Spectrophotometer and liquid chromatography system
US7787120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2008 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Nov 20, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/148
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Detection sensitivity is improved by increasing the amount of light of beams that irradiate a sample cell without causing saturation of a detector with ultraviolet beams or visible beams. This spectrophotometer includes a sample cell, which stores a sample to be measured, a visible light source and an ultraviolet light source each for supplying an incident beam that enters the sample, a spectroscope, which disperses a beam that has passed through the sample, an optical detector, which detects beams dispersed from such beam (spectrum), and a dichroic element which reflects or transmits ultraviolet beams from the ultraviolet light source and which transmits or reflects visible beams from the visible light source. Optics are configured such that ultraviolet beams and visible beams that have passed through or have been reflected by the dichroic element enter the sample cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.