发明名称 |
Position measuring system |
摘要 |
A position measuring system that includes a graduation support having a measuring graduation, a planar waveguide and a light source that generates light that is conducted to the measuring graduation, wherein the light is reflected at surfaces of the planar waveguide. A scanning unit for scanning the measuring graduation that includes a light-sensitive scanning area to which light modulated by the measuring graduation is conducted. The modulated light conducted to the light-sensitive scanning area has at least two different light portions, which differ in a number of reflections at the surfaces of the planar waveguide, and wherein the reflecting of the at least two different light portions occurs prior to reaching the measuring graduation.
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申请公布号 |
US2002076129(A1) |
申请公布日期 |
2002.06.20 |
申请号 |
US20010993944 |
申请日期 |
2001.11.14 |
申请人 |
HOLZAPFEL WOLFGANG;REICHHUBER SIEGFRIED |
发明人 |
HOLZAPFEL WOLFGANG;REICHHUBER SIEGFRIED |
分类号 |
G01D5/347;G02B6/12;G02B6/34;(IPC1-7):G02B6/26;G02B6/10 |
主分类号 |
G01D5/347 |
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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