Patent number 8605213 is assigned to
The following quote was obtained by the news editors from the background information supplied by the inventors: "The teachings in accordance with the exemplary embodiments of this present disclosure generally relate to a camera module, and more particularly to a camera module equipped with an optical image stabilizing function capable of providing an auto-focusing function and a shake compensating function as well.
"Generally, a digital camera module, instead of a photosensitive film, uses an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) to photograph a digital image or a moving picture.
"A camera module with an image sensor is used on wide fields such as a mobile device capable of photographing a photograph, a monitoring camera and a surveillance camera mounted on a vehicle due to advantages of less volume and excellent physical performance. Particularly, the trend is that a camera module used for a mobile device is gradually miniaturized, multi-functional and light-weighted.
"Recently, a camera module used for a mobile device is basically mounted with an auto focusing function or an optical image stabilizing function. Meantime, devices forming a camera module must cater to demands for miniaturization in response to miniaturization of lenses and improvement of optical performances.
"A driving apparatus such as a voice coil motor is used to accomplish the auto focusing function, where the voice coil motor performs the auto focusing function by vertically moving a lens or a sensor in a predetermined space. Furthermore, a device is mounted to vibrate or move the lens or the sensor in a predetermined direction to stabilize an optical image, where a device such as a step motor or a voice coil motor is additionally arranged.
"However, mounting of additional driving elements for compensating the vibration or movement or inhibiting shaking may disadvantageously increase volume of the camera module, complicate a manufacturing process and reduce a manufacturing efficiency."
In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventor's summary information for this patent: "The present disclosure has been made to solve the foregoing problems of the prior art and therefore an object of certain embodiments of the present disclosure is to provide a camera module configured with a driving unit comprised of one set to simultaneously perform an auto focusing function and a stabilization function.
"Technical subjects to be solved by the present disclosure are not restricted to the above-mentioned description, and any other technical problems not mentioned so far will be clearly appreciated from the following description by the skilled in the art. That is, the present disclosure will be understood more easily and other objects, characteristics, details and advantages thereof will become more apparent in the course of the following explanatory description, which is given, without intending to imply any limitation of the disclosure, with reference to the attached drawings.
"Therefore, an object of the present disclosure is to solve at least one or more of the above problems and/or disadvantages in whole or in part and to provide at least advantages described hereinafter. In order to achieve at least the above objects, in whole or in part, and in accordance with the purposes of the invention, as embodied and broadly described, and in one general aspect of the present invention, there is provided a camera module, the camera module comprising: a fixture for being coupled with an image sensor; a moving part centrally coupled with a lens and arranged to move relative to the fixture; a plurality of magnets arranged at a periphery of the moving part; and coils arranged at the fixture and positioned at areas opposite to the plurality of magnets.
"Preferably, the coil includes first and third coils arranged on a y axis, and second and fourth coils arranged on an x axis.
"Preferably, each of the coils takes a shape of a track, and is lengthily and horizontally formed inside the fixture.
"Preferably, each of the magnets is formed with an opposite polarity at an upper surface and a bottom surface.
"Preferably, the camera module further comprises a spring including an upper spring supporting an upper distal end of the moving part, and a bottom spring supporting a bottom distal end of the moving part.
"Preferably, each of the upper and bottom distal ends is formed with a single-plated elastic material, and independently operates to the x and y axes relative to the moving part to provide a mutually identical elasticity.
"Preferably, the fixture includes a housing supporting the coils and accommodating the moving part at an inner space, and a base coupled with an image sensor and a PCB (Printed Circuit Board) and coupled to a bottom surface of the housing, where the housing includes terminal units connected from an area arranged with the coils to the PCB.
"Preferably, each terminal unit is integrally formed with the housing by an insert injection molding method.
"Preferably, the housing further includes a groove-shaped connector arranged with a tail of the coil, where an inner space of the connector is exposed with a part of the terminal unit to be connected to the tail of the coil.
"Preferably, the base includes a hole-shaped terminal insertion hole through which the terminal unit passes.
"Preferably, a bottom distal end of the moving part is discretely arranged from a bottom surface of the fixture at a base position where a control signal is not inputted to the coil.
"Preferably, a height-directed center of the magnet is situated at a position lower than that of a height-directed center of the coil.
"Preferably, the fixture further includes a buffer member so arranged as to be situated adjacent to a bottom distal end side of the moving part.
"Preferably, the fixture opposite to each of the magnet is formed with a through hole receiving the coil.
"Preferably, the camera module includes at least three or more magnets and coils.
"In another general aspect of the present invention, there is provided a camera module including a PCB (Printed Circuit Board), an image sensor and a lens, the camera module comprising: a fixture including a housing having a receiving space; a moving part arranged inside the housing, coupled with a lens thereinside and moving relative to the housing; a plurality of coils coupled to the housing, each spaced apart at an equal distance; and a plurality of magnets coupled to a periphery of the moving part to face each of the coils, wherein each coil is individually applied with a driving signal from the PCB so that the moving part moves to a height direction to be tilted relative to a central axis of the moving part.
"Preferably, the camera module further comprises: an upper spring elastically supporting an upper distal end of the moving part relative to the housing; a bottom spring elastically supporting a bottom distal end of the moving part relative to the housing, wherein each of the upper and bottom springs independently provides elasticity to the moving part from four areas of length and breadth directions.
"Preferably, each of the upper and bottom springs takes a single-plated shape.
"Preferably, a bottom distal end of the moving part is discretely arranged from a bottom surface of the fixture at a base position where the driving signal is not inputted to the coil.
"Preferably, the fixture includes a base coupled with the image sensor and the PCB (Printed Circuit Board) and coupled to a bottom surface of the housing, where the housing includes terminal units connected from an area arranged with the coils to the PCB.
"The camera module according to the present disclosure has an advantageous effect in that the camera module includes a fixture; a moving part centrally coupled with a lens and arranged to move relative to the fixture; three or more magnets arranged at a periphery of the moving part; and three or more coils arranged from an inner surface of the fixture to areas opposite to the three or more magnets, where each of the coils independently receives a control signal so that the moving part moves to a height direction and tilted relative to a central axis of the moving part, whereby a lens can be axially moved and tilted at the same time using arrangement of a single set of coils and magnets."
URL and more information on this patent, see: Park, Sangok. Camera Module. U.S. Patent Number 8605213, filed
Keywords for this news article include: Electronics, Circuit Board,
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC
Most Popular Stories
- Chinese May Have Spotted Malaysia Airlines Debris
- Why Buffett Bets Big on Green Energy
- 3 Shot Dead in Venezuela Unrest
- Banks Buying Little From Minority Firms: Study
- Better Pay Means Bigger Profits: Strategist
- Several Texas Cities Top Job Search List
- Senate Committee OKs Bill to Sanction Russia
- Wall Street Rally Heads Off 3rd Day of Decline
- G7 Presses Russia to Pull Troops Out of Crimea
- Obama's 'Between Two Ferns' Appearance Has Conservatives Upset