Light-reflecting microstructure, projection screen and projection system
US10656513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2017 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/602
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided are a light-reflecting microstructure, a projection screen and a projection system. The light-reflecting microstructure includes a transparent structure, the transparent structure including a light incident surface, a light-reflecting surface and a light-absorption surface connecting the light incident surface and the light-reflecting surface; a light-absorption structure located on the light-absorption surface; and a reflection layer located on the light-reflecting surface. The transparent structure is configured to refract projected light incident on the light incident surface at a preset angle to the reflection layer, and refract stray light incident on the light incident surface at another angle to the light-absorption structure. The reflection layer is configured to reflect the projected light in such a manner that the projected light is emitted at a certain angle from the light incident surface after being refracted twice through the transparent structure. The light-absorption structure is configured to absorb stray light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.