发明名称 |
Inspecting device, inspecting method, and method for manufacturing optical fiber |
摘要 |
A detector sequentially detects intensity distribution of transmitted light which is transmitted through a center portion of a preform. A determining section determines at least one of a position of a through hole and a size thereof on the basis of a time series of a feature value in the intensity distribution. |
申请公布号 |
US8705021(B2) |
申请公布日期 |
2014.04.22 |
申请号 |
US201213527111 |
申请日期 |
2012.06.19 |
申请人 |
ISHIDA ITARU;HAMAGUCHI HIROKI;FUJIKURA LTD. |
发明人 |
ISHIDA ITARU;HAMAGUCHI HIROKI |
分类号 |
G01N21/00 |
主分类号 |
G01N21/00 |
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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