US 9,811,051 B2
Apparatus and method for performing in-line lens-free digital holography of an object
Richard Stahl, Rotselaar (BE); Murali Jayapala, Boutersem (BE); Andy Lambrechts, Herent (BE); and Geert Vanmeerbeeck, Keerbergen (BE)
Assigned to IMEC VZW, Leuven (BE)
Appl. No. 15/39,549
Filed by IMEC VZW, Leuven (BE)
PCT Filed Dec. 2, 2014, PCT No. PCT/EP2014/076270
§ 371(c)(1), (2) Date May 26, 2016,
PCT Pub. No. WO2015/082476, PCT Pub. Date Jun. 11, 2015.
Claims priority of application No. 13195248 (EP), filed on Dec. 2, 2013.
Prior Publication US 2017/0031318 A1, Feb. 2, 2017
Int. Cl. G03H 1/04 (2006.01); H04N 9/04 (2006.01); H04N 5/33 (2006.01); G01N 15/14 (2006.01); G03H 1/08 (2006.01); G03H 1/02 (2006.01); G03H 1/26 (2006.01)
CPC G03H 1/0443 (2013.01) [G01N 15/147 (2013.01); G01N 15/1429 (2013.01); G01N 15/1434 (2013.01); G03H 1/0404 (2013.01); G03H 1/0465 (2013.01); G03H 1/0486 (2013.01); G03H 1/0493 (2013.01); H04N 5/332 (2013.01); H04N 9/045 (2013.01); G01N 2015/1454 (2013.01); G03H 1/0866 (2013.01); G03H 2001/0212 (2013.01); G03H 2001/0428 (2013.01); G03H 2001/0447 (2013.01); G03H 2001/0452 (2013.01); G03H 2001/0497 (2013.01); G03H 2001/266 (2013.01); G03H 2210/12 (2013.01); G03H 2210/13 (2013.01); G03H 2226/11 (2013.01); G03H 2240/62 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus for performing in-line lens-free digital holography of an object, comprising:
a point light source adapted for emitting coherent light; and
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,
wherein the object light waves originate from light waves from the point light source that are scattered or reflected by the object,
wherein the image sensing device comprises a plurality of pixels apportioned between disjoint subsets of pixels,
wherein the point light source comprises a broad wavelength spectrum light source and a pinhole structure, the broad wavelength spectrum light source being arranged to emit light towards the pinhole structure,
wherein the image sensing device comprises, for each of the disjoint subsets of pixels, a respective narrow band wavelength filter positioned above each pixel in the disjoint subset of pixels,
wherein a wavelength range of each narrow band wavelength filter falls within a broad wavelength spectrum of the point light source,
wherein the wavelength ranges of the narrow band wavelength filters are non-overlapping, and
wherein the image sensing device is adapted for receiving and recording, while subjecting the object to light waves emitted from the point light source, a plurality of interference patterns by a respective plurality of the disjoint subsets of pixels.