Spectrometer, and image evaluating unit and image forming device incorporating the same
US8964176B2 · kind B2 · utility
4Cited by
5References
10Claims
0Family size
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Key dates
| Filing date | Mar 5, 2013 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jun 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/503
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrometer includes a light source to project a light beam to a target object, an optical element including a plurality of apertures through which the light beam reflected by the target object transmits, a diffraction element to form diffracted images from a plurality of light beams having transmitted through the optical element, and a light receiving element to receive the diffracted images formed by the diffraction element and including an optical shield to block a diffracted image other than a certain-order diffracted image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.