Standard incandescent lamps convert almost all the power they consume into radiation (basically, heat). Unfortunately, only about 5% of this emission is in the visible spectrum, making them very inefficient light sources. On the other hand, since almost all the power is radiated away, there is little need for thermal management. LEDs put 100% of […]
Displays
Top Ten Myths of LEDs: #7 – “LEDs have high glare”
I’m standing in the taxi queue at Chicago’s O’Hare airport, having to squint ahead to gauge my wait. The cause of my discomfort: a horrible, blue-LED array-based outdoor luminaire ahead of me and above, spilling light in all directions and casting a putrid smear of yellow-green color against a nearby wall of the terminal, and […]
Top Ten Myths of LEDs: #8 – “LEDs are best left to China”
I have been in the LED business for almost twenty years, and each year I hear a comment along the lines of “LEDs are a commodity product”. What’s the definition of a commodity product? It’s one that is very cheap, undifferentiated, anybody can make it, and margins are low. And each year, I look at […]
Top Ten Myths of LEDs: #9 – “LEDs are expensive”
“Ten bucks for a light bulb?!”, exclaims my daughter in response to my estimate of the ‘tipping point’ price for LED-based lighting products for the residential consumer. She, like many consumers, has yet to internalize that the real cost of ‘inexpensive’ conventional light bulbs is energy consumption, and that LEDs pay back on this aspect […]
Top Ten Myths of LEDs: #10 – “LEDs are dangerous”
Any time a new, disruptive technology enters the public sphere, concern is raised about almost every conceivable aspect. This is especially the case for lighting wherein each and every one of us has a base of experience and, likely, some opinions. While it is certainly prudent to scrutinize any new technology from a health and […]
Rugged LCD monitor ideal for industrial applications
Stealth.com has released a new 26″ Panel Mount LCD monitor, featuring a high definition widescreen 16:9 format with 1080p resolution (1920 x 1080). The Stealth model SV-2600W-PM is Stealth’s largest rugged industrial monitor to date. The LCD is environmentally sealed to NEMA 4/IP65 specifications providing maximum protection from dirty, wet and hostile operating environments. The […]
LED GU24 lamp acts as replacement for 13W CFL
Introducing a new bulb that is highly energy efficient, provides loads of lumens, and is pleasant to behold. The Verde Series LED GU24 direct replacement lamp by American Illumination need not be hidden in today’s lighting designs (unlike the lamp it is replacing – the 13W compact fluorescent). Part of the company’s new Verde Retrofit […]
Intelligent street lights adapt to conditions in Finland
VTT Technical Research Centre of Finland has developed a dimmable LED street light that consumes significantly less energy than current lighting systems, while improving the lighting characteristics. The street lights were tested in Helsinki with user experiences collected. Traditional street lights work on full power when turned on, and the amount of light is not […]
State of the display market
We rely heavily on display technologies to interface with our appliances, personal communications devices, our cars, and industrial equipment. We’re also demanding more from displays such as smaller size, higher resolution, interactivity, and even the ability to bend. All the while, we expect power consumption and costs to be minimal. In response, vendors are producing […]
Dual-color lasers could lead to cheap and efficient LED lighting
A new semiconductor device capable of emitting two distinct colours has been created by a group of researchers in the US, potentially opening up the possibility of using light emitting diodes (LEDs) universally for cheap and efficient lighting. The proof-of-concept device, which has been presented today, 3 May, in IOP Publishing’s journal Semiconductor Science and […]
