Abstract: A zoom lens system, in order from an object side to an image side, comprising: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power; a fourth lens unit having negative optical power, a fifth lens unit having negative optical power; and a sixth lens unit having positive optical power, wherein the condition: 3.5<|f6/f2|<15.5 (f2: a focal length of the second lens unit, f6: a focal length of the sixth lens unit) is satisfied.

Abstract: A single focal length lens system includes in order from an object side to an image side along an optical axis, a front lens unit, and a rear lens unit which includes an aperture stop. The single focal length lens system does not include any other lens unit on the optical axis, and the rear lens unit includes a focusing lens unit having a negative refractive power. The focusing lens unit is disposed on the image side of the aperture stop, and moves along the optical axis at the time of focusing from an object at infinity to an object at a close distance. The front lens unit does not include a lens which moves in an optical axial direction, and the rear lens unit does not include a lens which moves in the optical axial direction except at the time of focusing.

Abstract: A zoom lens consists of, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, one or two middle lens groups including a mp lens group having a positive refractive power, and a rearmost lens group disposed at the most image side position of the entire system and having a positive refractive power, wherein magnification change is effected by changing all distances between the adjacent lens groups, and focusing from an object at infinity to a closest object is effected by moving only the entire mp lens group or only a part of lens groups forming the mp lens group along the optical axis, the lens group moved during focusing includes a positive lens and a negative lens and has a positive refractive power as a whole, and given condition expressions are satisfied.

Abstract: Disclosed herein is camera module including: a lens barrel; an auto-focusing actuator; and a handshake compensating actuator, wherein the auto-focusing actuator and the handshake compensating actuator include a common magnet for actuating auto-focusing and handshake compensation, an auto-focusing corner magnet, a coil for auto-focusing, and a coil for handshake compensation, one surface of the common magnet for actuating auto-focusing and handshake compensation and the auto-focusing corner magnet face the coil for auto-focusing and the other surface of the common magnet for actuating auto-focusing and handshake compensation faces the coil for handshake compensation.

Abstract: A projection lens provided is for projecting an image beam. The projection lens is disposed on a transmission path of the image beam and includes a first group of lenses and a second group of lenses. The first group of lenses includes a first spherical lens and a first aspheric lens. After the image beam passes through the first group of lenses, an intermediate image is formed between the first group of lenses and the second group of lenses, in which the first aspheric lens is the lens in the first group of lenses closest to the second group of lenses. A projection device using the projection lens is also provided. The projection device further includes a planar reflector on the transmission path of the image beam.

Abstract: A zoom lens and a photographing apparatus including the same. The zoom lens includes, in an order from an object side: a first lens group having negative refractive power; a second lens group having positive refractive power; a third lens group having positive refractive power; and a fourth lens group having an iris on a side of the fourth lens group closest to the object side and positive refractive power, wherein, while zooming from a wide angle position to a telephoto position, the first through fourth lens groups are moved such that the interval between the first and second lens groups increases, the interval between the second and third lens groups decreases, and the interval between the third and fourth lens groups decreases, and focusing is performed by moving the third lens group.

Abstract: The present invention provides a lens driving device having a component for limiting a movement amount generated during impacting, wherein an impact force is alleviated by utilizing the component for limiting the movement amount, so that a driving coil can be prevented from falling off, and the damage to the leaf springs can be alleviated. The leaf springs formed into a cantilever beam structure as the damper for alleviating the impact in the vertical direction and the planar direction are arranged between the lower fixing body and the upper fixing body, and the impact force can be alleviated by utilizing first projection parts and second projection parts projected out from the lens support, and the existing structure does not need to be greatly changed.

Abstract: The present invention provides a VCA-based lens driving device. By way of giving an improved OIS coil structure, a magnetic induction element used to sense movement of magnets atop which maybe cause from a user's hand shaking can be placed as far away from OIS coils as possible. The impact of the magnet field of the OIS coil on the magnetic induction element is thus reduced. In one embodiment, the OIS coil is down-sized to reduce the influence of the OIS coil on the magnetic induction element placed beside it. In another embodiment, the OIS coil has a one-sided indention and the magnetic induction element is placed below/or beside the indention of the OIS coil.

