Diffuser
US11340387B2 · kind B2 · utility
0Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Jul 31, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0268
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffusion element is configured by combining: a structure for diffusion constituted by combining periodic surface structures having multiple periods to achieve a light intensity distribution in which the light intensity is uniform at angles less than or equal to a predetermined diffusion angle θ and the light intensity is as close as possible to zero intensity at angles greater than the diffusion angle θ; and a diffractive structure having a period of 1 or more and 2 or less times of Λmax, where Λmax is the maximum period of the structure for diffusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.