| 摘要 |
The apparatus comprises two concave reflector portions (22a,22b). The reflector portions 22a, 22b confront each other and have narrow ends 14 which overlap. The reflector portions widen from respective beam-emission axes 13 to their wide ends 16. The beam-emission axes 13 are oppositely-directed. The apparatus has beam-emitting apertures 16 at the wide ends 18. A bulb 24 disposed between the overlapping narrow ends 14 of the reflector portions 22a, 22b produces two mutually divergent light beams, by reflection off the reflector portions 22a, 22b. |
