Lenses

Good vibrations

Greg Blackman reports on the latest lens technology presented during Vision Stuttgart, including optics designed to withstand shock

Modulation Transfer Function (MTF)

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The Modulation Transfer Function (MTF) curve is an information-dense metric that reflects how a lens reproduces contrast as spatial frequency (resolution) varies. MTF curves can be used to compare the performance of multiple lenses and can help determine if an application is actually feasible with the respective lens.

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EMVA appoints standards manager

The European Machine Vision Association has appointed Arnaud Darmont as its new standards manager, who will be responsible for identifying new standardisation needs

Shining a light on lenses

Stemmer Imaging’s series of technology days included talks from various lens manufacturers. Here, we round up some of what was discussed at the event

Ruggedization of imaging lenses

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Imaging lenses used in many industrial machine vision applications have special requirements beyond those of standard imaging lenses. The lenses used in factory automation, robotics, and industrial inspection have to work in specific and demanding environments, which could involve vibrations, shocks, temperature changes, and contaminants. Because of these environmental requirements, new classes of ruggedized lenses are being designed specifically to work in a multitude of different scenarios, therefore creating different types of ruggedization. There are three distinct types of ruggedization available: Industrial Ruggedization, Ingress Protection Ruggedization, and Stability Ruggedization.

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