Patent ID: 9377612
Filing Date: 2016-06-28
CPC Classification: G02B

Claim Text:
1. An infrared (=IR) microscope, the microscope comprising; elements defining a beam path for visible light; elements defining a beam path for IR light; a first intermediate focus; a Cassegrain objective having a sample position, said Cassegrain objective imaging the sample position onto said first intermediate focus, wherein said beam paths for visible and for IR light are coextensive in a region of the sample position; an IR detector, wherein the IR microscope is constituted such that, at least in an IR viewing mode, IR light is directed from said first intermediate focus to said IR detector; a second intermediate focus, wherein the IR microscope is constituted such that, in the beam path for visible light, said first intermediate focus is imaged onto said second intermediate focus; a Mangin mirror disposed at said second intermediate focus, said Mangin mirror being structured to correct a field curvature of said Cassegrain objective; and a flat viewing surface disposed downstream of said Mangin mirror, wherein, at least in an optical viewing mode and in the beam path for visible light, said first intermediate focus is imaged onto said flat viewing surface, wherein a curvature radius R