Abstract: An interchangeable lens to be detachably attached to a camera body, that includes a holding unit at which a plurality of contacts is arranged, the interchangeable lens includes: a first communication contact system arranged at the holding unit; and a second communication contact system different from the first communication contact system, arranged at the holding unit at a position different from a position at which the first communication contact system is arranged. The fourth contact is arranged at a position closer to the second communication contact system than the first contact, the second contact, and the third contact are, and the seventh contact and the eighth contact are arranged at positions closer to the first communication contact system than the fifth contact and the sixth contact are.

Abstract: The invention relates to an optical mounting comprising a stationary outer mounting and an inner mounting part embodied to receive an optical element. The aim of the invention is to enlarge the adjustment path in the direction of the optical axis of the optical element that is to be mounted, and as a result, obtaining high stability and rigidity that is perpendicular to the optical axis. Also, the invention aims at keeping the space requirements and the manufacturing and mounting costs as low as possible.

Abstract: A holder for optical components includes a two-part holder housing that forms an essentially ring-shaped enclosure surrounding an optical component; in addition the two housing parts have different thermal expansion coefficients. To create a holder for optical components that is both simple in structure and ensures a low-tension and insulated enclosure of the optical component, it is proposed with the invention that one housing part should be configured as a ring that surrounds the optical component and on whose housing interior close to the optical component a groove should be configured that surrounds and encloses the optical component and serves as a receptacle for the second housing part, which is configured as a tension ring.

Abstract: The invention relates to an optical lens holder (1) comprising a supporting means (2) and a first and a second arm (10, 20, 30) defining a lens holder general plane, first and second arms being relatively movable with regards to each other and each arm having spaced apart first and second end portions (10a, 20a, 30a, 10c, 20c, 30c) and an intermediate portion (10b, 20b, 30b), the arms being mounted on the supporting means through their first end portions and the second end portions of each arm comprising an optical lens accommodating means (21, 22) facing each other, whereby an optical lens (3) can be maintained within the accommodating means of the first and second arms with its optical axis orthogonal to the general plane of the lens holder through at least one, preferably one or two contact points between the lens periphery and each of the first and second lens accommodating means, wherein at least the second end portion of each arm comprises a material having a dielectric constant at 1 MHz equal to or hig

Abstract: A lens device is capable of simply adjusting the tilt of a lens. A lens holding frame in which a fulcrum portion is tiltably supported by a fulcrum supporting portion is fixed to a lens barrel by tightening a first screw to a first connection portion and a second screw to a second connection portion. The first screw is arranged at a position that is rotated 90° from the fulcrum supporting portion in the clockwise direction, and the second screw is arranged at a position that is rotated 90° from the fulcrum supporting portion in the counterclockwise direction. The first screw is tightened to tilt the lens holding frame about the X-axis, and the second screw is tightened to tilt the lens holding frame about the Y-axis. The amount of tightening of the first and second screws is adjusted to adjust the tilt of a first lens.

Abstract: A camera module includes a lens barrel, a lens holder, and a focusing spring. The lens barrel includes an operation plate and a first body, and the outer diameter of the operation plate exceeds that of the first body, thereby a staging surface is formed facing the first body. The first body includes an outer surface, and defines an external thread on the outer surface. The lens holder includes a second body, and defining a second receiving hole therethrough. The second body includes an upper surface and an inner surface, and defines an internal thread on the inner surface. The lens barrel is received in the second receiving hole, and the external thread of the lens barrel is screwed and meshed with the internal thread of the lens holder. The focusing spring is compressively interposed between the staging surface and the upper surface.

Abstract: According to an aspect of the invention, a lens barrel having an eccentricity adjusting mechanism includes a lens frame, a pressing ring, an engaging part, a tool insertion hole, an engaging face, a non-engaging face. The lens frame holds a lens for an optical system of the lens barrel. The pressing ring is screw-connected to a fixed barrel of the lens barrel. A part of the lens frame is disposed between the pressing ring and the fixed barrel so that the lens frame is supported to be rotatable around the optical axis. The engaging part is formed on an outer circumferential face of the lens frame, protrudes from the outer circumferential face of the lens frame, the engaging part including a plurality of engaging parts formed in the circumferential direction of the outer circumferential face of the lens frame with predetermined intervals.

