Abstract: The present invention provides a lens holding device excellent in an impact resistance. The lens holding device comprising a lens carrier having a cylindrical shape extending in an optical axis direction of a lens and holding said lens at an inner peripheral face side, a coil provided to a coil attaching part formed at an outer peripheral face of said lens carrier, an outer wall part, an inner wall part placed so that said coil is between said outer wall part, a connection part connecting said outer wall part and said inner wall part; and said inner face part has an inner face facing said lens carrier, an outer face facing said coil, and a first side face and a second side face which connects said inner face and said outer face and approximately parallel to each other, further at said outer peripheral face of said lens carrier, a control part is formed which has a main face facing said inner face, a first projection face facing said first side face, and a second projection face facing said second side face.

Abstract: An optical instrument comprising a focusing lens provided inside a lens barrel, a ring member that is arranged to rotate with respect to a lens barrel, and to slide to a first position and a second position, a focusing mode setting section, provided on a camera body, for setting focusing mode, and a control section for, when the ring member has been slid to the first position, carrying out focusing in a focusing mode that was set in the focusing mode setting section, and when the ring member has been slid to the second position, stopping focusing the focusing mode that was set in the focusing mode setting section, and performing focusing of the focusing lens to a distance corresponding to an absolute position of the ring member.

Abstract: A microelectromechanical systems (MEMS) device may be provided with one or more sintered electrical contacts. The MEMS device may be a MEMS actuator or a MEMS sensor. The sintered electrical contacts may be silver-paste metalized electrical contacts. The sintered electrical contacts may be formed by depositing a sintering material such as a metal paste, a metal preform, a metal ink, or a metal powder on a wafer of released MEMS devices and heating the wafer so that the deposited sintering material diffuses into a substrate of the device, thereby making electrical contact with the device. The deposited sintering material may break through an insulating layer on the substrate during the sintering process. The MEMS device may be a multiple degree of freedom actuator having first and second MEMS actuators that facilitate autofocus, zoom, and optical image stabilization for a camera.

Abstract: The invention provides, in some aspects, devices for image acquisition that use seals between concentrically disposed portions of an enclosure and an optics assembly in order to protect image acquisition components from the surrounding environment while providing adequate friction for both adjusting and locking focus. Such devices can include an image capture medium that is disposed within an enclosure and an optics assembly that is also disposed within that enclosure. The optics assembly, which includes at least a lens, can have a cylindrical outer diameter along at least a portion of its length that is received within the enclosure along a length that has a corresponding cylindrical inner diameter. A first seal is disposed between, and in contact with, the optics assembly and the enclosure. That seal permits rotation of the optics assembly for purposes of focusing the lens, while preventing contamination from the environment from entering into the enclosure.

Abstract: Disclosed is an adjustable attaching lens device comprising a lens holding member including a flexible confining strip and an adjustable fastener that is for adjusting a fastening position of the flexible confining strip, wherein the flexible confining strip is bent to confine a lens attaching hole with a given size and a given shape for holding an optical lens; and an attaching member, provided on the lens holding member in a manner that the attaching member is facing toward the same side of the lens attaching hole, for attaching with an attaching surface so that the lens attaching hole corresponds to an optical image grabbing element of an external device. The various kinds of detachable lenses are applied to an electric device with lens, and thus the detachable lens compatible to a specific electric device can be used for a different device.

Abstract: The optical apparatus includes a first holding member holding an optical element, a second holding member holding the first holding member, and an adjustment mechanism. The adjustment mechanism includes a fulcrum portion provided at one place in a circumferential direction and connecting the first and second holding member so as to allow movements of the first holding member in decentering and tilting correction directions with respect to the second holding member. The adjustment mechanism further includes two decentering adjustment portions arranged in the circumferential direction and each including a first adjusting member, and two tilting adjustment portions arranged in the circumferential direction and each including a second adjusting member. The first and second adjusting members each have an eccentric portion eccentric with respect to its rotation center portion.

