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LED lighting devices experience significant energy loss during AC-DC power conversion, electro-optical conversion (electroluminescence), and wavelength conversion. Unlike conventional technologies, in LEDs, all energy losses in the light emitting process are expelled as heat. This presents a major engineering challenge where more than half of the power input is converted...

Polymethyl methacrylate (PMMA) is a transparent and rigid thermoplastic material. PMMA is also known as acrylic, acrylic glass and plexiglass. It is widely used in the production of lenses, diffusers and light guides in the lighting industry, as it provides high light transmittance.

PAR is an abbreviation formed from the initials of the words Parabolic aluminized reflector. PAR lamp is a type of lamp widely used in commercial buildings, residences and transportation vehicles. PAR lamps are used in the headlights of old vehicles, exterior lights of vehicles such as trains and airplanes, and...

LDR (photoresistor) and photodiode are two types of light sensors commonly used. When the LDR is exposed to light, its resistance changes. The photodiode, on the other hand, produces current when exposed to light. This is the main difference between LDR and photodiode.

Light consists of small packets of energy called photons. Light energy is a form of electromagnetic radiation and is the only form of energy visible to the human eye. Light energy travels in waves and is very fast. The sun, stars, lamps, lasers, and hot objects are examples of light...

Capacitors and supercapacitors are passive components that store energy in the form of an electrostatic field. Although the function of both is to store energy, there are some important differences between them. Supercapacitors can store more charge than regular capacitors and provide energy much faster than a battery.

White light used in homes, offices and outdoors affects people's biological clock and disrupts sleep patterns due to the high blue light it contains. High and prolonged exposure to white light causes toxic stress on the retina, negatively affecting visual performance.

Devices that can measure the temperature of objects remotely and quickly without any contact are called infrared thermometers. Infrared thermometers collect infrared light emitted from objects and estimate their temperature based on the amount of energy. These devices are frequently used in industrial applications as well as preferred by home...

The 11th Amsterdam Light Festival will take place from December 1, 2022, to January 22, 2023. This year's topic is Imagine Beyond. The 20 selected ideas among hundreds of concepts prepared within the scope of the theme will be exhibited on the city's canals at the festival.

In the lighting industry, lamps in which the brightness of the light can be controlled are called dimmable. Dimmable lamps make it possible to control the level of illumination, change the visual appearance of the space and save energy.

The Light + Building took place between October 2-6 this year, and the new calendar is 3-8 March 2024. It would be correct to say that this year was not good as the previous ones, as the number of exhibitors and visitors is much lower than last years.

Italian physicist Galileo Galilei made a simple experiment with the help of lanterns in 1638. He and a friend each took a lantern and drove miles apart. As soon as one of them signaled with the lantern, the other gave the signal to him. Galileo divided the distance between two...

In the development of LED technology, it was initially planned to produce a single type of LED, but over time it was realized that this was not a viable approach. With the technological developments, different types of LED packages have emerged. TH LED, Mid-power LED, High-power LED, COB (Chip-on-board) LED,...

Kinetic energy is the energy possessed by an object in motion. Potential energy, on the other hand, is the energy that an object has because of its position or state. This is the main difference between kinetic energy and potential energy.

Symmetrical lights distribute light equally in all directions. Asymmetrical lights concentrate the light in one direction. This is the main difference between symmetrical and asymmetrical lighting. In indoor and outdoor lighting applications, it is extremely important to choose the right light distribution and angle in order to minimize glare, improve...

Flux is a chemical used when soldering electronic components to a circuit board. The main purpose of flux is to prepare the surface for soldering by cleaning the oxide and foreign materials on the metal surfaces. Flux is used to clean the circuit board before soldering. During soldering, it helps...

Light + Building International Lighting and Building Services Technology Fair, which was not possible to take place in 2020 due to the pandemic, is opening its doors to its visitors again in Frankfurt between 2-6 October this year.

A photovoltaic cell, PV cell, solar cell, or solar cell is a component that produces electricity when exposed to light. The photovoltaic cell is made of semiconductor materials that absorb the rays emitted by the sun and generate an electric current. A solar panel is formed by bringing together more...

It is very important to position the lighting fixtures in order to illuminate the streets, roads and pavements correctly. No matter how bright lamps are used, the desired performance cannot be achieved if the lighting fixtures are not properly positioned.

Light measuring devices called lux meters can measure with high precision in a wide measuring range. But when it comes to LEDs things get a little more complicated. Different brands and models of lux meters may take different measurements at the same point.