Reflection type screen
US10185215B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2018 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Apr 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflection type screen including: a base portion which is tabular; and a plurality of prism portions which are provided on one surface of the base portion, extending in one direction and lined up in a direction intersecting the one direction, wherein the plurality of prism portions each have: a pair of surfaces, at least one of the pair of surfaces being inclined with respect to the normal direction of the one surface of the base portion and intersecting the other of the pair of surfaces; and a reflecting layer, being formed on the one of the pair of surfaces and reflecting light, and wherein the reflecting layer includes a low friction portion dispersed over within a reflecting portion to reflect light, having lower friction coefficient than that of the reflecting portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.