Our LED technology
In the last few years, new developments have produced numerous new types of lamp. Some were intended to revolutionise the market, but were short lived. Others were technologically good and are still with us today. LED technology is certainly not a passing trend: the technology has more than enough innovative potential. It opens up completely new opportunities for us to design with light.
Its cost-effectiveness and service life are convincing, and are also constantly being improved. The output and design of the modules are variable, and can be adapted perfectly to any luminaire. The sum total of the advantages that LED can already offer makes this technology a milestone in lighting technology. We use the superiority of LED in the development of new luminaires, but also in the technical perfection of existing luminaire series. In doing so, we go far beyond normal market implementation.
In the processing and selection of our LED components, we rigorously follow our own ideas and do not let ourselves be misled by other criteria commonly found on the market. To meet these goals, we have created all the necessary conditions, including the best production processes.
All BEGA LED luminaires are fitted with modules adapted exactly to them, produced on our own premises. We have control over all the materials used and therefore are not forced to enter any compromises. We alone are responsible for defining factors such as a luminaire’s light output, light colour and thermo-management, thus making a direct impact on the quality of our luminaires. Our LED modules are expected to reach the maximum possible service life. With this in mind, we are committed to using components of the highest quality, made exclusively of ageing-resistant materials. For example, we do not use any plastic lenses in our optical systems as their ageing resistance is doubtful. Instead we prefer durable materials such as glass, silicone and aluminium.
Service life of the modules
The ageing process in electronic components, in particular in light-emitting diodes, is a function of the temperatures they are exposed to in operation. The higher the temperature of the component, the shorter is the expected service life. In the development of our luminaires, therefore, thermo-management represents a great challenge. Besides using high-quality components, we have also taken design-related measures to guarantee favourable temperature conditions inside the luminaires. This leads to a significant increase in the service life of the LED. In addition, electronic protective equipment prevents the possible overheating of individual components. We have deliberately designed the temperature control in our luminaires to be very conservative – the temperatures in our LED modules are significantly lower than the maximum temperatures.
Our LED modules are designed for service lives of at least 50,000 operating hours. After this period has expired, the module is not destroyed; it continues to function, and still shines with at least 70 % of its initial brightness.
Unlike conventional lamps, for which there are clearly defined connection standards, LED are an integrative part of luminaires. It is difficult therefore for non-specialists to obtain matching LED replacement modules.As a responsible manufacturer, we have come up with a solution to this problem for our customers. Today you will already find a lamp designation in every LED luminaire, providing exact details of the installed modules. Furthermore, our in-house production will enable us to deliver matching LED modules for many years to come.
We guarantee the availability of replacement modules even 20 years after you purchase an LED luminaire from us.
Perhaps the technology and design of the components will have changed by then, but in their light colour and output, the replacements will definitely match the originally installed LED modules.Our LED luminaires are designed to enable these components to be replaced easily on site using standard tools. Suitable precautions have already been taken to protect against electrostatic discharge and accidental polarity reversal of the electronic components. The safe and economical further use of your LED luminaires is thus assured.
Light colour and output information
The colour temperatures of LED luminaires are specified in Kelvin (K).
As far as white light is concerned, we have defined two light colours as standard. We supply LED luminaires with:
• 3000 K, corresponding to “warm white”
• 4000 K, corresponding to “neutral white”
Our strict quality standards ensure that our LED modules have a maximum deviation of three MacAdam ellipses from the specified colour coordinates.
The figures quoted for output und luminous flux are nominal values, i. e. they are pure module luminous flux values. All current technical data, e. g. luminaire connected wattage and luminaire luminous flux, can be found in the instructions for use and data sheets issued for the luminaires. The data listed there are based on the “Guide to Reliable Planning with LED Lighting”, which was issued by ZVEI in November 2015.
The following diagram enables the luminous efficiency of LED to be compared with that of conventional lamps
(last revised: January 2016).
The International Electrotechnical Commission (IEC) has drawn up standards for the method of operation of LED luminaires and LED modules. These standards define quality criteria and generally valid measurement requirements for their comparative assessment. In this regards, the Lighting Division of the German Electrical and Electronic Manufacturers’ Association (ZVEI) published the second edition of its “Guide to Reliable Planning with LED Lighting” in November 2015.
The terms and explanations used on this website and in our catalogues, data sheets and instructions for use are based on this ZVEI publication.
The most important parameters are described below. Sometimes, we use other terms where they improve understanding. The corresponding terms used in the “Guide to Reliable Planning with LED Lighting” are then placed in brackets.
- Module luminous flux (nominal value)
The luminous flux (Φ) of an LED module measured in lumen (lm).
This value defines the luminous flux which is created by an LED module at an ambient temperature of 25 °C.
- Luminaire luminous flux (ZVEI rated luminous flux)
The luminous flux (Φ) of a luminaire measured in lumen (lm).
This value defines the total luminous flux which is emitted by the luminaire.
- Module connected wattage (nominal value)
The connected wattage (P) of an LED module measured in watts (W).
This value defines the power which is consumed by an LED module.
- Luminaire connected wattage (ZVEI rated input power)
The connected wattage (P) of a luminaire measured in watts (W). This value defines the total power which the luminaire consumes after thermal stabilisation.
This value covers all the installed components, e. g. LED module and operating device.
- Luminaire luminous efficiency
The luminaire luminous efficiency is the quotient of the emitted luminous flux and the electric power consumedby the luminaire. The value is expressed in lumen per watt (lm/W).
- Colour temperature
The term “colour temperature” is used for the light colour of white light. It is expressed in Kelvin (K).
The term warm white is used up to 3,300 K, neutral white from 3,300 K to 5,300 K, and daylight white over 5,300 K.
- Colour rendering index
The colour rendering index (Ra) stands for the degree of conformity between the perceived colour of an object and its appearance under a specific light source.
- Ambient temperature (ZVEI rated ambient temperature)
The ambient temperature (ta) defines the maximum temperature, measured in degrees Celsius (°C), at which a luminaire is allowed to be operated.
- Service life criteria
Most LED do not fail by a certain time but their luminous flux decreases over time (degradation). The service life of LED, LED modules and luminaires is limited accordingly by the total failure of their related electronic components (e. g. power supply units) or by the luminous flux dropping below a previously fixed minimum value.
The maximum electric rated voltage, measured in volts (V), at which a luminaire is allowed to be operated.
- Module designation
Unlike conventional lamps, for which there are clearly defined connection standards, LED are a fixed part of luminaires. It is difficult therefore for non-specialists to obtain matching LED replacement modules. As a responsible manufacturer, we have come up with a solution to this problem for our customers. Today you will already find a lamp designation in every LED luminaire, providing exact details of the installed modules. Furthermore, our in-house production will enable us to deliver matching LED modules for many years to come.