PESWiki.com -- Pure Energy Systems Wiki -- your publicly editable site about new energy technologies. Power to the people!





Directory:Light Emitting Diodes

From PESWiki

Directory of technologies and resources relating to LEDs.

Light Emitting Diodes (LEDs) have been around for years. Many people are familiar with the scrolling signs and clocks that use LED technology to provide information. Recent developments indicate that LEDs might someday replace light bulbs. This is desireable because LEDs may become much more efficient than light bulbs, which would save tremendous energy on the consumption end of the equation. Using electricity more efficienty will become especially important if oil runs low and we turn into a mainly electric-based economy for our transportation needs.

Unlike ordinary incandescent light bulbs, LEDs don't have a filament that will burn out, and they don't get especially hot. They are solid state (no moving parts), illuminated solely by the movement of electrons in a semiconductor material, and they last just as long as a standard transistor (which is many times longer than a traditional light bulb).

Several products are beginning to emerge, but the cost factor is still much too great to see them emerge into the general landscape of energy appliances.

Table of contents
1 Companies
2 Cost Comparison
3 Do It Yourself
4 Videos
5 In The News
6 Resources
7 See Also
[edit]

Companies

  • Cyberlux (http://www.cyberlux.com/) - Cyberlux’s lighting systems are less expensive than conventional bulbs or tubes by 200% in total cost of ownership. They consume 92% less energy than incandescent bulbs and 30% less than fluorescent. Cyberlux is developing Hybrid Organic/Inorganic (http://news.com.com/Cheaper+LEDs+to+light+a+green+path/2100-1008_3-6151515.html?tag=ne.fd.mnbc) white-light LEDs that would both cost substantially less to manufacture and provide more light than conventional LEDs.
  • Carmanah Technologies Corporation (http://www.carmanah.com/) - Solar-powered LED lighting and illumination products can significantly reduce on-grid energy use and operate reliably year round with little or no maintenance. Products (http://www.carmanah.com/content/products/default.aspx) available for airfield markers, obstructions, marine navigation, railways, hazard marking, roadway signals, bus stops and shelters.
  • The LED Light Inc (http://www.theledlight.com/120-VAC-LEDbulbs.html) LEDs in 120/240vac Bulbs
  • superbrightleds (http://www.superbrightleds.com/led_prods.htm) - LED 12 volt car bulbs, household Edison base bulbs, utility lights, flashlights
  • Lighting Science Group (http://store.lsgc.com/) - Optimized Digital Lighting technology is efficient - up to 80% less energy and lasting up to 50 times longer than incandescent bulbs. LED light bulbs, LED candles.
  • Sundance Solar Products (http://store.sundancesolar.com/120voacledre.html) - 120 Volt AC LED Replacement Household Light Bulbs
  • Canada LEDs (http://www.canadaleds.com/) - Lamps, strip lighting, flashlights, strip lighting, ceiling lights
  • LEDtronics (http://www.ledtronics.com/) - Mission Statement: To Replace Energy Wasting Lighting With World Class Environmentally Responsible LED bulbs and Products.
  • EarthLED (http://earthled.com/evolux_led_light_bulb.html) - EarthLED offers the most varied selection of direct replacement LED Light Bulbs in the industry.
  • Enlux Corporation (http://www.enlux.net/) Drop-in LED replacement for your 45 to 60W bulb
  • Gallium Lighting (http://www.galliumlighting.com/) High performance architectural LED downlighting
  • BlueStar Lighting (http://deseretnews.com/article/1,5143,695275525,00.html) - Utah company is producing an incandescent-replacement bulb that will cost around $50.00. With energy savings, the ROI is around five years. (Deseret News; May 4, 2008)
  • IntenCity Lighting (http://www.intencitylighting.com/) - The IntenCity LED Streetlight replaces 100 watt High Pressure Sodium luminaires for half the energy. It is maintenance free, has a long life and reduces light trespass and glare.
  • Lighting Science Group (http://www.lsgc.com/) - Energy efficiency. Environmental responsibility. Economic value. That's the Lighting Science EcoAdvantage. They provide the quality of light that improves people's lives … and making a meaningful impact on our environment and our future.
  • Lamina Ceramics (http://www.laminaceramics.com/) LED light sources of various sizes, colors and strengths.
  • Marktech Optoelelctronics (http://www.marktechopto.com/) - LEDs & LED Drivers.
  • SELED (http://www.set-system.com/) - a new product line of warm color leds that can be used for indoor and outdoor lighting.
  • TIR Systems (http://www.tirsys.com/) - Lexel™ is the first fully integrated and seamless LED-based light source technology. It has been designed for easy integration and is equivalent to lamp+ballast+socket. It provides controllable illumination, precise light output and color, and dramatic savings, with the potential to use up to 80% less energy than conventional light sources.
  • C. Crane Company for LED Light Bulbs (http://www.ccrane.com/lights/led-light-bulbs/index.aspx/)
  • East Power Development Ltd (http://www.ablamp.com/) - LED Floodlight bulb saves money and energy. Replace your energy-sapping incandescent floodlights with the. Par30 Spotlight Bulb (http://www.ablamp.com/LED_PAR30_LED_Light_Bulb_full.html) Long Life: 100,000Hours Easy Installation Using Existing Socket,low cost maintenance, power saving No flickering effect,Ideal replacement for halogen lamps.
  • SuperBulbs (http://www.superbulbs.com/) - Unlike other LED bulbs that have very dim light (like a night light, or fun light, or party light) or have a beam output (like a flashlight) or have unpleasing colors (like bluish tinge), SuperBulbs™ have light like a traditional bulb. They fill the room with a pleasant, naturally dispersed light.
[edit]

