Abstract: An actuator includes a magnet, a driving coil facing the magnet, a driver, and a position calculation processor. The driver is configured to move the magnet in at least one of an optical axis direction and a direction perpendicular to the optical axis by applying a driving signal to the driving coil. The position calculation processor includes sensing coils, and is configured to calculate a position of the magnet according to inductance levels of an inductor of the sensing coils. The inductance levels vary according to movements of the magnet.

Abstract: A dual camera module includes a single housing accommodating a plurality of lens modules, a first actuator configured to move one of the plurality of lens modules in an optical axis direction, and a plurality of printed circuit boards attached to a lower portion of the single housing. One printed circuit board corresponding to a lens module moved by the first actuator, among the plurality of printed circuit boards, is disposed to be lower than the other printed circuit boards in the optical axis direction.

Abstract: A camera module includes a carrier configured to move in an optical axis direction, a frame and a lens holder disposed in the carrier in the optical axis direction and configured to move together with the carrier in the optical axis direction, a first ball member disposed between the carrier and the frame, a second ball member disposed between the frame and the lens holder, and a third ball member disposed between the carrier and the lens holder. The frame and the lens holder are configured to move together in a first axis direction perpendicular to the optical axis direction. The lens holder is configured to move relatively with respect to the frame in a second axis direction perpendicular to the first axis direction, and the third ball member has more contact points with the carrier than the first ball member.

Abstract: A dual camera module includes a single housing accommodating a plurality of lens modules, a first actuator configured to move one of the plurality of lens modules in an optical axis direction, and a plurality of printed circuit boards attached to a lower portion of the single housing. One printed circuit board corresponding to a lens module moved by the first actuator, among the plurality of printed circuit boards, is disposed to be lower than the other printed circuit boards in the optical axis direction.

Abstract: A camera module includes a carrier configured to move in an optical axis direction, a frame and a lens holder disposed in the carrier in the optical axis direction and configured to move together with the carrier in the optical axis direction, a first ball member disposed between the carrier and the frame, a second ball member disposed between the frame and the lens holder, and a third ball member disposed between the carrier and the lens holder. The frame and the lens holder are configured to move together in a first axis direction perpendicular to the optical axis direction. The lens holder is configured to move relatively with respect to the frame in a second axis direction perpendicular to the first axis direction, and the third ball member has more contact points with the carrier than the first ball member.

Abstract: An actuator of a camera module includes: a detection target; and a position detecting unit disposed to face the detection target and including at least two sensing coils respectively forming at least two oscillation circuits, wherein the position detecting unit detects a position of the detection target depending on at least two oscillation signals generated by the at least two oscillation circuits and having different frequency ranges.

Abstract: An actuator of a camera module includes: a detection target; and a position detecting unit disposed to face the detection target and including at least two sensing coils respectively forming at least two oscillation circuits, wherein the position detecting unit detects a position of the detection target depending on at least two oscillation signals generated by the at least two oscillation circuits and having different frequency ranges.

Abstract: An actuator includes a magnet, a driving coil facing the magnet, a driver, and a position calculation processor. The driver is configured to move the magnet in at least one of an optical axis direction and a direction perpendicular to the optical axis by applying a driving signal to the driving coil. The position calculation processor includes sensing coils, and is configured to calculate a position of the magnet according to inductance levels of an inductor of the sensing coils. The inductance levels vary according to movements of the magnet.

Abstract: A lens module includes a lens barrel comprising a hollow portion; a first lens comprising a lens coupling groove formed in one surface thereof, and an outer peripheral surface contacting an inner peripheral surface of the lens barrel; and a second lens comprising a protrusion portion corresponding to the lens coupling groove, wherein the second lens is stacked on the one surface of the first lens and the protrusion portion inserted into the lens coupling groove.

Abstract: Fluorene derivatives are described including those having optical properties which can make them suitable for use in optical systems such as cameras. Various derivatives can have high polarity, small molecular volume, low glass transition temperature, high transparency and/or excellent optical characteristics. In addition, a process for making the fluorene derivatives and products made from the fluorene derivatives are described.

