发明名称 |
Verfahren zur Feststellung von Unregelmaessigkeiten einer Flaeche |
摘要 |
A system for identifying the presence of physical surface patterns and/or areas in a surface which have different electrical conductivity characteristics from those of adjacent areas of the same surface. The system utilizes the optical characteristics of liquid crystal films having optically negative properties. |
申请公布号 |
DE2200451(A1) |
申请公布日期 |
1972.07.20 |
申请号 |
DE19722200451 |
申请日期 |
1972.01.05 |
申请人 |
XEROX CORP. |
发明人 |
EWING ADAMS,JAMES;LOUIS HAAS,WERNER ERWIN |
分类号 |
G01N21/91;G02F1/13 |
主分类号 |
G01N21/91 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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