Patent ID: 7830597
Filing Date: 2010-11-09
Classification: G02B

Abstract:
1. An optical system for viewing an object, the optical system comprising: a plurality of lenses having a main optical axis coincident with centers of the lenses; a low magnification optical subsystem comprising at least one lens of the plurality of lenses and configured to view the object at a first magnification; a high magnification optical subsystem positioned on a same side of the object as the low magnification optical subsystem, and comprising the plurality of lenses and configured to view the object at a second magnification that is higher than the first magnification, the high magnification optical subsystem having a high magnification optical axis along which light rays received from the main optical axis are transmitted; and the high magnification optical subsystem comprising a movable element having a first side and a second side opposite and away from the first side, the movable element being configured to be positioned on the high magnification optical axis for receiving light rays on the first side and for transmitting the light rays out of the second side in a straight line in a direction parallel to the high magnification optical axis, and the entire movable element is configured to move along a plane in directions that are transverse to the high magnification optical axis.