US 12,102,465 B2
Three-dimensional scanner and scanning method using same
Hyunsoo Park, Seoul (KR); and Heungsik Sim, Suwon-si (KR)
Assigned to DOF INC., Seoul (KR)
Appl. No. 17/414,931
Filed by DOF INC., Seoul (KR)
PCT Filed Dec. 17, 2019, PCT No. PCT/KR2019/017922
§ 371(c)(1), (2) Date Jun. 16, 2021,
PCT Pub. No. WO2020/130598, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 10-2018-0167837 (KR), filed on Dec. 21, 2018.
Prior Publication US 2022/0061786 A1, Mar. 3, 2022
Int. Cl. A61B 6/14 (2006.01); A61B 5/00 (2006.01); A61B 6/51 (2024.01); A61C 9/00 (2006.01)
CPC A61B 6/512 (2024.01) [A61B 5/0062 (2013.01); A61B 5/0088 (2013.01); A61C 9/0053 (2013.01); A61C 9/006 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A three-dimensional (3D) intraoral scanner comprising:
a case having a cylindrical front portion having a front surface including a light outlet and a light inlet;
a light output unit disposed in the case and configured to output light into an oral cavity through the light outlet;
a reflector member detachably installed on the case and comprising a reflector configured to reflect light output through the light outlet when installed in the case;
an image sensing unit disposed in the case to receive light through the light inlet, wherein the image sensing unit is configured to acquire 2D wide scan images of teeth in the oral cavity in a wide scan mode and to further acquire 2D narrow scan images of the teeth in a narrow scan mode; and
a processor configured to generate 3D wide scan data of the teeth using the 2D wide scan images and to generate 3D narrow scan data of the teeth using the 2D narrow scan images;
wherein the processor is further configured to generate 3D model data for all of the teeth by registering the 3D wide scan data of the teeth and to register the 3D narrow scan data to the 3D model data generated in the wide scan mode.