Category Archive: Lighting Terminology

Rated Life and Lumen Maintenance Life: Know the Difference

When dealing with LED lighting sources, the definition failure can be very broad. There are scenarios where it is obvious, for example if a fixture is damaged beyond repair by an electric fault. However, light sources also suffer a deterioration of their luminous output over time, and a fixture that can no longer provide enough […]

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Maintenance Savings with LED Lighting

LED products are often advertised based on their direct energy savings, but that is only one of many benefits they offer. Other than being energy efficient, LED lighting is characterized by being robust and having a long service life, which translates into significant maintenance savings over the service life of an installation. LED Lighting Lasts […]

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TM-30 Standard: Enhanced Lighting Characterization Over CRI

Currently, the Color Rendering Index (CRI) is the standard metric used by the lighting industry to characterize how faithfully a light source renders the true colors of an object. A disadvantage of the CRI is that it condensates color rendering performance into single value, which limits the information that is provided. The CRI also penalizes […]

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Laser Lighting: The Potential Successor of LED Technology

One thing that characterizes technology is constant evolution, and lighting fixtures are no exception. New technologies constantly emerge, offering superior performance than the products they replace, eventually displacing them from the market. At the moment, LED lighting represents the state of the art in the lighting industry. However, according to Dr. Shuji Nakamura, laser diodes […]

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How to Level the Playing Field with Lumen Output Claims

Key decisions in the lighting design process depend on access to reliable data about the proposed light source. Before specifying luminaires and their locations, lighting designers must consider aspects such as power consumption, lumen output, color temperature and the way in which light is distributed in 3-dimensional space. For instance, a luminaire that will be […]

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Types of Dimming Systems for Lighting Fixtures

Replacing older lamps with newer and more efficient technologies is a straightforward method for saving energy. However, it is possible to achieve further savings with dimming technology, which is capable of reducing the luminous output of a lamp whenever the full output is not required. This results in a reduction in the power drawn by […]

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24/02/2016   /   , , , ,

Testing Procedures to Determine the Rated Life of LED Products

Testing Procedures to Determine the Rated Life of LED Products

The second largest benefit of LED lighting after energy savings is a reduction in maintenance expenses due to the long service life offered by the technology. For instance, a residential LED bulb typically lasts around 25,000 hours, which is more than 20 times longer than the service life of incandescent bulbs, and 2 to 3 […]

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Who makes LEDs, and How?

It is a well-known fact that LEDs are energy efficient and that they allow a great degree of design flexibility with respect to color temperatures and luminaire optics. However, despite all the marketing effort that has been carried out to promote LED lighting, the manufacturing process that makes this technology possible is not common knowledge […]

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08/02/2016   /   , , , , ,

How to Choose the Correct LED Bulbs to Retrofit your Home Lighting?

How to Choose the Correct LED Bulbs to Retrofit your Home Lighting?

Most LED bulbs used in residential lighting have the advantage of being designed for the same sockets as older incandescent and fluorescent bulbs. However, this can be misleading: an LED bulb may fit into the same socket as the lamp which is replaced, but that does not necessarily mean it is a suitable upgrade. In […]

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Why Blue Light Should Be Avoided During Night Time

With the advent of energy efficient types of lighting, such as fluorescent and LED lamps, there has been in a change in the colors of light which are most commonly used. The incandescent bulb is characterized by its warm and yellowish light, similar to that of candles before the invention of commercial electric power. However, […]

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18/01/2016   /   , , ,

Li-Fi: Lighting and Internet Connection with a Single Device

Li-Fi: Lighting and Internet Connection with a Single Device

Li-Fi is a technology which seems to come straight out of science fiction: it is based on the principle of using light to transmit data, which could potentially allow internet access points and lighting fixtures to be merged into a single device, namely a Li-Fi luminaire. This technology could be used to transmit data 100 […]

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How Photometric Data Files Make Lighting Simulation Possible

Have you ever wondered how lighting design software is capable of simulating a specific model of luminaire? After all, the luminous output of a lamp is not spread equally in every direction: for example, an exposed lamp will illuminate very differently than a lamp of the same lumen output enclosed in a reflector. A computer […]

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