Abstract: An arrangement for light sheet microscopy contains an illumination objective for illuminating a sample located on a slide in a medium with a light sheet, a detection objective, a separation layer system, a first adaptive optical detection correction element, and a further adaptive optical detection correction element and/or a first adaptive optical illumination correction element, and optionally, a further adaptive optical illumination correction element. The arrangement contains an adjustment device for the controlled movement of the first detection correction element and of the further detection correction element and/or of the first illumination correction element and of the further illumination correction element; and a control unit, to generate control commands and to actuate the adjustment devices by means of the control commands such that aberrations are reduced. Corresponding objectives and a corresponding method for reducing aberrations can be used.

Abstract: The invention relates to an optical system (7) having an optical axis (OA), having a display unit (5) for displaying an image, having an eyepiece (6) for viewing the image, the eyepiece (6) comprising a lens unit (L1). The display unit (5) is designed in such away that a marginal ray light beam (9) emanates from an edge (8) of the display unit (5) and propagates to the lens unit (L1) in a light incidence direction (L). The display unit (5) is arranged first along the optical axis (OA) in the light incidence direction (L), followed by the lens unit (L1) arranged on the optical axis (OA). No further optical unit of the optical system (7) is arranged between the lens unit (L1) and a pupil of the eye (2). The marginal ray light beam (9) has a chief ray (HS). The chief ray (HS) propagates at a first chief ray height (H1) at the lens unit (L1) and at a second chief ray height (H2) at the display unit (5). The first chief ray height (H1) is at least level with the second chief ray height (H2).

Abstract: The invention relates to an optical system (7) comprising a display unit (5) for displaying an image and comprising an eyepiece (6) for observing the image. The eyepiece (6) comprises a first lens group (LG1) and a second lens group (LG2). An intermediate pupil (ZP) is arranged between the first lens group (LG1) and the second lens group (LG2). The second lens group (LG2) is designed to image the image displayed by the display unit (5) into the intermediate pupil (ZP). The first lens group (LG1) is designed to image the image arranged in the intermediate pupil (ZP) into a spatial region (B). The intermediate pupil (ZP) and the spatial region (B) are conjugate to one another. A filter unit (E, FE) and/or a wavefront manipulator (E, WM) is/are arranged at the intermediate pupil (ZP).

Abstract: A projection system can include a first modulator including a plurality of pixels in a first modulator surface, a second modulator including a plurality of pixels in a second modulator surface, and an intermediate imaging optical unit, which images the first modulator surface onto the second modulator surface, wherein the intermediate imaging optical unit includes a first lens having a convex side and wherein the convex side of the first lens is a free-form surface, which is not spherical and not rotationally symmetric and does not exhibit any mirror symmetry.

Abstract: A projection system can include a first modulator including a plurality of pixels in a first modulator surface, a second modulator including a plurality of pixels in a second modulator surface, and an intermediate imaging optical unit, which images the first modulator surface onto the second modulator surface, wherein the intermediate imaging optical unit includes a first lens having a convex side and wherein the convex side of the first lens is a free-form surface, which is not spherical and not rotationally symmetric and does not exhibit any mirror symmetry.

Abstract: An arrangement for light sheet microscopy contains an illumination objective for illuminating a sample located on a slide in a medium with a light sheet, a detection objective, a separation layer system, a first adaptive optical detection correction element, and a further adaptive optical detection correction element and/or a first adaptive optical illumination correction element, and optionally, a further adaptive optical illumination correction element. The arrangement contains an adjustment device for the controlled movement of the first detection correction element and of the further detection correction element and/or of the first illumination correction element and of the further illumination correction element; and a control unit, to generate control commands and to actuate the adjustment devices by means of the control commands such that aberrations are reduced. Corresponding objectives and a corresponding method for reducing aberrations can be used.

Abstract: A camera lens, e.g., for a full-frame camera, may have a first compound lens leading on the object side, a second compound lens following the first compound lens, a third compound lens that terminates on the sensor side and follows the second compound lens, and an aperture stop arranged between the first compound lens and the second compound lens. The first compound lens may have a converging refractive power. The second compound lens may comprise at least two lens elements arranged movably along the optical axis, and the third compound lens may have at least one aspheric lens element which is fixedly arranged in the longitudinal direction of the optical axis, wherein the aspheric lens element has a diameter of at least 25 mm.

Abstract: An objective lens for a still or film camera includes a first and second lens-element arrangement, and a wavefront manipulator. The first and second lens-element arrangement are spaced mutually apart along an optical axis of the lens such that an interstice is present therebetween. The wavefront manipulator is in the interstice and includes two optical components displaceable counter to one another, perpendicular to the optical axis, and which each include a free-form surface. The wavefront manipulator has a zero position, wherein the optical components do not cause any image aberrations in the imaging properties of the objective lens, and effective positions, wherein the optical components are displaced counter to one another, out of the zero position perpendicular to the optical axis, and wherein the optical components cause a spherical aberration in the imaging properties of the objective lens.

Abstract: An arrangement for lightsheet microscopy. In the arrangement, a detection objective includes a first adaptive optical detection correction element arranged in the beam path or which can be introduced into the latter. Alternatively, or in addition, an illumination objective includes a first adaptive optical illumination correction element arranged in the beam path or which can be introduced into the latter. With the two correction elements, aberrations which occur because of the inclined passage through boundary surfaces of the separating layer system of light to be detected or of light for illuminating the sample can be reduced for a predetermined range of detection angles (?) or of illumination angles (?) and/or for a predetermined range of the thickness of the at least one layer of the separating layer system.

Abstract: An imaging system with an imaging lens system for imaging an object into an image plane is disclosed. The imaging lens system contains an optical component for a higher depth of field, of which the refractive power is alterable and the optical effect remains rotation-symmetrical.

