Method and apparatus for contact image sensing
US10089516B2 · kind B2 · utility
73Cited by
483References
21Claims
0Family size
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Key dates
| Filing date | Aug 7, 2017 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0056
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A contact image sensor having an illumination source; a first SBG array device; a transmission grating; a second SBG array device; a waveguiding layer including a multiplicity of waveguide cores separated by cladding material; an upper clad layer; and a platen. The sensor further includes: an input element for coupling light from the illumination source into the first SBG array; a coupling element for coupling light out of the cores into output optical paths coupled to a detector having at least one photosensitive element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.