Optical body, diffuser plate, display device, projection device, and lighting device
US11531144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2017 |
| Grant date | Dec 20, 2022 |
| Priority date | — |
| Expiry date | Aug 16, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
To suppress, in an optical body in which a microlens array as a non-periodic structure is arranged and deployed in a wide range, occurrence of periodic optical properties in a structural unit larger than the non-periodic structure. The optical body includes a single non-periodic structure region or a collection of a plurality of non-periodic structure regions, the non-periodic structure region being composed of a single lens group including a plurality of single lenses. In the non-periodic structure region, a located state of the single lens group is non-periodic as a whole. A ratio of a size of the non-periodic structure region to an average aperture diameter of the single lenses in the non-periodic structure region is more than or equal to 25.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.