Optical touch display apparatus
US8493365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2010 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Aug 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0428
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical touch display apparatus includes the following. A light distribution adjustment device is disposed in a transmission path of a visible beam emitted by a visible light emitting device. A non-visible light guide module includes a light guide unit and a dichroic unit. A light guide unit is disposed in the transmission path of the visible beam from the light distribution adjustment device. The dichroic unit is disposed on a surface of the light guide unit. A non-visible light emitting device is disposed beside a side surface of the light guide unit. A display panel is disposed beside the light distribution adjustment device. A sensing space is located in front of the display panel, and the display panel is disposed between the light distribution adjustment device and the sensing space. An optical detector is disposed outside the display panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.