| 摘要 |
The reflector has a concave reflecting surface(S). Its half surface(S/2) is delimited by a symmetrical vertical longitudinal plane (P) passed by at least 20 percent of the co-ordinate points (PT) expressed in millimetres contained in a Table 1 of this publication. The co-ordinates are given with a tolerance of about 0.5 mm and by a function of parameters A,B,C which are correction constants, for an origin (o) of a given spatial reference (X,Y Z). Preferably the half surface passes through at least 50 percent of the co-ordinates given in Table 1. |
