Abstract: The invention relates to structures of a dental care unit used in dental care work. In the invention, a frame part of the dental care unit comprises a means to attach a vertically extending support part, and a cover structure (22) of the frame part comprises at least a first and a second cover part (22?, 22?). The support part extends vertically essentially from an area of a seam locus (23) between the cover parts, whereto is arranged a seam element (24). The seam element (24) is preferably arranged to emit light as controlled by a control system of the dental care unit. A dental care unit like this is specifically applicable for use in a dental care room or premises comprising several dental care units.

Abstract: The invention relates to a dental care unit (1) comprising a frame part (2), a support construction (5, 7) for supporting instruments related to dental care (6) and, on the other hand, an operating light (8) arranged to be used in connection with dental care, which operating light (8) is arranged to produce a desired light pattern at a desired distance from the operating light (8). A camera arrangement is arranged to this operating light (8) which comprises at a distance from each other two optical cameras (85), which are integrated as to be both structural and functional part of the operating light (8) of the dental care unit (1).

Abstract: The invention relates to an intra-oral x-ray imaging arrangement which includes as separate structures, first, a radiation source (4) having a collimator structure (4?, 40) limiting an x-ray beam for producing the beam used in imaging and for aiming it to the object to be imaged, secondly, an imaging sensor (30) arranged positionable within a patient's mouth (30), and a control system of the imaging arrangement. The collimator structure (4?, 40) is implemented as a structure (40) which enables adjusting a collimator opening limited by the collimator for at least one of the following: its size, its shape, its location, its position.

Abstract: The invention relates to an intra-oral x-ray imaging arrangement which includes an imaging sensor (30) arranged positionable within a patient's mouth and a control system of the imaging arrangement. The control system is arranged in functional connection with a means that has been arranged to send measurement signals to the control system informing on position of at least one component included in the arrangement. In connection with the imaging sensor (30), and a radiation source (4) included in the arrangement, means (A, M, G) have been arranged to measure their spatial position and to send measurement signals based on these measurements to the control system arranged with a means to determine, based on said measurement signals, information on mutual spatial position of the imaging sensor (30) and the radiation source (4), or of a component (40, 50) arranged to the radiation source (4).

Abstract: The invention relates to a dental imaging apparatus which includes an x-ray imaging means and at least one color camera for photographing the face of a patient positioned at the imaging station of the apparatus, which at least one color camera is arranged to image the patient's face positioned at the patient support station from different directions, and means arranged into functional connection with said at least one color camera for creating a virtual three-dimensional texture model of the patient's face.

Abstract: The invention relates to a dental computed tomography apparatus which includes an x-ray imaging means and at least one color camera for photographing the face of a patient positioned at the imaging station of the apparatus from different directions and at least one laser or a corresponding lighting arrangement, which is fitted to direct a light pattern at different locations on the face of a patient positioned at the imaging station, and a means arranged into functional connection with said at least one color camera for creating a virtual three-dimensional surface model from the light-pattern information directed at different locations on the face of the patient positioned at the imaging station, and a means for combining said face image information detected by said at least color camera to said surface model of the patient's face to create a virtual three-dimensional texture model of the patient's face.

Abstract: The invention relates to an intra-oral x-ray imaging arrangement which includes an imaging sensor (30) arranged positionable within a patient's mouth and a control system of the imaging arrangement. The control system is arranged in functional connection with a means that has been arranged to send measurement signals to the control system informing on position of at least one component included in the arrangement. In connection with the imaging sensor (30), and a radiation source (4) included in the arrangement, means (A, M, G) have been arranged to measure their spatial position and to send measurement signals based on these measurements to the control system arranged with a means to determine, based on said measurement signals, information on mutual spatial position of the imaging sensor (30) and the radiation source (4), or of a component (40, 50) arranged to the radiation source (4).

Abstract: The invention relates to an intra-oral x-ray imaging arrangement which includes as separate structures, first, a radiation source (4) having a collimator structure (4?, 40) limiting an x-ray beam for producing the beam used in imaging and for aiming it to the object to be imaged, secondly, an imaging sensor (30) arranged positionable within a patient's mouth (30), and a control system of the imaging arrangement. The collimator structure (4?, 40) is implemented as a structure (40) which enables adjusting a collimator opening limited by the collimator for at least one of the following: its size, its shape, its location, its position.

Abstract: The invention relates to a dental imaging apparatus which includes an x-ray imaging means and at least one colour camera for photographing the face of a patient positioned at the imaging station of the apparatus, which at least one colour camera is arranged to image the patient's face positioned at the patient support station from different directions, and means arranged into functional connection with said at least one colour camera for creating a virtual three-dimensional texture model of the patient's face.

Abstract: The invention relates to a dental computed tomography apparatus which includes an x-ray imaging means and at least one colour camera for photographing the face of a patient positioned at the imaging station of the apparatus from different directions and at least one laser or a corresponding lighting arrangement, which is fitted to direct a light pattern at different locations on the face of a patient positioned at the imaging station, and a means arranged into functional connection with said at least one colour camera for creating a virtual three-dimensional surface model from the light-pattern information directed at different locations on the face of the patient positioned at the imaging station, and a means for combining said face image information detected by said at least colour camera to said surface model of the patient's face to create a virtual three-dimensional texture model of the patient's face.

