Abstract: In an embodiment a method for position determination of an object in a spatial area is provided in which the object is illuminated with at least one light beam. The light beam does not cover the complete spatial area and is guided into a part of the spatial area in which the object is present depending on the position of the object. In another aspect a method for measuring a surface is provided.

Abstract: In an embodiment a method for position determination of an object (25) in a spatial area (28) is provided in which the object (25) is illuminated with at least one light beam (22, 27). The light beam (22, 27) does not cover the complete spatial area (28) and is guided into a part of the spatial area in which the object (25) is present depending on the position of the object (25). In another aspect a method for measuring a surface is provided.

Abstract: A method for improving vision of a low-vision person and a viewing aid therefore are disclosed. An image is recorded by means of an image recording device, the image being intermediately stored within an image memory and modified and presented to the eyes of the person by means of an image display device being mounted on the head of the person. An image is recorded within a recording mode and the modified image is transferred to the image display device within a display mode. The display mode is initiated in an interval in time with regard to the image recording mode, the interval in time being manually adjustable.

Abstract: An HMD system including an image data module, which includes an enabling unit and a data unit, as well as a display module that can be mounted on the head of a user and is connected to the image data module via a bidirectional communication channel. The enabling unit transmits an enabling request to the display module via the communication channel, and the display module transmits an enabling code via the communication channel in response to the enabling request. The enabling unit verifies the validity of the enabling code, prevents transmission of image data from the data unit to the display module if an invalid enabling code is present and allows transmission of image data from the data unit to the display module if a valid enabling code is present. The display module presents an image based on the transmitted image data to the user wearing the display module on his head.

Abstract: A method for improving vision of a low-vision person and a viewing aid therefore are disclosed. An image is recorded by means of an image recording device, the image being intermediately stored within an image memory and modified and presented to the eyes of the person by means of an image display device being mounted on the head of the person. An image is recorded within a recording mode and the modified image is transferred to the image display device within a display mode. The display mode is initiated in an interval in time with regard to the image recording mode, the interval in time being manually adjustable.