MEASURING FRAME WITH OPTICAL FILTER FOR CONTACTLESS OPTICAL SENSING OF A PENETRATING POSITION

摘要

Measuring frame for contactless optical detection of a leading position of a projectile (134) by a target surface (102), wherein the measurement frame (100) comprises: at least a first radiation source (120) for emitting a first divergent radiation field (116); at least one second radiation source (120) for emitting a second divergent radiation field (116), wherein the first and second radiation field cross in a plane transverse to a penetration direction at an angle; at least one first and at least a second optical receiver means associated with each of the at least a first and a second radiation source (120); wherein each of said optical receiver means comprises an array of optical receiver elements (136) which measure the respectively received intensity of radiation, so that a spatially extended Abschattungslage is determined as a result of the to-projectile (134), wherein the measurement frame (100) for extracting unwanted radiation at least a receiver aperture (118, 118 ', 118 "), and wherein the measurement frame (100) comprises at least one optical filter (206) which is transparent at least for a first predetermined wavelength range.