Diffuser
US11327206B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2019 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Apr 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0012
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A diffuser provided with plural shapes obtained by translation on an xy plane of at least one of z=g(x, y) and z=−g(x, y), z=g(x, y) being a smooth function within a rectangle having sides of length of s in x direction and sides of length of t in y direction, the origin being the center of the rectangle, wherein on the sides of the rectangle, and wherein z=g(x, y) has a single vertex at (xv,yv)g(x,y)=h1(x)·h2(y),first derivative ofz=h1(x) is continuous in second derivative of z=h1(x) has a single point of discontinuity in first derivative of z=h2(y) is continuous in and second derivative of z=h2(y) has a single point of discontinuity in
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.