Optical measurement detection and procedures for detecting the presence of small objects in a radiation path

摘要

The invention concerns an optical measuring device (1) to detect the presence of small objects (3) in a radius (5) for measuring light (7),with at least one radiation-side reception device (5) mounted (9),by which the measured light transmitted by a sample volume (19) in the radiation output (5) is focused in a straight to the radiation output (5) in the first direction (17) to an image width (25) and with at least one detection device (29) in the radiation output (5)measured light transmitted by the receiving side radiation-forming device (9) (7). The invention also concerns a procedure for optical recognition of the presence of an object (3) in a sample volume (19). To reduce sensitivity to disturbances of adjustment and dustIt is imaginatively provided that at least one detection device (29) is positioned at a working distance (37) to the receiver-side radiation forming device (9) which is smaller than the image width (25).