| 摘要 |
Apparatus for measuring an object ( 4 ) with at least one rectilinear edge or profile ( 4 a, 4 b) parallel to a given direction (y), comprising: a laser source ( 1 ) which emits radiation ( 2, 2 a) which impinges on the said edge or profile; a first cylindrical converging lens ( 5 ) the directrices of which are parallel to the direction (y), disposed downstream of the object ( 4 ); a spatial filter ( 6 ) disposed in the focal plane (A) of the first converging lens ( 5 ); a second converging lens ( 7 ) disposed downstream of the spatial filter ( 6 ); and photosensors ( 8 ) disposed in the focal plant (F) of the second converging lens ( 7 ).
|