Abstract: A lens driving apparatus comprises a lens portion having at least one lens (21), a first driving portion (39) to cause a movement of said lens portion relatively to a base portion (40) along a vertical direction of a light axis (L) of said lens portion, and a second driving portion (38) to cause a movement of said lens portion relatively to said base portion along said light axis.

Abstract: An electromagnetic driving device defined with an X axis, a Y axis and a Z axis includes a casing, a frame, a driven object (e.g., a lens module), an anti-tilt mechanism and an electromagnetic driving module. The electromagnetic driving module includes at least one magnetic member, a coil and a circuit board. The frame connects to the casing so as to form an inner compartment therein. The driven object is received and movable along the Z axis inside the inner compartment. One of the magnetic member and the coil is fixed to the driven object while another thereof is fixed to the frame in such a corresponding manner that, when the coil is powered via the circuit board, the driven object would be moved linearly. By means of the anti-tilt mechanism, possible kinetic tilt caused by movements of the driven object upon when the driven object is driven to move along the Z axis can then be eliminated.

Abstract: Optical scanning devices and systems are disclosed. In one aspect, an optical scanning device comprises a first rotatable optical component and a second rotatable optical component. The first and second optical components are configured to rotate about a common optical axis and further configured to deflect an optical path of light transmitted or received through the optical scanning device. The device further comprises a mounting bracket positioned between the first and second optical components and comprises first and second motor assemblies configured to rotate the corresponding first and second optical components about the optical axis independently of each other. An inner portion of each of the first and second optical components is mounted to an outer portion of the corresponding first and second motor assemblies such that the optical axis is configured to extend through the center of the first and second optical components and tubes.

Abstract: Provided is an image blur correction apparatus including a lens unit configured to include at least one lens and configured to be turnable in two different directions using, as supporting points, two axes that are orthogonal to an outer housing, a fixed member configured to turnably support the lens unit in the two directions, a first drive motor configured to be mounted on the fixed member and configured to turn the lens unit in one of the two directions, a second drive motor configured to be mounted on the fixed member and configured to turn the lens unit in another of the two directions, and a coupling member configured to be coupled to the first drive motor and the second drive motor and configured to include a coupling portion.

Abstract: A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, and a positive fourth lens group. During magnification change from the wide-angle end to the telephoto end, the first and third lens groups are fixed in the optical axis direction, the second lens group is moved toward the image side, and the fourth lens group is moved along the optical axis. The second lens group includes an air space formed between a convex surface and a concave surface, and a cemented surface between a negative lens and a positive lens. The third lens group consists of, in order from the object side, a fixed front group, and a positive rear group being able to be shifted in directions intersecting with the optical axis to shift the image formed on the reduced side.

Abstract: A zoom-lens consists of a positive-first-lens-group, fixed during magnification-change, a negative-second-lens-group, which moves from object-side toward image-side during magnification change from wide-angle-end to telephoto-end, a negative-third-lens-group, which corrects movement of an image-plane during magnification-change, and a positive-fourth-lens-group, which is fixed during magnification-change and includes a stop, in this order from object-side. The first-lens-group consists of a negative-1a-th-lens-group, fixed during focusing, a positive-1b-th-lens-group, which moves during focusing, and a positive-1c-th-lens-group, fixed during focusing, in this order from object-side. The second-lens-group consists of a negative-2a-th-lens-group and a positive-2b-th-lens-group, and a distance therebetween is changed during magnification-change.

Abstract: An optical anti-shake apparatus with a switchable light path is furnished in an optical system having two light paths of different directions. The optical system also comprises a lens module, an image capturing module, an anti-shake device and a switching device. The lens module corresponds to the image capturing module in position. The switching device comprises a fixing member, a rotary member and a driving module. The rotary member is pivotal about the fixing member. The driving module is located between the rotary member and the fixing member. The anti-shake device is located on the rotary member such that the driving module can drive and rotate the rotary member together with the anti-shake device in order to perform switching operations, and thereby the light of either of the two light paths can be directed toward the lens module so as to focus at the image capturing module.

