Carl Zeiss AG

An optical system with an optical axis includes a display for displaying an image, an eyepiece for viewing the image, the eyepiece including a lens. The display is configured such that a marginal ray light beam emanates from an edge of the display and propagates to the lens in a light incidence direction. The display is arranged first along the optical axis in the light incidence direction, followed by the lens arranged on the optical axis. No further optical unit of the optical system is arranged between the lens and a pupil of the eye. The marginal ray light beam has a chief ray. The chief ray propagates at a first chief ray height at the lens and at a second chief ray height at the display. The first chief ray height is at least level with the second chief ray height.

A method for setting a sighting device with a telescopic sight and an attachment device is provided. The attachment device includes a display, a control element, and a non-transitory computer-readable storage medium, and is connected to the telescopic sight such that the display can be observed through the telescopic sight. The method includes displaying a center marking at a center position on the display and activating a first interaction mode, in which the center position of the center marking can be shifted into a new center position by operating at least one control element, displaying a circular marking and activating the second interaction mode, in which the size of the circular marking is changeable by operating at least one control element, and storing display information regarding the new center position and the size of the circular marking in the non-transitory computer-readable storage device.

The invention relates to a computer implemented method for training a machine learning model for semantic image segmentation, the method comprising: obtaining training images collectively containing at least three different types of annotations, and training the machine learning model using a loss function, wherein the formulation of the loss function at at least one pixel depends on the types of annotations at the pixel and on the types of annotations within each batch. The invention also relates to a computer implemented method for semantic segmentation making use of the trained machine learning model, and to corresponding systems, computer programs and computer readable media.

In order to recognize a shape deviation of an inspection object from a three-dimensional target geometry in three dimensions, three-dimensional, back-projections onto the three-dimensional target geometry are determined by at least one processing circuit, wherein a back-projection onto at least a part of the three-dimensional target geometry is determined for each of several two-dimensional images of the inspection object. The back-projections determined for the several two-dimensional images are compared by the at least one processing circuit in order to recognize the shape deviation.

A method of setting up non-randomly positioned markers in a field of view of a camera bar, and tracking a pose of the camera bar, including: (i) a camera bar of a video camera viewing a field of view; (ii) displaying the camera bar's view on a display; (iii) the computer system: generating a pattern of non-random marker positions, and displaying them with the camera bar's view; (iv) detecting that a marker has been placed in a position of a non-random marker position; (v) recording a marker and a respective position of the marker; (vi) repeating steps (iv) and (v) until a predetermined number of different markers and respective marker positions have been recorded; (vii) matching markers detected with the recorded markers and their respective marker positions, to obtain a pose of the camera bar; (viii) repeating step (vii), to track the pose of the camera bar.

An optical system includes a display configured to display an image and including an eyepiece for observing the image. The eyepiece includes a first lens group and a second lens group. An intermediate pupil is arranged between the first lens group and the second lens group. The second lens group is configured to image the image displayed by the display into the intermediate pupil. The first lens group is configured to image the image arranged in the intermediate pupil into a spatial region. The intermediate pupil and the spatial region are conjugate to one another. A filter unit and/or a wavefront manipulator is/are arranged at the intermediate pupil.

A camera of a mobile device includes at least two entrance openings and at least two image sensors. A first entrance opening is assigned to a first image sensor via a first imaging path and a second entrance opening is assigned to a second image sensor via a second imaging path. Each of the entrance openings has a light entrance surface with a longitudinal direction and a transverse direction running perpendicular thereto. The length of the entrance opening in the longitudinal direction is at least 1.2 times larger than the width of the entrance opening in the transverse direction. The first imaging path and the second imaging path each include anamorphic optics. In addition, a mobile device including the camera, and a method for generating an image representation with the camera are provided.

A method is provided for operating an electro-optic observation device, in particular a thermal imaging device, which includes an electronic viewfinder, a proximity sensor and a position sensor. According to the method, a predefined distance range in front of the viewfinder is monitored for a presence of a user with the proximity sensor, a position variable which is characteristic of the orientation of the observation device is captured with the position sensor, information concerning a current use situation of the observation device is derived from the presence of the user within the distance range and/or the position variable, and at least one specific function of the observation device that influences an image display is activated or at least enabled depending on the information concerning the current use situation.

An optical waveguide is provided for arrangement in the beam path of an optical arrangement with a device for output coupling and/or input coupling an imaging beam path. The optical waveguide includes a GRIN element having at least one curved surface. The GRIN element has a refractive index distribution designed to reduce the aberrations, arising due to the curvature of the GRIN element, in an imaging path of a virtual image created by light waves guided in the optical waveguide by total-internal reflection.

A sample vessel is for cultivating biological samples and includes a cavity for accommodating a medium; at least one access opening for delivering the medium into the cavity; and a sample space, disposed within the cavity, for accommodating a sample. The sample space being separated from a remaining space of the cavity by at least one lateral wall having apertures via which the medium in the cavity can communicate with the sample space. The at least one lateral wall stands on a bottom of the sample space; and the bottom is transmissive for wavelengths of at least one wavelength range of visible light, such that illumination of the sample space and/or detection of detection radiation coming out of the sample space through the bottom of the cavity is made possible. An apparatus is for operating the sample vessel and to a microscope.