Deep view display screen
US11307334B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2019 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jul 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B35/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention describes an image display apparatus for directing an image towards an observer. The apparatus comprises a source of image point rays; a collimating device configured to collimate image point rays to produce collimated image rays; and, a prism sheet configured to receive the collimated image rays. The prism sheet comprises an array of micro-prisms, each micro-prism having two reflective facets arranged such that each collimated image ray is reflected off one facet and then an adjacent facet. Reflection from the second facet reorients the collimated image rays towards an image observation zone. The collimated image rays from an upper portion of the prism sheet converge with collimated image rays from a lower portion of the prism sheet within the image observation zone. The present invention also describes a method for directing an image towards an observer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.