Pinhole array and display device using same
US9256060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2013 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Feb 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B30/56
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Two pieces of elliptic semi-sphere surfaces, each forming a pinhole at the zenith thereof and also forming a reflection mirror on an inside thereof are stuck onto each other, with facing the interior surfaces thereof, respectively. A light ray entering therein from one of the pinholes, after being reflected between the elliptic semi-sphere surfaces facing to each other, emits from the pinhole on opposite side at an angle plane symmetric to the incident angle. Disposing the elliptic semi-sphere surfaces facing to each other, aligning on a plane, by plural numbers thereof, there is built up a pinhole array. Plural numbers of light rays reflecting on and/or emitting from a display object, which is disposed on one side of the pinhole array, after passing through the plural numbers of pinholes of the pinhole array, form an image at a position plane symmetric thereto, on the opposite side of the pinhole array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.