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Certificate
The irradiance measurements are performed at 1 meter, which is considered the working distance of the light.
The radiance measurements are performed with a field of view of 11 mrad, which is considered representative
of the usual eye's exposure (several short time exposures).
The measurements are performed for an illuminance of 155,000 lux.
The measurements and calculation are performed according to EN 62471. Only the worst values of each set-
tings and cupolas are summarized below. Please note that the official Group limits may not be relevant for the
specific use of surgical lights.
Irradiance results
E
H
E
S
E
UVA
E
IR
For Blue light risk, the EN 62471 classification is Risk Group 1**.
For all other risks, the EN 62471 classification is Exempt Group*.
Case of Eye Surgery: Maximum time allowed for a patient's eye under the cupola (positioned at the center of
the light patch), depending upon Illuminance:
PowerLED II
*Exempt Group (RG 0): where no optical hazard is considered reasonably foreseeable, even for continuous, unrestricted use.
**Risk Group 1 (RG 1): products are safe for most use applications, except for very prolonged exposures where direct ocular exposures may be expected
EN 62471
PowerLED II 500
PowerLED II 700
Measurements conditions
Measurements results for Artificial Optical Radiations
550 W.m -2
9.97E -6 W.m -2
0.019
0.00
Illuminance Settings
Maximum (160,000 Lux)
Minimum (20,000 Lux)
Radiance results
11 mrad 4,200 W.m -2 .sr -1
L
B
11 mrad 67,500 W.m -2 .sr -1
L
R
Time without any risk
4 minutes
31 minutes
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