Optical space transmission apparatus and information transmission method
US6658214B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1999 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jun 24, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1125
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides an optical space transmission apparatus which is applied for communication of information using a light beam which propagates in the space and can reduce the frequency of replacement of a light emitting element while the construction is simple. An information signal of an operation condition which relates to transmission of a communication light beam or reception of a reception light beam is communicated with another optical space transmission apparatus together with an information signal so that the transmission side apparatus can grasp a result of reception of the light beam by the reception side apparatus and send out the light beam with a suitable light amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.