Method for determining absolute spatial coordinates of at least one point on a reflecting surface

摘要

PCT No. PCT/DE95/01579 Sec. 371 Date May 28, 1997 Sec. 102(e) Date May 28, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/14794 PCT Pub. Date May 23, 1996By localizing a location D on an optical axis, a virtual image is determined and compared with a measured virtual image. Using an iterative method, a location D can be shifted until the calculated and measured virtual images coincide and these data can then be used to determine an absolute spatial co-ordinate for a point on the surface. This method can be used, for example, in charting the surface of the cornea of an eye which has a reflecting film of tears.