MITA
RECOVER
VITA MED
SPADO
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COMBO
VELA
TASK
Health-promoting light
in the patient room
The lighting mood greatly influences patient recovery. In bright, open rooms with natural light
colours, the body can recover and regenerate better. Indirect light is particularly pleasant, as
it makes the room appear larger. Since people in patient rooms spend a lot of time in bed, the
lighting needs to be adapted to this position. The positioning and optical coverage of luminaires
prevents bedridden patients being dazzled by room light.
Small reading lights are mandatory for each hospital bed, which must reach at least 300 lux at
the reading position. The light emission direction prevents patients in neighbouring beds from
being disturbed. Orientation light and night lighting are particularly important since patients are
in an unfamiliar environment. They help patients navigate while also providing caregivers with
sufficient light for routine checks. For nursing procedures, illuminance should be at least 300
lux at the examination level.
To best support recovery, lighting should be synchronised with the patient's internal clock. This
requires sufficient illuminance to reach the patient's eye. Different light colours and illuminance
levels create a special, biologically effective light pattern, based on the dynamics of daylight
outdoors. As a result, the patients’ physiological performance curve follows its natural rhythm,
despite staying in the room all day. This improves awareness activity, enhances memory, and
stabilises the day/night rhythm. Especially after a period of artificial deep sleep or a coma,
patients can find their way back into their natural circadian rhythm more quickly and regenerate
both physically and psychologically. DIN/TS 67600 recommends a cylindrical illuminance of at
least 250 MEDI lux (see page 66) throughout the day at the head position of the 32-year-old
standard observer. Age-specific correction factors for 50-, 75-, and 90-year-olds can be found
in DIN/TS 5031-100.
Requirements
• Minimum illuminance of 100 lux (floor level)
• Indirect light enlarges the room visually and has a
relaxing effect
• Wall lighting should be adjustable
• Dynamic light curves for a natural sleep-wake rhythm
• For reading, an illuminance of 300 lux (e.g., thanks to an
adjustable reading light in the bed area)
• The unified glare rating must not exceed UGR ≤ 19
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