Abstract: A read-out arrangement for reading a CCD-sensor (1-1), detector (1-2) which has an active area including pixels that receives charges and a read-out register (1-4) in functional connection with the active area. Charges are transferred from the active area into a read-out register (1-4) and to at least one read-out well (106, 108) arranged in connection with at least output (1-4a1-4b) of the read-out register (1-4). The dynamics of the CCD-sensor can be changed by changing binning of the charges at least partly in response to a control signal.

Abstract: This invention relates to x-ray imaging, especially to an imaging arrangement used in intra-oral x-ray imaging, to a wireless imaging sensor and to a base station for the sensor as well as to methods for supplying operating power to the sensor and transmitting information to the sensor and from the sensor wirelessly, in which invention such a wireless power transmission link is used, which is arranged to be used for supplying energy to the sensor in connection with the imaging process.

Abstract: This invention relates to x-ray imaging, especially to an imaging arrangement used in intra-oral x-ray imaging, to a wireless imaging sensor and to a base station for the sensor as well as methods for using the sensor and transmitting the information to the sensor and from the sensor wirelessly, in which invention such a wireless power transmission link is used, which is arranged to be used for supplying at least part of the energy needed by the sensor in connection with the imaging process.

Abstract: The invention concerns an x-ray imaging sensor and an x-ray imaging method in which, in a scintillator element (11, 21) or in an element having a corresponding functionality, x-ray quanta are converted into photons having a wavelength substantially greater than the wavelength range of the x-ray quanta. The information detected in the scintillator element (11, 12) is converted to pixel-specific electric signals in a semiconductor element (13, 23), which includes photodiodes (15, 25, 35) or corresponding means that are arranged to divide at least part of the area of the sensor to pixels (14, 24, 34). Arranged in functional connection with the pixel-specific photodiodes (25, 35) or corresponding means, there has been arranged means comprising an I/F (current to frequency) converter (26, 36) or a corresponding component for quantizing the electric signals by converting them to pixel-specific frequencies, i.e. pulse trains.

Abstract: The invention concerns an x-ray imaging sensor and an x-ray imaging method in which, in a scintillator element (11, 21) or in an element having a corresponding functionality, x-ray quanta are converted into photons having a wavelength substantially greater than the wavelength range of the x-ray quanta. The information detected in the scintillator element (11, 12) is converted to pixel-specific electric signals in a semiconductor element (13, 23), which includes photodiodes (15, 25, 35) or corresponding means that are arranged to divide at least part of the area of the sensor to pixels (14, 24, 34). Arranged in functional connection with the pixel-specific photodiodes (25, 35) or corresponding means, there has been arranged means comprising an I/F (current to frequency) converter (26, 36) or a corresponding component for quantizing the electric signals by converting them to pixel-specific frequencies, i.e. pulse trains.

Abstract: This invention relates to mutual positioning of an x-ray beam and an intra-oral x-ray sensor in connection with an imaging process by utilizing at least one measurement signal, which is achieved by arranging means for producing a magnetic field resp. for measuring the magnetic field in connection with a radiation source resp. the sensor.

Abstract: A LED operation light, comprising at least two power sources, at least one of which is an adjustable power source, at least two LED units, and measuring and control means. The LED units, which comprise one or more LED components, emit light in response to power received from the power source. The LED components have been arranged to produce emission of light color components of at least two different wavelengths. The measuring means have been arranged to measure light emission of the LED unit and, based on measurement data, to generate control information to be sent to the adjustable power source to adjust the magnitude of power to be supplied to the LED unit. The light emission of the LED component changes as the received power changes, which again results in a change in the correlation between the emitted light color components, and therefore in the color temperature.

Abstract: The invention relates to a method and an arrangement for controlling the movements of the functional elements (13-16) of an X-ray apparatus, such as a panoramic X-ray apparatus. In the method, one or more power means (1) provided with a control system (21), a power stage (11) and a rotating power output shaft (2) is/are controlled so as to produce the aforesaid movements of the functional elements. The power output shaft (2) of the power means is caused to rotate by the control system and the power stage so that the power output shaft is in direct contact with the force receiving means (3, 3a) of the functional element.

Abstract: A CCD sensor arrangement comprises a CCD sensor, which comprises a detector having an active area comprising pixels that receive charges; a read-out register functionally connected with the aforesaid active area; means for transferring charges from the active area to the read-out register; at least two read-out wells functionally connected with the read-out register, said at least two read-out wells having different capacities; means for transferring charges from the read-out register to the at least two read-out wells; means arranged in the sensor or in functional connection with the sensor for measuring the signal generated by the charges read out or being read out from said wells; and selection means for deciding during read-out of charges from said active area of the sensor, at least partly on the basis of the aforesaid measured signal, whether the read-out well to be used is to be changed.

Abstract: This invention relates to mutual positioning of an x-ray beam and an intra-oral x-ray sensor in connection with an imaging process by utilizing at least one measurement signal, which is achieved by arranging means for producing a magnetic field resp. for measuring the magnetic field in connection with a radiation source resp. the sensor.