| 发明名称 |
DISCHARGE LAMP, LIGHT SOURCE DEVICE, AND PROJECTOR |
| 摘要 |
The disclosure relates to a discharge lamp including a light emitting tube having a discharge space therein, and a pair of electrodes disposed in the discharge space so as to be opposed to each other, wherein a changing rate of a cross-sectional area is equal to or lower than 200%. The changing rate is a rate of change of the cross-sectional area in every 0.25 mm in a direction along an optical axis of the light emitting tube. The cross-sectional area is an area of a plane perpendicular to the optical axis in a space between an outside shape of at least one of the pair of electrodes and an inside wall of the light emitting tube. |
| 申请公布号 |
US2017052437(A1) |
申请公布日期 |
2017.02.23 |
| 申请号 |
US201615225208 |
申请日期 |
2016.08.01 |
| 申请人 |
SEIKO EPSON CORPORATION |
发明人 |
YOKOO Tomohiro |
| 分类号 |
G03B21/20;G03B21/14;H01J61/073 |
主分类号 |
G03B21/20 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A discharge lamp comprising:
a light emitting tube having a discharge space therein; and a pair of electrodes disposed in the discharge space so as to be opposed to each other, wherein a changing rate of a cross-sectional area is equal to or lower than 200%, the changing rate being a rate of change of the cross-sectional area in every 0.25 mm in a direction along an optical axis of the light emitting tube, the cross-sectional area being of a plane perpendicular to the optical axis in a space between an outside shape of at least one of the pair of electrodes and an inside wall of the light emitting tube. |
| 地址 |
Tokyo JP |
