Patent ID: 11933956
Assignee: CARL ZEISS MICROSCOPY GMBH
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An illumination apparatus for illuminating a sample plane and a sample that is arranged therein along an illumination beam path, the apparatus comprising:
a first light source configured for outputting light of at least one first wavelength (λ.sub.photo);
a second light source configured for outputting light of at least one second wavelength (λ.sub.exc); and
a diffraction grating disposed in the illumination beam path between the first and second light sources and the sample plane,
wherein light of the first wavelength (λ.sub.photo) is not diffracted by the diffraction grating and light of the second wavelength (λ.sub.exc) is diffracted due to the diffraction grating.