High intensity discharge (HID) lamps

High-intensity discharge lamps are the most efficient light sources. They provide an extremely large amount of light from a very small space. For example, a 2000 W metal halide lamp, such as the ones installed in football stadium floodlights, theoretically produces as much light as one 10,000 W incandescent lamp. The area in which the light is produced is no larger than a 2 euro coin. Other advantages of modern high-pressure discharge lamps include low thermal output, excellent color rendering and long life. What’s more, because of the compact dimensions of these lamps, their light can be easily and accurately directed.

 

Consequently, high-pressure discharge lamps are the light sources of choice

  • wherever products and objects need to be presented in brilliant light and true colors, such as in shop windows and retail outlets

 

  • wherever energy efficiency and long life are important, for example in factories, sports stadiums, street lighting and horticultural lighting.

 

 

High luminous efficacy as a matter of principle.

High-intensity discharge lamps operate on the basis of the arc discharge. There is a constant arc between two electrodes that causes the filling to give light. This principle can be used with different metals and filler materials. Our range includes metal halide lamps, sodium lamps and mercury vapor lamps. Almost all discharge lamps need control gear to ignite them and limit their current.

 

Metal halide lamps.

The addition of metals and iodides greatly improves the color and luminous efficacy of POWERSTAR® HQI® lamps. With their extremely short discharge arc, they come very close to the ideal of a point light source, which means their light is very easy to direct exactly where it is needed, and they offer a high utilization factor. POWERBALL® HCI® lamps represent a further development of POWERSTAR® HQI® metal halide lamps, our most successful metal halide lamps. They are fully compatible with the corresponding HQI® lamps. Their constant color throughout their lives, their luminous efficacy and their color rendering are all excellent. With its round ceramic discharge vessel, patented by our company, it provides even better performance than its cylindrical counterparts in terms of light, color and stability.

 

Optimum operation with electronic control gear.

The system reliability, comfort and economy of 20, 35, 70 and 150 W HQI®/HCI® lamps are considerably improved if the lamps are operated with POWERTRONIC® ECG.

 

VIALOX® NAV® high-pressure sodium lamps.

VIALOX® high-pressure sodium lamps provide the highest luminous efficacy of all high-pressure discharge lamps - up to 150 lumens per watt.

 

Their principal benefits are as follows:

  • Extremely high luminous efficacy
  • Extremely long life

 

 

They are the most economical light sources in general lighting that enable the human eye to distinguish between colors. We has developed a large range of high-pressure sodium lamps.

 

They are available in three complete VIALOX® NAV® families:

  • NAV® with high reliability and economy
  • NAV® 4Y® with highest reliability and economy

 

  • NAV® SUPER 4Y® with outstanding luminous efficacy and highest reliability

NAV® 4Y® − technology that takes us into the third millennium. With our new VIALOX® NAV® 4Y® lamps it is possible to prolong the period between group exchanges of high-pressure sodium lamps in street lighting to four years. Innovative arc tube design, high-performance ceramics, shock absorbers and the most up-to-date manufacturing processes such as laser welding are all combined to produce virtually perfect arc tubes every time. Longer maintenance intervals and a reduction in premature failures add up to considerable savings in relamping costs. The best performance is achieved by VIALOX® NAV® SUPER 4Y® lamps. The luminous flux of the lamp is up to 20% higher than that of conventional high-pressure sodium lamps. New and upgraded lighting systems can be operated most economically with VIALOX® NAV® SUPER 4Y® lamps.

 

HQL® mercury vapor lamps.

 

HQL® mercury vapor lamps are often used as light sources because of the low investment costs. They need a control gear but not an igniter. Because of their low efficiency, mercury vapor lamps consume much more electrical energy than, for example, metal halide lamps or highpressure sodium lamps. High-pressure mercury vapor lamps are used primarily for street and factory lighting.

 

 

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