Odyssey Electronics Marine GPS System - Manual (Page 34)

7.3.4 CAUTION
US Federal law restricts this device to sale by or on the order of a licensed dentist.
7.3.5 CAUTION
Eyewear that protects your eyes from wavelengths other than 810 nm do not provide proper protection for use with
this laser. Damage to the retina or cornea may be irreparable if exposed to direct, reflected or scattered radiation.
Always wear protective eyewear when operating the laser.
7.3.6 CAUTION
Use of controls or adjustments, or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
7.3.7 CAUTION
The 810 nm wavelength of the working beam is not visible to the human eye.
7.3.8 CAUTION
Do not attempt to remove the cover from the laser chassis for the purpose of repairing the laser. Serious Injury from
an electrical shock or laser radiation could occur. Removing the cover on the laser chassis will void the warranty.
7.3.10 CAUTION
Avoid prolonged exposure of the energy when working in and around the cervical areas of the tooth. Due to the
thin layer of enamel in this area, the laser’s energy may be absorbed by the hemoglobin in the pulp and pulpal
hyperemia may occur. Extended exposure to laser energy could lead to pain and possible pulpal necrosis.
7.4 NOMINAL OCULAR HAZARD DISTANCE (NOHD)
The NOHD is the distance beyond which the exposure during normal operation is not to exceed the appropriate
Maximum Permissible Exposure (MPE). The NOHD for persons wearing safety glasses is shown in Table 1 below. The
Nominal Hazard Zone (NHZ) is the area where the laser source within which exposure levels exceeds the MPE (which
is the highest level of laser radiation to which a person may be exposed without hazardous effects or adverse
biological changes in the eyes or skin). The outer limit of the NHZ is the NOHD.
APPROPRIATE EYE PROTECTION MUST BE WORN BY ALL INDIVIDUALS WITHIN THE
NOMINAL HAZARD ZONE.
34 T h e L e a d e r i n D i o d e L a s e r s .
LABELS, SIGNS, WARNINGS AND MANUFACTURER’S INFORMATION
Section 7
Radiation Source
MPE
mW/cm 2 Divergence Angle
NOHD (inches/cm)
Without
Eye Protection
With
OD-4 Eye Protection
Fiber Optic (direct) 1.66 9° 155/393.7 1.55/3.94
Reflected from Tissue 1.66 n/a 0.25/0.63 0.0025/0.0063
Table 1 - Nominal Ocular Hazard Distance (NOHD)