Patent ID: 8931902
Filing Date: 2015-01-13
Classification: A61B,G02B

Abstract:
1. An illumination device for a stereomicroscope for eye surgery, the illumination device comprising: an optical axis; at least one light source decentered by a non-zero amount (x) with respect to the optical axis a spherically concave mirror interacting with the light source to form an indirect image of the light source oppositely decentered from the light source by a non-zero amount with respect to the optical axis; a collector lens system; an aperture diaphragm; a condenser lens system; and an objective; wherein illumination light is directed from the light source through the collector lens system, the aperture diaphragm, the condenser lens system, and the objective into an object plane of the stereomicroscope, and wherein the aperture diaphragm is a double orifice plate having two orifices or a four-orifice plate having four orifices.