Reflection type screen
US10248016B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 2018 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Apr 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/602
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflection type screen including: a base portion which is tabular; and 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 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 the reflecting layer includes, on the one of the pair of surfaces, a first thin portion, a thick portion and a second thin portion in this order from a side of an intersection line of the one of the pair of surfaces and the other of the pair of surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.