Infrared interactive remote control device and projection system using same
US9891440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2012 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Aug 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/53
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are infrared interactive remote control devices and projection systems using same, which can distinguish an indication state and an interactive control state. A pattern disc rotatable around a rotating shaft is provided in the infrared interactive remote control device. In a normal state, a visible light source works independently, and indication pattern holes in the pattern disc are positioned on an optical path to allow visible light to pass through, so that indication light spots corresponding to the indication pattern holes are formed. When a control button is pressed down, the visible light source and an infrared light source work together, and the pattern disc is driven to rotate, so that the control pattern holes are positioned on the optical path to allow the visible light to pass through, and control light spots corresponding to the control pattern holes are formed to indicate an interactive control state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.