Method and apparatus for contact image sensing
US9727772B2 · kind B2 · utility
88Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2014 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jul 30, 2034 |
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.