| 发明名称 |
LENS COATING/CONTAMINATION ELECTRONIC DETECTION |
| 摘要 |
A contamination detection apparatus may include an optical element having an outer surface and an other surface opposing the outer surface, a first capacitor plate located on the outer surface at an outer periphery of the optical element, and a second capacitor plate located on the outer surface at the outer periphery of the optical element. The second capacitor plate is located adjacent the first capacitor plate and separated from the first capacitor by a gap to form a capacitor, whereby a contaminant is electrically detected based on the contaminant entering the gap and varying a capacitance value corresponding to the capacitor. |
| 申请公布号 |
US2015070032(A1) |
申请公布日期 |
2015.03.12 |
| 申请号 |
US201314024740 |
申请日期 |
2013.09.12 |
| 申请人 |
International Business Machines Corporation |
发明人 |
Strocchia-Rivera Carlos |
| 分类号 |
G01N27/24;G01N27/22 |
主分类号 |
G01N27/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A contamination detection apparatus, comprising:
an optical element having an outer surface and an other surface opposing the outer surface; a first capacitor plate located on the outer surface at an outer periphery of the optical element; and a second capacitor plate located on the outer surface at the outer periphery of the optical element, the second capacitor plate located adjacent the first capacitor plate and separated from the first capacitor by a gap to form a capacitor, wherein a contaminant is electrically detected based on the contaminant entering the gap and varying a capacitance value corresponding to the capacitor. |
| 地址 |
Armonk NY US |
