Invarigon-R(TM) telecentric gauging and metrology lenses have multilayer coatings that provide high image clarity, especially for back-lit applications. Less than 0.2% chief ray angle over entire object field allows precise gauging of 3D objects. Lockable aperture adjusts to select required depth of field. Single-piece design stands up to harsh industrial environments. Lenses include standard C-mount camera interface.

Original Press Release:

Invarigon-R(TM) Telecentric Gauging Lenses

Melles Griot introduces the Invarigon-R(TM) 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(TM) 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 multilayer 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(TM) and Macro Invaritar(TM) telecentric gauging lenses, and cost-effective, custom IVM(TM) (integrated-vision modules) that include lighting, optics and cameras in an ergonomic package optimized for integrators and end-users.

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