发明名称 |
Linear encoder for position measurement in e.g. milling machine, has main grid scale arranged along preset arrangement direction, where incident angle of light is inclined at direction that is orthogonal to arrangement direction |
摘要 |
<p>The encoder (8) has a scale (10) comprising a main grid scale (16) arranged along a preset arrangement direction. Another scale (13) has a lower grid scale moved along the arrangement direction. A phototransducer device (14) is placed over the two scales at a side opposite to a light source device, receives light emitted from the device and converts the light into electrical signals. An incident angle of the light is inclined about a preset value at a direction that is orthogonal to the arrangement direction with respect to an incident direction perpendicular to a plane of the former scale.</p> |
申请公布号 |
DE102009051708(A1) |
申请公布日期 |
2010.05.06 |
申请号 |
DE20091051708 |
申请日期 |
2009.11.03 |
申请人 |
OKUMA CORPORATION |
发明人 |
KITAGAWA, KOJI |
分类号 |
G01D5/36;G01B11/02;G01D5/26;G01D5/347 |
主分类号 |
G01D5/36 |
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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