| 摘要 |
The output surface (54) of the beam spread optics (42) is adjacent to a part of the input surface (56) of the principal lens (18). The beam spread element (42) is a secondary lens formed in a part of the principal lens. . <??>Automobile headlamp (10) of the type having a principal optical system (23) which includes a principal optical axis (A-A), a principal light source (16), an elliptical type principal reflector (14) whose focal point is in the region of the source (16), and a principal convergent lens (18) whose focal point passes near to a second focal point of the principal reflector. The headlamp includes a secondary optical system (36) including: <??>(a) a secondary light source (48) at the rear of the principal lens (18) and outside the path of the beam emitted by the principal source (16); a beam spread optical part (42), inserted between the secondary source (48) and the output surface (19) of the principal lens, which receives rays emitted by the secondary source on its input surface (52) and which spreads them over its output surface (54) so as to form at the output of the principal lens a sidelight/parking light or day running light. |
