Abstract: The invention relates to a method for layered production of a three-dimensional object, wherein a powdery or fluid building material, which can be solidified by the effects of electro-magnetic or particle radiation, is applied in layers having a layer thickness d, and the locations in each layer which correspond to a cross-section of the object allocated to said layer are solidified by means of electromagnetic or particle radiation. According to the invention, each cross-section consists of a contour region and an inner region and the method comprises the following sub-step: in a sequence of N successive cross-sections, wherein N is a whole number greater than 1, a partial region is defined in every cross-section as a critical region and the rest of the cross-section is defined as a non-critical region, a number of N layers are applied successively, without solidification of the non-critical regions.

Abstract: A laser-assisted method for fully or partially separating tissue such as collagen containing tissue is provided. In one embodiment, the method pertains to a capsulorhexis whereby the laser-assisted method is applied to the lens capsule. A light-absorbing agent is added into or onto the tissue. A light beam with a wavelength capable of being absorbed by the light absorbing agent is then directed at the tissue to cause a thermal effect at the tissue following a predetermined closed curve with the goal to avoid irregularity or potential tears in the resulting rim of the tissue.

Abstract: A calibration device (30) for an apparatus (1) for layerwise production of a three-dimensional object (2) by layerwise solidification of building material (10) at the locations corresponding to the cross section of the object to be produced in the respective layer by means of at least two energy beams (14a, 14b) includes a housing (31) and a sensor (32) which is arranged in the housing. The sensor serves to receive the at least two energy beams and to output an output signal as a function of the intensity of the energy beams. The housing has at least two through-openings (34a, 34b) for transmitting the at least two energy beams, which are arranged so that their central axes intersect on a surface of the sensor.

Abstract: A device and a method for manufacturing a three-dimensional object (3) by solidifying layers (25) of a material in powder form at those positions corresponding to the respective cross-section of the object (3) are provided. The device comprises an application device (40) for applying layers of the material in powder form (47) in the building area (5), which can be moved over the building area (5). The application device (40) is formed to have a first longitudinal wall (41a) and a second longitudinal wall (41b) that are connected to one another via two side walls. The application device (40) is provided with a fluidization device for homogenizing the material in powder form (47). This fluidization device comprises at least one hollow body having escape openings in its walls, through which escape opening a gas can flow from the hollow body into the material in powder form (47).

Abstract: A method for automatically calibrating a device for generatively producing a three-dimensional object (8) comprises the following steps: irradiating an applied layer of a material (3) or a target by means of a first scanner (14) in order to produce a first test pattern (33) in the material (3) or the target; irradiating the applied layer of the material (3) or the target by means of a second scanner (15) in order to produce a second test pattern (34) in the material (3) or the target; detecting the first and second test patterns (33, 34) by means of a camera (24) and assigning the first and second test patterns (33, 34) to the first and second scanners (14, 15), respectively; comparing the first and/or the second test pattern (33, 34) with a reference pattern and/or comparing the first and second test patterns (33, 34) with one another; determining a first deviation of the first test pattern (33) from the reference pattern and/or a second deviation of the second test pattern (34) from the reference pattern an

Abstract: The invention relates to a spin coater for a device for the generative production of an object, having a support (1) which can be connected to the device in a rotable manner about a rotational axis (z); and a coating element (2) which is coupled to the support (1) and which is suitable for applying or leveling a powder layer on a plane in the device while the support (1) is rotating, said plane running perpendicularly to the rotational axis (z); wherein the coating element (2) substantially maintains its orientation during the rotational movement of the support (1) within a specified rotational range; and the coating element (2) substantially does not move in a longitudinal direction of the coating element (2) during the rotational movement of the support (1) within a specified rotational range.

Abstract: An imaging apparatus has an emission device to emit X-rays and a detection device to detect X-rays. A detector collimator is located between the patient space and the detection device. The emission device and detection device operate while translating along a displacement axis, to take a plurality of acquisitions. The imaging apparatus has a setting device to modify a dimension of a collimator slit.

Abstract: A method for producing a dental model by means of a generative layering technique comprises the following steps: altering a three-dimensional CAD model of the dental model, wherein gap-like recesses are generated, such that the CAD model is cut into segments by the gap-like recesses, and connecting bridges are placed in the CAD model in such a way that the connecting bridges connect adjacent segments to each other, producing the dental model by means of a generative layering technique on the basis of the altered three-dimensional CAD model.

Abstract: Treatments to improve ocular conditions such as presbyopia are provided. Structural (mechanical) weakening of the sclera is accomplished through the formation of a 3-D pattern of laser foci in the sclera resulting in an increase in the range of ocular accommodation.

Abstract: A laser-assisted method for fully or partially separating tissue such as collagen-containing tissue is provided. In one embodiment, the method pertains to a capsolurorhexis whereby the laser-assisted method is applied to the lens capsule. A light-absorbing agent is added into or onto the tissue. A light beam with a wavelength capable of being absorbed by the light absorbing agent is then directed at the tissue to cause a thermal effect at the tissue following a predetermined closed curve with the goal to avoid irregularity or potential tears in the resulting rim of the tissue.

Abstract: Method for correcting an acquired medical image of a patient showing a representation of an internal body structure, the acquired image having been acquired in a medical imager having a radiation source and a radiation detector spaced from one another along an image-taking direction, and between which the patient is disposed. One obtains, from the acquired image, a corrected image taking into account a position of the internal body structure along the image-taking direction.

Abstract: After the manufacturing of an object by layer-wise solidification from a powder, this object is displaced into a container together with the powder surrounding the object, and is closed by a plate, which is positioned below the object during the manufacturing of the object.

Abstract: A screen modifier which is light-weight and low cost can be made with a system of apertures and Fresnel lenses to create full depth viewing in almost any existing TV or viewing device. It can be made detachable and adjustable. The effect is wholly natural with no glasses needed. Especially with the newer 4K screens the resulting images are in high definition, or HD. The orderly setup of the screen modifier allows a TV screen to be written to from a remote capture device with data streaming across the Internet in real time. The technology can be applied to TVs, tablets, monitors and cell-phones. It may be useful for remote surgery.

Abstract: A method for locating the center of a beam profile, comprises the steps of: providing a beam profile; selecting one or more strips through the beam profile; identifying distinct regions of intensity along the one or more strips and labelling them consistently; calculating a combined average intensity for each labelled region, using data from the one or more strips; plotting the average intensity against the labelled regions and comparing the results with a plot of the actual intensity obtained by taking a cross-section through the center of at least one of the one or more strips; and optimizing the location of the center of at least one of the one or more strips so as to obtain the best fit between the average intensity plot and the actual intensity plot to thereby identify the center of the beam profile.

Abstract: A method for manufacturing a three-dimensional object layer by layer by applying and selectively solidifying a constituent material in powder form layer by layer by supply of energy has the steps: applying a layer (32+33) of the powdery constituent material (11) having a pre-determined height (h) onto a support (6) or a previously at least selectively solidified layer of the constituent material, and supplying energy (14) from an energy source (13) into the applied layer at positions corresponding to the cross sectional area of the object to be manufactured for selectively solidifying the constituent material. The step of applying the layer having the pre-determined height (h) is subdivided into a step of applying a first partial powder layer (32) having a first height (h1) which is smaller than the pre-determined height (h), and a step of at least applying a second partial powder layer (33) having a second height (h1) which is smaller than the pre-determined height (h), wherein the total height (h1+h2+ etc.