Scientific background knowledge
has become an important issue in the domain of solar shading and
Light Control (Intensity and Glare).
If you want more information about the Light Tool, do not
hesitate to contact us. See Light
Tool Calculation for support on Light Tool Calculations.
When dealing with light, the challenges are treefold: providing
enough light, avoiding annoying reflection in computer displays
and taking care of glare. Glare is a matter of contrasts in luminance.
As for the quantity of light, generally in an office environment
300 to 500 lux are required and it's easy to measure this. But a
human eye rather reacts to the brightness of the surfaces and the
difference between the brightness and the working surface to the
surrounding surfaces.
This is called 'luminance' and is expressed
in cd/m² (candella per square metre). Whenever the contrast
values are too great, the eye has trouble adapting itself. There
should not be a greater difference between a computer screen and
the wall or window behind it than 3 to 1.
Achieving that often requires
a mobile shading system. To avoid direct reflections in a computer
video unit, direct sunlight must be avoided, but also diffuse light
can be annoying.
The position of the computer screen is important
of course, and it is best placed at straight angles with the windows.
But a Helioscreen Shading Fabric with low transmission and a high
absorption often does wonders to this problem.
Learn how solarshading controls the light quality.
example 1 - Mexico City - no shading
example 2 - Mexico City - with shading
example 3 - Mexico City - with shading
example 4 - Mexico City - with shading
REFERENCES
DAIDALOS, measurements and renderings of the Light Tool.
http://www.daidalos.be
AMBER IMAGING, visual interface & programming.
http://www.amber-imaging.be
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