USER’S SAFETY PROTECTION MEASURES ACCORDING TO IEC60825-
1:1993+A1:1997+A2:2001 “LASER PRODUCT RADIATION SAFETY STANDARD”
I.
SAFETY GUIDE
I .
4 - 7
Page
10.8
Eye protection
Eye protection which is designed to provide adequate protection against specific laser wavelengths should be
used in all hazard areas where Class 3R laser products emitting energy outside of the 400 nm to 700 nm
wavelength range, Class 3B or Class 4 lasers are in use (see clause 12). Exceptions to this are
a) when engineering and administrative controls are such as to eliminate potential exposure in excess of
the applicable MPE;
b) when, due to the unusual operating requirements, the use of eye protection is not practicable. Such
operating procedures should only be undertaken with the approval of the laser safety officer.
c) maximum permissible exposure (MPE);
d) optical density of eyewear at laser output wavelength;
e) visible light transmission requirements;
f) radiant exposure or irradiance at which damage to eyewear occurs;
g) need for prescription glasses;
h) comfort and ventilation;
i) degradation or modification of absorbing media, even if temporary or transient;
j) strength of materials (resistance to shock);
k) peripheral vision requirements;
l) any relevant national regulations.
Eye protection which is designed to provide adequate protection against specific laser radiations should be
used in all hazard areas where Class 3B or Class 4 lasers are in use (see clause 12). This requirement does not
apply to Class 3B laser products with not more than five times the AEL of Class 2 in the wavelength range
from 400 nm to 700 nm. Additional exceptions to this are:
a) when engineering and administrative controls are such as to eliminate potential exposure in excess of the
applicable MPE;
b) when, due to the unusual operating requirements, the use of eye protection is not practicable. Such
operating procedures should only be undertaken with the approval of the laser safety officer.
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