John Lewis is a former editor in chief at Vision Systems Design. He has technical, industry, and journalistic qualifications, with more than 13 years of progressive content development experience working at Cognex Corporation. Prior to Cognex, where his articles on machine vision were published in dozens of trade journals, Lewis was a technical editor for Design News, the world's leading engineering magazine, covering automation, machine vision, and other engineering topics since 1996. He currently is an account executive at Tech B2B Marketing (Jacksonville, FL, USA). 

B.Sc., University of Massachusetts, Lowell

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Hybrid TDI cameras take on advanced applications

Time Delay Integration (TDI) is essentially a line scan imaging method that increases sensitivity by oversampling the scene across a plurality of line sensors, which are synchronized...
June 17, 2019
Figure 1: In each of Byrne’s three assembly cells, two six-axis robots work with a 4-camera Datalogic machine vision system to pick parts, assemble and inspect outlets. The final pack out cell uses an LMI Gocator 3D snapshot sensor for final inspection.

Machine vision system identifies and locates pickable parts for robotic assembly cell

Machine vision system locates busbars on a backlit conveyor and verifies proper robotic assembly of electrical receptacles
May 1, 2019
Content Dam Vsd En Articles Print Volume 24 Issue 1 Departments Inside Vision Has 3d Imaging Finally Come Of Age Leftcolumn Article Thumbnailimage File

Has 3D imaging finally come of age?

A new class of 3D-imaging products specifically targeted at measuring, surface analysis, CAD modeling, and reconstruction have made it easier for end-users to integrate 3D imaging...
Jan. 16, 2019
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You’re invited

Editor in Chief John Lewis invites you to Laser Focus World’s 31st Annual Lasers & Photonics Marketplace Seminar to be held on February 4, 2019, the Monday before SPIE Photonics...
Dec. 19, 2018

Finding the right camera

To help alleviate the task of finding the find camera for your application, our 16th annual Worldwide Industrial Camera Directory include models from more than 100 camera vendors...
Nov. 1, 2018
Content Dam Vsd En Articles Print Volume 23 Issue 9 Departments My View Deep Learning Improves Defect Detection In Complex Applications Leftcolumn Article Thumbnailimage File

Deep learning improves defect detection in complex applications

Applying deep learning technology to machine vision applications is an increasingly popular and effective method to improve object detection and classification. Learn more about...
Oct. 2, 2018

Keep your knowledge fresh

For those developing machine-vision and image-processing systems, keeping up with changes is an increasingly challenging task that is more important than ever.
July 1, 2018
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Pivoting dual-lasers improve 3D bin picking

Engineers at IT+Robotics have developed a unique 3D machine vision system, called EyeT+ Pick, which integrates a motor pack with two lasers and a camera, which is used for a 3D...
July 1, 2018