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公开(公告)号：US3560095A
公开(公告)日：1971-02-02
申请号：US3560095D
申请日：1969-05-26
Applicant: AGA AB
Inventor： THORLIN CHARLES FREDRIK WILHEL
Abstract: IN A THEODOLITE, THE OPTICAL AXIS IS DEFLECTED BY A MIRROR ATTACHED TO A ROTATABLE DISK HAVING A CIRCUMFERENTIAL SCALE GRADUATED IN ANGLES. TO ELIMINATE ERRORS OF CENTRICALLY OF THE DISK AXIS RELATIVE TO THE SCALE, THE DISK IS REVERSIBLE ABOUT THE AXIS OF ROTATION AND THE MIRROR IS PROVIDED WITH A REFLECTIVE SURFACE ON THE REAR SIDE, SCALE MARKINGS BEING PROVIDED FOR READING OFF A VALUE 180* DIFFERENT FROM THAT CORRESPOND TO THE ORIGINAL POSITION.
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2.发明授权Distance measuring device having a common optical system for the transmitted and received beams 失效具有传输和接收的通用光通信系统的距离测量设备
公开(公告)号：US3551050A
公开(公告)日：1970-12-29
申请号：US3551050D
申请日：1968-11-07
Applicant: AGA AB
Inventor： THORLIN CHARLES FREDRIK WILHEL
CPC classification number: G01S7/4813
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