Detecting device and optical apparatus including the detecting device
US8471218B2 · kind B2 · utility
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2References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Aug 11, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/4406
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detecting device includes a wavelength dispersion element for dispersing light into wavelengths and for emitting dispersed light, a photodetector for detecting the dispersed light, and a wavelength restriction element, which is arranged between the wavelength dispersion element and the photodetector and has an optical characteristic dependent on a wavelength, for restricting an incidence of light having a particular wavelength to the photodetector. Light that is part of the dispersed light and includes the light having has the particular wavelength is incident to the wavelength restriction element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.