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18 . Frontier IR Dual-Range Systems User's Guide
Radiation Hazards and their Classification
Laser radiation
Indirect observation of the laser beam radiation in the optical path is not hazardous. Directly
viewing the laser beam along its axis (allowing the laser beam radiation to pass into the eye)
can be hazardous, depending upon the power of the beam, the length of time that the eye is
exposed to the beam and the optical efficiency of the exposed eye. Direct viewing of a laser
beam along its axis is termed
intrabeam viewing
.
Protection of the eye during accidental, momentary intrabeam viewing of a Class 2 laser
beam is normally given by the eye’s aversion response, including the blink reflex, which limits
exposure of the eye to less than 0.25 seconds.
Class 1 levels of laser radiation are not considered to be hazardous.
Radiation emitted by an NIR source
Your Frontier IR instrument can be fitted with an NIR source. The quartz halogen bulb, which
produces the near infrared beam, emits ultraviolet, visible and infrared radiation. The
majority of this radiation is in the infrared region. Do not stare into the beam produced by
this bulb.
Measurements of the infrared radiation emitted from the sample area show that exposure
limits recommended by the American Conference of Governmental Industrial Hygienists
(ACGIH) and International Commission on Non-Ionizing Radiation Protection (ICNIRP) will
not be exceeded during normal operation.