发明名称 |
METHOD AND APPARATUS TO FOLD OPTICS IN TOOLS FOR MEASURING SHAPE AND/OR THICKNESS OF A LARGE AND THIN SUBSTRATE |
摘要 |
A semiconductor measuring tool has a folding mirror configuration that directs a light beam to pass the same space multiple times to reduce the size and footprint. Furthermore, the folding mirrors may reflect the light beam at less than forty-five degrees; thereby allowing for smaller folding mirrors as compared to the prior art. |
申请公布号 |
US2014029016(A1) |
申请公布日期 |
2014.01.30 |
申请号 |
US201213561377 |
申请日期 |
2012.07.30 |
申请人 |
WANG CHUNHAI;HUANG CHUNSHENG;ZENG ANDREW AN;GOODMAN FREDERICK ARNOLD;TANG SHOUHONG;ZHANG YI;KLA-TENCOR CORPORATION |
发明人 |
WANG CHUNHAI;HUANG CHUNSHENG;ZENG ANDREW AN;GOODMAN FREDERICK ARNOLD;TANG SHOUHONG;ZHANG YI |
分类号 |
G01B11/06;G02B5/08 |
主分类号 |
G01B11/06 |
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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