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Collimated backlight for precise inspection and measurement

Posted on 21 May 2022 and read 1161 times
Collimated backlight for precise inspection and measurementTPL Vision — a global provider of high-brightness LED illumination solutions for identification, robotics and machine vision applications — says new advancements in machine vision are accelerating the use of digital image analysis for measurement and quality analysis.

“Collimated lights are used in machine vision projects where having clearly defined edges of objects are critical to the application’s success. TPL Vision’s new collimated backlight brings high intensity illumination in a small package for projects requiring precise silhouetting.

“Due to its slim profile — just 21mm thick and with narrow 5mm borders — the CSBack can achieve high-contrast images in challenging applications working within confined spaces, or small objects that are difficult to inspect.”

Jack McKinley, TPL Vision’s product manager, added: “CSBack was designed to facilitate machine vision projects with a focus on the automotive and manufacturing industries, as well as pharmaceutical, and food and beverage, the aim of the product being to help users eliminate poor-quality images that can lead to inaccurate measurements or a loss of productivity.

“Key application areas include the imaging of clear parts and objects with rounded edges, as these are notoriously hard to inspect with improper lighting due to the lack of contrast. Using the collimation effect solves this issue by preventing the diffuse light from spreading around the edges of parts, thereby increasing contrast and measurement accuracy.

“CSBack can help applications such as measuring thread pitch, checking the placement of lids, analysing the profile of thick and round workpieces, and examining for scratches or dents on transparent surfaces. The unit can be used with regular C-mount lenses as well as telecentric lenses, providing uniform illumination at various sizes from 50 x 50mm to 200 x 200mm.”