Projection device
US10634984B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Feb 26, 2019 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Feb 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3141
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical module includes an illuminating unit, an imaging unit and a projection lens. The illuminating unit includes a light source, a first collimating lens, a splitter, a microlens array and a first lens and is configured to generate a light beam. The imaging unit includes a first prism, a second prism and a display component and is configured to cover the light beam to image light containing image information. The projection lens includes a plurality of lenses and is configured to project the image light. A first axis sequentially passes through the light source, the first collimating lens, the splitter, the microlens array, the first lens, the first prism, the second prism and the lenses. The invention also provides a projection device including the optical module, a first holder and a second holder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.