D4d Technologies, LLC

Scapeware3d, LLC

Sentient Reality LLC

Henley S Quadling

Mark S Quadling

Rod A Duncan

Alan Blair

Ye Li

Andrei Tchouprakov

Justin G Graham

Grant E Kenworthy

Basil A Haymann

Joel Witt

Glen Freeman

Radu Gheorghe

Greg R Basile

Roman Sokolov

Garret T Bonnema

Branko Bem

Jeffrey Theorin Prince

Lasse H Toimela

Jorey A Chernett

Rui Xu

Branko Bern

Thomas S Scaman

Kirk Ray

Anthony Starfield

Howard Frysh

Gregory R Basile

An intra-oral scanning device includes a light source and an optical system, and communicates with a display system. The device provides for more efficient transmission and capture of images. It integrates OCT scanning with RGB-based scanning. In operation, the device is used for recording topological characteristics of teeth, dental impressions, or stone models by digital methods and for use in CAD/CAM of dental restorative prosthetic devices. To that end, the RGB-based scan obtains surface data (e.g., a margin), while the OCT scan penetrates the surface. The two scanners operate from within the same physical housing and preferably at the same time such that only one scanning pass (to obtain all necessary data) is required. The 3D data obtained from the OCT scan is registered with the 3D data obtained from the RGB-based scan by virtue of being captured using a common return path. Preferably, the 3D surface data is used to align the volume data, such that the OCT scan operates over a much sparser scanning volume than would otherwise be required if the OCT scan were carried out separately. In this manner, there is less stitching of data required to build the output images, thereby enabling a 'one-pass' operation.

Intra-oral scanning device with integrated optical coherence tomography (OCT)

An intra-oral scanning device includes a light source and an optical system, and communicates with a display system. The device has a reduced form factor as compared to prior devices, and it provides for more efficient transmission and capture of images.

Intra-oral scanning device

The subject matter relates generally to devices configured to be attached to fingers and/or the hands of persons and which may aid in the playing of musical instruments. These devices are custom made to fit the fingers of a particular musician or aspiring musician precisely and optionally include an additional feature or element at the tip which beneficially improves the ability to play. These devices also may protect the fingers from the adverse effects of prolonged playing. These devices may be used independently on each finger, or may be combined together into a glove with the finger devices attached to the rest of a custom fitting glove.

Finger protector, and method of making

An intra-oral scanning device includes a light source and an optical system, and communicates with a display system. The device captures images of an object of interest, e.g., patient teeth or associated anatomy, by projecting the light source as a first series of frames, and a second series of frames. The first series of frames projects first pattern data, and the second series of frames projects second data. The second series of frames are interleaved between frames in the first series of frames. The frames in the first series are partially-illuminated and are used to capture data for a 3D model. The frames in the second series are preferably fully-illuminated and are used to generate a live preview of the object. By displaying the live preview frames in juxtaposition to the 3D model, the operator is provided with visual feedback of the object.

Intra-oral scanning device with illumination frames interspersed with image frames

A method and apparatus are provided for a swept source optical coherence tomography (OCT) system utilizing a fast scanning mechanism in the sample arm and a slowly swept light source. The position data is collected rapidly while the wavelength of the source is swept slowly. The system reduces the sweep speed requirements of the light source enabling higher power, greater imaging range, and linear sweeps of the source frequency. The OCT components (or most of them) may be implemented within a hand held imaging probe. In operation, a triangulation scan may be used to orient the imaging probe with respect to a fixed coordinate system; preferably, OCT data captured by the device is then transformed to that same orientation with respect to the fixed coordinate system to improve the scanning results.

Swept source optical coherence tomography (OCT) method and system

An augmented reality system for integrating video imagery of an actual dental restoration into a computer-implemented display of a model (that represents a preparation, mesial/distal neighbors, and opposing occlusion) that has been generated from a 3D scan of a patient. The 3D scan data may be generated at a dental office remote from a location at which the augmented reality system is implemented. In one embodiment, the 3D scan data is provided to the augmented reality system as a digital impression.

Augmented reality system for a dental laboratory

A digitized image of an object may include representations of portions of the object that are obscured, occluded or otherwise unobservable. The image may be a multi-dimensional visual representation of dentition. Characteristics of the dentition and its surfaces, contours, and shape may be determined and/or analyzed. A light may be directed toward and reflected from the dentition. The reflected light may be combined with a reference to determine characteristics of the dentition, including obscured areas such as subgingival tissue.

Optical coherence tomography imaging

A structured light pattern digitizing method is combined with photogrammetry to determine a 3D model of an object. The structured light digitizing operation generates a 3D model of the object being scanned, and this model is then used to compute a higher accuracy model using photogrammetry.

3D photogrammetry using projected patterns

An improved milling machine makes use of individually controlled x-axis, y-axis, and z-axis carriages. These carriages provide positive and precise control of the position of the cutting tools and the blank to be cut. The tools are located in spindles that are moved in the x-axis. A work piece or blank is manipulated in the y-axis and the z-axis. The tools are offset in the x-axis. Lights on a work space door are used to signal the condition of the mill machine and the milling operation. A tool changer allows the tools to be changed to accommodate other materials. A camera or other sensor is used to detect the location and wear on the tools.

Milling machine with tool changer positionable within motion system envelope

An intra-oral laser digitizer system provides a three-dimensional visual image of a real-world object such as a dental item through a laser digitization. The laser digitizer captures an image of the object by scanning multiple portions of the object in an exposure period. The intra-oral digitizer may be inserted into an oral cavity (in vivo) to capture an image of a dental item such as a tooth, multiple teeth or dentition. The captured image is processed to generate the three-dimension visual image.

Growing community of inventors

Dallas, TX, United States of America

Henley S Quadling