Electronics giant Philips is re-imagining the LED, working towards a light that would be closer to natural light or at least the “good” glow of the old incandescents. The concern with LED has been its “cold” blue-tinted light which has been stable regardless of intensity or dimming.
The company, working with Eindhoven University of Technology in the Netherlands, has developed an LED coating which adds red to the LED bulb spectrum as amps are decreased. The innovation grew out of observations that color shifts in LED bulbs occur with...
New Nobel physics laureate Shuji Nakamura never imagined that his revolutionary blue LED project would have such an impact on science and commerce, according to Optics.org. He explains that in a visit to Florida, his first trip outside his native Japan, he realized that he needed postgraduate qualification in order to have a successful research career. In Japan, that meant publishing five or six articles in reputable science journals. And so, in pursuing his PhD, Nakamura revolutionized the lighting world.
Using gallium nitride, earlier...
I, Dr. Bulb, love learning about LED technology, but sometimes the business side of lighting is interesting as well.
First, Toshiba’s American Lighting division pulled out of the market, deciding to largely focus on its domestic market in Japan. Recently, Samsung followed suit by exiting the LED lamp market and focusing on its domestic market in Korea, even after identifying its LED lighting sector as a key growth area just four years ago. Will this trend continue?
Many manufacturers of traditional lighting and manufacturers of electronics...
While there is controversy surrounding the conditions in factories located in developing countries, apparently LED lighting can help improve employees’ comfort.
In a report from the University of Michigan, LEDs are stated to help increase productivity in apparel and garment factories. LEDs produce drastically less heat than traditional forms of lighting, which produces a more comfortable working environment.
The study surveyed 25 garment factories in Bangalore, India and found that employees are more productive and absent less when they are...
The Vatican recently unveiled a new $2.3 million lighting and ventilation system for the Sistine Chapel, allowing visitors to view the ceiling close to its original glory.
For centuries, natural sunlight streamed through the windows of the Chapel, causing ultraviolet radiation to damage the masterpieces. The “Last Judgement,” along with other frescoes, have faded dramatically over the years. The sunlight was shut out in the 1980s, preventing any further damage for the 500-year-old artwork.
The lighting system, which is comprised of more...
The Pan-American Exposition was held on 342 acres in Buffalo, New York from May to November 1901. The exposition featured educational exhibits showcasing the latest advancements in technology, with electricity and electric lighting being a major feature. Below is a photo of a street light used at the Exposition.
A number of the Exposition buildings, including the prominent Electric Tower, were covered in incandescent light bulbs—a relatively modern invention at the time. At dusk, more than two million light bulbs were turned on...
In recent years, the value received by installing LED lighting products has sparked tremendous growth in the industry. Unfortunately, with this boom in growth, I have also seen poor quality products making it to the marketplace. In my experience, purchasers often require more in-depth knowledge when choosing the product that best suits their needs.
The first mistake many buyers make is having unrealistic expectations regarding the service life of an LED light. If a manufacturer estimates the service life of an LED at 100,000 hours, this does...
Every once in a while, a holiday comes along that I, Dr. Bulb, can get really excited about. One such holiday is The International Year of Light. Quite frankly, it doesn’t get much better than that.
The United Nations has designated 2015 as The International Year of Light and Light-based Technologies (IYL2015), a global initiative to celebrate the uses of light and lighting technology.
The year 2015 was chosen for several reasons. It is the centennial anniversary of Albert Einstein’s general relativity equations, something that could only...
It can get windy out there no matter where you are, but it can get especially gusty in coastal Florida and other similar high-wind zones. If you have pole-mounted fixtures lighting your parking lot, tennis court, or even just your backyard, things can get pretty interesting in areas like those during hurricane season.
Whenever Mother Nature gets herself all riled up and throws a major storm in our direction, the media serves up almost endless images of light poles swaying in the wind along with the inevitable examples of a few that couldn’t...
The National Association of Independent Lighting Distributors (NAILD) recently launched a revised version of their training program, the Lighting Specialist (LS1). As LED technology continues to evolve, training programs such as this are naturally forced to include the newest technology and skill sets required by the lighting industry.
An LS1 certification brings credibility to a professional and is a great idea for anyone wishing to become knowledgeable about lighting. This includes sales managers, electrical contractors and others working in...