Objects, Surfaces And Reflections; Position The Radiators - Bosch INTEGRUS User Manual

24 en | Planning
stage lighting are applied, you should directly point a radiator at the receivers in order to
ensure reliable transmission. For venues containing large, unscreened windows, you must plan
on using additional radiators. For events taking place in the open air a site test will be
required in order to determine the required amount of radiators. With sufficient radiators
installed, the receivers will work without errors, even in bright sunlight.
4.2.4

Objects, surfaces and reflections

The presence of objects in a conference venue can influence the distribution of infrared light.
The texture and color of the objects, walls and ceilings also plays an important role. Infrared
radiation is reflected from almost all surfaces. As is the case with visible light, smooth, bright
or shiny surfaces reflect well. Dark or rough surfaces absorb large proportions of the infrared
signal (see the next figure). With few exceptions it cannot pass through materials that are
opaque to visible light.
Figure 4.8: The texture of the material determines how much light is reflected and how much is absorbed
Problems caused by shadows from walls or furniture can be solved by ensuring that there are
sufficient radiators and that they are well positioned, so that a strong enough infrared field is
produced over the whole conference area. Care should be taken not to direct radiators
towards uncovered windows, as most of this radiation will subsequently be lost.
4.2.5

Position the radiators

Since infrared radiation can reach a receiver directly and/or via diffused reflections, it is
important to take this into account when considering the positioning of the radiators. Though
it is best if receivers pick up direct path infrared radiation, reflections improve the signal
reception and should therefore not be minimized. Radiators should be positioned high enough
not to be blocked by people in the hall (see the next two figures).
Figure 4.9: Infrared signal blocked by a person in front of the participant
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