Beam Delivery In The Yag Laser Head - Zeiss VISULAS YAG III Mode D'emploi

Beam delivery in the YAG laser head

A Nd:YAG laser (1) (mini-laser module) generates the therapy beam.
The beam passes through the energy attenuator (5), is then combined
with the aiming beam (6) and coupled into the viewing path of the
corneal microscope by means of a coupling mirror (11).
The prism head of the slit illumination system (13) is lowered by 10°.
The lens system (2) can be used to adjust the focus shift.
Note for VISULAS YAG III:
In the central illumination position, a small part of the therapy
beam is clipped.
Note for VISULAS YAG III Combi:
The prism head of the slit illumination system must be lowered
by about 30° before the YAG laser can be fired and the YAG
laser beam can arrive at the patient's eye without
encountering any obstacles.
Nd:YAG laser
1
2 Focus shift lens system
Partially transmitting mirror for energy
3
meter
Energy meter and pulse counter
4
Energy attenuator
5
Four-point aiming beam diode laser
6
Aiming beam coupling mirror
7
Fig. 5 LSL YAG III beam delivery
000000-1354-664 VISULAS YAG III 15.08.2005
Description
Beam expander
8
9 Galilean magnification changer
Physician's safety filter
10
Coupling mirror for coupling the laser beam
11
into the viewing path
Slit lamp objective
12
Slit illumination system
13
19