Abstract: The invention relates to a method of monitoring an elevator roping, the roping comprising plurality of movable ropes, the method comprising emitting light in particular with one or more light sources on the ropes while they move past the one or more light sources; and capturing with a camera system images continuously or intermittently of a zone towards which the one or more light sources emit light; and analyzing with an analyzing system the images captured by the camera system. Said emitting comprises emitting on a flank of each of said ropes at least one light beam having a shape, and said analyzing comprises recognizing in the images patterns of light emitted on said ropes and analyzing one or more characteristics of the recognized patterns. The invention also relates to a monitoring arrangement implementing the method.

Abstract: The present invention relates to a method for adjusting a photodetector array, and a beam-splitting and detector structure for a line scan camera, which structure comprises a photodetector array which is protected by a casing (10) from at least the back, and adjusted to the focus plan of an objective and glued to the exit surface focus plane of an objective and glued to the exit surface of the beamsplitting prism (2) by means of a support and adjusting structure. According to the invention, the supporting and adjusting structure comprising a glue layer (6) arranged between edges (19) surrounding the photodetector array (1) in the casing (10) and the exit surface (4) of the beam-splitting prism.