Patent SG-11201901644T-A (SG)
Title: Optical detection of vibrations
Inventor: LEIZERSON ILIA
IPC: G01H9/00
Filed: 2017-08-28
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property C.--.` MD 1101111 0 DOI HIM 011101 0 011111111111111111111111111111111111111111111 Organization International Bureau (10) International Publication Number 03 (43) International Publication Date .../ WO 2018/042424 Al 08 March 2018 (08.03.2018) WI P0 I P C T (51) International Patent Classification: (74) Agent: WEILER, Assaf et al.; Pearl Cohen Zedek Latzer G01H 9/00 (2006.01) GO1B 9/02 (2006.01) Baratz, P.O. Box 7198, Tel Aviv 6107121 (IL). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/IL2017/050957 kind of national protection available): AE, AG, AL, AM, (22) International Filing Date: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 28 August 2017 (28.08.2017) CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, (25) Filing Language: English HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, (26) Publication Language: English KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (30) Priority Data: OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 247541 29 August 2016 (29.08.2016) IL SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, 249474 29 August 2016 (29.08.2016) IL TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (71) Applicant: ELBIT SYSTEMS LAND AND C41 LTD. (84) Designated States (unless otherwise indicated, for every [IL/IL]; 5 Hagavish Street, 4250705 Netanya (IL). kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, (72) Inventors: LEIZERSON, Ilia; 5 Hagavish St., 4250705 UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, Netanya (IL). NUSSINSON, Dan; 5 Hagavish St., 4250705 TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Netanya (IL). EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (54) Title: OPTICAL DETECTION OF VIBRATIONS = — /00 = / _ 110 i i I 120--- — 92 Optical unit Coherent light source(s) = I ,... = — = — = — Scene 1 = _ 1 141--'—$ Speckle patter __ - 122 Mask s-90 ____ ..--- k b I 125 130. - DC 1 131 -.. Modulation 140 1 142 = - = 300 171 — T , me = Optionally, Imager(s) Processing unit 1 50 ,-, FIG. 1A 71- (57) : Systems and methods are provided for vibrations detection in a scene. Systems comprise at least one coherent light el 7r source configured to illuminate the scene, an optical unit configured to focus scattered light from the scene onto a pixelated detector, N . the detector configured to provide pixel intensity signals, and a processing unit configured to analyze the pixel intensity signals over the pixels of the detector to derive a vibration spectrum of elements in the scene that correspond to the pixels. The signal modulation ---- at each pixel may be used to indicate the vibrations of the scene element(s) that corresponds to the pixel(s). Vibration information GC ,_ 1 concerning the scene may be used to direct other methods of vibration measurements, such as speckle interferometry, according to © derived vibration images of the scene. N O [Continued on next page] WO 2018/042424 Al MIDEDIMOM0101011MOIERINNEDIDIEDIOHNEVOIS MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event amendments (Rule 48.2(h)) of receipt of