发明名称 |
METHOD AND DEVICE FOR DETECTING PRESENCE OR ABSENCE OF FILM IN SURFACE OF BASE BODY |
摘要 |
A method and apparatus is provided for determining the presence or absence of a coating on a substrate. The substrate is placed into optical contact with a light guide and the principle of frustrated total internal reflection is utilized. Light scattered from the coating surface is monitored to indicate the presence of a coating and failure to detect scattered light indicates the absence of said coating. |
申请公布号 |
JPS58105077(A) |
申请公布日期 |
1983.06.22 |
申请号 |
JP19820214760 |
申请日期 |
1982.12.09 |
申请人 |
JOHNSON & JOHNSON |
发明人 |
EDOUIN RANGUBAAGU |
分类号 |
G01N21/89;G01N21/55;G01N21/86;G01N21/88;G01N21/892;G01V8/12;G01V8/14;G01V8/20 |
主分类号 |
G01N21/89 |
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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