Abstract: An ophthalmic surgical cartridge has a fluid pump with a pump chamber and a drive chamber which are separated by a fluid-tight and ion-tight partition element. A body fluid is suppliable to the pump chamber and a drive fluid is suppliable to the drive chamber. A deformation or change in position of a portion of the partition element is achievable with the drive fluid which increases the second volume in size and decreases the first volume in size to drain the body fluid from the pump chamber. The drive chamber has a front side wall with an edge zone in which only a single passage opening is provided, through which the drive fluid is suppliable into the drive chamber to fill the drive chamber with the drive fluid, and through which said drive fluid can be drained from the drive chamber to remove the drive fluid from the drive chamber.

Abstract: An adjusting device for an optical system has a first slider for a first optical element, which is arranged displaceably along an axial direction, a second slider for a second optical element, which is arranged displaceably along the axial direction, a control cam contour fixed in relation to the axial direction, a coupler between the first slider, the second slider and the cam contour, and a force element to exert force between the first slider and the second slider, so that the coupler is in contact with the first slider at a first point, is in contact with the second slider at a second point and is in contact with the control cam contour at a third point, the coupler including a first lever arm formed between the first and third points, and the coupler including a second lever arm formed between the second and third points.

Abstract: An adjusting device for an optical system has a first slider for a first optical element, which is arranged displaceably along an axial direction, a second slider for a second optical element, which is arranged displaceably along the axial direction, a control cam contour fixed in relation to the axial direction, a coupler between the first slider, the second slider and the cam contour, and a force element to exert force between the first slider and the second slider, so that the coupler is in contact with the first slider at a first point, is in contact with the second slider at a second point and is in contact with the control cam contour at a third point, the coupler including a first lever arm formed between the first and third points, and the coupler including a second lever arm formed between the second and third points.

Abstract: An operating microscope has a main objective (1) that extends along an objective plane and is penetrated by a binocular main observer beam path and a binocular co-observer beam path. The binocular main observer beam path has two main observation pupils (3a, 3b) in the objective plane with centers on a first straight line (7). The binocular co-observer beam path has two co-observation pupils (5a, 5b) in the objective plane with centers on a second straight line (9). The first and second straight lines (7, 9) intersect. The co-observer beam path can be displaced with respect to the main observer beam path so that the angle between the second and first straight line (9, 7) changes. The center point (6) between the co-observation pupils (5a, 5b) in the objective plane displaces when there is a change in the angle between the second and first imagined straight lines (9, 7).

Abstract: An operating microscope has a main objective (1) that extends along an objective plane and is penetrated by a binocular main observer beam path and a binocular co-observer beam path. The binocular main observer beam path has two main observation pupils (3a, 3b) in the objective plane with centers on a first straight line (7). The binocular co-observer beam path has two co-observation pupils (5a, 5b) in the objective plane with centers on a second straight line (9). The first and second straight lines (7, 9) intersect. The co-observer beam path can be displaced with respect to the main observer beam path so that the angle between the second and first straight line (9, 7) changes. The center point (6) between the co-observation pupils (5a, 5b) in the objective plane displaces when there is a change in the angle between the second and first imagined straight lines (9, 7).