Optical interferometer
US10670461B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2015 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Sep 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/4532
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical interferometer includes a branching-combining unit, a first optical system, a second optical system, and a drive unit. The branching-combining unit includes a branching surface, an incident surface, a first output surface, a combining surface, and a second output surface on an interface of a transparent member, the branching surface partially reflects incident light and outputs as first branched light, and transmits the rest of the incident light into the interior as second branched light, the combining surface partially combines the first branched light and the second branched light to be output to the outside as first combined light, and combines the rest of the first branched light and the second branched light to be propagated into the interior as second combined light, and the second output surface partially outputs the second combined light to the outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.