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 beam-splitting 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.