Omtech USB475a User Manual page 10

B B
C C
Laser Path
A. Laser Tube— This long glass tube is filled with helium,
nitrogen, and CO₂ gas and water cooled to safely produce
your engraving laser. Its connection to the laser power
supply is extremely high voltage and extremely dangerous.
B. 1st Mirror—This adjustable-angle mirror is fixed in
place to transfer the engraving laser from the tube to the
2nd mirror.
C. 2nd Mirror—This adjustable-angle mirror moves with the
X-axis rail to allow the laser beam to travel along the Y-axis.
D D
E E
F F
D. 3rd Mirror—This adjustable-angle mirror moves
with the laser head to allow the laser beam to travel
along the X-axis.
E. Focus Lens—This lens directs and focuses the laser
to the material.
F. Workbed—The bare workbed can be adjusted in
height or fitted with aluminium or honeycomb
tables for different projects.
Laser Head
A. X-Axis Rail—This rail moves along the Y axis, with its movement
controlled by limit switches.
B. 3rd Mirror—This adjustable-angle mirror transfers the laser from
the 2nd mirror to the focus lens.
C. Autofocus Sensor—This sensor is used by your engraver to focus
the laser correctly at the push of a button.
D. Focus Lens—This 18 mm lens directs and focuses the laser beam
to its point of contact with the engraving material.
E. Laser—The engraving laser itself is invisible but highly dangerous.
Avoid any direct exposure to your skin or eyes.
F. Air Assist—This device blows pressurised air to kill sparks and
blow away gas and debris as you engrave.
G. Red Dot Pointer—This device helps you see the exact position of
the invisible engraving laser.
H. Workbed—Use the provided acrylic tool to get the perfect focus
for any thickness of material.
6
A A