| 摘要 |
A vehicle lighting unit (10, 10A) is capable of improving the design freedom (such as that for forming a high-beam light distribution pattern) and to allow an observer to visually recognize the employed projection lens (16) even including a plurality of lens portions (including a plurality of rear-side focal points) as a single lens with high aesthetic feature. The vehicle lighting unit (10, 10A) can include: a projection lens (16) including a first lens portion (12) disposed on a first optical axis (AX 1 ) and having a front lens surface (12a) and a rear lens surface (12b), and a rear-side focal point (F 12 ), and a second lens portion (14L, 14R) disposed at least on one of right side and left side of the first lens portion (12) and on a second optical axis (AX 2L , AX 2R ) and having a front lens surface (14La. 14Ra) and a rear lens surface (14Lb, 14Rb), and a rear-side focal point (F 14L , F 14R ) ; a first optical unit (18) disposed behind the first lens portion (12); and a second optical unit (20L, 20R, 40L, 40R) disposed behind the second lens portion (14L, 14R). The front lens surfaces (12a, 14La, 14Ra) of the first and second lens portions (12, 14L, 14R) can be formed as a single continuous convex lens surface without any step. The first optical unit (18) can include: a first light source (18) disposed behind the rear-side focal point (F 12 ) of the first lens portion (12) and near the first optical axis (AX 1 ) and emitting light upward; a first reflecting surface (24) configured to reflect light emitted upward from the first light source (22) so as to converge the reflected light at or near the rear-side focal point (F 12 ) of the first lens portion (12) and cause the light to pass through the first lens portion (12), thereby forming a low-beam light distribution pattern (P1) of projected light in an illumination direction; and a first shade (26) disposed at or near the rear-focal point of the first lens portion (12). The second optical unit (20L, 20R, 40L, 40R) can be configured to provide light that can pass through the second lens portion (14L, 14R) to form a prescribed light distribution pattern (P2L, P2R) in the illumination direction. |