Abstract: A lens barrel includes a lens retaining member retaining a lens group and having a retaining-side cam follower, a moving member being movable in an optical axis direction with respect to the lens retaining member and having a moving-side cam follower, a rotary barrel having a retaining-side cam groove and a moving-side cam groove and being configured to rotate, thereby giving the lens retaining member and the moving member moving force; an elastic member giving the lens retaining member and the moving member relatively pushing force in the optical axis direction, and a rotating load restraining mechanism retaining rotating load of the rotary barrel generated by the pushing force. The rotating load restraining mechanism includes the moving-side cam groove provided such that the angle made by the part on which the moving-side cam follower abuts and the plane orthogonal to the optical axis becomes small, in a sharply inclined area.

Abstract: A lens position adjustment apparatus includes: a transmission unit that is displaced in a first direction oriented from one end point toward the other end point or a second direction oriented from the other endpoint toward the one endpoint to transmit power of a drive source; a conversion unit that moves a lens by using the power supplied from the transmission unit; a drive control unit that controls the drive source; a position detection unit that detects a current position of the transmission unit; and a storage unit that stores a registered position and a registered direction, wherein the drive control unit controls the drive source in such a way that a final displacement direction is the second direction in case that the registered position is within a predetermined amount of displacement from the one end point, and that the final displacement direction is the registered direction otherwise.

Abstract: A lens barrel includes a fixed cylinder configured to hold a plurality of lens units that constitute a main optical system, an extender configured to be rotatably held by the fixed cylinder and disposed between the plurality of lens units, a first shaft configured to rotate the extender around a first axis that is parallel to an optical axis of the main optical system so that the extender is inserted into or retracted from an optical path of the main optical system, a second shaft configured to rotate around a second axis that is parallel to the optical axis so as to transmit a rotation to the first shaft, and an exterior member attached to the fixed cylinder, the second shaft is attached to the exterior member, the exterior member is attached to the fixed cylinder, and the rotation of the second shaft is transmitted to the first shaft.

Abstract: A lens barrel includes a moving frame, a stepper motor that drives the moving frame, a screw member that rotates in accordance with rotation of the stepper motor, a screw gear that rotates in accordance with rotation of the screw member, a nut member that screws with the screw member, moves, by pressing, the moving frame, an external rotation operation ring, including a drive gear that rotates in response to external operation, that switches between a first state where the drive gear meshes with the screw gear, rotates the screw member, and drives the moving frame and a second state where the drive gear and the screw gear are not meshed, and control means that drive-controls the stepper motor in conjunction with rotation of the external rotation operation ring when the external rotation operation ring is in the second state.

Abstract: A lens driving apparatus includes a housing, a lens holder mounted on a base of the housing and moveable along an optical axis, a stationary guide member provided on the base, and a moveable guide member provided on and moveable with the lens holder, wherein the moveable guide member is frictionally engaged with the stationary guide member and slidable therealong when the lens holder is activated. The apparatus further include a plurality of magnets with magnetization direction lying on a plane perpendicular to the optical axis, a coil disposed adjacent and parallel to the magnets, and a position encoder provided on the lens holder or the support for close loop control of the movement of the lens holder.

Abstract: A lens driving system is configured for driving a lens to a focus position, and includes a control unit and a driving unit electrically connected to the control unit and coupled with the lens. The control unit acquires the focus position, calculates a main current value according to the focus position, and calculates a number of secondary current values according to the main current value. The secondary current values gradually increase to the main current value. The driving unit drives the lens to the focus position according to the secondary current values.

Abstract: The lens barrel includes a first frame, a second frame configured to be rotatably supported by the first frame, a drive actuator that is disposed on the inside of the second frame, and a transmission mechanism disposed on the inside of the second frame and configured to transmit the drive force of the drive actuator to the second frame. The imaging device includes the above-mentioned lens barrel and an imaging element that converts an optical image formed by this lens barrel into image data.

Abstract: A modular focus system for image based code readers includes swappable lens attachments enables fixed focus, manual focus, and variable focus operation from a single reader. A manual focus lens cap includes a manually adjustable focus ring to change the focus of the reader. A variable focus lens module includes a liquid lens that is manipulated by a voltage delivered via a pair of electrodes to adjust the focus of the reader. The lens attachments can be swapped out and replaced as needed.

