| 发明名称 |
LIGHTING APPARATUS AND IMAGE READING APPARATUS |
| 摘要 |
A lighting apparatus includes a first illumination portion and a second illumination portion. The first illumination portion and the second illumination portion respectively include a bar-like light guide whose shape of an end face of an end portion includes a part of a circle, an ellipse or a parabola, and light source elements that are provided to face the end face of the end portion of the light guide. In the light guide of the second illumination portion, light enters a determined range in which a focus of the shape of the end face of the end portion of the light guide is included. In the light guide of the first illumination portion, light enters a range that is not the determined range in which the focus of the shape of the end face of the light guide is included. |
| 申请公布号 |
US2017085738(A1) |
申请公布日期 |
2017.03.23 |
| 申请号 |
US201515126516 |
申请日期 |
2015.03.03 |
| 申请人 |
Mitsubishi Electric Corporation |
发明人 |
MATSUZAWA Taku;FUJIUCHI Akiko;SHOJI Toshiaki |
| 分类号 |
H04N1/03;G03B27/72;G02B13/00;G02B3/00;H04N1/028;F21V8/00 |
主分类号 |
H04N1/03 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A lighting apparatus comprising a first illumination portion and a second illumination portion, each including a bar-like light guide that includes an end face of a peripheral shape that includes at least a part of a circle, an ellipse or a parabola, and light source elements provided to face an end face of the light guide,
wherein light enters the light guide of the second illumination portion in a determined range in which a focus of the circle, the ellipse or the parabola included in the shape of the end face of the light guide is included, and wherein light enters the light guide of the first illumination portion in a range that is not the determined range in which the focus of the circle, the ellipse or the parabola included in the shape of the end face of the light guide is included. |
| 地址 |
Chiyoda-ku JP |
