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1. (WO2018128611) 3D INTRAORAL CAMERA USING FREQUENCY MODULATION
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Pub. No.: WO/2018/128611 International Application No.: PCT/US2017/012274
Publication Date: 12.07.2018 International Filing Date: 05.01.2017
IPC:
G01B 9/02 (2006.01) ,A61B 5/00 (2006.01) ,G01S 17/32 (2006.01)
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9
Instruments as specified in the subgroups and characterised by the use of optical measuring means
02
Interferometers
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17
Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02
Systems using the reflection of electromagnetic waves other than radio waves
06
Systems determining position data of a target
08
for measuring distance only
32
using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves
Applicants:
CARESTREAM DENTAL TECHNOLOGY TOPCO LIMITED [GB/GB]; Cleveland House 33 King Street London SW1Y 6RJ, GB
Inventors:
FAN, Chuanmao; US
WONG, Victor, C.; US
Agent:
COURSEY, Robert Stevan; US
Priority Data:
Title (EN) 3D INTRAORAL CAMERA USING FREQUENCY MODULATION
(FR) CAMÉRA INTRA-ORALE 3D UTILISANT UNE MODULATION DE FRÉQUENCE
Abstract:
(EN) An apparatus for oral imaging has a light source energizable to generate a light frequency signal ranging from a minimum to a maximum frequency. An image acquisition apparatus scans the generated light frequency signal to successive positions on a sample surface and to combine a returned signal from each successive position with the generated light frequency signal. The image acquisition apparatus has a detector that obtains a beat frequency signal from the combined returned signal and the generated light frequency signal. A processor that is in signal communication with the detector generates a processed beat signal from the combined signals, wherein the processed beat signal is indicative of the distance from the tunable laser source to the sample surface at the corresponding position. A display is in signal communication with the processor and is energizable to display distance data according to the processed beat signal for each scanned position.
(FR) L'invention concerne un appareil d'imagerie orale qui comprend une source lumineuse pouvant être excitée pour générer un signal de fréquence lumineuse allant d'une fréquence minimale à une fréquence maximale. Un appareil d'acquisition d'image balaye le signal de fréquence lumineuse généré sur des positions successives sur une surface d'échantillon et pour combiner un signal renvoyé à partir de chaque position successive au signal de fréquence lumineuse généré. L'appareil d'acquisition d'image comprend un détecteur qui obtient un signal de fréquence de battement à partir du signal renvoyé combiné et du signal de fréquence lumineuse généré. Un processeur qui est en communication de signal avec le détecteur génère un signal de battement traité à partir des signaux combinés, le signal de battement traité étant indicatif de la distance de la source laser accordable à la surface d'échantillon à la position correspondante. Un dispositif d'affichage est en communication de signal avec le processeur et peut être excité pour afficher des données de distance conformément au signal de battement traité pour chaque position balayée.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, 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, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, 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, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)