Infrared audio systems and related methods
US9712246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2015 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Nov 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/1141
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmitter for transmitting audio signals via infrared light includes a first mounting board and a first plurality of narrow angle LED emitters and a first plurality of wide angle LED emitters attached to a front surface of the first mounting board. The first plurality of narrow angle LED emitters and the first plurality of wide angle LED emitters are configured to emit a beam of infrared light having a wide portion and a narrow portion, the wide portion being proximate the LED emitters and the narrow portion being distal to the LED emitters. An infrared audio system includes a transmitter and an expansion transmitter. The expansion transmitter may include a second plurality of narrow angle LED emitters and a second plurality of wide angle LED emitters. A method of making a transmitter includes attaching a plurality of narrow angle LED emitters and a plurality of wide angle LED emitters to a mounting board of a transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.