Abstract: A camera driving apparatus according to the present invention includes: a camera section with an imaging plane; a movable unit which houses the camera section inside and includes an attracting magnet and a convex partial sphere on its outer surface; a fixed unit which has a depressed portion in which a magnetic body and the movable unit are loosely fit, which brings the convex partial sphere of the movable unit into a point or line contact with the depressed portion under magnetic attractive force of the attracting magnet to the magnetic body, and which allows the movable unit to rotate freely on the spherical centroid of the first convex partial sphere; a panning driving section; a tilting driving section; a rolling driving section; a camera driving section which shifts an image sensor two-dimensionally in a plane that intersects with the optical axis at right angles and which rotates the image sensor on the optical axis; a first detector which detects the tilt angles of the camera section in the panning and

Abstract: A lens barrel includes: a cam cylinder on which a plurality of cam grooves is formed; a plurality of lens groups that has equal to or more than one lens each; and a plurality of lens-holding frames that integrally holds the lens per lens group, has a cam follower each that engages with each cam groove, and is moved along an optical axis direction along a track of each cam groove, each lens-holding frame having: a lens supporting part; and a cylindrical part, and on an outer circumferential surface of which the cam follower is protrusively provided, wherein an inner circumferential part corresponding to a position of the cam follower in the cylindrical part of each lens-holding frame and a cylindrical part of a lens-holding frame positioned on an image plane side are arranged to always overlap in the optical axis direction.

Abstract: The zoom lens includes: a positive first lens unit; a positive second lens unit disposed in an image side of the first lens unit, at least a part of the second lens unit constituting an image stabilizing lens unit configured to move with a component perpendicular to an optical axis; the zoom lens being configured to change an interval between neighboring lens units during zooming; and an aperture stop arranged in the image side of the first lens unit, wherein a focal length of the first lens unit, a focal length of the image stabilizing lens unit, a focal length at a wide angle end of an optical system Lr arranged on the image side of the image stabilizing lens unit, and a focal length of an entire system at the wide angle end are appropriately set.

Abstract: A zoom lens includes, in order from an object side to an image side: a positive first lens unit; a positive second lens unit; and an aperture stop disposed between the first and second lens units and moving along a locus different from loci of the first and the second lens units during zooming, the first and second lens units being configured to change an interval therebetween during zooming, the second lens unit including at least one positive lens and at least one negative lens. A distance from a lens surface closest to the object side in the entire system to the aperture stop at a wide angle end, and a distance from the lens surface closest to the object side in the entire system to a lens surface closest to the object side in the second lens unit at the wide angle end are each appropriately set.

Abstract: A lens barrel (1) comprises an actuator (430), and an image blurring correction device (500) provided near the actuator (430). The image blurring correction device (500) has a magnetic sensor (524), a magnet (515), and a shield plate (514). The shield plate (514) comprises a main body (514a) that is opposite the magnet (515), and a protrusion (514b) that protrudes from the main body (514a). The main body (514a) is provided at a position through which pass lines of magnetic force generated from a first magnetic pole, out of the lines of magnetic force produced from the actuator (430). The protrusion (514b) is provided at a position through which pass lines of magnetic force generated from a second magnetic pole, out of the lines of magnetic force produced from the actuator (430).

Abstract: An SMA actuation apparatus moves a movable element, such as a camera lens element, relative to a support structure in any direction perpendicular to a notional primary axis using N pairs of SMA actuator wires extending perpendicular to said primary axis, where N is three or more. The SMA actuator wires of each pair extend parallel to each other and being connected at their ends in tension to the movable element and the support structure in opposition to apply a force to the movable element in opposite directions. The SMA actuator wires are arranged around the movable element such that they are capable of being selectively driven to move the movable element in any direction perpendicular to said primary axis. Accordingly, it is possible to drive movement with an apparatus that is compact along the primary axis.

