An image reading apparatus includes a placement board, a camera that captures an image of a subject placed on the placement board, a first holding member to which the camera is fixed, a second holding member that is fixed to the placement board, and a fixing portion that fixes the first holding member to the second holding member, wherein a sliding surface along a spherical surface is formed on one of the first holding member and the second holding member, three contact points disposed at three different positions respectively are formed on the other one of the first holding member and the second holding member, the first holding member is rotatably supported about three axes by the second holding member as a result of the three contact points coming into contact with the sliding surface, and the camera is disposed inside the spherical surface.

Optical center calibration may include obtaining one or more parameters for optical center calibration, obtaining an input image captured by an image capture device using a lens, and determining a calibration circle using the parameters and the input image. Determining the calibration circle may include extracting rays using the input image, estimating contours using the input image and the rays, and estimating the calibration circle using the input image and the contours. The calibration may be iteratively improved by repeating calibration based on the input image and a previous iteration of optical center calibration.

A camera module comprises: a first camera module; and a second camera module including a second side that faces a first side of the first camera module, wherein the first camera module comprises: a housing; a bobbin disposed inside the housing; a coil disposed on the outer circumferential surface of the bobbin; and two magnets, facing each other, that are arranged at the sides of the housing in the direction perpendicular to the first side of the first camera module, so as to face the coil, wherein each of the two magnets comprises: an upper surface; a lower surface; an inner surface facing the coil; an outer surface disposed on the reverse side to the inner surface; and two side surfaces connecting the inner surface and the outer surface, wherein a depressed part is provided on the side surface of the magnet, among the two side surfaces of the magnet, that is disposed on the first side of the first camera module, the depressed part being formed by recessing a portion of the side surface of the magnet, and the area of the inner surface of the magnet is smaller than the area of the outer surface of the magnet.

A camera assembly embedded in an electronic device may include a plurality of camera modules, and a supporting frame configured to support the plurality of camera modules. At least one of the plurality of camera modules includes a lens driving assembly configured to move a lens barrel, a lens housing configured to accommodate the lens barrel and the lens driving assembly, a first circuit board on which an image sensor is provided, and a conductive connecting part configured to electrically connect the first circuit board and the lens driving assembly. The supporting frame includes a metal body configured to surround at least portions of edges of the lens housing, and a short-circuit prevention part provided on a surface of the metal body facing the conductive connecting part. The short-circuit prevention part includes a non-conductive material to block electrical contact between the metal body and the conductive connecting part.

An interchangeable lens apparatus attachable to an imaging apparatus configured to move an image sensor in an image stabilization includes an imaging optical system, a storage unit configured to store image circle information including a relationship between an imaging condition and position information of an image circle of the imaging optical system, and a transmission unit configured to transmit at least part of the image circle information to the imaging apparatus.

A position detection device includes a magnetic field generator and a magnetic sensor. The magnetic field generator is configured so that a mode of variation of a direction of a target magnetic field relative to variations in a position of a lens is such that the direction of the target magnetic field varies nonlinearly relative to the variations in the position of the lens. The magnetic sensor is configured so that a mode of variation of a detection signal relative to variations in the direction of the target magnetic field is such that the detection signal varies nonlinearly relative to the variations in the direction of the target magnetic field.

The present disclosure generally relates to user interfaces. In some examples, the electronic device transitions between user interfaces for capturing photos based on data received from a first camera and a second camera. In some examples, the electronic device provides enhanced zooming capabilities that result in visual pleasing results for a displayed digital viewfinder and for captured videos. In some examples, the electronic device provides user interfaces for transitioning a digital viewfinder between a first camera with an applied digital zoom to a second camera with no digital zoom. In some examples, the electronic device prepares to capture media at various magnification levels. In some examples, the electronic device enhanced capabilities for navigating through a plurality of values.

There is provided an image processing apparatus capable of making an optical characteristic correction corresponding to a shift in the position of an optical axis by a tilt operation. The image processing apparatus performs the optical characteristic correction, in accordance with correction data including a value corresponding to an image height with reference to a correction center position. The image processing apparatus changes the correction center position in image data according to a tilt operation of the tilt mechanism.

A camera assembly embedded in an electronic device may include a plurality of camera modules, and a supporting frame configured to support the plurality of camera modules. At least one of the plurality of camera modules includes a lens driving assembly configured to move a lens barrel, a lens housing configured to accommodate the lens barrel and the lens driving assembly, a first circuit board on which an image sensor is provided, and a conductive connecting part configured to electrically connect the first circuit board and the lens driving assembly. The supporting frame includes a metal body configured to surround at least portions of edges of the lens housing, and a short-circuit prevention part provided on a surface of the metal body facing the conductive connecting part. The short-circuit prevention part includes a non-conductive material to block electrical contact between the metal body and the conductive connecting part.

Optics systems presented are arranged as high-performance imagers particularly characterized by their exceptional compactness in view of image quality. A plurality of lens and let's and or doublets are configured to cooperate with related mount systems optimized for compactness. To achieve very high resolution imaging despite somewhat abbreviated compound lens design, these systems include use of lens array elements proximate to an imaging plane. So placed lens array devices may be designed with lens elements which invariably operate on incident wave planes with radial dependence. That is, the focusing strength of lenses from which these lens arrays are comprised may depend upon its distance from system optic axis. This enables an imaging correction function that counters distortion and other undesirable imaging errors typically present in a simplified compound lens systems. When used together and in conjunction with special-purpose collapsing lens mounting systems, an imaging system of very high fidelity and very compact weight size is achieved to great advantage in system when a premium on lens size is necessitated.