Polarimetric linear absolute position encoder
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Mark Johnson
Abstract
Optical encoders based on measurement of the axis-angle of linear polarizers offer high resolution and moderate accuracy, but are usually restricted to rotary measurement. We show that annular polymer sheet polarizer materials can be sheared into rectangular tapes, with a polarizing axis that varies linearly along the tape. This makes possible the construction of polarimetric linear absolute position encoders. We demonstrate also sheared polymer birefringent retarders, which function similarly, potentially with cost and size-flexibility advantages.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- Does journalism in B2B publishing work?
- Community
- Report: Laser World of Photonics 2022
- Letters
- Polarimetric 360° absolute rotary encoder
- Polarimetric linear absolute position encoder
- Research Articles
- Impacts of the gradient-index crystalline lens structure on its peripheral optical power profile
- Calculation and analysis of laser hazard distances in navigable airspace for multi-beam visible CW laser radiation
Artikel in diesem Heft
- Frontmatter
- Editorial
- Does journalism in B2B publishing work?
- Community
- Report: Laser World of Photonics 2022
- Letters
- Polarimetric 360° absolute rotary encoder
- Polarimetric linear absolute position encoder
- Research Articles
- Impacts of the gradient-index crystalline lens structure on its peripheral optical power profile
- Calculation and analysis of laser hazard distances in navigable airspace for multi-beam visible CW laser radiation
