Projector including polarization separation element and rotating prism
US9529247B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 2012 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Oct 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/365
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projector including at least one light source, a polarization separation element that separates light from the light source into two linearly polarized light beams whose polarization axes are orthogonal to each other to emit the two linearly polarized light beams in the same direction, a TIR prism that transmits through the two linearly polarized light beams, a reflective light modulation element that receives the two linearly polarized light beams that have been emitted from the TIR prism to modulate and reflect the two linearly polarized light beams toward the TIR prism, a projection lens that enlarges and projects the two linearly polarized light beams that have been modulated by the reflective light modulation element and that have been transmitted through the TIR prism, and a rotating prism being rotatably arranged in an optical path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.