Frequently Asked Questions
LED is short for “light emitting diode”. An LED is a semiconductor that converts electrical energy directly to light through the movement of electrons. LED produce light around 80% more efficiently than traditional incandescent light bulbs.
LEDs have no gases, filaments and no moving parts to fatigue. They provide light through a one-step process that takes place within the diode. There is no glass to break or screwed contacts to loosen.
Although the initial cost of conventional light sources is less than LEDs, the operational and maintenance costs of LED are significantly lower. LEDs, having a longer life, reduced maintenance and lamp replacement cost. Because LEDs need to be replaced less frequently, the owner spends less on new lamps and the labour needed to change them. LEDs also consume less energy; thus the overall cost of a LED system can be significantly lower than that of conventional lighting systems.
LEDs can produce concentrated beams at specific frequencies of light. LEDs can be designed to emit specific parts of the light spectrum that activate certain photoreceptors in the plant mimicking the sun without the UV rays. For example, blue light promotes phototropism and cryptochromes which help germination and elongation of the plant, while red light stimulates phytochromes which help the plant to flower at the optimum time. Regulation of the spectrum of light based on the plants life cycle promotes faster growth, and a stronger plant than what would be produced under sunlight conditions.
LEDs do not emit ultra-violet light and do not carry heat in the beam, unlike their conventional counterparts. This helps keep food fresher in refrigerators and cold stores.
In retail and display environments where the range of products change by the season, the colours can be changed to match the type of product on display. For example, electronic goods may require a cool white light while a warmer tone may be required for fabrics. When a fashion season has blue as a theme, the store can utilize a colour of light with more blue in its spectrum to enhance and bring out the vibrancy of the display.
LEDs have the capability to offer “biologically optimized” solutions that simulate the colour temperature of the sky. These have been proven to improve concentration and maintain alertness of students in classrooms. One way of creating the appropriate colour temperature is by using a combination of independently controlled blue and white LEDs.
A vapour-tight is an LED light fixture designed to keep out dust and water from entering. Vapour tights provide very powerful lighting in harsh environments. Not to be confused with vapour proof lighting. Vapour proof lighting fixtures are designed to protect against hazards such as harmful fumes, noncombustible dust, moisture, and gases.