Abstract: An arrangement for light sheet microscopy including illumination optics with an illumination objective for illuminating a sample, located in a medium on a sample carrier aligned with respect to a plane reference surface, with a light sheet. The arrangement further includes detection optics with a detection objective. The arrangement also includes a separating layer system with at least one layer separating the medium from the illumination and detection objectives. The separating layer system is aligned with a base surface parallel to the reference surface and contacts the medium by this base surface. At least one detection corrective lens, for reducing those aberrations occurring as a result of light to be detected passing obliquely through interfaces of the separating layer system, is configured as free-form lens and is arranged between the detection objective and the separating layer system. Alternatively, it also forms the front lens of the detection objective.

Abstract: A camera lens, e.g., for a full-frame camera, may have a first compound lens leading on the object side, a second compound lens following the first compound lens, a third compound lens that terminates on the sensor side and follows the second compound lens, and an aperture stop arranged between the first compound lens and the second compound lens. The first compound lens may have a converging refractive power. The second compound lens may comprise at least two lens elements arranged movably along the optical axis, and the third compound lens may have at least one aspheric lens element which is fixedly arranged in the longitudinal direction of the optical axis, wherein the aspheric lens element has a diameter of at least 25 mm.

Abstract: The invention relates to a lens (1), comprising a first lens unit (3), at least one second lens unit (5), and at least one pupil (7) having a pupil radius. The first lens unit (3) and the second lens unit (5) are arranged at a distance from each other along an optical axis (OA) of the objective, such that an intermediate space is present between the first lens unit (3) and the second lens unit (5). The second lens unit (5) is arranged on the image side with respect to the first lens unit (3). The first lens unit (3) is designed in such a way that the first lens unit produces a collimated beam.

Abstract: A lens for a still or film camera includes a first and second lens-element arrangement, and a wavefront manipulator. The first and second lens-element arrangement are arranged spaced mutually apart along an optical axis of the lens such that an interstice is present therebetween. The wavefront manipulator is situated in the interstice and includes at least two optical components which are arranged so as to be displaceable counter to one another, perpendicular to the optical axis, and which each include a free-form surface. The wavefront manipulator has a zero position, in which the optical components thereof do not cause any image aberrations in the imaging properties of the lens, and effective positions, in which the optical components are displaced counter to one another, out of the zero position perpendicular to the optical axis, and in which the optical components cause a spherical aberration in the imaging properties of the lens.

Abstract: An optical image offset device for compensating for or producing a lateral offset of an image of an observation object (41) in an optical observation device (33) is provided. The optical image offset device comprises at least two optical wedges (1, 3) which are arranged successively along an optical axis (OA) and which are respectively composed of at least two optical elements (5, 7, 9, 11). Each optical wedge (1, 3) has an adjustable wedge angle (?, ?) Furthermore the optical wedges (1, 3) have different refractive indices and different dispersions.

Abstract: An arrangement for lightsheet microscopy. In the arrangement, a detection objective includes a first adaptive optical detection correction element arranged in the beam path or which can be introduced into the latter. Alternatively, or in addition, an illumination objective includes a first adaptive optical illumination correction element arranged in the beam path or which can be introduced into the latter. With the two correction elements, aberrations which occur because of the inclined passage through boundary surfaces of the separating layer system of light to be detected or of light for illuminating the sample can be reduced for a predetermined range of detection angles (?) or of illumination angles (?) and/or for a predetermined range of the thickness of the at least one layer of the separating layer system.

Abstract: The invention is directed to an arrangement for light sheet microscopy. An arrangement of this type comprises illumination optics with an illumination objective (5) for illuminating a sample (3) with a light sheet via an illumination beam path, which sample (3) is located on a sample carrier in a medium (2), wherein the optical axis (6) of the illumination objective (5) and the light sheet lie in a plane which forms an illumination angle (?) not equal to zero with the normal lines of a plane reference surface (4) with respect to which the sample carrier is aligned. The arrangement further comprises detection optics with a detection objective (7) in a detection beam path, the optical axis (8) of the detection objective (7) forming a detection angle (?) not equal to zero with the normal lines of the reference surface (4).

Abstract: In general, in a first aspect, the invention features a system that includes a microlithography projection optical system. The microlithography projection optical system includes a plurality of elements arranged so that during operation the plurality of elements image radiation at a wavelength ? from an object plane to an image plane. At least one of the elements is a reflective element that has a rotationally-asymmetric surface positioned in a path of the radiation. The rotationally-asymmetric surface deviates from a rotationally-symmetric reference surface by a distance of about ? or more at one or more locations of the rotationally-asymmetric surface.

Abstract: A method and device are provided for time-sequential recording of three-dimensional images each of which has at least one first and one second partial image. The device has a sensor (13) with pixels (16) subdivided into two mutually different pixel groups. An imaging optical unit has a switchable changeover device (9) that images the partial images of the three-dimensional image time-sequentially onto the sensor (13). A control unit is connected to the sensor (13) and the changeover device (9) to control the reading of the sensor (13) and the switching states of the changeover device (9) so that the changeover device (9), during the imaging of the partial images onto the sensor (13) assumes at least one switching state in which excerpts of different partial images are fed to the different pixel groups of the sensor (13).

Abstract: The invention relates to a lens (1), comprising a first lens unit (3), at least one second lens unit (5), and at least one pupil (7) having a pupil radius. The first lens unit (3) and the second lens unit (5) are arranged at a distance from each other along an optical axis (OA) of the objective, such that an intermediate space is present between the first lens unit (3) and the second lens unit (5). The second lens unit (5) is arranged on the image side with respect to the first lens unit (3). The first lens unit (3) is designed in such a way that the first lens unit produces a collimated beam.