Visible light communication system
US9614625B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 23, 2013 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/116
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a visible light communication system including a transmission device and a receiving device arranged separately in a vertical direction and provided so as to relatively move in a horizontal direction, which transmits data from the transmission device to the receiving device by optical space transmission using visible light, the transmission device includes a first light emitting part outputting visible light, and the first light emitting part has a light source emitting visible light and a correction part correcting the light radiated from the light source so as to uniform a light intensity distribution on a horizontal plane. Even when the transmission device and the receiving device arranged separately in the vertical direction relatively move in a horizontal direction, data can be stably transmitted and received by the optical space transmission using visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.