Daylight and Blinds

Solar protection becomes an indispensable element to ensure the liveability in environments and a good quality of well-being within commercial and residential structures, which is why windows and glass facades must be suitably shielded with internal blinds, sunshades and Venetian blinds.

In fact, the study of the distribution of daylight or Daylight is not sufficient to guarantee the elimination of direct or indirect reflections - also typical of VDTs as far as offices are concerned - and not even the thermodynamic study is sufficient to evaluate the existence or absence of areas in which the effects of heat radiation are created due to insufficiently shielded solar energy.

Filter Curtains

The right solution of the blinds therefore acts as a shield, guaranteeing visual and luminous comfort with measures that take into account some characteristics of the environment in relation to the needs of light and the context of exposure and the filter blinds use fabrics available in different degrees of opening (defined Open Factor) allowing the maximization of natural light and the elimination of reflection.

Poor lighting creates visual discomfort but not shielding spaces properly can give rise to glare with stress and eyestrain, even more so if you take into consideration the fact that the variable nature of natural lighting affects the health of mind and body on our sleep-wake rhythms of life (circadian) and on the functioning of organs as well as on the state of mind.

How light enters and spreads in the rooms

Solar radiation has different angles depending on the time of day and the season as the angle varies depending on the latitude in which the building is located. 

Solar energy such as sunlight is partly reflected outwards when it meets the surface of the window glass and partly is transmitted directly inside the rooms.

The illuminance is expressed in lux and indicates the quantity of luminous flux intercepted by the receiving surface; the size is objective and independent of the position of the surface with respect to the observer. 

Luminance, on the other hand, is expressed in cd / m2 (nit) and corresponds to the quantity of light that reaches our eye per unit of surface, emitted or reflected by the surfaces and light sources around us; the size is subjective and dependent on the position of the observer.