Ray tracking for intraoral 3D scanner

    公开(公告)号:US11930154B2

    公开(公告)日:2024-03-12

    申请号:US18156349

    申请日:2023-01-18

    CPC classification number: H04N13/204 G01B11/25 G06T7/521 H04N1/00018

    Abstract: An intraoral scanning system comprises and intraoral scanner and a processor. The intraoral scanner comprises one or more cameras and one or more structured light projectors, the intraoral scanner to generate a series of images using the one or more cameras, each image including at least a portion of a pattern projected by the one or more structured light projectors onto an intraoral three-dimensional surface. The processor runs a correspondence algorithm to compute respective three-dimensional positions of a plurality of features of the pattern on the intraoral three-dimensional surface, as captured in the series of images. The processor identifies the computed three-dimensional position of a detected feature of the pattern as corresponding to a particular projector ray r, in at least a subset of the series of images. The processor tracks the particular projector ray r across one or more additional images of the series of images.

    DEFFOGGING OF PROTECTIVE SLEEVE FOR INTRAORAL SCANNER

    公开(公告)号:US20240074006A1

    公开(公告)日:2024-02-29

    申请号:US18383850

    申请日:2023-10-25

    Inventor: Nir Makmel

    Abstract: An intraoral scanning device comprises a housing having a longitudinal axis and comprising a head configured for insertion into an oral cavity of a patient, the head comprising an aperture for transmission of optical signals, a transparent element positioned within the aperture, wherein the transparent element is non-orthogonal to the longitudinal axis, and a defogging unit comprising a heating unit. A protective sleeve is configured to cover at least a part of the head and comprises an additional aperture that aligns with the aperture and an additional transparent element in the additional aperture. A gap separates the additional transparent element from the transparent element when the protective sleeve is coupled to the housing. The housing and the protective sleeve are configured such that heat generated by the heating unit is transferred from the heating unit to the additional transparent element despite the gap that separates the additional transparent element from the transparent element.

    METHODS FOR PRODUCING ADDITIVELY MANUFACTURED OBJECTS WITH HETEROGENEOUS PROPERTIES

    公开(公告)号:US20240051225A1

    公开(公告)日:2024-02-15

    申请号:US18449589

    申请日:2023-08-14

    CPC classification number: B29C64/264 B29C64/386 B33Y10/00

    Abstract: Methods for manufacturing objects are provided herein. In some embodiments, a method includes receiving a digital data set representing an object, and applying energy to a curable material based on the digital data set to form the object. The object can include at least two object portions formed from the curable material using different energy application parameters. The method can further include removing residual curable material from the object. A different amount of the residual curable material can be removed from each of the at least two object portions. After the residual curable material is removed, the at least two object portions can each have different material properties.

    Systems for protecting and repositioning teeth

    公开(公告)号:US20240024757A1

    公开(公告)日:2024-01-25

    申请号:US18475906

    申请日:2023-09-27

    Inventor: Eric Kuo

    CPC classification number: A63B71/085 A61C7/08 A61F5/566 A63B2071/088

    Abstract: The present invention provides protective repositioning appliances, accommodating mouth guards, and covering guards that protect an orthodontic patient against impact-induced injuries, as well as related systems and methods. A protective appliance can include teeth receiving cavities shaped to receive and reposition a patient's teeth and can include an occlusal portion having an impact-absorbing compliance. An accommodating mouth guard can include teeth receiving cavities shaped to accommodate a patient's teeth from a first arrangement to a second arrangement and can include an occlusal portion having an impact-absorbing compliance. A covering guard can include a guard segment that covers at least a portion of an appliance. The combination of a guard segment and an appliance can provide an occlusal compliance that absorbs impacts.

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