Telecentric modular zoom system

A telecentric module zoom system for mapping an object plane on a sensor in a digital transmitted light microscope or incident light microscope having interchangeable lenses, comprising:

• a fixed tube lens unit (LG1) and a plurality of optical assemblies (LG2, LG3, LG4, LG5, LG6, LG7), at least two of which are adjustably arranged relative to one another for the purpose of changing the magnification,
• wherein a physical aperture (BL) conjugated relative to rear focal points of objectives used and having a variable diameter is arranged in the beam path,
• wherein the rear focal points of an objective are mapped in the space between a sensor image (BIE) and an intermediate image (ZB);
• and the intermediate image (ZB), the images of the rear focal points of the objectives and the sensor image (BIE) do not lie within or migrate through the plurality of optical assembles (LG2, LG3, LG4, LG5, LG6, LG7), and
• wherein the aperture (BL) is axially movable,
• wherein the plurality of optical assemblies comprises five optical assemblies (LG1, LG2, LG3, LG4, LG5), an intermediate image (ZB) and an aperture (BL), wherein, starting from the object side of the aperture plane (BLE),
• a tube lens unit as a first fixed assembly (LG1),
• a field lens as a second movable assembly (LG2),
• a movable intermediate image (ZB),
• a third movable assembly (LG3) having positive refractive power,
• a movable aperture (BL),
• a fourth movable assembly (LG4) having positive refractive power and
• a fifth fixed assembly (LG5) having negative refractive power are implemented.

A telecentric module zoom system for mapping an object plane on a sensor in a digital transmitted light microscope or incident light microscope having interchangeable lenses, comprising:

• a fixed tube lens unit (LG1) and a plurality of optical assemblies (LG2, LG3, LG4, LG5, LG6, LG7), at least two of which are adjustably arranged relative to one another for the purpose of changing the magnification,
• wherein a physical aperture (BL) conjugated relative to rear focal points of objectives used and having a variable diameter is arranged in the beam path,
• wherein the rear focal points of an objective are mapped in the space between a sensor image (BIE) and an intermediate image (ZB);
• and the intermediate image (ZB), the images of the rear focal points of the objectives and the sensor image (BIE) do not lie within or migrate through the plurality of optical assembles (LG2, LG3, LG4, LG5, LG6, LG7), and
• wherein the aperture (BL) is axially movable,
• wherein the plurality of optical assemblies comprises five optical assemblies (LG1, LG2, LG3, LG4, LG5), an intermediate image (ZB) and an aperture (BL), wherein, starting from the aperture plane (BLE) on the object side,
• a tube lens unit as a first fixed assembly (LG1),
• a field lens as a second fixed assembly (LG2),
• a fixed intermediate image (ZB),
• a third movable assembly (LG3) having positive refractive power,
• a movable aperture (BL),
• a fourth movable assembly (LG4) having positive refractive power, and
• a fifth movable assembly (LG5) having negative refractive power are implemented.