Abstract: An optical system with precision positioning of optical devices is disclosed generally comprising an optical device and a carrier for the optical device, where the carrier has substantially parallel first and second pivot axes and a third pivot axis that is substantially orthogonal to the first and second pivot axes that allows the optical device to be moved in three substantially orthogonal directions. In certain embodiments, the pivot axes are formed from hinges, which may be spring loaded or biased by a tensioning element running approximately forty five degrees to all three pivot axes. In some embodiments, the carrier is supported at least partly independently from an outer housing in order to insulate it from vibrations caused by vibrating devices mounted to the housing.

Abstract: A lens driving device for use with a lens to photograph or image an object to be photographed or imaged may include a moving member holding the lens and made movable in the direction of an optical axis, and a supporting member for supporting the moving member through a spring member, wherein the lens is displaced and driven in the optical axis direction thereby to focus the image of the object. The supporting member may include a yoke having a cover portion having an entrance window for introducing the reflected light from the object into the lens, and a case portion for covering the outer circumference of the moving member. The cover portion and the case portion are formed integrally with each other.

Abstract: An objective lens assembly for night vision goggles including an objective lens cell having a threaded portion, an optical bench having a mating threaded portion for receiving the objective lens cell, and a snap-ring washer for reducing backlash between the objective lens cell and the optical bench. The objective lens cell includes a first wall radially extending away from an axial neck portion, the optical bench includes a second wall radially extending toward the axial neck portion and oriented substantially parallel to the first wall, and the snap-ring washer circumferentially surrounds the axial neck portion of the objective lens cell. The biasing element is configured for a relaxed mode of operation and a compressed mode of operation. In the relaxed mode, the snap-ring washer is inactive, and in the compressed mode, the snap-ring washer reduces backlash between the lens cell and the optical bench.

Abstract: A VCM (voice coil motor) is disclosed, the VCM including: a rotor including a lens-fixing hollow holed bobbin including a coil discharge unit formed from a peripheral upper end to a peripheral bottom end facing the peripheral upper end, and a coil block arranged at a periphery of the bobbin and including a cylindrically wound coil; a stator including a magnet facing the coil block and a yoke fixing the magnet; a case including a bottom case arrange with the bobbin and an upper case coupled to the bottom case and having an opening at a portion corresponding the bobbin; and an elastic member elastically supporting an upper end of the bobbin and a bottom end facing the upper end of the bobbin, wherein a distal end of the coil arranged at an upper end of the coil block employs the coil discharge unit to be discharged to a bottom end of the bobbin.

Abstract: A driving device for an optical device comprising: an operation ring 3 to which a driving force from an operation member 4 is transmitted; a driving ring 9 to which a driving force from an actuator 20 is transmitted; an output ring 5 which transmits a driving force to an optical component 8a; and a planetary roller 6 which slides on one end face 3b of said operation ring 3 and one end face 9b of said driving ring 9, said planetary roller 6 being rotatably attached to said output ring 5 so as to selectively transmit the driving force from any one of said operation ring 3 and said driving ring 9 to said output ring 5. A sliding face 3b of said operation ring 3 with said planetary roller 6 consists of a lower friction member than the operation ring body.

Abstract: Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (?) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.

Abstract: Provided is an optical apparatus including: two magnets which are constituent components of drive member for moving a lens holder (21); three balls (25); and two bias members (23) for applying biases such that hook portions disposed in one and the other ends of each of the two bias members are engaged with a base member (28) and the lens holder, respectively, and the three balls are held between the base member and the lens holder. Two magnets (22A and 22B), the three balls, and the two bias members are arranged so that a center of gravity within a plane of the base member, a lens, and the two magnets is positioned in a triangle formed by the three balls, and a line segment within a plane formed by the two bias members steps over two sides of the triangle.

Abstract: The present invention relates to a positioning apparatus (10) of a positioning unit for positioning an optical device of the positioning unit comprising at least one optical element in the ray path of a microscope in front of an eye to be observed, wherein the positioning apparatus comprises a carrier device (11) for coupling the positioning apparatus to the microscope and a holding apparatus (12) for holding the optical element, whereby the holding apparatus comprises holding devices (20) for connection of the optical device to the holding apparatus which are configured in such a manner that a distance space (24) is formed between the optical device and the holding apparatus.

Abstract: An optical module includes a first optics group, a second optics group, and an image sensor, wherein the first optics group and second optics group are configured to provide an image having a focus and a magnification to the image sensor. In some embodiments of the present invention, a first optics assembly includes a first optics group coupled to a threaded portion of a first lead screw so that rotation of the first lead screw results in translation of the first optics group along an axis of the first lead screw, a first actuator for rotating the first lead screw; and a first sensing target configured to permit detection of rotation of the first lead screw.

