Incandescent lamps

in 1854 the clockmaker Heinrich Goebel constructed the first incandescent lamp. He enclosed a charred strip of bamboo in a glass bulb from which all the air had been evacuated. He connected the bulb to a battery and used this lamp to light his workshop in New York. In 1879 Thomas Alva Edison developed the incandescent lamp so that it could be produced on an industrial scale. He introduced the screw base to provide electrical contact. This is still used to this day and still bears his name. Like Goebel, he used a carbon fiber as the filament.

We replaced it by a much more stable metal filament. Since then, lamps have been continually improved and new technologies for generating light have been introduced.

 

The classic light bulb

The classic light bulb is one of Man's most important inventions. Artificial light is produced in a light bulb when electrical current passes through a fine wire, causing it to glow. Around five percent of the electrical energy consumed is converted into light. The rest is released to the surroundings as heat, which makes the light bulb relatively inefficient. Nevertheless the humble light bulb is extremely popular for its pleasant warm light.

 

Constantly developed and improved

The first carbon filament lamps achieved a luminous efficacy of only 1.7 lumen per watt. Today, the figure for our standard incandescent lamps in the CLASSIC series is up to seven times as high. Thanks to a special krypton filling in the SUPERLUX® KRYPTON lamp, the luminous efficacy here is even higher. A high-quality coating gives the lamp an elegant look without any glare.

 

Versatile: special designs

In addition to the our standard incandescent lamps manufactured in their millions day after day throughout the world, there is a wide range of lamps in a variety of shapes and sizes for special lighting applications and special requirements. Such as BELLALUX SOFT® for warm glare-free light in a variety of shades. Or the DECOR series with its unusual shapes and colors.

 

Light and sustainability

For the lighting industry the move to energy-efficient lighting has always been an evolution rather than a revolution. Our companyhas been promoting energy-efficient alternatives for more than 25 years (compact fluorescent lamps, halogen energy-saving lamps and light emitting diodes (LEDs)) and supporting global initiatives for more efficient lighting. In cooperation with the European Lamp Companies Federation (ELC), We has proposed a gradual phasing-out of less efficient light sources, including incandescent lamps. This initiative prescribes minimum requirements for light sources with Edison and bayonet bases on the basis of the standardized energy efficiency classes (A-G). As a result of this gradual approach the first groups of lamps (the higher wattages) would disappear from the market in 2009. In the transition phase the basic incandescent lamps would remain important products particularly for developing countries. In Europe around 55% of all the light fittings in the home are still equipped with incandescent lamps.

We characterized by its passion for light. This means that we want to offer our customers the best possible light sources for their particular applications. We are well aware that at present incandescent lamps are still the only solution for a large number of applications:

For applications in which shape and appearance play a major role even when the lamp is not switched on (decorative range, colored lamps).

For applications in which the lamps have specific uses, such as shockproof lamps, infrared lamps, TV lamps, special lamps for refrigerators, ovens, sewing machines and so on.

It is important to know that modern incandescent lamps do not contain any harmful substances (such as lead). This represents a considerable contribution to sustainability.

 

Lamps that needn’t hide their light

Artificial light is a major element of interior design - particularly if the lamps are visible. Bulbs can be designed so that they look as good as any attractive luminaire. Take, for example, LINESTRA® CLEAR with its unique linear and transparent design, or DECOR SILVER/GOLD with its silver or gold crown reflector, or CONCENTRA® SPOT reflector lamps with optimized reflector designs for perfect directional light and sharply defined accent lighting.

 

 

 

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