Cost Comparison

This cost comparison is for informational purposes only. It is intended to demonstrate how LED lights could save money and be practical in real world applications. It will be modified as the actual costs of traditional lighting vs. LED lighting is further refined.

Let's say a traditional 60 Watt light bulb costs $1 and requires replacement every 9 months (the cost of the new bulbs will rise over time). But, an equivalent 60 Watt LED costs $12 and requires replacement every 10 years (realistic from what I've read). That means you'd have to buy 13 light bulbs in that period at a cost of $13. So, just on the equipment costs you'd save $1 with LEDs. Then factor in a LED 60 Watt light that uses 1/6th the electricity (not yet available, but possible in the future as the recent RIT announcement demonstrates) and you're talking about real savings.

Note: Currently LED lights use about half the energy that is used in traditional incandescent lighting. That's not even as efficient as compact fluorescent lighting, which is why LEDs have been slow to be adopted into the marketplace. The exception is for colored lighting, where incandescent lights must be fitted with color filters which waste most of the light. Single color LED's emit only the desired light, so they can be 5 times as efficient as filtered incandescent lighting. LED's are quickly taking over the colored light market, like traffic lights, automotive tail lights, etc.

But, if white LEDs can be made to be six times as efficient in electricity use as traditional incandescent lighting (as RIT's recent announcement indicates), then they'll surpass fluorescent lighting efficiencies and will obviously be far less costly to operate than traditional incandescent lighting.

Let's say the light bulb in question uses $100 worth of electricity over ten years. The LED would only use only $16 worth of electricity over that same ten year period. $84 in savings over ten years or $8.40 per year.

Now multiply that by all the lights in your house and you can see why some are predicting the end of the light bulb era and the beginning of the LED lighting era. A 1,200 sq. ft. house (a typical 2 bedroom house) might have twenty (20) 60-watt light bulbs in use. Now we're talking about saving $168.00 per year in electric lighting costs. Higher end homeowners, say people who have 2,400+ sq. ft. house (a typical 4-5 bedroom house) would save $336.00 per year in electric lighting costs. That's significant savings for a homeowner. A business that uses far more electricity would see even more dramatic savings in their electric bill, and wouldn't have to employ people to constantly change lights either.

[edit]

Do It Yourself

  • DIY Solar Lantern (http://www.unpluggedliving.com/diy-solar-lantern/) - A step-by-step walkthrough on creating a Solar Lantern using LEDs and a solar cell. (Unplugged Living; May 1, 2008)
[edit]

Videos

(2.58 MinutesEarthLED EvoLux Challenge - How to Replace a 100 Watt Light
Comparison of the breakthrough EarthLED EvoLux with 100 Watt Incandescent and 13 Watt CFL in a variety of tests. (You Tube (http://www.youtube.com/watch?v=z5ppqz6zGCE) April 12, 2008)

[edit]

