MidOpt has more than 3,000 test glass radii in-house, one of the largest inventories of test glasses in the world. Stock radii can be rented, copied or used to fabricate custom lens components. When used in the design phase of a custom optics project, this not only helps to greatly eliminate tooling charges, but it aids greatly in shortening delivery lead times. A complete test glass listing can be found within current versions of Zemax and Oslo optical design software, or can be emailed on request.