Abstract: A zoom lens has, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, and a positive fourth lens group. During magnification change from the wide-angle end to the telephoto end, the first and the third lens groups are fixed in the optical axis direction, the second lens group is moved toward the image side, and the fourth lens group is moved along the optical axis. The first lens group has, in order from the object side, a cemented lens formed by a negative lens and a positive lens, and two positive lenses. The third lens group has, in order from the object side, a fixed front group, and a positive rear group being able to be shifted in directions intersecting with the optical axis to shift the image formed on the reduced side.

Abstract: A zoom lens system comprising a positive first lens unit composed of three or four lens elements, a negative second lens unit, and subsequent lens units, wherein the subsequent lens units include an aperture diaphragm, an image blur compensating lens unit, and a focusing lens unit, which are provided on the image side relative to the aperture diaphragm, and the conditions: 1.8<|(YW/fW)×FNOT×(fT/fW)|<4.5 and 0.001<(D1W+D2T)/fW<0.200 (YW=fW×tan(?W), fW, fT: focal length of the zoom lens system at wide-angle limit, telephoto limit, ?W: half view angle at wide-angle limit, FNOT: F-number at telephoto limit, D1W: inter-apex distance between the first and second lens units at wide-angle limit, D2T: inter-apex distance between the second lens unit and a most object side lens unit among the subsequent lens units at telephoto limit) are satisfied.

Abstract: A lens barrel includes a first lens disposed on a first optical axis, a bending optical element configured to bend a light flux incident from a direction of the first optical axis toward a direction of a second optical axis extending in a direction different from the direction of the first optical axis, and a holding member configured to hold the bending optical element, wherein, when the lens barrel shifts from a photographing state to a retracted state, the holding member holding the bending optical element moves along the second optical axis while rotating around a rotational axis extending in a direction different from the directions of the first optical axis and the second optical axis.

Abstract: A scanning lens component includes a primary and transverse axis stages and motors. The primary axis motor includes a first coil moving along the primary axis in the first direction along with the primary axis stage and a first magnet configured to move in a second, opposite direction, in response to movement of the first coil a first distance that exceeds a threshold primary axis distance. The transverse axis stage is adjacent and coupled to the primary axis stage and moves along a transverse axis in a third direction. The transverse axis motor includes a second coil for moving along the transverse axis in the third direction with the transverse axis stage, and a second magnet configured to move in a fourth, opposite direction, in response to movement of the second coil along the transverse axis in the third direction a second distance that exceeds a threshold transverse axis distance.

Abstract: A clip-on eyepiece system that enables a single portable digital imager to be used in both handheld and device-mounted applications is disclosed. The system has a clip-on eyepiece assembly that includes an inverting or a non-inverting eyepiece, a clip-on bracket, a T-mount, and a magnet. The digital imager comprises a display, a mounting rail, a Hall-effect sensor, and a processor all configured to dynamically determine which type of eyepiece, if any, is attached, and to dynamically set system parameters to configure the digital imager for use in either a handheld or a mounted mode. A method for setting operational parameters when the user attaches or detaches the clip-on eyepiece assembly is also disclosed.

Abstract: A lens actuator module including an autofocus (AF) mechanism capable of moving a lens according to at least three degrees of freedom and an optical image stabilization (OIS) mechanism capable of moving the lens according to at least two degrees of freedom. The AF mechanism may have a coil and a magnet assembly for driving movement of the lens according to the at least three degrees of freedom. The optical image stabilization (OIS) mechanism may include a coil and a magnet assembly for driving movement of the lens according to the at least two degrees of freedom.

