Incandescent Bulbs Return to the Cutting Edge

<http://www.nytimes.com/2009/07/06/business/energy-environment/06bulbs.html?_r=1>http://www.nytimes.com/2009/07/06/business/energy-environment/06bulbs.html?_r=1
 


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Jim Wilson/The New York Times

A standard incandescent bulb, left, and a more 
efficient one using Deposition Sciences technology.

By LEORA BROYDO VESTEL
Published: July 5, 2009

SANTA ROSA, Calif. ­ When Congress passed a new 
energy law two years ago, obituaries were written 
for the incandescent light bulb. The law set 
tough efficiency standards, due to take effect in 
2012, that no traditional incandescent bulb on 
the market could meet, and a century-old 
technology that helped create the modern world seemed to be doomed.


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<http://greeninc.blogs.nytimes.com/2009/07/06/the-incandescent-bulb-not-dead-yet/index.html>Green
 
Inc.: The Incandescent Bulb: Not Dead Yet

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Jim Wilson/The New York Times

Frank Becker of Deposition Sciences holding a 
tray of burners used to produce light more efficiently in incandescent bulbs.

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But as it turns out, the obituaries were premature.

Researchers across the country have been racing 
to breathe new life into 
<http://topics.nytimes.com/top/reference/timestopics/people/e/thomas_a_edison/index.html?inline=nyt-per>Thomas
 
Edison’s light bulb, a pursuit that accelerated 
with the new legislation. Amid that footrace, one 
company is already marketing limited quantities 
of incandescent bulbs that meet the 2012 
standard, and researchers are promising a wave of 
innovative products in the next few years.

Indeed, the incandescent bulb is turning into a 
case study of the way government mandates can spur innovation.

“There’s a massive misperception that 
incandescents are going away quickly,” said Chris 
Calwell, a researcher with Ecos Consulting who 
studies the bulb market. “There have been more 
incandescent innovations in the last three years than in the last two decades.”

The first bulbs to emerge from this push, Philips 
Lighting’s Halogena Energy Savers, are expensive 
compared with older incandescents. They sell for 
$5 apiece and more, compared with as little as 25 cents for standard bulbs.

But they are also 30 percent more efficient than 
older bulbs. Philips says that a 70-watt Halogena 
Energy Saver gives off the same amount of light 
as a traditional 100-watt bulb and lasts about 
three times as long, eventually paying for itself.

The line, for now sold exclusively at 
<http://topics.nytimes.com/top/news/business/companies/home_depot_inc/index.html?inline=nyt-org>Home
 
Depot and on 
<http://topics.nytimes.com/top/news/business/companies/amazon_inc/index.html?inline=nyt-org>Amazon.com,
 
is not as efficient as 
<http://topics.nytimes.com/top/news/business/energy-environment/compact-fluorescent-light-bulbs/index.html?inline=nyt-classifier>compact
 
fluorescent light bulbs, which can use 75 percent 
less energy than old-style bulbs. But the Energy 
Saver line is finding favor with consumers who 
dislike the light from fluorescent bulbs or are 
bothered by such factors as their slow start-up time and mercury content.

“We’re experiencing double-digit growth and we’re 
continuing to expand our assortment,” said Jorge 
Fernandez, the executive who decides what bulbs 
to stock at Home Depot. “Most of the people that 
buy that bulb have either bought a C.F.L. and 
didn’t like it, or have identified an area that C.F.L.’s don’t work in.”

For lighting researchers involved in trying to 
save the incandescent bulb, the goal is to come 
up with one that matches the energy savings of 
fluorescent bulbs while keeping the qualities 
that many consumers seem to like in 
incandescents, like the color of the light and 
the ease of using them with dimmers.

“Due to the 2007 federal energy bill that phases 
out inefficient incandescent light bulbs 
beginning in 2012, we are finally seeing a race” 
to develop more efficient ones, said Noah 
Horowitz, senior scientist with the 
<http://topics.nytimes.com/top/reference/timestopics/organizations/n/natural_resources_defense_council/index.html?inline=nyt-org>Natural
 
Resources Defense Council.

Some of the leading work is under way at a 
company called Deposition Sciences here in Santa 
Rosa. Its technology is a key component of the new Philips bulb line.

