公开(公告)号：WO2018209091A1

公开(公告)日：2018-11-15

申请号：PCT/US2018/032073

申请日：2018-05-10

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： FRANK, Ian Ward ,  CALLAHAN, Dennis M., Jr. ,  BYRNES, Steven J. ,  MOEBIUS, Michael Gerhard ,  FAVALORA, Gregg E.

IPC: G02F1/125 ,  G02F1/335 ,  G03H1/22

CPC classification number: G02F1/335 ,  G02F1/125 ,  G02F1/332 ,  G02F2203/24 ,  G03H1/2294 ,  G03H2001/0224

Abstract: A system and method for a Surface Acoustic Wave (SAW) spatial light modulator module, or SAW device that provides varying acoustic wave speed are disclosed. The SAW device includes a substrate of a material such as lithium niobate, and a coating layer is applied to the substrate. A SAW transducer of the device is configured to produce SAW signals that propagate with a propagation velocity around an interface between the substrate and the coating layer. The SAW signals couple light signals of a light source into modulated light signals that are emitted from the bottom face and/or edge face of the substrate. In embodiments, a frequency of RF drive signals applied to the SAW transducer in conjunction with the propagation velocity of the SAW signals produces a decrease in a SAW wavelength of the SAW signals as compared to current SAW device systems and methods.

公开(公告)号：WO2018183507A1

公开(公告)日：2018-10-04

申请号：PCT/US2018/024856

申请日：2018-03-28

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： REGISTER, Joseph J. ,  CALLAHAN, Dennis M. ,  MOEBIUS, Michael G. ,  BYRNES, Steven J. ,  FAVALORA, Gregg E. ,  FRANK, Ian W.

IPC: G02F1/335 ,  G03H1/02 ,  G03H1/22 ,  H03H9/02 ,  F21V8/00 ,  G10K11/00 ,  G10K11/178 ,  G10K11/36

CPC classification number: G02F1/335 ,  G02B6/0045 ,  G02B6/005 ,  G02B6/0078 ,  G02B6/105 ,  G02B6/12004 ,  G02B6/12007 ,  G02B27/225 ,  G02B2006/0098 ,  G02B2006/12085 ,  G02B2006/12104 ,  G02B2006/12107 ,  G02F1/0353 ,  G02F1/125 ,  G02F2201/05 ,  G02F2201/18 ,  G02F2201/302 ,  G02F2201/34 ,  G02F2203/023 ,  G02F2203/07 ,  G02F2203/22 ,  G02F2203/24 ,  G02F2203/28 ,  G02F2203/58 ,  G03H1/02 ,  G03H1/2294 ,  G03H2001/0224 ,  G03H2001/2292 ,  G03H2223/16 ,  G03H2223/17 ,  G03H2225/11 ,  G03H2225/21 ,  G03H2225/34 ,  G03H2225/36 ,  G03H2225/55 ,  G10K11/002 ,  G10K11/178 ,  G10K11/17873 ,  G10K11/17875 ,  G10K11/36

Abstract: An electro-holographic light field generator device comprises surface acoustic wave (SAW) optical modulators arranged in different directions. Specifically, some embodiments have SAW modulators arranged in pairs, nose-to-nose with each other, and have output couplers that provide face-fire light emission. These SAW modulators also possibly include SAW sense transducers and/or viscoelastic surface material to reduce crosstalk.

公开(公告)号：WO2018140348A1

公开(公告)日：2018-08-02

申请号：PCT/US2018/014668

申请日：2018-01-22

Applicant: THE CHARLES STARK DRAPER LABORATORY, INC.

Inventor： FAVALORA, Gregg E. ,  SPECTOR, Steven J. ,  LANE, Benjamin F.

IPC: G02F1/295 ,  H04N13/32

Abstract: A nanophotonic phased array is configured to generate dynamic three-dimensional imagery when employed as an oscillatory beam-steering device. A scanning nanophotonic phased array generates programmable light fields. That is, a phased array generates reconfigurable light fields when controlled to perform an angular scan of incident illumination synchronized with respect to modulation of the incident illumination.