Organic LED. Thin film component of organic semi-conductive materials functioning similar to a crystalline LED, however featuring significantly lower luminance and hence better suited as an extensive light source. Currently predominantly used in display technology.
O, P, Q
Typically an office with more than 25 workstations and a floor space exceeding 300 m2, in older buildings often featuring great room depth so daylight supply is only provided to a limited extent.
A partial surface is a surface with increased visual demands, e.g. reading, writing, measuring, controlling and observing production processes which is part of a work surface.
The most important quality criteria for lighting are:
balanced luminance levels in the entire field of vision
direction of light and degree of shadows
light colour and colour rendering index
variability of light in level and colour
avoidance of light flicker
sufficient daylight supply