Patent ID: 11927735
Assignee: LEICA MICROSYSTEMS CMS GMBH
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method for reducing, in a microscope, a chromatic spread angle of light diffracted at an acousto-optic element which is disposed in a beam path of an incident light beam generating the diffracted light from the incident light beam such that the diffracted light emanates from a virtual interaction point of the acousto-optic element, the method comprising:
emitting light from a pulsed light emitting laser light source with a pulse duration of ≤1000 fs so as to provide the incident light beam;
focusing the incident light beam through a first focusing optical unit at a focus, wherein the focus is situated in the acousto-optic element;
generating the diffracted light from the incident light beam by the acousto-optic element, wherein the diffracted light emanates from the virtual interaction point of the acousto-optic element; and
passing the diffracted light through a second focusing optical unit, wherein the virtual interaction point is located in a front focus of the second focusing optical unit.