Abstract: A lens barrel includes a lens holding frame configured to hold a lens and being provided with a cam follower, a guide tube engaging with the lens holding frame and being configured to rectilinearly guide the lens holding frame in an optical axis direction, and a cam tube engaging with the cam follower and being provided with a cam slot which engages with the cam follower, the cam tube being configured to rotate about the optical axis thereby to move the lens holding member in the optical axis direction, wherein the cam slot has a locus including a flat portion orthogonal to the optical axis and a lift portion not orthogonal to the optical axis, wherein the flat portion has a surface perpendicular to the optical axis, and wherein the cam follower has a surface parallel to the perpendicular surface.

Abstract: The present invention provides a supporting device that supports an optical element, comprising: a first supporting member that is fixed to an outer circumference of the optical element; a plurality of members that is connected to an outer circumference of the first supporting member; and a second supporting member that supports the first supporting member via the plurality of members, wherein each of the plurality of members is configured such that the a rigidity thereof in a first direction inclined relative to a direction orthogonal to an optical axis of the optical element in a plane including the optical axis is lower than a rigidity thereof in each of two directions that are orthogonal to the first direction and that are orthogonal to each other.

Abstract: A lens barrel according to an embodiment of the present invention includes a fixed barrel, a movable member that is movable relative to the fixed barrel, a flexible circuit board that is bent in a U-shape and hangs between the fixed barrel and the movable member, and a flexible circuit board guide. The flexible circuit board guide secures one side of the flexible circuit board that is continuous with the bent portion of the flexible circuit board to the fixed barrel while the one side of the flexible circuit board extends in a moving direction of the movable member.

Abstract: The present invention provides optical systems, devices and methods which utilize one or more electroactive polymer actuators to adjust an optical parameter of the optical device or system.

Abstract: A lens barrel includes a lens frame which is movable while supporting a lens; and a restriction portion configured to restrict movement of the lens frame by contacting the lens frame. The lens frame and the restriction portion contact each other at a plurality of points.

Abstract: An apparatus for assembling a lens module, is provided. The lens module includes a lens and a lens holder for receiving the lens. The lens holder has a through hole and a retainer formed in the through hole. The apparatus includes a base for supporting the lens holder, and a supporter formed on the base, for extending through the through hole of the lens holder and supporting the lens thereon. A height of the supporter is greater than a depth of the through hole of the lens holder. The supporter is movable relative to and away from the lens holder so as to place the lens on the retainer in the through hole of the base.

Abstract: A camera alignment system that can enable alignment in at least one of three planes and about an axis of at least one of the planes. An alignment mount can mate to a camera and lens. The alignment mount can comprise a mechanism to adjust the camera relative to the lens to that an image plane of the camera aligns with an image plane of the lens in a predetermined orientation. One predetermined orientation can be that the image plane of the camera being parallel to the image plane of the lens.

Abstract: An adjustable optical mount embodiment includes a first plate configured to mount an optical element and a second plate disposed adjacent the first plate with a pivot point between the plates. At least one adjustable threaded member has a contact end in contact with a rear surface of the first plate and a threaded outer surface in threaded engagement with a threaded bore of the second plate. A lock collar having a threaded bore in threaded engagement with a threaded outer surface of the adjustable threaded member which extends from a rear surface of the second plate has a torqueable surface disposed at an adjustment end which is configured to be engaged for the application of torque from a rearward position relative to the adjustable optical mount.

Abstract: A laser welding apparatus and method for easily adjusting a laser focusing position according to a distance from a laser irradiating device to a laser irradiating point on a work piece, or a welding point. A post-collimation laser diameter is measured when the laser emitting end has an optimal laser diameter on the work piece with respect to the distance from the laser processing head to the work piece. Corresponding data is stored with the above distance and the post-collimation laser diameter corresponding to each other. During welding, a diameter of the laser beam passing through a collimate lens is measured by a laser diameter measuring device. The post-collimation laser diameter is adjusted to be an optimal value according to the corresponding data.

Abstract: Provided is a zoom lens including: a focus lens unit which moves during focusing; and a magnification-varying lens unit which moves during zooming, in which when the magnification-varying lens unit is moved in a direction in which a depth of focus deepens, a focus operation using the focus lens unit is stopped.

