The topic that I am going to discuss are the sources of artificial light, that is, the main reflectors used and their respective lamps, later I will also write about the sources of natural light and their specific characteristics, now I will explain each reflector with its specifications and what source. In short, they use what their lamps are, so let’s go:
Open reflector
- It provides high intensity lighting and can receive lamps with powers such as 2000W for example.
- Its differential is to emit an open beam of light (and not contrasted.
- As in Fresnel).
- This beam can then be “shaped” and then through flags.
Reflector de Fresnel
The Fresnel lens was created in the 19th century by French physicist Augustin Jean Fresnel to increase the light output of marine lighthouses. Normal lenses would be too heavy for this type of use. The Fresnel reflector found that the deflection of the rays did not. They depend on the thickness of the lens but on its external shape.
Then he built a lens as if it were a normal lens. The advantage: the same goal was achieved with a much thinner and therefore lighter lens.
Fresnel lenses were then used on the headlights, increasing their brightness by concentrating their rays of light. Unlike a common lens, which must form an image accurately, the Fresnel lens only needs to focus light, and for this reason has a much lower cost.
For the same purpose, it is used today in reflectors for movies and videos.
Fluid reflector (cold light)
They use special fluorescent lamps. They produce a wider light than ordinary reflectors, without causing shadows. This type of lamp was created for use in the film Barfly, in 1987 and quickly began to be marketed by the company Kino-Flo, hence the name is sometimes referred to as the name of these panels.
LED panel (LED panels)
It uses a set of high-power LEDs and advantageously replaces incandescent light reflectors, due to lower energy consumption and less heating. Today a widely used system and several models already have color temperature correction, are dimmerized and are battery operated.
Several conventional reflectors that use lamps, Tungsten and Fluorescent, are already being adapted for the use of LEDs, as a light source, such as Fresnel, Sun Gun and Fluorescent.
Next!!!!
ABS!