发明名称 Leveling device for a leveling instrument emitting at least two light beams
摘要 A receiver serves to determine a position in relation to a surveying leveling instrument emitting at least two light beams, one light beam rotating at least partially about an approximately horizontal axis and the other light beam rotating at least partially about an approximately vertical axis. The receiver has two receiving regions, i.e. one for each of the two light beams. The receiving regions preferably consist of two rows of light-sensitive elements, for example photocells, intersecting at a center. An additional element in each case is provided upstream of the receiving regions in the direction of passage of the light beam. As a result of this, one of the two receiving regions can either be switched on or off in each case, so in each case only the light beam associated with a receiving region is detected and/or displayed. The receiving device has LED displays arranged in accordance with the receiving regions of the receiver. The accuracy and potential uses of the leveling device are improved considerably as a result of the invention.</PTEXT>
申请公布号 US6633373(B2) 申请公布日期 2003.10.14
申请号 US20000726465 申请日期 2000.11.29
申请人 AMMANN LASERTECHNIK AG 发明人 AMMANN HANS-RUDOLF
分类号 G01C5/00;G01C15/00;(IPC1-7):G01C5/00 主分类号 G01C5/00
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