Glass block dichroic beamsplitters
US9423622B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Mar 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/149
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A dichroic beamsplitter has a composite prism that has at least first and second prism elements that are coupled together along facing surfaces, wherein the respective facing surfaces of the first and second prism elements are equidistant from each other. The composite prism has a first flat external surface that lies within a first plane, a second flat external surface that lies within a second plane that is perpendicular to the first plane, a third flat external surface that lies within a third plane that is parallel to the second plane, and a coated surface internal to the composite prism and having a multilayer thin-film dichroic beamsplitter coating, wherein the coated surface lies within a fourth plane that intersects at least one of the first, second, and third planes at an angle that is less than about 25 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.