LEDs Shed Light on the US Navy


The guided-missile destroyer USS Chafee (DDG 90) departs Joint Base Pearl Harbor-Hickam. (U.S. Navy photo by Mass Communication Specialist 2nd Class Mark Logico)

The USS Chafee (DDG90) has become the first US Navy ship to be fitted with all-LED lighting.  More than 600 LED lighting fixtures provide light for the guided missile destroyer based in Hawaii.  The Navy expects to save more than $50,000 per year using the new lighting system installed by Energy Focus Inc.

According to a post on the Armed with Science blog, Ben Hatch, an electrical engineer at the Naval Surface Warfare Center Carderock Division – Ship Systems Engineering Station in Philadelphia, who oversaw the installation, said, “The longer lifespan also results in a huge amount of savings in regards to maintenance.  LEDs last 50 times longer than the incandescent meaning the lights only need to be replaced every six years compared to what was every other month.”

The Naval Sea Systems Command plans on installing the fixtures aboard in combatant and amphibious ships over the next several years as part of the Navy’s maritime energy strategy.  The next ship up for the retrofit is the USS Preble (DGG88).

For Further Reading:

Armed with Science, USS Chafee is Now First Ship to Receive Complete LED Lighting Upgrade

LEDs Magazine, Energy Focus LEDs light US Navy ship top to bottom, http://www.ledsmagazine.com/news/9/1/5

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About Beth

It seems like LEDs are in everything these days – backlighting everything from your mobile phone, Apple iPad and flat screen HDTV to traffic lights, light bulbs and even the kitchen sink. But, making LEDs is a complex process that begins with the creation of sapphire. Not the pretty blue gemstone, but large commercial crystals that can weigh as much as 400 lbs. Once these large sapphire crystals are grown into boules and cooled, they’re cut into cores, cut further into flat circular wafers, polished and then used to grow LEDs. About 85 percent of HB-LEDs (high brightness) are grown on sapphire. There’s not that much information out there about the process. This blog is meant to shed some light (excuse the pun) on sapphire, LEDs and the industry that is devoted to making our lives just a little brighter. In the months ahead, we’ll tackle some topics that will help you understand a little more about sapphire and LED industry. Here’s a sample of what we’ll cover in the coming months: • Growing sapphire • For a wafer, size matters • Quality - When sapphire wafers go bad • LED light bulbs • Market & myths • Interviews with industry shining stars • Reports from industry events • Current events in perspective Please join us each week to learn more about sapphire and the LED market. We look forward to seeing you.

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