Normally, only a small portion of the energy used 
by an incandescent bulb is converted into light, 
while the rest is emitted as heat. Deposition 
Sciences applies special reflective coatings to 
gas-filled capsules that surround the bulb’s 
filament. The coatings act as a sort of heat 
mirror that bounces heat back to the filament, 
where it is transformed to light.

While the first commercial product achieves only 
a 30 percent efficiency gain, the company says it 
has achieved 50 percent in the laboratory. No 
lighting manufacturer has agreed yet to bring the 
latest technology to market, but Deposition Sciences hopes to persuade one.

“We built a better mouse trap,” said Bob Gray, 
coating program manager at Deposition Sciences. 
“Now, we’re trying to get people to beat a path to our door.”

With the new efficiency standards, experts 
predict more companies will develop specialized 
reflective coatings for incandescents. The big 
three lighting companies ­ 
<http://topics.nytimes.com/top/news/business/companies/general_electric_company/index.html?inline=nyt-org>General
 
Electric, Osram Sylvania and Philips ­ are all 
working on the technology, as is Auer Lighting of Germany and Toshiba of Japan.

And a wave of innovation appears to be coming. 
David Cunningham, an inventor in Los Angeles with 
a track record of putting lighting innovations on 
the market, has used more than $5 million of his 
own money to develop a reflective coating and 
fixture design that he believes could make 
incandescents 100 percent more efficient.

“There’s enormous interest,” Mr. Cunningham said. 
“All the major lighting companies want an 
exclusive as soon as we demonstrate feasibility.”

Both Mr. Cunningham and Deposition Sciences have 
been looking into the work of Chunlei Guo, an 
associate professor of optics at Rochester 
University, who announced in May that he had used 
lasers to pit the surface of a tungsten filament. 
“Our measurements show that the treated filament 
becomes twice as bright with the same power consumption,” Mr. Guo said.

And a physics professor at 
<http://topics.nytimes.com/top/reference/timestopics/organizations/r/rensselaer_polytechnic_institute/index.html?inline=nyt-org>Rensselaer
 
Polytechnic Institute, Shawn-Yu Lin, is also 
seeing improved incandescent performance by using 
a high-tech, iridium-coated filament that 
recycles wasted heat. “The technology can get up 
to six to seven times more efficient,” Mr. Lin said.

Despite a decade of campaigns by the government 
and utilities to persuade people to switch to 
energy-saving compact fluorescents, incandescent 
bulbs still occupy an estimated 90 percent of 
household sockets in the United States. Aside 
from the aesthetic and practical objections to 
fluorescents, old-style incandescents have the 
advantage of being remarkably cheap.

But the cheapest such bulbs are likely to 
disappear from store shelves between 2012 and 
2014, driven off the market by the government’s 
new standard. Compact fluorescents, which can 
cost as little as $1 apiece, may become the 
bargain option, with consumers having to spend 
two or three times as much to get the latest energy-efficient incandescents.

A third technology, bulbs using 
<http://topics.nytimes.com/top/reference/timestopics/subjects/l/lightemitting_diodes/index.html?inline=nyt-classifier>light-emitting
 
diodes, promises remarkable gains in efficiency 
but is still expensive. Prices can exceed $100 
for a single LED bulb, and results from a 
government testing program indicate such bulbs 
still have performance problems.

That suggests that LEDs ­ though widely used in 
specialized applications like electronic products 
and, increasingly, street lights ­ may not 
displace incumbent technologies in the home any time soon.

Given how costly the new bulbs are, big lighting 
companies are moving gradually. Osram will 
introduce a new line of incandescents in 
September that are 25 percent more efficient. The 
bulbs will feature a redesigned capsule with 
higher-quality gas inside and will sell for a 
starting price of about $3. That is less than the 
Philips product already on the market, but they 
will have shorter life spans. G.E. also plans to 
introduce a line of household incandescents that 
will comply with the new standards.

Mr. Calwell predicts “a lot more flavors” of 
incandescent bulbs coming out in the future. 
“It’s hard to be an industry leader in the 
crowded C.F.L field,” he said. “But a company 
could truly differentiate itself with a better incandescent.”


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