TASK
LENO
VELA
MINO
MINIMAL
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TASK wall
Top colour fidelity and light quality in
the examination room
Light combines two essential aspects in the examination and treatment room. A warm, friendly
atmosphere helps patients feel calm and safe and relax during treatment. Physicians, mean-
while, need sufficient brightness and a high quality of light during treatment. According to
EN 12464-1, an examination illuminance of 1000 lux must be achieved. The right lighting in the
examination room, combined with homely and clearly designed furnishings, form the basis for
this.
Ceiling luminaires with a combination of direct and indirect light are suitable for general lighting.
Indirect lighting is pleasant and relaxing as it makes the room appear larger. Direct lighting
around the examination couch ensures optimal lighting conditions. However, care must be taken
not to dazzle a patient looking at the ceiling. The EN 12464-1 standard specifications with the
colour rendering value of Ra ≥ 90 apply. EN 12464-1 also indicates the possibility of requiring
individual colour rendering indices of higher quality for special requirements. In the examination
room, the two skin tones R13 and R15 should also be ≥ 90. The high colour fidelity enables phy-
sicians to differentiate the finest colour nuances on a patient's skin. XAL's new full-spectrum
LEDs offer an excellent colour rendering of Ra 97, with almost natural-frequency wavelengths.
As in daylight, there is a lot of light blue radiation which adapts the pupil size as it would in
nature. This protects the eyes during strenuous visual tasks.
The lighting in the examination room should not create glare or reflection points on computer
screens. The correct positioning of the luminaires is therefore crucial. If they are not mounted
centrally above the workstation but to the left and right of it, they ensure good visibility without
distracting reflections.
Requirements
• Direct and indirect ceiling luminaires provide a sense of
well-being
• Overall room illuminance of 500 lux
• Examination level ≥ 1000 lux with increased uniformity
of illuminance of U0 ≥ 0.7 and a colour rendering value of
Ra ≥ 90
• EN 12464-1 recommends the examination light's colour
temperature be between 4000 K and 5000 K
• The lighting should be adjustable
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