Abstract: A lens actuating device includes a fixed member, an adjustable member, a driving unit and a movable support unit. The adjustable member is movably disposed in the fixed member along an optical axis, and has a lens module disposed therein. The driving unit is disposed between the fixed member and the adjustable member to provide a driving force for the adjustable member. The movable support unit is disposed at one side of the adjustable member opposite to the driving unit and has a first guiding structure formed on an inner side of the fixed member parallel to the optical axis, a second guiding structure, and a plurality of rolling members. The rolling members are configured into two rows and are disposed between the first and second guiding structures to fix the seconding guiding structure such that the displacement of the adjustable member is constrained along the optical axis.

Abstract: A lens driver which moves at least one lens relative to a supporter includes a holder provided in the supporter to hold the lens to be movable in an optical axis direction, a driver configured to apply to the holder a driving force in the optical axis direction, and a position detector configured to detect a position of the holder in the optical axis direction relative to the supporter, and the lens driver including a coil provided in one of the holder and the supporter to form a straight electric path orthogonal to the optical axis direction, and a magnetic circuit provided in the other of the holder and the supporter, the magnetic circuit including a rectangular magnetic pole surface having a predetermined width to form a magnetic field orthogonal to the optical axis direction and the electric path, and being provided such that the magnetic pole surface faces the optical path.

Abstract: A lens drive device comprises a lens holder, a piezoelectric actuator, a ball member held rotatably, and an biasing member configured to apply an biasing force to the lens holder toward the piezoelectric actuator through the ball member. The lens holder has a projection projecting outward from an outer peripheral surface and extending in a direction intersecting the projecting direction and optical axis. A side wall face of the projection is formed with a groove extending along the optical axis and engaging the ball member. A position receiving the biasing force from the biasing member and a position receiving the drive force from the actuator in the lens holder oppose each other through the projection interposed therebetween.

Abstract: The present lens barrel is provided with a cylindrical moving frame and a cylindrical cam frame disposed on the inner periphery of the moving frame. The cylindrical moving frame has a first cam follower and a second cam follower. The first cam follower projects radially from the inner peripheral surface or the outer peripheral surface. The second cam follower projects radially further from the top of the first cam follower. The cylindrical cam frame is disposed on the inner periphery or the outer periphery of the moving frame, and has a first cam and a second cam on the outer peripheral surface side or the inner peripheral surface side. The first cam engages with the first cam follower, and has a cam surface only on the image plane side in the optical axis direction. The second cam is formed on the bottom surface of the first cam, and engages with the second cam follower.

Abstract: A focusing motor an enclosure includes: a lens barrel; a lower support; an iron sheet perpendicularly fixed to the lower support; a coil attached to an inner surface of the iron sheet; at least one pair of magnets arranged on an outer side of the barrel along an optic axis of the barrel and parallel to the coil, a magnetic pole of one magnet is opposite to that of an adjacent magnet; a first guide rail disposed on the outer side of the barrel; a second guide rail disposed on an inner side of the lower support and parallel to the first guide rail; and a pulley assembly located between the barrel and the lower support, and movable along the first and second guide rails.

Abstract: A lens device includes a movable optical element, a rotary member; first and second magnetic recording scales fixedly disposed on an outer periphery of the rotary member to extend along a peripheral direction of the rotary member; a signal detecting unit which detects first to fourth signals; and a position detecting unit which detects a position of the movable optical element based on the detected signals, in which the position detecting unit includes: a phase difference calculating unit which calculates a phase difference between the first signal and the third signal, based on the detected first to fourth signals for one cycle; a phase average calculating unit which calculates an average of the phase differences respectively calculated for n cycles; and an absolute position detecting unit which detects an absolute position of the movable optical element based on the calculated average.

Abstract: Disclosed is an adjustable attaching lens device comprising a lens holding member including a flexible confining strip and an adjustable fastener that is for adjusting a fastening position of the flexible confining strip, wherein the flexible confining strip is bent to confine a lens attaching hole with a given size and a given shape for holding an optical lens; and an attaching member, provided on the lens holding member in a manner that the attaching member is facing toward the same side of the lens attaching hole, for attaching with an attaching surface so that the lens attaching hole corresponds to an optical image grabbing element of an external device. The various kinds of detachable lenses are applied to an electric device with lens, and thus the detachable lens compatible to a specific electric device can be used for a different device.

