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Recreation room
planning example
Specifi cations
A recreation room's lighting must meet many require-
ments. Since care home residents usually spend a lot of
time in the recreation room, we selected an HCL design
in this example. Human Centric Lighting meets both the
minimum requirements for the respective visual task and
also fulfi ls biological needs, in our case those of 75-year-
old residents. Furthermore, emotional lighting components
must also be available. To meet emotional needs, we have
chosen a dynamic lighting control system that off ers a
very high colour rendering of Ra / Re ≥ 90 across all colour
temperatures. On the walls, narrow-beam CWD spotlights
produce a cosy atmosphere at off -peak times.
Lighting standard EN 12646-1 minimum requirement
• Floor, wall, and ceiling with minimum illuminance of
300 lx, 75 lx and 50 lx
• As the recreation room is a communication room, cylin-
drical illuminance of Ez 150 lx is required
• Glare limitation UGR ≤ 22
MEDI lux – what biological illuminance is required vertically
at the resident's eye?
According to DIN/TS 67600, ≥ 250 MEDI lux (Melanopic
Equivalent Daylight Illuminance) must be delivered vertically
on the eye throughout the day. MEDI lux is the melanopic and
daylight equivalent assessed illuminance.
How does one convert to visual lux?
In our example, we assume 4000 K with an MDER of 0.68.
The 250 MEDI lux are divided by the MDER (Melanopic
Daylight Equivalent Ratio) to obtain the required visual
illuminance (250 / 0.68 = 368 lx). This 368 lx is the biologically
necessary vertical illuminance for a 32-year-old standard
observer.
DIN/TS 5031-100 has age-specifi c correction factors for
lens opacity and pupil constriction. Multiplied by this, the
factor for a 75-year-old observer is 0.319. For a 75-year-
old observer, 1153 lx of vertical illuminance is calculated
[368 lx / 0.319 = 1153 lx].
In this example, there is enough vertical illuminance for a
75-year-old observer.
Measured surfaces
1 Floor
2 Ceiling
3 Walls
4 User level
5 Visual fi eld
Recreation room dimensions
Floor area: 114.39 m2
Ceiling height: 3 m
Luminaire height: LINEA system 2.05 m / VELA 2.3 m
Refl ection
Floor 40 %, walls 80%, ceiling 90%
Maintenance factor: 0.8
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Healthcare facilities
