Zenigata LED and other LED Replacements for Halogen Spotlights

Domestic LED lighting is evolving at the sort of rate associated with electronic products - not surprising really since LED lights are in fact electronic devices. LEDs are light years (excuse the pun) ahead of traditional incandescent filament lighting technology which produces light by, well frankly setting light to a thin strand of metal; the glow as the filament burns represents at best about 10% of the energy input, the rest is wasted as heat. Even though domestic LED lighting is still a newcomer to the field there are two compelling reasons to believe it will very soon be the dominant technology used to light most homes. First incandescent lighting is being actively phased out already and by 2010 you will struggle to find any conventional incandescent light bulbs either to purchase or still in use. At present the main replacement product is the Compact Fluorescent Lamp (CFL) but the long list of issues related to CFLs effectively rules them out as any kind of long term solution; which leaves the hitherto largely overlooked LED in the spotlight so to speak as the future of mainstream lighting. Second the pace of development for LED lights, as already mentioned, parallels that seen with integrated circuits and related computer technology for essentially the same reason - LEDs are electronic devices. Moore's Law, which accurately describes the explosive growth of computer chips, has an LED equivalent, Haitz's Law, which states that the performance of LED lights improves by 20 times while the price drops by 10 times per decade. So how do things stand at present? Well, arguably leading the pack for all round domestic suitability right now is the Sharp Zenigata Series which has brightness levels of 80 lumens per watt (a conventional 40w incandescent bulb is about 360 lumens). So the Zenigata LED light bulb competes head to head with a conventional 60w spotlight which outputs 540 lumens, but instead uses only 6. 7 watts of power, or about 1/10th the energy cost. Oh and did I mention they last over 40, 000 hours which is a good 20 to 40 times longer than any other kind of light bulb. Since the cost of lighting is for all intents and purposes made up of the energy cost (the cost of the light bulbs is pretty much not a factor) you can immediately see the attraction and benefit to all of true energy saving LED lighting that unlike CFLs is also a genuinely green technology and delivers stylish lighting. Zenigata LEDs are also available in "color temperatures" ranging from 2, 800 to 6, 500 Kelvin's (in layman's terms, warm white through normal white to "high color rendering" white which is desirable in situations where accurate color depiction is needed, for example photography, retail display lighting, medical surgeries etc. The Zenigata LED is also especially effective as a direct replacement "retrofit" energy saving bulb for existing halogen spotlights. BriLux LED spotlights come in a variety of color temperatures ranging from 3500k warm white to 6000k cool white and for both GU10 mains and MR16 12v low voltage fittings. BriLux LEDs run cool with a lifespan of about 40, 000 hours (expect to get upto two decades use then) and are perfectly suited as retrofit replacements for existing 25w halogen lamps. The latest BriLux V3 6w LED light bulbs (containing 3 separate 2w LEDs, hence the name V3) are aimed at replacing halogen lamps in the 35w to 50w power range and have a decent beam angle of 40 to 60 degrees. Also worthy of attention is the Cree EvoLux Series which offers the EvoLux S and EvoLux R LED globe light bulb - the difference being that the Evolux R bulb is dimmable with its own built in dimmer that allows three preset light levels. The Cree Evolux R also stores the last dimmer setting and automatically resumes at the correct light level when turned on. The Cree EvoLux S and EvoLux R globe LED light bulbs are designed as direct retrofit replacements for standard 100w incandescent bulbs. Cree claim luminosity of 1, 000 lumens of brightness which is extremely bright by any measure, not just by most low energy lighting standards. It's no wonder Cree also offer the dimmable Evolux R version of this bulb. The need to actually dim low energy LED lighting down to more comfortable levels gives a clue as to how far and how fast LED technology has progressed of late. These Cree EvoLux LED globe replacements for 100w incandescent light bulb are powered by a 13w LED chip that is expected to last 50, 000 or more hours. This can create enormous savings in electricity costs (not to mention replacement costs) and even at the present relatively high price these Evolux LEDs represent an excellent return on investment thanks to nearly 90% saving on energy consumption. The Cree Evolux Series are made to fit a variety of regular screw and bayonet fittings and with a choice between warm white at 3000k and cool white at 6000k (most people would find warm white preferable for normal domestic use). There are also EvoLux Sh and EvoLux Rh variants that have reduced height clearance to suit situations where the bulb might otherwise be visible. 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