发明名称 |
MARK READER AND APPARATUS FOR MOUNTING ELECTRONIC DEVICE |
摘要 |
A head (16) for detecting the position of a mark on a material under test comprises a lamp (33) that irradiates a circuit board (15a) with light, and a camera (31) that receives the reflection from the board (15a). A polarizer (35) is arranged in the optical path for incidence from the lamp (33) to the board (15a), and a polarizer (36) is arranged in the optical path for reflection from the board (15a) to the camera (31). The light reflected from a mark (M) can be clearly distinguished from that reflected from the other areas of the board (15a) even if the board (15a) has a high surface reflectivity.
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申请公布号 |
WO0118486(A1) |
申请公布日期 |
2001.03.15 |
申请号 |
WO1999JP04881 |
申请日期 |
1999.09.08 |
申请人 |
EVEST CORPORATION;EICHO PRECISION CO., LTD.;OHKAWA, TOMOSUKE;OKAZAKI, TADAO |
发明人 |
OHKAWA, TOMOSUKE;OKAZAKI, TADAO |
分类号 |
H05K13/08;(IPC1-7):G01B11/00 |
主分类号 |
H05K13/08 |
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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