Patent ID: 8487987

Claim:
A camera adaptor ( 19 , 119 , 219 , 319 , 419 ) for connecting a camera ( 21 , 59 , 159 , 359 , 459 ) to an interface ( 13 ) of a medical-optical observation instrument ( 1 ) comprising a parallel beam path, in which the interface ( 13 ) is situated in the parallel beam path ( 9 a , 9 b ) of the medical-optical observation instrument ( 1 ) and in which the camera adaptor ( 19 , 119 , 219 , 319 , 419 ) has an instrument connector part ( 41 , 141 ) for the connection to the interface of the medical-optical observation instrument and a camera connector part ( 43 , 143 ) for the connection to a camera ( 21 , 59 , 159 ), the beam path ( 43 , 143 ) runs through the camera adaptor ( 19 , 119 , 219 , 319 , 419 ) along a linear optical axis, the camera adaptor ( 19 , 119 , 219 , 319 , 419 ) comprises an objective-lenses combination ( 47 , 147 , 247 , 347 , 447 ) with a total focal length in the region of between 40 mm and 120 mm, and the objective-lenses combination ( 47 , 147 , 247 , 347 , 447 ) has a lens combinations ( 49 , 149 , 349 ) of three lenses leading on the instrument side and which together have a positive partial focal length, the lens combination of three lenses ( 49 , 149 , 349 ) being followed, on a side toward the camera, by a single lens ( 57 , 157 , 357 ) with a negative partial focal length and the objective-lenses combination forms a tele-system ( 47 , 147 , 247 , 347 ).