Abstract: The present invention relates to a focusing device comprising: a lens, a lens plate, an image sensor, an image sensor plate, at least two rotatable structures, and at least two strips, wherein the lens is connected to the lens plate, the image sensor is connected to the image sensor plate, wherein each strip is arranged to be wound onto one of the rotatable structures, respectively, the rotatable structures and the strips are arranged between the lens plate and the image sensor plate, the rotatable structures and/or the strips are arranged in contact with the lens plate and the image sensor plate, and wherein a distance between the lens and the image sensor is adjusted by winding the strips onto or off the rotatable structures.

Abstract: Techniques are disclosed for systems and methods to provide concomitant mechanical motion inhibition and electrical distribution for actuator modules, such as microelectromechanical systems (MEMS) based optical actuators adapted to move and/or orient one or more lenses and/or optical devices of a camera module. A mechanical motion inhibition and electrical distribution system may include one or more flexible snubber structures disposed substantially adjacent a MEMS structure and between the MEMS structure and another component of a camera module. Each flexible snubber structure may be implemented with one or more electrical traces, flexible films, snubber films, and/or mechanical stabilizers adapted to route electrical signals to or from the MEMS structure and/or to inhibit mechanical motion of at least a portion of the MEMS structure.

Abstract: A lens barrel includes a fixed frame, a rotational frame, a first straight advance frame, a first lens retaining frame, and a first drive. The rotational frame engages with the fixed frame. The first straight advance frame engages with the rotational frame. The first lens retaining frame retains a first lens group and engage with the rotational frame. The first drive unit is attached to the first straight advance frame and drives rotationally the rotational frame around an optical axis. The first drive unit and the first straight advance frame move integrally with respect to the fixed frame in an optical axis direction according to a rotation of the rotational frame driven by the first drive unit. The first lens retaining frame further move with respect to the first straight advance frame in the optical axis direction, when the first straight advance frame moves such as above state.

Abstract: A lens unit according to the present invention includes: a first lens group and a second lens group being disposed in series on the same optical axis to have a light-converging function, the first lens group and the second lens group each including at least one lens; a first lens barrel 1 retaining the first lens group; a second lens barrel 2 retaining the second lens group and encasing at least a portion of the first lens barrel; and an adjustment mechanism for adjusting relative positioning along an optical axis direction, tilt between respective optical axes, and mutual radial deviation, of the first lens barrel and the second lens barrel.

Abstract: A focusing mechanism for focusing a lens module includes a base seat, a movable platform, a positioning assembly, a support bracket and a plurality of arms. The positioning assembly is fixed to the base seat and passes through a center of the movable platform, a lens of the lens module is detachably mounted on the positioning assembly. The support bracket is fixed to the movable platform. A sensor of the lens module is detachably mounted on the support bracket. Each of the plurality of arms rotatably interconnects the movable platform and the base seat, the movable platform drives the support bracket to rotate relative to the positioning assembly to enable the lens to rotate relative to the sensor via a drive of the arms.

Abstract: The zoom lens includes a front unit including a first positive lens unit and a second positive or negative lens unit, a reflective mirror and a rear unit including two or more lens units. During zooming, the reflective mirror is not moved, and the first lens unit and at least two lens units of the rear unit are moved. When the zoom lens is retracted into a body of an image pickup apparatus, at least one of rotation of the reflective mirror such that a normal line thereto is brought closer to parallel to an optical axis of the rear unit and axial movement thereof in a direction of the optical axis of the rear unit is performed. The front unit is moved into a space formed by the at least one of the rotation and the axial movement. Conditions of 10.5<ft/|fn|<30.0 and 0.80<(Lf?L)/Lm<1.30 are satisfied.

