Photonics Handbook®
A unique collection of technical design and applications articles, as well as technology primers presenting the basics of the photonics technology.
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ARTICLE OF THE HOUR Polygonal Laser Scanners
Fitting the Elements to the Task
Polygonal laser scanning is the technology of choice in a variety of applications. It can be used to write information as in laser marking and printing, direct-to-plate imaging, film recording and laser projection; or as a reader for bar code scanning, densitometry, web inspection and agricultural inspection.Reading and writing systems for polygonal scanners differ in the use of the scanner. However, many performance characteristics are similar for both. In writing applications, a light source,...