Tip angle detection method for coded levelling beam
摘要
The angle detection method involves using an electronic levelling device with an optical imaging system (5), a position-sensitive optoelectronic detector (8) and a processor (9). The code pattern obtained from the levelling beam via the optical imaging system is compared with a reference code pattern, the obtained difference used for evaluating the distortion function of the code elements, in turn used to determine the tip angle.Pref. the distance (So) between the optical imaging system and the levelling beam is corrected via a trigonometric method, in dependence on the determined tip angle.
申请公布号
DE4438759(C1)
申请公布日期
1995.11.02
申请号
DE19944438759
申请日期
1994.10.29
申请人
LEICA AG, HEERBRUGG, CH, NIEDERLASSUNG: LEICA AG, 35578 WETZLAR, DE