KEYENCE BL-N70 Series - Manual (Page 3)

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Safety Precautions
z Safety Precautions on Laser Apparatus
The "Hand-held Laser Barcode Reader BL-N70 Series" employs a visible red
semiconductor laser for its light source. This laser has a wavelength of 650 nm and is
classified as a Class 1 laser under IEC60825-1 (Safety of laser products). Do not
disassemble or modify the BL-N70 series.
CAUTION
Use of controls or adjustments or performance of procedures other than those
specified herein may result in hazardous radiation exposure. Exposure to laser
light may cause damage to eyes.
Item BL-N70 series
Wavelength 650 nm
Output 40 μW
Pulse width 1.5 ms
Class Class 1 (IEC 60825-1)
WARNING
• Do not look directly into laser light or reflected laser light from a mirrored
surface. Otherwise, eye injury may result. Laser light will not cause damage if
it strikes exposed skin, but laser light should not deliberately be aimed
towards a human body.
• Do not disassemble the BL-N70 series. The BL-N70 series does not
automatically stop emitting the laser when the reader is disassembled.
Therefore, if someone disassembles the reader, he/she may be exposed to
the laser beam and may suffer eye injury.
• Be sure to stop the laser emission before cleaning the portion of the laser
scanner where laser light is generated and received (emitter/receiver).
Otherwise, exposure to the laser may cause eye injury.
• Be careful of the path of the laser beam.
Be especially careful of reflected laser light from a mirrored surface.
Do not use the BL-N70 series where the path of the laser beam is at the
same height as that of the human eye.
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