发明名称 |
Method of inspecting location of optical film and system for carrying out the method |
摘要 |
A method of inspecting the location of a polarization-direction changing film relative to a transparent plate at a predetermined position. The method comprises the following steps: (a) disposing a first polarizing plate to face a first surface of the transparent plate and at a standard position at which the first polarizing plate has inner and outer peripheries, in section, defining therebetween an area corresponding to a permissible range for location of a peripheral edge of the polarization-direction changing film; (b) disposing a second polarizing plate to face a second surface of the transparent plate, in which the polarization-direction changing film is located relative to the transparent plate; and (c) observing a locational relationship between the peripheral edge of the polarization-direction changing film and the area of the first polarizing plate through the second polarizing plate so as to make a judgment as to whether the peripheral edge of the. polarization-direction changing film is within the allowable range.
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申请公布号 |
US5781288(A) |
申请公布日期 |
1998.07.14 |
申请号 |
US19960719373 |
申请日期 |
1996.09.25 |
申请人 |
CENTRAL GLASS COMPANY, LIMITED |
发明人 |
ASAKURA, MOTOH;KOBAYASHI, KAZUYA;NISHIKAWA, SHINJI |
分类号 |
G01N21/84;G01N21/896;G01N21/958;(IPC1-7):G01N21/00 |
主分类号 |
G01N21/84 |
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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