Abstract: A lens assembly has: optical members including lenses and spacing rings; and a ceramic lens frame into which the optical members are inserted. A solid lubricant is applied to at least one of a part of the inner peripheral surface of the ceramic lens frame, which part is to be in contact with at least the outer peripheral surfaces of the optical members, and the outer peripheral surfaces of the optical members. Subsequently, the lenses and spacing rings are alternately inserted into the ceramic lens frame and then pressed by a pressing ring.

Abstract: A lens assembly includes a barrel having an object-side opening and an image-forming-side opening. The barrel further has a positioning section that positions an image-forming-side surface of a lens by having line contact around an optical axis at a center. The positioning section is disposed at a position that is closer to an object side than the image-forming-side opening of the barrel is. The barrel also has an image-forming section that extends from the positioning section to a center of the optical axis along the image-forming-side surface of the lens and forms an edge of the image-forming-side opening of the barrel.

Abstract: A drive module and an electronic apparatus which can detect inclination of a driven member with high degree of accuracy are provided. A module lower panel and an intermediate member are formed with a plurality of notched portions which expose the inner peripheral portion of a lower leaf spring when viewing a drive unit from below.

Abstract: An optical apparatus includes a second member 6 supporting a first member 4 so as to be movable in an optical axis direction and biasing devices 401 and 406 having biasing force acting on the first member. Two first balls 403a and 403b are arranged at positions away from each other in the optical axis direction and a second ball 403c is arranged at a phase different from that of the first balls. The first and second members include guide sections 4a and 6a engaging with the first balls so as to permit a rolling motion of the first balls in the optical axis direction and prevent a displacement of the first member in a different direction and a rotation preventing section permitting a rolling motion of the second ball in the optical axis direction and preventing a rotation of the first member around the guide section.

Abstract: A lens moving frame according to an embodiment of the invention includes a holder portion. The holder portion includes: wall portions having guide holes formed therein; partition walls into which a guide bar is inserted and which are provided near the corresponding wall portions; and lubricant reservoir portions that are provided between the partition walls and the wall portions and have a lubricant filled and stored therein. The lubricant stored in the lubricant reservoir portion is adhered to the guide bar disposed between the partition wall and the wall portion. When the lens moving frame is moved along the guide bar, an extra lubricant is scraped off from the guide bar by the guide holes and opening portions of the partition walls and then stored in the lubricant reservoir portions.

Abstract: An optical device includes a lens module, a case structure and an optical adjusting mechanism. The optical adjusting mechanism includes a first adjusting member, a second adjusting member and an elastic element. The first adjusting member includes a first interference transmission structure. The second adjusting member is movably connected with the case structure, and includes a second interference transmission structure. In response to the movement of the lens module, the elastic element elastically urges against the second adjusting member so that the second adjusting member is movable within a predetermined distance range, and the second interference transmission structure presses against and engages with the first interference transmission structure. Once the second adjusting member is moved, the first adjusting member is synchronously moved so that optical parameters of the lens module are adjusted through the first adjusting member.

Abstract: A lens apparatus includes a first lens holding member configured to hold a lens, and an actuator configured to move the first lens holder in an optical axis direction. The lens apparatus transfers to a retracted state by moving the first lens holding member to a retracted position via the actuator from an image picking-up state. The lens apparatus further includes a stopper configured to move in a direction different from the optical axis direction between a first position at which the stopper restricts a movement of the first lens holding member and a second position off the first position, and a driving member configured to move the stopper from the second position to the first position relative to the first lens holding member that has moved to the retreated position.

Abstract: An electronic device including a first module, a second module, at least one first spacer, and at least one second spacer is provided. The first module has a carrying surface. The second module is slidably disposed on the carrying surface and has a bottom surface opposite to the carrying surface. The first spacer is fixed on the carrying surface and suitable for being slid on the bottom surface. The second spacer is fixed on the bottom surface and suitable for being slid on the carrying surface. The first spacer and the second spacer are always kept within an overlapping region between the bottom surface and the carrying surface.

Abstract: A lens apparatus which has a small size but allows a higher magnification and an image-pickup apparatus including the lens apparatus are disclosed. The lens apparatus provides a variable magnification by moving a first lens and a second lens placed closer to an image plane than the first lens in the direction of an optical axis. The lens apparatus includes a first driving member which is rotated around the optical axis to move the first lens in the optical axis direction, a second driving member which moves the second lens by itself in the optical axis direction, and a driving mechanism which at least drives the rotation of the first driving member. The second driving member is moved in the optical axis direction relative to the first driving member by the rotation of the first driving member.

