Abstract: A screen (3) for an HMD (1) is provided, and may be designed as a display screen or as a projection screen. The screen (3) comprises a layer (19) of a material with a switchable degree of transparency and at least one further switchable layer (17, 21, 23) which, in dependence on the switching state, can assume at least two physical states, the physical states differently influencing at least one optical property of light passing through the switchable layer or reflected by it.

Abstract: A method for operating a head-wearable presentation apparatus is provided. The method comprises the steps of: capturing data that are representative of at least one state variable of the head of a person wearing the head-wearable presentation apparatus, evaluating the captured data in order to determine the at least one state variable of the head, and modifying a degree of transparency of at least one playback arrangement of the head-wearable presentation apparatus if the at least one state variable of the head corresponds to a predetermined state variable.

Abstract: A method for operating a medical-optical display system for displaying an object image of an observed object is made available, said object image having been obtained by means of a medical-optical observation apparatus wherein the medical-optical display system comprises a data superimposition unit for superimposing data of at least one image data record into the object image. The method comprises the following steps: determining at least one region with little activity within the object image and superimposing the at least one image data record into the at least one region with little activity.

Abstract: A screen (3) for an HMD (1) is provided, and may be designed as a display screen or as a projection screen. The screen (3) comprises a layer (19) of a material with a switchable degree of transparency and at least one further switchable layer (17, 21, 23) which, in dependence on the switching state, can assume at least two physical states, the physical states differently influencing at least one optical property of light passing through the switchable layer or reflected by it.

Abstract: A screen (3) for an HMD (1) is provided, and may be designed as a display screen or as a projection screen. The screen (3) comprises a layer (19) of a material with a switchable degree of transparency and at least one further switchable layer (17, 21, 23) which, in dependence on the switching state, can assume at least two physical states, the physical states differently influencing at least one optical property of light passing through the switchable layer or reflected by it.

Abstract: A visualization system includes an image capturing apparatus configured to observe an object region having an object plane, an illumination apparatus that is mechanically decoupled from the image capturing apparatus, having an actuator for controlling at least one property of the illumination apparatus, a control unit connected to the actuator, and a pose capturing unit connected to the control unit. The pose capturing unit is embodied so that a relative pose between the illumination apparatus and the image capturing apparatus is ascertainable, wherein the actuator is actuable by the control unit, in dependence on the relative pose ascertained by the pose capturing unit, in a manner such that the at least one property of the illumination apparatus is settable such that the object region having the object plane is illuminated by the illumination apparatus.

Abstract: A screen (3) for an HMD (1) is provided, and may be designed as a display screen or as a projection screen. The screen (3) comprises a layer (19) of a material with a switchable degree of transparency and at least one further switchable layer (17, 21, 23) which, in dependence on the switching state, can assume at least two physical states, the physical states differently influencing at least one optical property of light passing through the switchable layer or reflected by it.

Abstract: A visualization system includes an image capturing apparatus configured to observe an object region having an object plane, an illumination apparatus that is mechanically decoupled from the image capturing apparatus, having an actuator for controlling at least one property of the illumination apparatus, a control unit connected to the actuator, and a pose capturing unit connected to the control unit. The pose capturing unit is embodied so that a relative pose between the illumination apparatus and the image capturing apparatus is ascertainable, wherein the actuator is actuable by the control unit, in dependence on the relative pose ascertained by the pose capturing unit, in a manner such that the at least one property of the illumination apparatus is settable such that the object region having the object plane is illuminated by the illumination apparatus.

Abstract: A method for operating a medical-optical display system for displaying an object image of an observed object is made available, said object image having been obtained by means of a medical-optical observation apparatus wherein the medical-optical display system comprises a data superimposition unit for superimposing data of at least one image data record into the object image. The method comprises the following steps: determining at least one region with little activity within the object image and superimposing the at least one image data record into the at least one region with little activity.

Abstract: A method for operating a head-wearable presentation apparatus is provided. The method comprises the steps of: capturing data that are representative of at least one state variable of the head of a person wearing the head-wearable presentation apparatus, evaluating the captured data in order to determine the at least one state variable of the head, and modifying a degree of transparency of at least one playback arrangement of the head-wearable presentation apparatus if the at least one state variable of the head corresponds to a predetermined state variable.

Abstract: An ophthalmologic system comprising and eye tracker and an OCT system. A method of operating the ophthalmologic system comprises: providing data representing a placement of a first B-scan performed on an eye relative to the eye; performing a measurement on the eye using the eye tracker; determining a placement of the eye relative to the ophthalmologic system based on the measurement using the eye tracker; placing the eye relative to a reference placement of the OCT system based on the provided data and the determined placement; performing A-scans on the eye at at least three A-scan positions; determining a placement of a second B-scan relative to the OCT system based on at least one of the at least three A-scans and the provided data such that the second B-scan and the first B-scan have a substantially same placement relative to the eye; and generating a representation of the second B-scan.

Abstract: An ophthalmologic system comprising and eye tracker and an OCT system. A method of operating the ophthalmologic system comprises: providing data representing a placement of a first B-scan performed on an eye relative to the eye; performing a measurement on the eye using the eye tracker; determining a placement of the eye relative to the ophthalmologic system based on the measurement using the eye tracker; placing the eye relative to a reference placement of the OCT system based on the provided data and the determined placement; performing A-scans on the eye at at least three A-scan positions; determining a placement of a second B-scan relative to the OCT system based on at least one of the at least three A-scans and the provided data such that the second B-scan and the first B-scan have a substantially same placement relative to the eye; and generating a representation of the second B-scan.