Omron Z4LB V2 Instruction Manual page 20

Laser Safety
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
Class 1 Lasers which are safe under reasonably foreseeable conditions of opera-
tion.
Class 2 Lasers emitting visible radiation in the wavelength range from 400 nm to
700 nm. Eye protection is normally afforded by aversion responses in-
cluding 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 intra-
beam viewing of Class 3A lasers with optical aides (e.g., binoculars, tele-
scopes, microscopes) may be hazardous.
Class 3B Direct intrabeam viewing of these lasers is always hazardous. Viewing
diffuse reflections is normally safe (see note).
Class 4 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: mini-
mum 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.
xviii
Description
1