Control measures
Protective Equipment (4.4.6)
Classification
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•
X
X
X
Spectator (4.4.7)
•
Service Personnel (4.4.8)
✩
✩
✩
✩
X
MPE
MPE
MPE
MPE
Demonstration with General Public (4.5.1)
Laser Optical Fiber Systems (4.5.2)
Laser Robotic Installations (4.5.3)
MPE ✝
MPE
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X
X
X
X
X
X
MPE
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MPE
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MPE
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X
NHZ
X
NHZ
Eye Protection (4.6.2)
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•
X
MPE
MPE
Protective Windows (4.6.3)
X
X
NHZ
NHZ
Protective Barriers and Curtains (4.6.4)
Skin Protection (4.6.5)
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•
•
X
MPE
X
MPE
Other Protective Equipment (4.6.5)
Use may be required
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Warning Signs and Labels (4.7) (Design Requirements) ---
•
•
X
NHZ
X
NHZ
Service and Repairs (4.8)
LSO Determination
LSO Determination
Modification of Laser Systems (4.9)
Note 1. LEGEND
X:
•:
---:
✩:
Shall
Should
No requirement
Shall if enclosed Class 3b or Class 4
MPE: Shall if MPE is exceeded
NHZ: Nominal Hazard Zone analysis required
✝:
Applicable only to UV and IR Lasers (4.5.1.2)
2. LSO: Laser Safety Officer
An individual shall be designated the Laser Safety Officer with the authority and responsibility to monitor and enforce the control of laser
hazards, and to effect the knowledgeable evaluation and control of laser hazards.
For your reference, see ANSI Z136.1-1993, Section 1.3.
Laser Product Classifications
● EN
Class
Description
Class 1
Class 2
Lasers which are safe under reasonably foreseeable conditions of operation.
Lasers emitting visible radiation in the wavelength range from 400 nm to 700 nm. Eye protection is normally afforded by
aversion responses including the blink reflex.
Class 3A
Lasers which are safe for viewing with the unaided eye. For laser emitting in the wavelength range from 400 nm to 700 nm,
protection is afforded by aversion responses including the blink reflex. For other wavelengths the hazard to the unaided
eye is no greater than for Class 1. Direct intrabeam viewing of Class 3A lasers with optical aides (e.g., binoculars, tele-
scopes, microscopes) may be hazardous.
Class 3B
Class 4
Direct intrabeam viewing of these lasers is always hazardous. Viewing diffuse reflections is normally safe (see note).
Lasers which are also capable of producing hazardous diffuse reflections. They may cause skin injuries and could also
constitute a fire hazard. Their use requires extreme caution.
Note: Conditions for safe viewing of diffuse reflections for Class 3B visible lasers are: minimum viewing distance of 13 cm between screen and
cornea and a maximum viewing time of 10 s. Other viewing conditions require a comparison of the diffuse reflection exposure with the MPE.
ZX Series (ZX-L-N) Smart Sensors (Laser Type)
21
OMRON [ OMRON ELECTRONICS LLC ]
