NOTES ON DEVICE SAFETY
LSM 710 and LSM 780
Carl Zeiss
Notes on Handling the Laser Components …
Systems
24 M60-1-0025
e
02/2010
When using a high power broadband illumination (HBO, X-Cite, HXP) in the incident light path
in combination with a neutral density reflector module in the microscope stand, there are
operating conditions which lead to strong reflections of excitation light into the eyepiece.
According to regulations for radiation load the maximal values are below the permissible
threshold and do not lead in all probability to any permanent irritation of the eyes also because
the natural averting reaction limits the exposure to the bright light. Nevertheless we
recommend not to look through the eyepiece when rotating the reflector turret. Especially, we
do not recommend the use of the reflector turret controls located on the microscope stand,
since this leads to an observation position close to the eyepiece. Instead, use the TFT-Touch
screen or the LSM software to switch the reflector turret. In case the reflector turret has to be
rotated by hand avoid looking into the eyepiece while doing so.
For NLO systems equipped with a specific push and click filter for NDD imaging be aware that
the NDD reflector cube in the reflector turret leads to a strong back reflection of HBO light into
the specimen plane and the eyepiece. When observing the specimen through the ocular lens
the use of the NDD reflector cube should be avoided. The light flash is not harmful but
unpleasant. The reflex of closing the eyelid is sufficiently protective.
