Lighting design is the process via which lighting is made an integral part of the building’s architecture. Good lighting design is integrated both into the architectural concept of the building and its structure. Continue reading
The lighting system/unit as a whole is called a Luminarie. Luminaries provide glare control, modified light distribution and electricity circuits to the lamp/light source embedded within it. They also provide support to the lamp. The luminarie directs light to where it is needed in terms of distribution and shields the light source from causing glares. Continue reading
Basic knowledge of electricity is necessary to understand how lighting systems work, in terms of power consumption, circuits, operating costs etc. Continue reading
What is Photometrics? No it is not about clicking photographs nor has it anything to do with your awesome photogenic face, neither it is the number of selfies you can click in a minute. It is a far more serious thing. It is the science of measuring light.
O’ course you cannot measure light with the help of a ruler, or a weight scale. It is a little more complicated than that. To begin with you need to understand five terms associated with measuring light. Intensity, Flux, Illuminance, Exitance and Luminance. Continue reading
Light sources that have built in optical systems are called Directional Sources or Reflector lamps. Ar, MR, PAR and R lamps are a few examples. Light sources which lack such in-built systems require external devices to modify the direction of light in order to make them useful for architectural applications.
Auxiliary equipments are of two types, Ballasts and Transformers. Both consume a little amount of power, adding to the total wattage of the Light Source. Continue reading
The light produced by passing electric current through vapour or gas is of a higher intensity than light produced by passing electricity through filaments. Electric Discharge Lamps are more efficient and have a longer life than filament based lamps (Incandescent lamps). Continue reading
Simply put, the Incandescent lamp is a hot metal wire (filament) inside a glass jar (the bulb).
‘Incandescent’ means emitting light as a result of being heated, which is how this type of lamp works. Electric current is passed through the wire, which heats up and emits light. The length and diameter of the wire determines the amount of electricity needed to heat the wire and thereby the output intensity of light. Continue reading
The principal characteristics of Daylight is that it changes with the time of day and year; even surrounding objects, pollution and position of the house will affect how daylight can be utilized as a part of design. Continue reading
Colour is not a physical property of the objects we see, but the light that is reflected back by the surface/object.
Colour results from light waves bouncing off an object; in the case of transparent or semi-transparent objects it would result from light waves passing through it. Therefore the material of the object/surface determines the colour. Continue reading
We all know what Brightness is. However, let’s get a bit technical: In the world of Lighting Design, specifying the direction and distribution of light in a space yields Brightness contrast. Simply put determining the intensity and spread of light over an area results in Brightness levels. Continue reading
Since sight is sensitive to contrasts, the brightness contrast of a space determines its emotional impact. In other words you need to play with contrasting light to create spaces that evoke an emotional response.
It is a truth universally acknowledged that when there is light we see things and in darkness we don’t. This simple observation leads us to wrongly believe that our eyes perceive the world around us through the amount of light present. Whereas in reality our eyes perceive the world around us by the quantity of contrast present in the light and not the quantity of light itself! Let us find out how. Continue reading