Abstract: A lens driving system is configured for driving a lens to a focus position, and includes a control unit and a driving unit electrically connected to the control unit and coupled with the lens. The control unit acquires the focus position, calculates a main current value according to the focus position, and calculates a number of secondary current values according to the main current value. The secondary current values gradually increase to the main current value. The driving unit drives the lens to the focus position according to the secondary current values.

Abstract: An object is to realize further size reduction in a lens barrel in which a barrel unit is rotatable in three axis directions. The lens barrel includes a support portion for supporting the barrel unit, a part of the support portion being fixed to an external member, an actuator including a drive base movable in a direction parallel to a surface passing through an optical axis of the barrel unit, and a universal joint mechanism portion for linking the barrel unit and the drive base of the actuator. The support portion supports the barrel unit rotatably about a pitch axis, a roll axis, and a yaw axis with respect to the optical axis direction, and the actuator drives the barrel unit about the pitch axis, the roll axis, and the yaw axis by moving the drive base.

Abstract: A lens barrel includes: a barrel body; an optical element inside the barrel body; and a wiring which is inserted inside the barrel body, and at least a part of which has a three-dimensional curve shape capable of extending and contracting in a direction of an optical axis of the optical element.

Abstract: A lead screw device includes a lead screw including a thread portion, and a driven body which engages with the thread portion, and moves in an axis direction of the lead screw along with rotation of the lead screw about an axis, the driven body including a pair of driven members disposed to sandwich the lead screw in a radial direction, wherein the pair of driven members is biased in a direction which sandwiches the lead screw in the radial direction, and a tooth portion provided in each of the driven members engages with the thread portion of the lead screw by a biasing force.

Abstract: A lens barrel includes: a lens holder which holds a lens group and includes a cam follower; a rotating cylinder including on a circumferential surface thereof a cam groove; a guide member to which the rotating cylinder is rotatably provided, which guides the lens holder to move in an optical axis direction; and a transmission member which transmits a drive force outputted from a drive source to the rotating cylinder. When the drive force is transmitted and the rotating cylinder rotates, the lens holder is guided in the optical axis direction and the cam groove has contact with the cam follower, and thereby the lens holder moves back and forth in accordance with a rotation posture of the rotating cylinder. The transmission member is provided on a more inner side than one, which is provided on an outermost side, of the lens holder, the guide member, and the rotating member.

Abstract: A zoom lens barrel assembly includes: a first zoom ring that supports a first lens group; a first guide ring, of which the first zoom ring is disposed on an inner side, is cam-connected to the first zoom ring to cause the first lens group to move linearly along an optical axis direction by rotation; a second zoom ring that supports a second lens group and is cam-connected to the first guide ring to move linearly along the optical axis direction; a second guide ring cam-connected to the first guide ring and configured to move linearly along the optical axis direction to rotate the first guide ring; a second cylinder configured to move linearly along the optical axis direction together with the second zoom ring while being rotated; and an external cylinder including a third lens group and is cam-connected to the second cylinder to cause the second cylinder to rotate.

Abstract: A barrel driving mechanism and an image pickup device thereof. The barrel driving mechanism comprises a fixing-barrel, a driving-barrel and a moving-barrel. The fixing-barrel has a first groove with a first stop-position and a first position. The driving-barrel disposed in the fixing-barrel has a second groove with a second stop-position and a second position. The driving-barrel has a first guiding protrusion inserted into the first groove. The moving-barrel disposed in the driving-barrel having a second guiding protrusion is inserted into the second groove. Wherein, the first stop-position to the first position and the second stop-position to the second position are slanted grooves. When the driving-barrel is rotated, the driving-barrel shifts a first axial distance and the moving-barrel shifts a second axial distance. The sum of the first axial distance and the second axial distance equals the total displacement of the moving barrel.

Abstract: A lens barrel includes a first lens, a second lens, a first frame body, a second frame body, and a retracting lens frame. The retracting lens frame is configured to move so that a position of the second optical axis of the second lens changes from a position on the first optical axis of the first lens to a position that is outside the first optical axis, during the transition period between the imaging enabled state and the housed state. A contact portion is formed on the inner peripheral part of the first frame body. A protrusion of the retracting lens frame is configured to engage with and guided by the contact portion during movement of the retracting lens frame. The thickness of a region constituting the side wall of the contact portion is increased over the thickness of the other region toward the inside of the cylindrical part.

