Optical lens for use in a media supply device and lens, media supply device and microscope

A microscope having an optical lens, said optical lens comprising:

• a first lens surface and a second lens surface, wherein the first lens surface is arranged to be facing an object to be observed and the second lens surface is arranged to be facing away from the object to be observed;
• with respect to a line that is oriented vertical with respect to the surface of the earth when the earth's gravitational force acts along an optical axis,
• at least one channel opening onto the first lens surface, wherein the at least one channel runs through said optical lens,
• one section of a media line formed in each of the at least one channel,
• the at least one channel or, if a plurality of channels are formed, at least one of the plurality of channels opens up outside a highest point in vertical alignment of the first lens surface,
• an immersion device;
• a controllable and displaceable stage for holding a sample carrier with a sample placed on a base of the sample carrier;
• an illumination objective and a detection objective, whereas respective objective axes of said illumination objective and said detection objective are orthogonal to one another and are directed to a common point of the sample;
• said illumination objective and said detection objective being both placed below the stage;
• said optical lens located in beam paths of said illumination objective and said detection objective as a common optical lens;
• wherein said common optical lens is formed as a meniscus lens assigned to the stage and sealed by a protective element in a form of a horizontally arranged membrane from an optics space, where said illumination objective and said detection objective are arranged and into which said optical lens arches;
• at least a first channel opening onto the first lens surface;
• wherein the at least first channel runs through said optical lens;
• and
• a section of a media line being formed in the first channel.