Beam splitter and arrangement for examining a sample which can be excited by means of electromagnetic radiation
US10481093B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2016 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Feb 6, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/142
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for examining a sample which can be excited by means of electromagnetic radiation comprises a first dichroitic beam splitter having a first and a second prism, which are connected to one another on the base surfaces thereof, and a dichroitic layer arranged between the base surfaces of the two prisms, wherein an entry surface of the first prism encloses an angle (β) in the range from 10° to <40° with the dichroitic layer. Furthermore a light source provides the electromagnetic radiation suitable for excitation of the sample, the radiation coupled into the entry surface of the first prism, wherein a part of the radiation is reflected on the dichroitic layer in the direction of the sample, which is positioned downstream of an exit surface of the first prism. Finally, a detector detects electromagnetic radiation emitted by the sample, passed through the beam splitter and leaving the latter on a measurement surface. The invention further relates to a dichroitic beam splitter, for use in said arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.