...advances in LEDs are published stating higher brightness, multicolored chips, additional drivers, and better efficiencies. The main drivers of the LED advancements are from the commercial market for signs, video displays and general lighting. "As a manufacturer of LED lights for machine vision, this becomes a full-time job to evaluate and test performance of the LED technology for the machine vision market, which has very different requirements than the commercial market," said don Chouinard, Lighting Business Development Manager, Siemens Energy & Automation (Norcross, Ga.). "Many of the aspects of keeping a production line up and running need to come into play and design for life, heat, vibration and cost.... One of the big challenges in these advancements is addressing the thermal dynamics of the LEDs as more brightness means more heat due to power consumption. This, along with the need to implement controls into light heads, creates a...

NOTE: All illustrations and photos have been removed from this article.



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