Apparatus and method for performing in-line lens-free digital holography of an object
US9811051B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2014 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Dec 2, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/843
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to apparatuses and methods for performing in-line lens-free digital holography of objects. At least one embodiment relates to an apparatus for performing in-line lens-free digital holography of an object. The apparatus includes a point light source adapted for emitting coherent light. The apparatus also includes an image sensing device adapted and arranged for recording interference patterns resulting from interference from light waves directly originating from the point light source and object light waves. The object light waves originate from light waves from the point light source that are scattered or reflected by the object. The image sensing device comprises a plurality of pixels. The point light source comprises a broad wavelength spectrum light source and a pinhole structure. The image sensing device comprises a respective narrow band wavelength filter positioned above each pixel that filters within a broad wavelength spectrum of the point light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.