Abstract: An augmented reality, virtual reality, or other wearable apparatus comprises an eye tracking device comprising an image sensor, a lens, and one or more processors. In some embodiments, the lens comprises a marker, and the one or more processors are configured to receive an image from the image sensor, wherein the image shows the marker, determine a distance from the image sensor to the marker based on the image, and change a calibration parameter of an eye tracking algorithm based on the distance. In some embodiments, the one or more processors are configured to receive image data from the image sensor, wherein the image data corresponds to an image as observed through the lens, determine a level or pattern of pincushion distortion in the image based on the image data, and change a calibration parameter of an eye tracking algorithm based on the level or the pattern of pincushion distortion.

Abstract: The invention relates to a locking device at a spagnolet mechanism (1), anchored in a door or window case (39), which mechanism comprises a central adjusting mechanism (2), from which locking rods (7) originate in mutually opposite directions, the free ends of the locking rods (7) being anchored in recesses (41) in a frame (40), a locking bolt (42) being responsible for the locking, which is pivotable around a stationary revolving spindle pin (44) by the locking rods, which locking bolt (42) via a connection link (43) with joints adjacent its ends in a locking house (16) is connected to the associated locking rod. According to the invention the locking bolt (42) is partially inserted into the locking house (16) and is anchored there by way of the revolving spindle pin (44).

Abstract: The present invention relates to a window, comprising a case (2) and a frame (4), swingably fastened in the case by a swinging arm assembly (3). The assembly has a base plate (5), fastened to a case side piece, one end of an upper swinging arm (6) being flexibly fastened at the top of the base plate and one end of a lower swinging arm (7) being fastened at the bottom of the base in a similar way. The other ends of the arms are flexibly fastened to the top of a frame plate (8), the lower end of which supports a swinging axle (9), to be inserted into the respective side piece of the frame. Releasable locking elements are mounted between the frame and the case as well as the assembly parts, which belong thereto, respectively for a swinging limitation of the frame in relation to the case, which limitation can be cancelled. According to the invention the blocking elements are mounted adjacent the swinging center of the frame, partly at the frame plate (8) and partly at the base plate (5).

Abstract: The present invention relates to a window, comprising a case (2) and a frame (4), swingably fastened in the case by a swinging arm assembly (3). The assembly has a base plate (5), fastened to a case side piece, one end of an upper swinging arm (6) being flexibly fastened at the top of the base plate and one end of a lower swinging arm (7) being fastened at the bottom of the base in a similar way. The other ends of the arms are flexibly fastened to the top of a frame plate (8), the lower end of which supports a swinging axle (9), to be inserted into the respective side piece of the frame. Releasable locking elements are mounted between the frame and the case as well as the assembly parts, which belong thereto, respectively for a swinging limitation of the frame in relation to the case, which limitation can be cancelled. According to the invention the blocking elements are mounted adjacent the swinging center of the frame, partly at the frame plate (8) and partly at the base plate (5).