| 摘要 |
The invention relates to the use of a sighting measurement bracket, a sighting measurement bracket for determining the frame lens angle of an eyeglass frame using a video centering system, and a method for determining the frame lens angle. The sighting measurement bracket comprises a cross member (3), which has two markings (20) and can be placed on the eyeglass frame (1) and can be locked by means of a clamping device (4, 5). The clamping device (4, 5) comprises two clamping element pairs (7, 10), of which the respective lower clamping element (10) lies against the eyeglass frame in a resilient manner and likewise has a marking (19). According to the invention, each clamping element pair (7, 10) is arranged in a vertical shaft (11) at a distance from the rear side of the cross member (3). The lower, resilient clamping elements (10) are rigidly connected to said shaft (11) and are arranged so as to be slidable and horizontally pivotable. The markings (19) of the lower, resilient clamping elements (10) are arranged at a distance from the shaft (11) in the direction of the video centering system, and the markings (20) of the cross member (3) are respectively positioned in the fastening plane of the clamping element pairs (7, 10). The sighting measurement bracket has the advantage that the sighting measurement bracket is very light and can be operated well and placed on the glasses frame (1) by hand.
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