OPTICAL SHIELDING DEVICE FOR SEPARATING OPTICAL PATHS

摘要

The invention relates to a sensor unit (33) for detecting reference and measurement radiation (7, 5) for a distance measurement device. The sensor unit (33) has a sensor element (3) and an optical shielding device (1). The sensor element (3) has a first detection region (35) for detecting measurement radiation (5) and a second detection region (37) for detecting reference radiation (7). The optical shielding device (1) is positioned in relation to the sensor element (33) and fastened and optically separates the first and second detection regions (35, 37) from each other. The optical shielding device (1) further comprises a first recess (16) and a second recess (15) which are permeable to optical radiation of a first wavelength range.