The circles labeled 11, 9, and 6 correspond to the image circles of 2/3-in., 1/1.8-in., and 1/3-in. Performance parameters, such as distortion and relativeĪn operator performs a test using reverse projection. There is often information to be garnered about other Resolution is generally the first thing one notices about the Parameter with the deepest well of literature on testing.
It is the parameter that is pushed the hardest by the ever-decreasing size of pixels. The discussion is limited to methods for evaluating resolution because, while there are many performance parameters that are of interest to machine vision users, the most important is resolution. Real-world application comparisons to illustrate how machine Methodologies for resolution and enough context and What follows are assessments of the most common testing It’s not as simple as making concessions on accuracy to gain speed. There is no single “right” way to test a lens the same lens may require multiple test methods when employed in multiple applications. The lens, evaluating its performance becomes both more Courtesy of Edmund Optics Inc.Īs increasingly demanding requirements are placed on
A commercially available modulation transfer function (MTF) test station from Trioptics tests an imaging lens.
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