发明授权
- 专利标题: Optoelectronic incremental measuring system with adjustable LED positioning
- 专利标题(中): 光电增量测量系统,可调节LED定位
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申请号: US805850申请日: 1985-12-05
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公开(公告)号: US4695720A公开(公告)日: 1987-09-22
- 发明人: Heinz Rieder , Max Schwaiger
- 申请人: Heinz Rieder , Max Schwaiger
- 申请人地址: ATX Tarsdorf
- 专利权人: EMR Elektronische Messund Regelgerate Gesellschaft m.b.H.
- 当前专利权人: EMR Elektronische Messund Regelgerate Gesellschaft m.b.H.
- 当前专利权人地址: ATX Tarsdorf
- 优先权: ATX3856/84 19841205
- 主分类号: G01D5/26
- IPC分类号: G01D5/26 ; G01D5/347 ; G01D5/34
摘要:
An optoelectronic incremental measuring system for measuring lengths or angles comprises a scale member provided with an incremental scale and a scanning unit, which is adjustable along the scale and comprises scanning grids, which are spaced apart by an integral multiple and a fractional part of a scale increment, a plurality of optoelectronic receivers associated with respective ones of such grids, and a plurality of light-emitting diodes, which are associated with the respective grids and adapted to illuminate the associated receiver via the scale and the associated scanning grid. In such a system a movement of the scanning unit and the scale relative to each other will cause the receivers to generate phase-displaced sine signals having periods in a number depending on the number of scale increments traversed by the scanning unit. The signals generated by the receivers can be adjusted relative to each other in amplitude and phase because the positions of the light-emitting diodes are individually adjustable.
公开/授权文献
- US5908304A Mass memory and method for the manufacture of mass memories 公开/授权日:1999-06-01