Lenses

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Modulation Transfer Function (MTF)

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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Ruggedization of imaging lenses

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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Ruggedization of Imaging Lenses

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.

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Damir Dolar, managing director of Croatian firm Smartek Vision, spoke at the European Machine Vision Association’s business conference in Dubrovnik, Croatia, in June. Here, he gives his view on the European industrial imaging market

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Matthew Dale discovers that polarised imaging could soon see a surge in uptake in industrial inspection, thanks to a new sensor from Sony

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Active Silicon turns 30 in September. Greg Blackman speaks to founder Colin Pearce (below) on building the company and the importance of FPGA technology

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Greg Blackman on the deep learning software tools now being deployed in industrial imaging

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Keely Portway looks at some of the miniature imaging technology used in endoscopes

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