| 摘要 |
A camera system ( 2 ) for strip-shaped exposure of a bank note (BN) having good optical properties as well as a compact construction has, symmetrically to an optical axis (OA), mirror assemblies ( 4 a , 4 b) of elliptical cross section each extending in the direction of the illuminated strip, light sources formed by LED arrays ( 6 a , 6 b), an imaging optic in the form of a SELFOC(R) lens assembly ( 8 ), and a photodetector array ( 12 ) onto which the illuminated strip of the bank note (BN) is imaged by the SELFOC(R) lens assembly ( 8 ) in a 1:1 ratio. |