In The News

  • 13W LED Bulb Replaces 100W Incandescent (http://www.treehugger.com/files/2008/04/13w-led-bulb-replaces-100w-incandescent.php) - a 13W CFL, and can apparently last as long as 50,000 hours. The price point is still high, coming out at a whopping US$109, but for those early adopters who just hate changing light bulbs, this might be worth a try. (TreeHugger; April 22, 2008)
  • Lighting Science Group launches portfolio of LED replacement lamps (http://www.ledsmagazine.com/press/16089) - Lighting Science Group (OTC BB: LSCG) (LSG), a leading developer and manufacturer of intelligent and energy-efficient light emitting diode (LED) lighting solutions, has launched the industry’s widest line of replacement LED lamps for both commercial and residential lighting applications. (LEDs Magazine; April 9, 2008)
  • micro LED (http://www.news.com/8301-10784_3-9880704-7.html?tag=more) - William Henry has developed a 15-micron LED that operates on nanoamps of power at the Tyndall National Institute in Cork, Ireland. (C|Net News; Feb 27, 2008)
  • Martin Schubert develops polarized LED (http://news.rpi.edu/update.do?artcenterkey=2406&setappvar=page(1)) - The invention could advance the effort to combine the power and environmental soundness of LEDs with the beauty and clarity of LCDs and replace Compact Fluorescents. (Rensselaer Polytechnic Institute"; Feb. 28, 2008)
  • New antireflection coatings for solar cells and LEDs  (http://www.technologyreview.com/Nanotech/18265/) - Researchers have developed a new type of nanostructured coating that can virtually eliminate reflections of a wide range of wavelengths to 10 times less than current coatings. It would increase solar cell light absorption by a few percentage points and a 40 percent improvement could be seen in LEDs. (MIT Technology Review; Mar. 06, 2007)
  • 9W LED Bulb Replaces 70W Incandescent (http://www.treehugger.com/files/2007/02/led_bulb_replac.php) - 9 watt LED bulb outputs 308 lumens using 150 warm white LEDs, replacing a 70 watt incandescent bulb. There's also a frosted version that outputs about 594 lumens. The bulbs cost between $60-$70 each, and you can find them at X-Treme Geek (http://www.x-tremegeek.com/templates/searchdetail.asp?productID=11880&ta=detail_img&pi=Y&st=3) and Cyberguys (http://www.cyberguys.com/templates/searchdetail.asp?productID=14026&sk=MC51419). (TreeHugger; Feb. 8, 2007)
  • October 20, 2005 Take an LED that produces intense, blue light. Coat it with a thin layer of special microscopic beads called quantum dots. And you have what could become the successor to the venerable light bulb. The resulting hybrid LED gives off a warm white light with a slightly yellow cast, similar to that of the incandescent lamp.
Quantum dots that produce white light could be the light bulb’s successor - LEDs (http://exploration.vanderbilt.edu/news/news_quantumdot_led.htm)
  • May 3, 2005 A Cambridge University scientist is making a material that he and others believe could help to cut emissions of carbon dioxide and other greenhouse gases by 15 per cent -- by making low-voltage, longer-lasting and more efficient light bulbs (LEDs). UK scientist's bright idea to fight global warming - LEDs (http://www.expressindia.com/fullstory.php?newsid=45912)
  • April 14, 2005 - LED lamps were unthinkable until the technology cleared a major hurdle just a dozen years ago (being able to deliver white light). Since then, LEDs have evolved quickly and are being adapted for many uses, including pool illumination and reading lights. Development of LEDs is brisk, and the Department of Energy has estimated that LED lighting could cut national energy consumption for lighting by 29 percent by 2025. The total savings on U.S. household electric bills until then would be $125 billion. Current white LEDs will last up to 50,000 hours, about 50 times as long as a 60-watt bulb. That's almost six years if they're on constantly. LED Evolution Could Replace Light Bulbs (http://news.yahoo.com/news?tmpl=story&u=/ap/20050415/ap_on_hi_te/led_lighting_8)
  • April 12, 2005 – Lamina Ceramics, Inc. today announced the launch of a new, advanced multi-color line of super bright, high output light engines driven by light emitting diodes (LEDs). Smaller than a U.S. nickel and about as bright as a 20-watt light bulb, each BL-4000 light engine is a disk-like array containing 4-6 individual LEDs, de-pending upon color. Progress toward making LEDs as bright as incandescent bulbs was hindered because of heat build-up within their electronic circuits. Heat build-up reduces LED light output, shortens lifespan and eventually causes the devices to fail. Lamina Ceramics has solved this problem with a proprietary packaging technology which allows multiple LEDs to be densely clustered to achieve exceptionally high levels of light in very small footprints. Lamina Ceramics Launches Super-Bright LED Light Engines (http://www.laminaceramics.com/news/040805.aspx)
[edit]

Resources

[edit]

See Also

- Other "Directory" listings
- PESWiki home page

Retrieved from "http://www.peswiki.com/index.php/Directory:Light_Emitting_Diodes"
Related

for sale . . .

for businesses . . .


more