Abstract: A zoom lens includes, from the object side to the image side, first to sixth lens units having positive, negative, positive, negative, positive, negative refracting powers. In zooming from the wide angle end to the telephoto end, the lens units are moved such that the distance between the first and second lens units increases, the distance between the second and third lens units decreases, the distance between the third and fourth lens units increases, and the distance between the fourth and fifth lens units decreases. In focusing from an infinitely distant object to a near object, the sixth lens unit is moved toward the image side. The distance between the rear principal point of the second lens unit and the front principal point of the rear lens group at the wide angle end, and the focal length of the rear lens group at the wide angle end are appropriately set.

Abstract: An optical image stabilizer, in which a magnet and a coil are arranged such that they oppose each other. The Hall sensor is arranged such that one face thereof is opposed to one face of the magnet. The Hall sensor can easily detect the location of a group of lenses by generating a corresponding signal in response to a variation in magnetic force following a variation in the gap between magnets depending on the direction in which a group of lenses is driven, and simultaneously, in response to a variation in magnetic force that occurs when the group of lenses is displaced in the direction that intersects the direction of the gap.

Abstract: An internal focus lens includes sequentially from an object side, a first lens group having a positive refractive power; a second lens group having a negative refractive power; and a third lens group having a positive refractive power. The first lens group includes an anti-vibration lens formed by a negative lens that is moved in an orthogonal direction with respect to an optical axis to correct image blur consequent to optical system vibration, and further includes an aperture stop disposed farther on an image side of the first lens group than the anti-vibration lens. The second lens group is moved along the optical axis to perform focusing.

Abstract: A set of compound lenses according to the present invention forms, on an imaging device, an optical image of an object. The set of compound lenses includes a focus lens group including one or more lenses; a driving unit shifting a range of focus by moving the focus lens group within a predetermined range during an exposure period; and a correcting lens group correcting a shift in a position of an image formed on the imaging device to one pixel or less, the shift occurring when the focus lens group moves within the predetermined range.

Abstract: An image forming lens system includes a front lens unit having a positive refractive power, and a rear lens unit, and does not include any other lens unit. The front lens unit includes a first lens unit having a positive refractive power and a second lens unit having a negative refractive power. Each of the first lens unit and the second lens unit includes a positive lens and a negative lens. The second lens unit is a focusing lens unit. The rear lens unit includes a positive lens and a negative lens. The second lens unit is the only lens unit that moves, in the front lens unit, and the following conditional expressions (1) and (2?) are satisfied: 0.5<fFF/f<1.65 ??(1) 0?|f/rG2b|<6.

Abstract: A single focal length lens system includes a front lens unit and a rear lens unit, and does not include any other lens unit. The front lens unit includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a negative refractive power. Each of the first lens unit and the second lens unit includes a positive lens and a negative lens, and the first lens unit and the second lens unit do not move all the time. An aperture stop is disposed on the image side of the second lens unit. Any one of the lens units positioned on the image side of the second lens unit is a focusing lens unit, and the following conditional expression (1) is satisfied: 0.06<|fG3/f|<0.

Abstract: A lens driving device includes a lens barrel supporting a lens; an autofocusing driving unit disposed on one side of a plane perpendicular to an optical axis direction based on the lens barrel to thereby drive the lens barrel in the optical axis direction; and a hand-shake prevention driving unit disposed on sides of the plane perpendicular to the optical axis direction other than the one side on which the autofocusing driving unit is disposed, to thereby drive the lens in a direction perpendicular to the optical axis direction.

Abstract: An AF unit of a lens holder driving device includes a lens holder, a focusing coil, a permanent magnet having a plurality of permanent magnet pieces having first surfaces opposed to the focusing coil, a magnet holder holding the permanent magnet, and first and second leaf springs supporting the lens holder in a direction of an optical axis shiftably. An image stabilizer portion includes a fixed portion disposed near the second leaf spring, a supporting member swingably supporting the AF unit with respect to the fixed portion, an image stabilizer coil having a plurality of image stabilizer coil portions disposed so as to oppose to second surfaces of the plurality of permanent magnet pieces that are perpendicular to the first surfaces, and a plurality of Hall elements. Each Hall element is disposed at a position where the image stabilizer coil portion is separated into a plurality of coil parts.

