Optical locking system and entrance guard system
US9857224B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 19, 2017 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Jan 19, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/954
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An optical locking system comprises a light emitter, an optical wavelength identifying system, and a locking unit. The optical wavelength identifying system comprises an optical wavelength detecting device, a memory, a modulator, a comparison module, and an instruction module. The optical wavelength detecting device comprises a polarizer, a detecting element, a measuring device, and a data processor. The detecting element configured to form a temperature difference or a potential difference between two points of the detecting element when exposed to the polarized light, wherein the detecting element comprises a carbon nanotube structure comprising a plurality of carbon nanotubes oriented along the same direction, and angles between a polarizing direction of the polarized light and an oriented direction of the plurality of carbon nanotubes is adjustable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.