Control of light spreading with blurring element in projector systems
US10659739B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2019 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | May 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3123
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Projection systems and/or methods comprising a blurring element are disclosed. In one embodiment, a blurring element may comprise a first plate having a pattern on a first surface and second plate. The first plate and the second plate may comprise material having a slight difference in their respective index of refraction. In another embodiment, a blurring element may comprise a first plate having a pattern thereon and a second immersing material. The blurring element may be placed in between two modulators in a dual or multi-modulator projector system. The blurring element may be configured to give a desired shape to the light transmitted from a first modulator to a second modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.