Abstract: A lens drive device may include a movable body having a lens and a coil, a support body movably supporting the movable body, a magnetic drive mechanism having a magnet for driving the movable body together with the coil, a restricting member for restricting movement of the movable body due to an electromagnetic force generated when an electric current is supplied to the coil, a magnetic member disposed in the movable body to be magnetically attracted by the magnet. In a non-energized state where the coil is not energized, following relationships are satisfied: W>F1, W>F2, and W<F1+F2. wherein a force with which the restricting member urges the movable body toward a non-energized position is “F1”; a force in the optical axis direction with which the magnetic member is attracted by the magnet is “F2”; and a weight of the entire movable body is “W”.

Abstract: A lens driving device has a carrier, a coil, an upper spring, a lower spring, a yoke, a magnet, and a lower member. The carrier is cylindrical and has a hollow part along a vertical direction so that a lens can be carried. The coil is fixed to an outer peripheral surface of the carrier. The upper spring is arranged over the carrier, and fixed to the yoke. The lower spring is arranged below the carrier. The yoke is formed into a box shape having a side wall and an opening on the lower side, and arranged around the carrier. The magnet is arranged in the yoke so as to be opposed to the coil. The lower member is arranged below the yoke. The lower member has a projection part connected to the yoke. The projection part is inserted between an inner surface of the side wall of the yoke and an outer surface of the magnet and connected to the yoke. Thus, the yoke and the lower member can be connected such that space for the magnet to be arranged in the yoke is less affected.

Abstract: A lens barrel including a telescopic cylinder configured to be accommodated within a fixed frame; a plurality of lens groups configured to be retained in the telescopic cylinder; a lens driving device configured to drive the plurality of lens groups along a longitudinal axis of the telescopic cylinder between a collapsed position in which at least one portion of the plurality of lens groups is stored in the fixed frame and an extended position in which the at least one portion of the plurality of lens groups is extended out of the fixed frame; and a retractable lens group configured to be retracted into the fixed frame through an opening in a wall of the fixed frame when the telescopic cylinder is in the extended position.

Abstract: A lens barrel, an image pickup apparatus, a lens drive method and a method of producing a shape memory alloy used for the drive device are disclosed. A drive device includes: a lens group for guiding light from a subject; a shape memory alloy adopted to be deformed by an electricity supplied to the shape memory alloy, for moving the lens group in a direction of an optical axis; and electricity-supply controlling means for controlling an amount of the electricity supplied to the shape memory alloy; and a detecting means for detecting whether a movement of the lens group starts or not. In the drive device, a movement amount of the lens group in the direction of the optical axis is controlled based on the amount of electricity supplied when the detecting means detects the movement of the lens group.

Abstract: Disclosed are, inter alia, optical components that include an optical element (e.g., mirror) and at least three active-isolation mounts mounting the optical element to a frame (e.g., optical barrel or optical frame). An active-isolation mount has a non-contacting actuator connecting a respective location on the optical element to the frame and provides movability of the respective location relative to the frame in at least one direction. At least one displacement sensor is associated with each respective location on the optical element. The displacement sensors are sensitive to displacements of the respective locations in at least one respective direction and reference the displacements to an absolute reference. The actuators and sensors are connected to a servo control loop to provide feedback control.

Abstract: In the lens driving apparatus having a sleeve, a support body (such as a yoke) that supports the sleeve via a spring member), coils attached to the sleeve, and magnets attached to the support body, the support body is provided with a yoke and a cover portion, the yoke being formed with a light-entrance window for collecting light reflected from a subject and the cover portion being attached to the inside of the light-entrance window; the cover portion, the spring member, and the magnets are arranged so that they are layered in this order from the light-entrance window, and the cover portion is formed of a non-magnetic material.

Abstract: An exemplary lens module includes a lens barrel, a first lens, and a second lens. The lens barrel includes an accommodating cavity defined therein. The first lens is received in the accommodating cavity of the lens barrel. The first lens has a first adjusting notch defined at a periphery thereof. The second lens is received in the accommodating cavity of the lens barrel and adjacent to the first lens. The second lens has a second adjusting notch defined at a periphery thereof. The second adjusting notch communicates with the first adjusting notch.

