| 发明名称 | Lamp unit | ||
| 摘要 | A lamp unit mounted in a vehicle includes a light source, a light source mounting portion on which the light source is mounted, and a projection lens having a front surface with a convex shape and configured to project light from the light source to the front of the lamp unit. When looking at the lamp unit from the front, the front surface of the projection lens takes a substantially round shape which is centered at an optical axis of the lamp unit in a position which lies closer to a front end portion and a substantially non-round shape at a rear end portion. The front surface changing gradually its shape from the substantially round shape to the substantially non-round shape in a region between the position and the rear end portion as it extends from the position towards the rear end portion. | ||
| 申请公布号 | US8920012(B2) | 申请公布日期 | 2014.12.30 |
| 申请号 | US201313871574 | 申请日期 | 2013.04.26 |
| 申请人 | Koito Manufacturing Co., Ltd. | 发明人 | Yagi Takayuki |
| 分类号 | F21V5/04;F21S8/10 | 主分类号 | F21V5/04 |
| 代理机构 | Osha Liang LLP | 代理人 | Osha Liang LLP |
| 主权项 | 1. A lamp unit configured to be mounted in a vehicle, comprising: a light source; a light source mounting portion on which the light source is mounted; and a projection lens having a front surface with a convex shape and configured to project light from the light source to the front of the lamp unit, wherein when looking at the lamp unit from the front, the front surface of the projection lens takes a substantially round shape which is centered at an optical axis of the lamp unit in a position which lies closer to a front end portion and a substantially non-round shape at a rear end portion, the front surface changing gradually its shape from the substantially round shape to the substantially non-round shape in a region between the position and the rear end portion as it extends from the position towards the rear end portion. | ||
| 地址 | Tokyo JP | ||