Subwavelength optical microstructure light collimating films
US6570710B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Aug 14, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light collimating film has a sheeting having a first side and a second side, wherein the first side includes a series of linear optical elements having a primary axis running the length of the optical elements, and the second side includes a plurality of subwavelength optical microstructures being oriented at about 90 degrees relative to the primary axis of the linear optical elements. Another embodiment includes a back lighting display device having a lighting device, a display panel, and a sheeting having a first side and a second side, wherein the first side includes a series of linear prisms having peaks, and the second side includes a plurality of subwavelength optical microstructures being oriented at about 90 degrees relative to the peaks of the linear prisms. Yet another embodiment includes a light collimating structure having a first collimating film having a first surface with a plurality of subwavelength optical microstructures thereon and a second surface with first linear prisms having peaks, the subwavelength optical microstructures being oriented at about 90 degrees relative to the peaks of the first linear prisms, and a second collimating film having a first surfa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.