Granted Patent B2

US 12,465,466 · App. 18/091,456 · Granted Nov 11, 2025

Inventors: Saradwata Sarkar (Redondo Beach, CA); Mark Greenwood (Granite Bay, CA); Mark Chang-Ming Hsieh (Peterborough, GB); James Lee Onslow (Cambridge, GB)

Assignee: MEDIT CORP.

A61C9/006

Abstract

Claims (38)

1 . An intraoral scanning system comprising:

a scanning device configured to illuminate an object of interest with a burst light pattern at one or more intervals and receive a set of reflected images reflected off the object of interest; and

a processing device configured to receive the set of reflected images from the scanning device and convert the set of reflected images into a three-dimensional model of the object of interest,

wherein the burst light pattern comprises a first image and a second image in succession, and

wherein one of the first image and the second image is a structured light image and the other of the first image and the second image is an unstructured light image,

wherein the structured light image is a houndstooth pattern.

2 . The intraoral scanning system of claim 1 , wherein the burst light pattern comprises the first image and the second image sequentially alternating one or more times.

3 . The intraoral scanning system of claim 1 , wherein the structured light image is a colored structured light image.

4 . The intraoral scanning system of claim 1 , wherein the unstructured light image is a blanket color.

5 . The intraoral scanning system of claim 1 , wherein the structured light image is configured to provide geometry information of the object of interest and the unstructured light image is configured to provide color information of the object of interest.

6 . The intraoral scanning system of claim 1 , wherein the unstructured light image includes a red blanket illumination, a green blanket illumination, or a blue blanket illumination.

7 . A method comprising:

alternately projecting a structured light image and an unstructured light image at one or more intervals onto an object of interest;

receiving a set of reflected images reflected off the object of interest;

generating digital data from the set of reflected images; and

transmitting the digital data to a processing device configured to generate a three-dimensional model of the object of interest from the digital data,

wherein the structured light image is a houndstooth pattern.

8 . The method of claim 7 , wherein the structured light image is a colored structured light image.

9 . The method of claim 7 , wherein the unstructured light image is a blanket color.

10 . The method of claim 7 , wherein alternately projecting the structured light image and the unstructured light image includes illuminating a burst light pattern at the one or more intervals, and

wherein the burst light pattern comprises a series of light images including the structured light image, followed by a first colored image, followed by the structured light image, followed by a second colored image, followed by the structured light image, followed by a third colored image.

11 . The method of claim 7 , wherein the structured light image is configured to provide geometry information of the object of interest and the unstructured light image is configured to provide color information of the object of interest.

12 . The method of claim 7 , wherein the unstructured light image includes a red blanket illumination, a green blanket illumination, or a blue blanket illumination.

13 . A scanning device comprising:

a first light emitting device configured to illuminate a structured light image;

a second light emitting device configured to illuminate an unstructured light image;

an image sensor;

a memory configured to store instructions; and

a processor operatively coupled to the memory and configured to execute the instructions to:

alternately project the structured light image and the unstructured light image at one or more intervals onto an object of interest by the first light emitting device and the second light emitting device,

receive a set of reflected images reflected off the object of interest by the image sensor, and

generate digital data from the set of reflected images by the image sensor for a three-dimensional model of the object of interest,

wherein the structured light image is a houndstooth pattern.

14 . The scanning device of claim 13 , wherein the scanning device further comprises a pair of mirrors directing a beam of light to the image sensor.

15 . The scanning device of claim 13 , wherein the processor is configured to illuminate a burst light pattern at the one or more intervals by the first light emitting device and the second light emitting device, and

wherein the burst light pattern comprises a series of light images including the structured light image, followed by a first colored image, followed by the structured light image, followed by a second colored image, followed by the structured light image, followed by a third colored image.

16 . The scanning device of claim 15 , wherein one of the first colored image, the second colored image, and the third colored image is a blanket blue color.

17 . The scanning device of claim 13 , wherein the structured light image is a colored structured light image.

Assignments (1)

Continuity (2)

References Cited (17)