Derksen bil, Reference Manual

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Tips for an effective use
Surrounding light
An optimal result with the best contrast can be achieved in dark or dimmed surroundings. Daylight or
direct sunlight are many times lighter then artificial lighting and will therefore leave the projection
colour faded. Within rooms the result can be improved by avoiding to point spotlights or radiators on
to the projection area.
Material and colour of the projection area
The projection lamp BIL allows for projections on to a surface as well as through transparent surfaces.
The image quality greatly depends on the properties of the projection area. Therefore areas to be
projected on need to be non-transparent and should be light in colour. Best results will be gained on
matt white walls or flooring. Articles on display, parts of the decoration or furniture can be used as a
projection surface. However, mirrors, mirrored and or reflective metal surfaces are not suitable for this
purpose. Coloured surfaces will have an influence on the colours being projected.
In order to project through a surface (also called ‘rear projections’) all half-transparent materials, e. g.
calendered glass, frosted glass, transparent materials or paper can make suitable surfaces. For a rear
projection, the BIL is positioned behind the projection area (see Fig.
2 ). The projected motif is then
visible at both the front and rear side of the area.
Fig. 2: Rear projection – example
Opal glass
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