Abstract: A vibration type driving apparatus including: a vibrator including an electro-mechanical energy conversion device; a driven body between the vibrator and a movable body and driven in a first direction by the vibrator; and a moving mechanism that allows the movable body to move in a second direction relative to the driven body, in which the second direction is a direction intersecting the first direction in a plane parallel to a plane where the vibrator and the driven body are in contact with each other.

Abstract: The lens drive device is equipped with a first supporting body that holds the lens and is movable in the direction of the optical axis, a second supporting body that holds the first supporting body, a fixed body that holds the second supporting body in a manner enabling movement in directions that are roughly orthogonal to the optical axis direction, a first drive mechanism for driving the first supporting body, a second drive mechanism for driving the second supporting body in a first direction, and a third drive mechanism for driving the second supporting body in a second direction. The first supporting body is supported by the second supporting body by means of first supporting members (8, 9), which are formed from an elastic material; and the second supporting body is supported by the fixed body by means of second supporting members, which are formed from an elastic material.

Abstract: An image forming lens system includes an aperture stop, and an image-side lens unit group which is disposed on an image side of the aperture stop. The image-side lens unit group includes a first image-side lens unit having a negative refractive power, a second image-side lens unit having a positive refractive power, and a third image-side lens unit having a negative refractive power. Any one of the first image-side lens unit, the second image side lens unit, and the third image-side lens unit is a focusing lens unit which moves along the optical axis at the time of focusing, and the following conditional expression (1) is satisfied: 0.06<|ffo/f|<0.4 ??(1) where, f denotes a focal length of the image forming lens system at the time of focusing at an object at infinity, and ffo denotes a focal length of the focusing lens unit.

Abstract: An image stabilizing apparatus includes a shift member holding a lens, a first driver moving the shift member in a first direction in a plane orthogonal to an optical axis, and a second driver moving the shift member in a second direction in the plane orthogonal to the optical axis. The first driver includes a first magnet, a first coil, and a first yoke in order in an optical axis direction, the second driver includes a second magnet, a second coil, and a second yoke in order in the optical axis direction, the first yoke has a protrusion that protrudes in the first direction at least one of end portions extending in a direction orthogonal to the first direction, and the second yoke has a protrusion that protrudes in the second direction at least one of end portions extending in a direction orthogonal to the second direction.

Abstract: A zoom lens system includes a negative first lens group, a positive second lens group, a negative third lens group and a positive fourth lens group, in that order from the object side. Upon zooming from the short to long focal length extremities, at least the first lens group, the second lens group and the fourth lens group are moved in the optical axis direction. The third lens group includes a negative first sub-lens group and a negative second sub-lens group, in that order from the object side. The second sub-lens group is provided with a negative single lens element and a positive single lens element, wherein an air lens is formed between the negative single lens element and the positive single lens element.

Abstract: Disclosed is a zoom lens that forms an optical image of an object on a light receiving surface of an imaging element converting the optical image to an electrical signal, having the diagonal length of 2Ymax, is constituted by a positive first group, a negative second group, a negative third group, an aperture, and a rear group having positive power as a whole, in order from an object side, and satisfies a conditional expression 1.5<frw/Ymax<2.1 (frw denotes the combined focal length of the rear group on a wide end, and Ymax denotes the maximum image height).

Abstract: An anti-shake lens driving apparatus is provided, including a lens carrier, for carrying at least a lens set; a magnet module, disposed on the outer surroundings of the lens carrier for pushing the lens carrier; a suspension part, further including an upper suspension resilient element and a lower suspension resilient element, the upper and lower suspension resilient elements respectively including a fixed part, a movable part and at least a suspension element; the at least a suspension element connecting the fixed part and the movable part; the fixed part being fixed to an upper cover and a base; the movable part being fixed to the upper and lower part of the lens carrier respectively; and the upper cover and the base being disposed respectively at the upper and lower part of the magnet module and the suspension part for providing protection.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power. In the zoom lens, each lens unit moves to perform zooming. In addition, an amount of movement Mm of the fourth lens unit when zooming from a wide angle end to an intermediate zooming position, an amount of movement Mt of the fourth lens unit when zooming from the wide angle end to a telephoto end, a focal length fw of an entire system at the wide angle end, and focal lengths f3 and f4 of the respective third lens unit and fourth lens unit are properly set.

