| 摘要 |
<p>An illumination unit for positioning adjacent a record medium support surface of an analyse scanner on which a record medium to be scanned is positioned in use. The unit comprises a housing (1) with a slot (2) extending at least partially along its length. At least one radiation source (3,4) is supported within the housing (1), whereby a beam of radiation passes through the slot (2). A radiation absorbing surface (11,12) is provided offset from the radiation source (3,4) so as to form a background when viewing the slot (2) through the medium support surface in a direction offset to the beam direction. <IMAGE></p> |
