Spectroscopic device
US7623243B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2004 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Oct 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectroscopic device that can suppress the occurrence of cross-talk when light beams of different wavelength ranges are optically received is provided. Detected light is made incident to a dichroic minor (hereinafter referred to as “mirror”) DM1 along the perpendicular direction of a photoelectric surface 7. Accordingly, light transmitted through the mirror DM1 is made incident substantially perpendicular to the photoelectric surface 7. On the other hand, light reflected from the mirror DM1 is reflected from a main mirror surface 23. At this time, the dichroic mirror array 21 is inclined so that the mirror DM8 side having the minimum shortest wavelength is nearer to the photoelectric surface 7 than the minor DM1 side having the maximum shortest wavelength and substantially parallel to the main minor surface 23a, so that light reflected from the main mirror surface 23a is made incident to the mirror DM2 along the perpendicular direction of the photoelectric surface 7. Accordingly, light transmitted through the mirror DM2 is made incident substantially perpendicular tote photoelectric surface 7. As described above, the light transmitted through each mirror DMn is substantially vert…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.