Abstract: Embodiments of the invention provide a camera module including a lens barrel part in which a plurality of lenses are stacked, a housing having the lens barrel part disposed therein, and an infrared (IR)-cut filter provided in the housing and disposed at a lower portion of the lens barrel part. According to at least one embodiment, the camera module further includes a circuit board having a window formed therein so as to penetrate through a central region thereof and supporting a bottom surface of the housing; an image sensor accommodated in the window of the circuit board and converting an external image into an electrical signal, and a plate coupled to a lower portion of the circuit board to radiate heat generated from the circuit board.

Abstract: Embodiments of the invention provide a camera module including a lens barrel part in which a plurality of lenses are stacked, a housing having the lens barrel part disposed therein, and an infrared (IR)-cut filter provided in the housing and disposed at a lower portion of the lens barrel part. According to at least one embodiment, the camera module further includes a circuit board having a window formed therein so as to penetrate through a central region thereof and supporting a bottom surface of the housing; an image sensor accommodated in the window of the circuit board and converting an external image into an electrical signal, and a plate coupled to a lower portion of the circuit board to radiate heat generated from the circuit board.

Abstract: Disclosed herein are fluorene derivatives and a lens using the same.

Abstract: A lens module includes a housing; a lens barrel mounted in the housing; and an actuator unit including an actuator to move the lens barrel. The actuator unit has a coupling area on one end for coupling to the housing, and an adjustment portion on another end for adjusting a tilt of the lens barrel formed.

Abstract: A camera module is disclosed. A camera module in accordance with an embodiment of the present invention includes: a housing; a lens barrel arranged inside the housing; an infrared filter fixed to one side of the lens barrel and having a window layer coated thereon so as to form a window area; an image sensor arranged beneath the infrared filter so as to correspond to the window area; and a printed circuit board having the image sensor mounted thereon.

Abstract: Disclosed herein is a camera module including: a lens barrel part in which a plurality of lenses are stacked; a housing enclosing an outer peripheral surface of the lens barrel part; an infrared (IR)-cut filter mounted at a lower portion of the housing to remove a near infrared wavelength; an image sensor mounted on a lower portion of the IR-cut filter to convert an external image into an electrical signal; a circuit board having an opening part formed at the center thereof, the opening part receiving the image sensor therein; and a plate mounted on the circuit board and made of a thermal conductive material so as to radiate heat generated from the circuit board.

Abstract: A camera module package. A housing is provided with a lens barrel having at least one lens contained therein. At least one IR filter is also provided in the housing. A board, which is assembled to the housing, has at least one reinforcement material stacked thereon and at least one passive device mounted thereon. An image sensor is assembled to a lower surface of the board with its image region exposed through a window of the board. The present invention prevents contamination by an adhesive spreading over outer periphery of the board during flip-chip bonding of the board and the sensor, increases the rigidity of the board to prevent damage to the board during the assembly into the housing, and promotes miniaturization of the module.

Abstract: A camera module package. A housing is provided with a lens barrel having at least one lens contained therein. At least one IR filter is also provided in the housing. A board, which is assembled to the housing, has at least one reinforcement material stacked thereon and at least one passive device mounted thereon. An image sensor is assembled to a lower surface of the board with its image region exposed through a window of the board. The present invention prevents contamination by an adhesive spreading over outer periphery of the board during flip-chip bonding of the board and the sensor, increases the rigidity of the board to prevent damage to the board during the assembly into the housing, and promotes miniaturization of the module.

Abstract: The digital dynamic convergence error control system for controlling convergence errors is provided.

Abstract: The invention and method enable the astigmatism correction at each crossing point of a cross hatch pattern, thereby making high-resolution display possible. An appropriate voltage or current for controlling the magnetic field adjusting coils are generated from the correction data stored in a memory. The voltage or current generated are then applied to two poles, four poles or six poles during scanning of the screen.