公开(公告)号：WO1990005281A1

公开(公告)日：1990-05-17

申请号：PCT/CH1989000193

申请日：1989-11-06

Applicant: SANDER ELEKTRONIK AG ,  SANDER, Robert

Inventor： SANDER ELEKTRONIK AG

IPC: G01C15/00

CPC classification number: E02F3/842 ,  G01C15/006

Abstract: A mobile laser beam receiver fitted on an earth mover can receive the rotating laser beam radiated by a laser levelling device from all directions. The receiving components are photodiodes (F) arranged on a printed circuit board at 90° to one another. If several printed circuit boards are arranged one above the other the laser beam can be received in several planes.