Appeal 2007-1710
Application 10/098,016
INVENTION
The invention is directed to a method of adjusting the beam path of a
light beam in an optical system. See page 3 of Appellants’ Specification.
Claims 1and 8 are representative of the invention and reproduced below:
1. Method for adjusting of at least one light beam in an optical
system defining a beam path, the method comprising the following
steps:
coupling-in a light beam of the optical system at a coupling-in
point into a device for adjusting the light beam and thereby generating
a coupled in light beam in the device, the device defining an optical
axis;
directing the coupled in light beam to at least two photo
detectors wherein each of the photo detectors is mounted on a housing
part of the device and disposed apart from the beam path at different
distances from the coupling-in point of the coupled in light beam;
determining the deviation of the coupled in light beam from a
nominal position by means of the electrical signals of at least two
photo detectors; and
adjusting at least one optical element of the optical system to
bring the coupled in light beam into the nominal position, therefore
adjusting the light beam to propagate along the beam path in the
optical system.
8. A mountable device for adjusting a light beam in an optical
system defining a beam path, comprising:
means for coupling-in the light beam into a housing part of the
device defining an optical axis of the device;
a coupling-in point and a coupled in light beam being defined
by the means for coupling-in;
2
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