Illumination module for a reflection spectrometer

摘要

The illumination module (2) is for illuminating a plane measurement spot (3) of a reflection spectrometer (1). It comprises a plurality of light-emitting diodes (41.1-41.8). Light (21) is guided from the light-emitting diodes (41.1-41.8) to the measurement spot (3) by a circular conical mirror (6), such that the angle of incidence of the light (21) is essentially 45 DEG . First (5.1-5.8) and second (7) apertures delimit the angular range of light. The reflection spectrometer (1) comprises the illumination module (2) described above, a dispersive optical element (8) for analyzing light emerging from the measurement spot (3), and a detector array (9). <IMAGE>