MetaEfficient Reviews » Lighting

Liquid-Filled LED Bulbs: 360 Degree Light

Justin — Sun, 13 Sep 2009 20:53:53 +0000

Liquid-Filled LED Light Bulbs: HydraLux

I’ve been testing a new LED bulb called the HydraLux. These unique bulbs are filled with a clear liquid coolant (a non-toxic paraffin oil). Other LED bulbs use large metal fins or fans for cooling purposes. The advantage of using a liquid coolant is that the LED bulb can produce 360° light like a regular incandescent bulb. (more…)

The World’s Smallest Lightbulb

benjamin — Mon, 11 May 2009 16:52:03 +0000

The World’s Smallest Lightbulb (photo: Regan Group, UCLA)

As LED lights and fluorescent bulbs become increasingly mainstream, scientists at UCLA’s Department of Physics and Astronomy have developed a groundbreaking new variation of Thomas Edison’s incandescent light bulb. But don’t expect to find this bulb in your local hardware store anytime soon – unless you normally bring an electron microscope along to do your shopping.
(more…)

Efficient Organic LEDs Demonstrated

Justin — Fri, 17 Apr 2009 18:40:48 +0000

Organic light-emitting diodes (OLEDs) are a new type of LED where a thin film of organic compounds is used to produce electroluminescence. (more…)

Review: The Best LED Reading Lamps

benjamin — Tue, 14 Apr 2009 21:37:23 +0000

Review: The Best LED Reading Lamps

Nighttime can be prime reading time, and a small reading light is invaluable in a darkened room, or to avoid disturbing a roommate or spouse. The small size and directional light output of LEDs make them ideal for personal reading lights. Here are four of the best LED reading lamps, perfect for the bedroom, dorm rooms, or your favorite reading chair. All can be mounted on a table or bedframe – no more unclipping a book light at the turn of every page.

(more…)

The Best LED Desk Lamps For 2009

Justin — Sun, 01 Feb 2009 01:41:10 +0000

Well, LEDs are now dominating the flashlight market, but there’s only a handful of LED desk lamps available in 2009. Many LED desk lamps are designer lamps costing $300 and up. That’s unfortunate, because a desk lamp LED-based desk lamps have a lot going for them. Besides being energy efficient, LED lamps run much cooler than conventional desk lamps, and you can expect the LEDs to last for 10-15 years. Watch out for poorly made LED lamps though — I have an Adesso Lamp that lost 7 of its 20 LEDs in the first year. I see many other Amazon buyers had the same problem with this lamp.

(more…)

On Meta-Optimization

Justin — Sat, 10 Jan 2009 00:26:47 +0000

Optimize your meta-techniques.

New LED Light Bulbs Can Replace 100W Incandescents

Justin — Mon, 01 Dec 2008 02:18:40 +0000

Zetalux LED Light Bulb

I recently had the chance to test two state-of-the-art LED light bulbs from EarthLED. LED bulbs have many advantages over incandescents and compact fluorescent: they use very little power, they last 10 years or more, and they contain no hazardous substances. They are also tough: they can be dropped and turned off and on repeated without damage, they can operate in very cold or warm temperatures. (more…)

Sharp Introduces Earthquake-Detecting Solar LED Streetlights

Justin — Fri, 05 Sep 2008 01:13:37 +0000

Sharp is introducing a new range of solar-powered LED streetlights. These self-contained lights charge during the day, and switch on automatically when darkness falls. They can operate for 10 years straight without maintenance. They make use of new, high-intensity LED spotlights, which are ideal for public parks. The LEDs illuminate with a directed light and don’t send light into the sky (thus causing light pollution). The streetlights also feature a Seismic Motion Sensor that detects the occurrence of a major earthquake. If an earthquake is detected, the light turns on at full brightness during the night, to assist during possible power interruptions.

Via: Sharp Press Release

Motion-Sensing LED Lights: A Review

Justin — Wed, 30 Jul 2008 19:10:56 +0000

Motion-sensing LED lights — these lights are perhaps the most efficient lighting devices available today. They switch on whenever their infra-red sensors detect movement in a room — such as when someone begins to walk down a dark hallway. I’ve been testing them in my own home, and I’ve found them to be effective and non-obtrusive. At night, I’m able to go down two floors to the basement, without turning on any lights. The motion-sensing LEDs in the ceilings switch on as I move about the house.

(more…)

Office Building Lit With 100% LED Light

Justin — Mon, 28 Jul 2008 03:28:16 +0000

Last year, we featured a nightclub lit entirely by LEDs, but here’s an office building that is said to be the first to be lit by 100% LED light. The lighting was provided by the Netherlands-headquartered Royal Philips Electronics. To showcase the potential of LED light, Philips designed the lighting system to be warm and visually comforting. A total 422 LED fixtures were installed into the building’s false ceilings. The offices are lit with fixtures that incorporate 12-16 high power LEDs, each rated at 2.6 watts. LED spotlights are used to illuminate the corridors. (more…)