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Oberkochen, Germany

The invention is directed to a system for determining the refractive properties of an eye. The system includes a wavefront measurement device for measuring the refractive properties of the eye. The system is configured to have at least one measurement mode assigned to children, wherein the system has an input device configured to switch the system into one of the at least one measurement mode assigned to children. The system is further configured to alter at least one of a group including a default pupillary distance, a default cornea vertex distance, a default position of the wavefront measurement device, a default position and/or direction of a measurement ray of the wavefront measurement device, a default position of a forehead and chin rest assembly of the system and a fixation target when the system is switched into the one of the at least one measurement mode assigned to children.


Patent
Carl Zeiss GmbH | Date: 2015-01-26

An optical system has a housing with a mount and an opening to a receiving region, the receiving region being located within the housing and including the mount. At least one optical element is inserted into and removed from the receiving region through the opening, and at least one gas supply device provides a flow of gas in the receiving region. An associated method of inserting or removing an optical element into or from a receiving region in a housing is also disclosed.


Patent
Carl Zeiss GmbH | Date: 2015-01-15

A method for improving imaging properties of an optical system and an optical system of this type having improved imaging properties are described. The optical system can have a plurality of optical elements. In some embodiments, an optical element is positioned and/or deformed by mechanical force action and by thermal action. In certain embodiments, one optical element is positioned and/or deformed by mechanical force action and another optical element is deformed by thermal action.


Patent
Carl Zeiss GmbH | Date: 2015-01-15

Systems and methods for expanding the field-of-view of ophthalmic scanning devices are presented. An ophthalmic scanning device is designed such that the pivot point of the scanning optics is maintained at a fixed location in the pupil while the scanning optics are rotated about the eye to obtain imaging data over an increased field-of-view than can be achieved by the scanning optics alone. The rotation can be achieved using a singular rotational motion of the scanning optics about a rotational axes coincident with the scanning pivot point or can be achieved using a combination of rotational motion with a second motion either rotational or translational to maintain the scanning pivot point at the fixed location. Embodiments related to optical coherence tomography and scanning laser ophthalmoscopy are described.


Patent
Carl Zeiss GmbH and TU Dresden | Date: 2015-04-14

The invention is directed to an apparatus for finding a functional tissue area in a tissue region. The apparatus has a measurement illuminating device suitable for emitting measurement illumination to the tissue region and a camera which can capture light reflected by the tissue region. The camera has a green channel and/or a blue channel wherein there is a change in an optical property of the light reflected by the tissue region during the stimulation thereof which is undertaken at least intermittently. An evaluation unit captures the change in the optical property only by a signal of the green channel and/or of the blue channel of the camera. A display unit can display an output signal of the evaluation unit for the functional tissue area in the tissue region.

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