Abstract: The lens barrel includes a support frame and a retracting lens frame. The retracting lens frame is configured to support a lens and move around a retraction shaft with respect to the support frame during a transition period between an imaging enabled state and a housed state. The retraction shaft is substantially parallel to the optical axis. The retracting lens frame includes at least three contact portions. The at least three contact portions is configured to come into contact with the support frame at positions that are different from the retraction shaft. Movement of the retracting lens frame in the optical axis direction is restricted when the contact portions come into contact with the support frame. At least one of the contact portions is provided to the retracting lens frame so as to overlap the lens in a direction perpendicular to the optical axis.

Abstract: The lens barrel includes a first planar portion, a barrier front cover, a vane portion, and a lens group frame. The first planar portion is configured to be substantially perpendicular to an optical axis and includes a first opening portion. The barrier front cover includes a second opening portion. The vane portion is configured to move between a first position and a second position. The vane portion is configured to cover the first opening portion and the second opening portion at the first position, and allow the first opening portion and the second opening portion to open at the second position. The lens group frame is configured to support rotatably the vane portion and includes at least one lens. The first planar portion is disposed closer to a subject than the barrier front cover. The first opening portion is formed smaller than the second opening portion.

Abstract: A method for manufacturing camera modules for use in portable electronic devices, such as mobile phones, is provided. More specifically, in camera modules utilizing lens motion type auto focus actuation, permanent magnets associated with voice coil motors utilized in the auto focus system, generate magnetic flux that can interfere with the process of bonding image sensors to camera modules if the permanent magnets of different voice coil motors are positioned too closely. Incorporating a magnetic shield into the manufacturing process to restrain or control the magnetic flux generated by the permanent magnets permits voice coil motors to be positioned closer together during the manufacturing process. This increases manufacturing throughput and reduces cost.

Abstract: A lens barrel including a subject-side lens guided by guide bars. The lens barrel has a first guide shaft disposed within a cylindrical fixed cylinder and oriented axially along the fixed cylinder; a second guide shaft disposed outside the fixed cylinder and oriented axially; a first holding member that holds a first lens and moves along the first guide shaft; and a second holding member that holds a second lens positioned on a subject side of the first lens and moves along the second guide shaft.

Abstract: A movable and replaceable lens structure for electronic devices has a lens-mounting body mounted on and electrically connected with a electronic device, and a movable lens module mounted on the lens-mounting body and having a movable mechanism mounted on the lens-mounting body or a housing of the electronic device. The movable lens module has a movable mechanism mounted on the lens-mounting body or the housing of the electronic device. A lens is connected with the movable mechanism. An operation part is connected with the movable mechanism. The movable mechanism can be operated to move along a straight line, rotate or pivot, thereby moving the lens to align with an optical axis of the movable lens module and varying the focus of field of view of the movable lens module. Accordingly, the lens with different picture-taking effect can be provided, such as a wide-angle, microscopic or telescopic lens.

Abstract: The present invention provides a lens device, a drive method, a recording medium, and an image capturing device. According to an aspect of the present invention, in an one-sided drive mode which allows the lens to move beyond a target position, and then to move in a reverse direction and stop at the target position, the control part controls the lens on the basis of the brake ON/OFF information so that when the lens is temporarily stopped, braking by the brake part is not applied, and only when the lens is stopped at a final target position, braking by the brake part is applied.

Abstract: A lens device according to an embodiment of the presently disclosed subject matter includes a first frame body where a first screw is formed, a second frame body where a second screw that can be screwed to the first screw is formed, the second frame body having a predetermined area of an outer perimeter where asperities are formed, an extender lens including a front optical system supported by the first frame body and a rear optical system supported by the second frame body, and a cylinder accommodating the first and second frame bodies and having formed thereon an opening for engaging a stick-shaped member inserted from the opening with the asperities from a diagonal direction when the first frame body is inserted in an optical axis.

