| 摘要 |
The invention relates to referencial optical systems said referencial optical system essentially comprising a body (107) in the form of a revolution cylinder of radius r, two points (101, 102) with contrasting luminosity with relation to the body, two lines (104, 105) to connect the two points to the body such that the two points are situated at the same distance R from the rotational axis of the cylinder, R being greater than r and a fin (106) fixed to the body (107) between the two lines (104, 105), essentially in a longitudinal plane P<SUB>lg</SUB> including the rotational axis (103) of the cylinder. The height of the fin (106) taken from the axis (103) is fixed such that the tip thereof is on a straight line called "of sight" D<SUB>v1</SUB> D<SUB>vt</SUB> passing through the two points (101, 102). Of application, in particular, for the production of 3D optical images. |