Abstract: A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, and a positive fourth lens group. During magnification change from the wide-angle end to the telephoto end, the first and third lens groups are fixed in the optical axis direction, the second lens group is moved toward the image side, and the fourth lens group is moved along the optical axis. The second lens group includes an air space formed between a convex surface and a concave surface, and a cemented surface between a negative lens and a positive lens. The third lens group consists of, in order from the object side, a fixed front group, and a positive rear group being able to be shifted in directions intersecting with the optical axis to shift the image formed on the reduced side.

Abstract: A first lens group includes a plano-concave and negative first lens, a catoptric element having a flat object side surface and a flat image side surface, and a first cemented lens, for example. Here, the first cemented lens includes a negative second lens and a positive third lens in order from an object side. A second lens group includes an aperture stop and a positive second cemented lens, for example. The second cemented lens includes a positive fourth lens, a negative fifth lens, and a positive sixth lens in order from the object side. A zoom lens satisfies a conditional expression 1.59<n21<2.20, assuming that a value n21 indicates refractive index of the fourth lens on a side closest to an object in the second lens group.

Abstract: A single focal length lens system includes a front lens unit having a positive refractive power, and a rear lens unit. The front lens unit includes a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens unit having a positive refractive power, and both the first lens unit and the second lens unit include a positive lens and a negative lens. The rear lens unit includes a focusing lens unit and a first predetermined lens unit. The first predetermined lens unit has a refractive power having a sign different from a refractive power of the focusing lens unit, and does not move at the time of focusing. The front lens unit does not include a lens which moves, and the rear lens unit does not include a lens which moves except at the time of focusing.

Abstract: A single focal length lens system includes in order from an object side to an image side along an optical axis, a front lens unit, and a rear lens unit which includes an aperture stop. The single focal length lens system does not include any other lens unit on the optical axis, and the rear lens unit includes a focusing lens unit having a negative refractive power. The focusing lens unit is disposed on the image side of the aperture stop, and moves along the optical axis at the time of focusing from an object at infinity to an object at a close distance. The front lens unit does not include a lens which moves in an optical axial direction, and the rear lens unit does not include a lens which moves in the optical axial direction except at the time of focusing.

Abstract: A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, and a positive fourth lens group. During magnification change from the wide-angle end to the telephoto end, the first and the third lens groups are fixed in the optical axis direction, the second lens group is moved toward the image side, and the fourth lens group is moved along the optical axis. The first lens group consists of, in order from the object side, a cemented lens formed by a negative lens and a positive lens, and two positive lenses. The third lens group consists of, in order from the object side, a fixed front group, and a positive rear group being able to be shifted in directions intersecting with the optical axis to shift the image formed on the reduced side.

Abstract: The present invention aims to provide a shaking correction device which is the shaking correction device for a camera. The shaking correction device can be produced at a low cost without adding the assembling working procedure of the lens driving device, and the shaking correction device is of a simple structure whatever the size and mounting position of the lens driving device are. The shaking correction device comprises a first stator, a second stator, and a first movable part and a second movable part which are supported to be enabled to move by the first stator and the second stator. The first stator and the second stator are mounted in a frame body for retaining the lens driving device.

Abstract: Embodiments of the invention provide an apparatus for driving a voice coil motor actuator providing a driving signal to a coil for controlling a position of a lens barrel in which a magnet is equipped. The apparatus includes a plurality of hall sensors configured to detect the position of the lens barrel in which the magnet is equipped, and a voice coil motor driving integrated circuit configured to provide the driving signal to the coil based on outputs from the plurality of hall sensors and a received target position. The plurality of hall sensors are embedded in the voice coil motor driving integrated circuit along a moving direction of the magnet.