Abstract: The object of the present invention is to provide a driving mechanism which is a higher powered motor that can be used even when an installation space is limited by reducing a space required for installation of the motor as a motive power of a driving mechanism, and which prevents the influences of vibration and heat generation in the operation. To achieve the object, an oscillation motor unit, an oscillation motor and a lens driving device are employed in which the vibrator, a push mechanism pushing the vibrator in a specific direction to transmit the motive power of the vibrator in which a vibrator is made vibrate and convert the vibration energy to a motive power transmitted are included, wherein a first base member for setting the vibrator and the push mechanism is set at the position where the first base member is sandwiched between the vibrator and the push mechanism.

Abstract: A lens barrel and a lens unit each include a lens drive operation member that drives a lens holding member holding a movable lens group, in an axial direction by a rotation operation of a rotating member. This lens drive operation member has a body disposed so as to be rotatable about an axis of a fixed barrel and so as not to be movable in the axial direction and connected to the rotating member by a connecting portion, and the connecting portion includes at least two connecting members, that is, a first connecting member formed integrally with the body, and a second connecting member formed separately from the body.

Abstract: Provided is a linear motor comprising a magnet including a first region polarized to have a magnetic pattern for driving and a second region polarized to have a magnetic pattern for position detection, the first and second regions being arranged linearly in a direction of the driving; a drive coil that is provided opposite the first region and generates a drive force exerted on the magnet in the direction of the driving; a magnetic sensor arranged opposite the second region; and a base member that supports the magnet, the drive coil, and the magnetic sensor such that the magnet can be moved relative to the drive coil and the magnetic sensor in the driving direction.

Abstract: The invention relates to an objective lens mount (39) with specimen protection and crush protection for objective lenses (4) on a microscope, consisting of an outer objective lens collar (1) having a unit (15) for mounting on an interface of the microscope, preferably on a microscope stand, and a safety element (22) arranged spring mounted and axially movable in the objective lens collar (1), which safety element contains the objective lens (4). According to the invention, in order to maintain a definable stand-off distance between the front lens (5) of the objective lens (4) and the safety element (22) in the objective lens mount (39), a sensor (6) is provided, coupled to a control unit.

Abstract: A lens barrel of the disclosure includes: a first frame which has a lens and an adhesive reservoir which is provided at a position projecting from the lens in a radial direction of the lens with an indentation formed between the lens and the adhesive reservoir, the first frame holding the lens by injection of an adhesive into the adhesive reservoir; and a second frame which is movable relative to the first frame in an optical axis direction of the lens, the second frame having a through hole formed at a place corresponding to the adhesive reservoir as viewed in the optical axis direction.

Abstract: A voice coil motor for driving a lens group includes a housing, a first cover, a second cover, a movable member, and a plurality of magnets. The housing is a hollow and includes a top plate and four sidewalls protruding from the top plate. The movable member is movably received in a space defined by the housing and the first and second covers, and includes a barrel for receiving and being connected to the lens group, and a coil arranged around the barrel. The magnets are arranged between the housing and the movable member, stayed in contact with the sidewalls, and drive the movable member and the lens group to move in the housing when a current is supplied to the coil.

Abstract: An interchangeable lens unit comprises a lens housing, a cam frame, and a zoom drive unit. The zoom drive unit is mounted to the lens housing, and rotationally drives the cam frame with respect to the lens housing. The lens housing has a substantially cylindrical main body component and a gear component that is disposed on the inner peripheral face of the main body component and to which the drive force of the zoom drive unit is transmitted. The gear component is disposed substantially in the middle of the main body component in the optical axis direction.

Abstract: An apparatus includes a driver configured to rotate a lead screw, a rack unit including a mated portion mated with the lead screw, the rack unit being coupled with the holder and configured to move along the lead screw as the lead screw is rotated by the driver, a first elastic member configured to force the mated portion against the lead screw with a first force F1, an opposed cog arranged opposite to the mated portion with respect to the lead screw and displaceable relative to the mated portion, and a second elastic unit configured force the opposed cog unit with a second force F2 toward the lead screw. F1<F2<F3 is satisfied where a force containing F3 is a component that opposes to F2, at least one of the mated portion and the lead screw getting damaged when F3 is applied between the mated portion and the lead screw.