Abstract: A method for executing and translating a computer program in a computer network, in particular for controlling a microscope, wherein in the case of at least one function call to the relevant second function, multiple return values from multiple preceding function calls are transferred as separate parameters. This allows significantly more complex and flexible function calls. More flexibility in the execution of container-based functions of a computer program in a computer network can additionally be achieved in that the computer program has not only function calls but also instructions for controlling the program flow, for example instructions for the conditional execution of program sections and jump instructions. The development of container-based computer programs can be simplified and speeded up by providing a database that contains the execution requirements of the function modules and also the interface definitions thereof. This permits a static typing of variables.

Abstract: Scanning fluorescence microscopes with an observation beam path from a measurement volume to an image plane. A beam combiner is provided for coupling an illumination system and a diaphragm arranged in the image plane for slow composition of the image because of the sequential scanning and subject the sample to loading as a result of inefficient use of the excitation light. The microscope simultaneously detects fluorescence from different focal planes in each case quasi-confocally. The observation beam path between the beam combiner and the image plane has a first diffractive optics for splitting light beams into beam bundles along different orders of diffraction, imparting to the light beams a spherical phase that is different from the other orders of diffraction. A second diffractive optics is provided for the compensation of chromatic aberrations of the split beam bundles, and a collecting optics is provided for focusing split beam bundles into the image plane.

Abstract: A method, an image processing apparatus, and computer program product for multilevel bilateral noise filtering of digital images are provided. The method includes receiving from an image sensor an image frame including a color mosaic having a color filter array (CFA) pattern, decomposing the image frame into at least one color plane image for each of a plurality of color planes, sequentially and separately reducing noise in the at least one color plane image by performing multilevel bilateral noise filtering of the at least one color plane image, and reconstructing the at least one color plane image to generate a noise filtered image frame.

Abstract: Methods, apparatuses and computer programs for image processing are provided. A sequence of images, in particular, is processed in this case. The images are subdivided into tiles and the tiles are transformed into the frequency domain. By evaluating the argument of the spectral density in the frequency domain, it is possible to identify and rectify disturbances which, for example, are caused by air disturbances (flickering).

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: A component for a mobile computer device, such as a smartphone, can be secured to the housing of the mobile computer device. The component can deflect the light of a built-in light source of the mobile computer device with an optical element and optionally filter the same, or can provide its own light source to improve the option of measuring eccentric photorefraction using the mobile computer device.

Abstract: Mobile computer devices and systems for refraction determination of an eye, for example for objective refraction determination and/or subjective refraction determination, are provided. Here, a display of the mobile computer device can be driven to display an image for refraction determination.

Abstract: A method, an image pre-processing apparatus, and a camera system for processing large images are provided. The method includes receiving from an image sensor an image frame at an image pre-processing apparatus, the image frame having a frame pixel resolution substantially equal to a sensor pixel resolution of the image sensor, dividing the image frame into first and second image subframes to be sequentially processed by an image signal processor, each of the first and the second image subframes having a subframe pixel resolution smaller than the sensor pixel resolution and a region in which the first and second image subframes overlap with each other. The subframe pixel resolution is predetermined by a processing capacity of the image signal processor, and the first and the second image subframes are consecutively processed by the image signal processor.

Abstract: A component for a mobile computer device, such as a smartphone, can be secured to the housing of the mobile computer device. The component can deflect the light of a built-in light source of the mobile computer device with an optical element and optionally filter the same, or can provide its own light source to improve the option of measuring eccentric photorefraction using the mobile computer device.

Abstract: A supplementary lens system for providing at least one supplementary lens in front of a camera module of an electronic device, the supplementary lens system including an object-side lens-element unit with positive refractive power and an image-side lens-element unit with positive refractive power. The object-side lens-element unit and the image-side lens-element unit are configured to generate an intermediate image between the object-side lens-element unit and the image-side lens-element unit. Furthermore, the invention relates to a supplementary lens for such a supplementary lens system.

Abstract: A light-scanning microscope including a scan optics for generating a pupil plane conjugate to the pupil plane of the microscope objective, and a variably adjustable beam deflection unit in the conjugate pupil plane. An intermediate image lies between the microscope objective and the scan optics. The scan optics image a second intermediate image (Zb2) into the first intermediate image via the beam deflection unit, wherein the second intermediate image is spatially curved. The deflection unit is not arranged in a collimated section of the beam path, but is instead arranged in a convergent section. Then, in terms of the optical properties and quality thereof, the scan optics needs rather to correspond merely to an eyepiece instead of a conventional scanner objective.

Abstract: An illumination optical unit serves for illuminating objects to be examined by a metrology system. The illumination optical unit has an optical pupil shaping assembly for generating a defined distribution of illumination angles of illumination light over an object field in which an object to be examined can be arranged. An optical field shaping assembly for generating a defined intensity distribution of the illumination light over the object field is disposed downstream of the pupil shaping assembly in the beam path of the illumination light. The field shaping assembly has at least one optical field shaping element arranged in the region of a pupil plane of the illumination optical unit. This results in an illumination optical unit which ensures an illumination which can be set in a defined manner with regard to an intensity distribution and an illumination angle distribution over the entire object field.

Abstract: A computer-implemented method for determining a representation of a rim of a spectacles frame or a representation of the edges of the spectacle lenses is disclosed, wherein at least two calibrated images taken from different viewing angles of a head a subject wearing the spectacles frame or the spectacles are provided, and wherein data for at least portions of the rims of the spectacles frame or the edges of the lenses are detected in each image. Further, a three-dimensional model of the spectacles frame or the spectacles is provided, based on geometric parameters, and the geometric parameters are optimised to adapt the model to the detected edges.

Abstract: A computer-implemented method for establishing the representation of the edge of a spectacle lens or of a left spectacle lens and a right spectacle lens for a spectacle wearer is disclosed. The method includes: providing image data relating to the spectacle wearer with a worn spectacle frame; calculating information data derived from the image data; calculating a deterministically optimizable cost function linking the information data with spectacle lens data, wherein the spectacle lens data describe the spatial extent of at least one spectacle lens held in the spectacle frame; and setting a curve of an edge of the spectacle lens or of the left spectacle lens and the right spectacle lens by optimizing the cost function.

Abstract: A light-scanning microscope including a scan optics for generating a pupil plane conjugate to the pupil plane of the microscope objective, and a variably adjustable beam deflection unit in the conjugate pupil plane. An intermediate image lies between the microscope objective and the scan optics. The scan optics image a second intermediate image (Zb2) into the first intermediate image via the beam deflection unit, wherein the second intermediate image is spatially curved. The deflection unit is not arranged in a collimated section of the beam path, but is instead arranged in a convergent section. Then, in terms of the optical properties and quality thereof, the scan optics needs rather to correspond merely to an eyepiece instead of a conventional scanner objective.

Abstract: A functionally integrated laser scanning microscope for scanning a sample with laser illumination, selectably in a confocal, line or wide-field operating mode, comprising a laser light source, an illumination and detection beam path, a detection device and at least one objective, wherein the illumination and detection beam path has optical means for the configuration of the laser illumination, at least one scanner for scanning the sample with the laser illumination, and a beam splitter for separating illumination and detection light, and controllable optical elements for changing the beam guiding depending on the operating mode selected in each case.