It is used instead of glass or PMMA, where good impact resistance and good flexibility
are required. It is sensitive to ultraviolet light, which is why it is often treated with paint
that can filter the rays.
Power
The power is defined as the work (W) performed in a unit of time (t). According to
the principle of equality between work and energy, power measures the amount of
energy exchanged in the unit of time, in any transformation process, whether this is
mechanical, electrical, thermal or chemical. Measured in watts (W).
Power supply
A power supply is an electrical device that changes the output electrical tension from
AC alternate to DC continuous. The electrical power can be adapted in this way so
that other electrical equipment can be used. Through a transformer, the level of
output tension and current, and therefore power, are modified.
LED power supplies are created especially for the piloting of LED load. There are two
main groups: the constant current power supplies regulate directly the current of
the LED load, while the constant tension power supplies create a continuous tension
through which other devices controlling LED loads can be operated.
Profile spot
Projector with optic elements able to ‘shape’ the projection, obtaining a net distinction
between light and dark in the projected light profile.
Primary optics
Elements that are first intercepted by light in an optical system.
Projector
Optic device able to transfer lighting energy from a source to a projection plan. The
transfer can be made replicating the image such as in cinema projectors (imaging
optic) or without replicating the image such as in the illuminators (non imaging optic)
R
Radiant energy
Energy emitted, transferred or received as radiation. Measured in joules, j = W.S
Radiation
Emission or transportation of energy in the form of electromagnetic waves or particles.
Radiometry
From latin RADIUS (ray) and greek METRIA (measurement). Branch of physics stud-
ying measurement of radiometric magnitudes related to electromagnetic energy, such
