Light sensor modules and spectrometers including an optical grating structure
US9970816B2 · kind B2 · utility
1Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2015 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Sep 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2813
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optoelectronic module includes a light guide arranged to receive light, such as ambient light or light reflected by an object. The light guide has a diffractive grating that includes multiple sections, each of which is tuned to a respective wavelength or narrow band of wavelengths. The module further includes multiple photosensitive elements, each of which is arranged to receive light diffracted by a respective one of the sections of the diffractive grating. The module can be integrated, for example, as part of a spectrometer or other apparatus for optically determining characteristics of an object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.