Patent ID: 8054561
Filing Date: 2011-11-08
Classification: G02B

Abstract:
1. An optical system for merging a first and a second partial image beam into a resultant image beam in an optical instrument, wherein the first and second partial image beam both emanate from a specimen, said optical system comprising a stop arrangement provided with: at least one first movable stop element for the first partial image beam; at least one second movable stop element for the second partial image beam; wherein said first and second stop elements each comprise at least one stop region adapted to be brought into a working position with the first or second partial image beam by movement of the respective first or second stop element in order to modify the areal proportion of the respective first or second partial image beam in the resultant image beam; and a movably arranged connecting means for connecting the first and second stop elements such that the first and second stop elements can be moved jointly by moving the connecting means and can be moved in addition independently with respect to each other.