Optical body, lighting device, and image display device
US12235471B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Sep 19, 2019 |
| Grant date | Feb 25, 2025 |
| Priority date | — |
| Expiry date | Apr 3, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F9/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an optical body, a lighting device, and an image display device that are novel and improved, and can increase a homogeneous light distribution property. The optical body is provided in which a composite structure of main structural bodies is deployed continuously within a plane of a base material, in which phase distributions of the main structural bodies within the plane of the base material are equivalent to amplitude distributions each obtained by subjecting a pupil function of a two-dimensional optical aperture to Fourier transform, and a peak ratio value is less than or equal to 2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.