Reflective optical encoder comprising a hub with an adhesive surface with a step structure
US11609106B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jul 1, 2019 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Jul 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34707
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reflective optical encoder has a hub member mounted on a rotation shaft, and a circular scale plate fixed to the hub member by an adhesive and having, on a front surface thereof, a pattern composed of high reflection portions having a high light reflectance and low reflection portions having a low light reflectance. Further, a step is provided at an outer peripheral portion of the hub member, and an outer diameter of the scale plate is larger than an outer diameter at an outermost peripheral portion of an adhesive surface of the hub member in which the scale plate and the hub member are bonded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.