# US 2013/0278982 A1 · Device and Method for Holographic Reflection Imaging > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0278982 A1 - Document ID: US20130278982A1 - Status: Published application - Kind: A1 - Application number: 13/869,703 - Filed: 2013-04-24 - Published: 2013-10-24 - Earliest claimed: 2012-04-24 - Assignees: Imec - Applicants: Imec - Inventors: Roeland Huys; Richard Stahl; Geert Vanmeerbeeck; Peter Peumans - Web page: https://patentgrep.com/patent/US20130278982A1 ## CPC - G03H 1/26: Processes or apparatus specially adapted to produce multiple {sub-} holograms or to obtain images from them, e.g. multicolour technique - G03H 1/0402: {Recording geometries or arrangements (G03H1/0443, G03H1/0476, G03H1/16 take precedence)} - G03H 1/0443: {Digital holography, i.e. recording holograms with digital recording means (holobject computation G03H1/0866)} - G03H 1/0465: {Particular recording light; Beam shape or geometry (G03H1/06 takes precedence)} - G03H 2001/005: {in microscopy, e.g. digital holographic microscope [DHM]} - G03H 2001/0212: {Light sources or light beam properties (G03H1/06, G03H1/24 take precedence; corresponding details, see subgroups of G03H2222/00)} - G03H 2001/0447: {In-line recording arrangement} - G03H 2222/34: Multiple light sources - G03H 2226/11: Electro-optic recording means, e.g. CCD, pyroelectric sensors - G03H: HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements G02B5/32; producing stereoscopic or other three-dimensional effects G02B30/00; diffraction-grating systems G02B27/44; systems using moiré fringes G02B27/60; optical logic elements G02F3/00; stereo-photography G03B35/00; photosensitive materials or processes for photographic purposes G03C; {stereo-photographic or similar processes G03C9/00}; apparatus for processing exposed photographic materials G03D; analogue computers performing mathematical operations with the aid of optical elements G06E3/00; authentication by radiation, of concealed information carried by holograms or diffraction gratings G06K19/16; holographic storage G11B7/0065, G11C13/04; {stereoscopic or other three dimensional effects in television systems H04N13/00}) ## Abstract A holographic imaging device for imaging an object under study includes a partially reflective surface having a contact side for contacting the object under study and an imaging side for partially reflecting a radiation wave. The device also includes at least one radiation source for projecting the radiation wave onto the imaging side of the partially reflective surface and an image sensor arranged to receive the radiation wave when reflected by the partially reflective surface. The image sensor is adapted for determining an interference pattern between the radiation wave reflected by the imaging side of the partially reflective surface and the radiation wave reflected by the object under study when contacting the contact side of the partially reflective surface. ## Claims ### Claim 1 A holographic imaging device for imaging an object under study, the device comprising: a partially reflective surface having a contact side for contacting the object under study and an imaging side for partially reflecting a radiation wave; at least one radiation source for projecting the radiation wave onto the imaging side of the partially reflective surface; and an image sensor arranged to receive the radiation wave when reflected by the partially reflective surface, the image sensor being adapted for determining an interference pattern between the radiation wave reflected by the imaging side of the partially reflective surface and the radiation wave reflected by the object under study when contacting the contact side of the partially reflective surface. ### Claim 2 (depends on 1) The device according to claim 1, furthermore comprising a slab of transmissive material having a first surface arranged on the image sensor and a second surface being the partially reflective surface. ### Claim 3 (depends on 1) The device according to claim 1, wherein the radiation source is located between the image sensor and the partially reflective surface. ### Claim 4 (depends on 1) The device according to claim 1, wherein the radiation source is located on the image sensor. ### Claim 5 (depends on 1) The device according claim 1, wherein the image sensor comprises at least one aperture optically coupled to the radiation source for imparting a spatial coherence to the radiation wave. ### Claim 6 (depends on 5) The device according to claim 5, wherein the at least one radiation source is located inside the at least one aperture. ### Claim 7 (depends on 5) The device according to any of claim 5, further comprising a MEMS-based optical valve arranged on the image sensor for shutting the aperture. ### Claim 8 (depends on 1) The device according to claim 1, wherein the at least one radiation source comprises a MEMS device for directing the radiation wave towards the partially reflective surface. ### Claim 9 (depends on 1) The device according to claim 1, furthermore comprising a semi-transparent prism having a first surface arranged on the image sensor and a second surface being the partially reflective surface. ### Claim 10 (depends on 1) The device according to claim 1, wherein the at least one radiation source comprises one or more of an optical waveguide, light emitting diode, or a laser. ### Claim 11 (depends on 1) The device according to claim 1, furthermore comprising an actuating means for moving the image sensor in relation to one or more of the object under study or the at least one radiation source for recording multiple images from the object. ### Claim 12 (depends on 1) The device according to claim 1, wherein the image sensor comprises a multispectral or hyperspectral image sensor. ### Claim 13 (depends on 1) The device according to claim 1, wherein the at least one radiation source comprises a plurality of light sources for emitting light of different wavelengths. ### Claim 14 A method for imaging an object under study, the method comprising: bringing an object under study into contact with a partially reflective surface; impinging an at least partially coherent radiation wave on the partially reflective surface; partially reflecting the radiation wave from the partially reflective surface and partially transmitting the radiation wave through the partially reflective surface; reflecting a radiation wave transmitted through the partially reflective surface from the object under study; and determining an interference pattern between a radiation wave reflected by the partially reflective surface and a radiation wave reflected by the object under study. ### Claim 15 (depends on 14) The method according to claim 14, furthermore comprising reconstructing an image representation of the object under study taking into account the interference pattern.