Abstract:
Color/optical characteristics measuring systems and methods are disclosed. Perimeter receiver fiber optics/elements (7) are spaced apart from a central source fiber optic/element (5) and received light reflected from the surface of the object (20) is measured. Light from the perimeter fiber optics (7) pass to a variety of filters. The system utilizes the perimeter receiver fiber optics (7) to determine information regarding the height and angle of the probe (1) with respect to the object (20) being measured. Under processor control (20), the color measurement may be made at a predetermined height and angle. Various color spectral photometer arrangements are disclosed. Translucency, fluorescence, and/or surface texture data also may be obtained. Audio feedback may be provided to guide operator use of the system. The probe (1) may have a removable or shielded tip for contamination prevention.
Abstract:
A device (100) for determining the surface topology and associated colour of a structure (26), such as a teeth segment, includes a scanner (100,1525) for providing depth data for points along a two-dimensional array substantially orthogonal to the depth direction, and an image acquisition means (68) for providing colour data for each of the points of the array, while the spatial disposition of the device with respect to the structure is maintained substantially unchanged. A processor (24) combines the colour data and depth data for each point in the array, thereby providing a three-dimensional colour virtual model of the surface of the structure. A corresponding method for determining the surface topology and associated colour of a structure is also provided.
Abstract:
A miniaturized spectrometer/spectrophotometer system and methods are disclosed. A probe tip including one or more light sources and a plurality of light receivers is provided. A first spectrometer system receives light from a first set of the plurality of light receivers. A second spectrometer system receives light from a second set of the plurality of light receivers. A processor, wherein the processor receives data generated by the first spectrometer system and the second spectrometer system, wherein an optical measurement of a sample under test is produced based on the data generated by the first and second spectrometer systems.
Abstract:
A system for, and method of, colour matching and/or identifying colour parameters of articles such as teeth, textiles, paints, dyes, car body repairs, picture restoration, metals and gems and for use in the cosmetics industry. The system comprises means for taking a coloured image of an object, means for relaying the coloured image to a place remote from where the image of the object was taken, means for analysing colour values of the image and means for converting the colour values into parameters from which the original colour of the object can be reconstituted or colour parameters may be cross-referenced and/or recorded over time.
Abstract:
Die Erfindung bezieht sich auf ein Zahnfarbsystem umfassend Grund- und Mischfarben, denen Koordinaten im CIELab-Farbraum zugeordnet sind, in dem die Farben der natürlichen Zähne im Wesentlichen auf Koordinaten innerhalb eines ellipsoidförmigen Raumes (18) liegen, dem eine Längsachse (22) zugeordnet ist. Damit das Farbsystem aus einer geringen Anzahl von Grund- und Mischfarben besteht und eine optimale Farbanpassung an die den Zahnersatz umgebenden natürlichen Zähnen ermöglicht, wird vorgeschlagen, dass die Grundfarben aus ersten Grundfarben und zumindest einer Gruppe zweiter Grundfarben bestehen, dass die Koordinaten der ersten Grundfarben auf der Längsachse (22) des ellipsoidförmigen Raumes oder einer von hell nach dunkel im CIELab-Raum verlaufenden Basislinie liegen, dass die Koordinaten zumindest einer Gruppe von zweiten Grundfarben in einer die Längsachse oder Basislinie senkrecht schneidenden Ebene (52) liegen und dass die Koordinaten der Mischfarben Schnittpunkte (74,76) von ersten und zweiten Geraden sind, wobei zumindest eine erste Gerade (56,58) parallel zu der Längsachse oder Basislinie verläuft und jeweilige zweite Gerade (60,62,64,66,68,70,72) eine Verbindung zwischen den Koordinaten einer der ersten Grundfarben und einer der zweiten Grundfarbe ist.
Abstract:
A patient's dental prosthesis (e.g., a prosthesis tooth, crown, veneer, or bridge) is made by acquiring an image (42) of the patient's teeth that contains black (54) and white (58) normalization references. These references are black, and white porcelain, for example, that allow software of the invention to determine absolute black and absolute white within the image. The image is then normalized in accordance with normalization references, which corrects the image for variations in lighting conditions and image source. The normalized image (60) is then standardized by matching the pixels of the normalized image (60) to selected shade standards (62). The dental prosthesis can then be manufactured by a lab technician by referring to the standardized image (66). The tooth shade analysis, and matching system is also applicable to direct restorations of natural teeth, such as repair of chipped or broken teeth.
Abstract:
A device for determining the surface topology and associated colour of a structure, such as a teeth segment, includes a scanner for providing depth data for points along a two-dimensional array substantially orthogonal to the depth direction, and an image acquisition means for providing colour data for each of the points of the array, while the spatial disposition of the device with respect to the structure is maintained substantially unchanged. A processor combines the colour data and depth data for each point in the array, thereby providing a three-dimensional colour virtual model of the surface of the structure. A corresponding method for determining the surface topology and associated colour of a structure is also provided.
Abstract:
A device for determining the surface topology and associated colour of a structure, such as a teeth segment, includes a scanner for providing depth data for points along a two-dimensional array substantially orthogonal to the depth direction, and an image acquisition means for providing colour data for each of the points of the array, while the spatial disposition of the device with respect to the structure is maintained substantially unchanged. A processor combines the colour data and depth data for each point in the array, thereby providing a three-dimensional colour virtual model of the surface of the structure. A corresponding method for determining the surface topology and associated colour of a structure is also provided.
Abstract:
A method for providing data useful in procedures associated with the oral cavity, in which at least one numerical entity representative of the three-dimensional surface geometry and colour of at least part of the intra-oral cavity is provided and then manipulated to provide desired data therefrom.
Abstract:
Es ist eine Lichtanalyse mit einer ersten Lichtquelle (12) für die Beaufschlagung einer Zahnoberfläche (14) mit einem ersten Licht vorgesehen. Eine zweite Lichtquelle (16) beaufschlagt die Zahnoberfläche (14) mit einem zweiten Licht, das vorzugsweise entlang einer ersten Achse polarisiert ist. Ein Lichtsammelelement (18) für die Aufnahme des von der Zahnoberfläche (14) reflektierten ersten und zweiten Lichts weist eine Aufnahmevorrichtung auf, die ein dem reflektierten Licht entsprechendes Bild erfasst und erzeugt. Das Lichtsammelelement (18) weist vorzugsweise ein Polarisationsfilter (30) auf, das das reflektierte Licht entlang einer zweiten Achse in einem Winkel zu der ersten Achse polarisiert, um ein Blenden und Reflexionen zu vermeiden.