Patent ID: 7035004

Claim:
A laser microdissection device, having a microscope stage, which carries a preparation to be cut, a direct-light instrument having an optical axis, a laser light source for producing a laser beam, and a microscope objective for focusing the laser beam onto the preparation, wherein a) the microscope stage is arranged static with respect to the x direction and the y direction during cutting, b) the direct-light instrument contains a laser scanning instrument, which consists two thick glass wedge plates which are inclined in relation to the optical axis and can be rotated independently of one another about the optical axis, and which produce a beam deflection owing to their wedge angle, the resulting deflection angle α of the laser beam in relation to the optical axis being variable by rotating the glass wedge plates, c) and only the glass wedge plates causing the laser beam to have a lateral beam offset in relation to the optical axis at the output of the laser scanning instrument, owing to the thickness and the oblique setting of the glass wedge plates, and only the glass wedge plates causing the laser beam to always strike the middle of an objective pupil of the objective for all deflection angles α.