Abstract: An optical-element supporting device includes a first supporting unit and a second supporting unit configured to support an optical element. The first and second supporting units are spaced apart. The first and second supporting units support the optical element so as to constrain translational motion of the optical element along each of three axial directions and rotation of the optical element about each of the three axes. Where n is the number of axes constrained by the first supporting unit among the translational motion of the optical element along each of the three axial directions and the rotation of the optical element about each of the three axes, and m is the number of axes constrained by the second supporting unit among the translational motion of the optical element along each of the three axial directions and the rotation of the optical element about each of the three axes, n+m=6 is satisfied.

Abstract: A flexible lens may be actuated to change its focal length by a deployable lens actuator. The lens actuator translates a rotational motion of an outer frame into a linear radial motion of a plurality of linear elements. The linear elements have fixed pins, which may be slidably coupled to cam pockets in the outer frame. The cam pockets have a gradually varying distance from the center of the outer frame. The rotation of the outer frame thus drives the cam pockets to slide about the pins, thereby causing radial motions of the linear elements. The linear elements stretch a flexible lens, thereby changing a curvature of the flexible lens.

Abstract: Provided is a lens barrel comprising a cylinder that is provided on a base and that extends in a direction of the axis of the cylinder; a guide axle that slides in the direction of the axis of the cylinder along an inner peripheral surface of the cylinder; a first holding component that holds a first lens and is fixed to the guide axle; and a second holding component that holds a second lens, which is different from the first lens, and slides in the direction of the axis of the cylinder along an outer peripheral surface of the cylinder.

Abstract: An adjustable optical mount embodiment includes a first plate configured to mount an optical element and a second plate disposed adjacent the first plate with a pivot point between the plates. At least one adjustable threaded member has a contact end in contact with a rear surface of the first plate and a threaded outer surface in threaded engagement with a threaded bore of the second plate. A lock collar having a threaded bore in threaded engagement with a threaded outer surface of the adjustable threaded member which extends from a rear surface of the second plate has a torqueable surface disposed at an adjustment end which is configured to be engaged for the application of torque from a rearward position relative to the adjustable optical mount.

Abstract: A lens tube includes a standard member, a lens, a guide, and a pushing member. The standard member has a standard surface via which the standard member is to be mounted to a camera main body. The lens retainer retains at least one lens and is connected to the standard member movably along an optical axis of the at least one lens. The guide is provided facing the lens retainer in a radial direction of the at least one lens to guide the lens retainer along the optical axis. The pushing member pushes the lens retainer and the guide in opposite directions.

Abstract: It is intended to carry out a focusing operation suitably in each case of automatic focusing and manual focus adjustment. Therefore, in the present invention, there is provided a first focus ring 1 movable between a first position and a second position on an optical axis. Further, a first rotation-angle detection unit detecting a rotation amount of the first focus ring 1 at the first position, a second focus ring 2 coupled to the first focus ring 1 when the first focus ring 1 is at the first position, and a second rotation-angle detection unit detecting a rotation amount of the second focus ring 2 are provided. When the first focus ring 1 is at the first position, a focus lens is driven based on the rotation amount detected by the first rotation-angle detection unit, and when the first focus ring 1 is at the second position, the focus lens is driven based on the rotation amount detected by the second rotation-angle detection unit.

Abstract: Provided is a lens driving module including a housing that has a lens barrel housing portion provided therein; a lens barrel that has a bearing contact portion and a guide portion formed on the outer circumferential surface thereof and is mounted in the lens barrel housing portion of the housing; a piezoelectric motor that is mounted in one outer corner of the housing, which corresponds to the guide portion of the lens barrel, among the outer corners of the housing, and provides a driving force to the lens barrel; and a power connection member that is bent so as to cover the piezoelectric motor and the outer circumferential surface of the housing and is coupled to the housing.

Abstract: A collapsible lens barrel having a low-profile size and a camera applied with the collapsible lens barrel. The lens barrel includes a first retractable lens-retaining frame and a second retractable lens-retaining frame for retaining at least one of a plurality of lens groups and being retracted to a position outer than an inner radius of a movable lens cone in the collapsed state, respectively; and a first retractable lens-moving member and a second retractable lens-moving member. At least one of the first and second retractable lens-retaining frames is retained movable relative to the respective retractable lens-moving member along an optical axis direction in the collapsed state.