Abstract: An electromagnetic drive includes a drive plate disposed in a magnetic field. The drive plate includes a non-conductive medium with a first plurality of linear conductive elements arranged parallel to a first axis. The first plurality of linear conductive elements connects first and second electrical terminals supported by the non-conductive medium. The drive plate may be driven in the magnetic field along a second axis that is substantially perpendicular to the first axis when an electrical current of sufficient magnitude is passed through the first plurality of linear conductive elements.

Abstract: A lens module includes a lens barrel, a lens holder, and an extension member. The lens barrel is received in the lens holder. The lens holder includes at least one first guiding portion. The extension member defines a receiving through hole and includes at least one second guiding portion corresponding to the at least one first guiding portion. The lens holder is fixedly received in the receiving through hole by engagement between the at least one first guiding portion and the at least one second guiding portion.

Abstract: A moveable assembly includes a frame, resilient suspension arms made of carbon nanotube bundles, and a moveable member. The frame is disposed around the moveable member. Each of the resilient suspension arms includes a first end fixed to the frame, and a second end connected to the moveable member. The resilient suspension arms are centro-symmetrically arranged relative to the moveable member such that the moveable member is capable of stably moving along a predetermined direction driven by an external force.

Abstract: The present application relates to an insert (18) for holding an optical system (90, 92), in particular a focusing optics, in a laser machining head (10) for machining a workpiece with a laser beam, it being possible to displace the optical system (90, 92) relative to the insert (18) via adjusting means, characterized in that the adjusting means for displacing the optical system (90, 92) in the longitudinal direction of the laser beam comprises a linear adjusting device (64, 66, 68) with a synchronous linear motor (68) as well as to a laser machining head (10) for machining a workpiece by means of a laser beam, having a housing (14) in which the insert (18) according to one of the preceding claims can be introduced laterally.

Abstract: A lens driving device has a stationary part including an iron shell, a movable part including a lens holder for holding a lens therein, and a driving part for moving the movable part relative to the stationary part. The driving part includes a plurality of magnets fixed to the iron shell, and at least one coil fixed to the lens holder. The magnets are divided into at least two layers stacked in the direction of the optical axis of the lens and a plurality of groups along the circumferential direction of the lens. Each magnet is polarized in the radial direction of the lens. The polarities of two adjacent stacked magnetic poles in the same group are opposite to each other so as to cooperatively form a magnetic circuit in a plane parallel to the optical axis direction. The coil includes an axis about which the coil is wound. The coil axis is perpendicular to the optical axis. The coil has an upper part facing one layer of magnets and a lower part facing the other layer of magnets.

Abstract: An apparatus for driving a lens by electromagnetic driving force includes a frame, a barrel, a lens holder, a lens, a kicker, electromagnets and a resilient element. The barrel rotably mounted in the frame includes a first linkage structure. The lens holder includes a second linkage structure and is mounted on the barrel through the first and second linkage structures. The lens is coupled into the lens holder, and the kicker is mounted on an external wall of the barrel, and the electromagnets are mounted at the frame and the kicker respectively. The resilient element is connected to the barrel and the frame. The barrel can be pushed by a repulsion or attraction of a magnetic field produced by electrically conducting the electromagnets, and the first and second linking structures drive the lens holder to move from a first position to a second position.

Abstract: A lens adjusting device (100) includes an optical module (10) and a driver module (20). The driver module includes a seat (22), at least one magnet (24) and at least one winding (26). The optical module is rotatably fixed on the seat. The magnet is fixed on the optical module. The magnet and the winding are positioned at one side of the optical module. A variable current is applied to the winding, and a magnetic field is formed at ends of the winding. The magnetic forces between the magnetic field and the magnet drives the optical module to rotate.

Abstract: A lens actuation device for an optical system includes a housing, a carrier at least partially installed in the housing, and a plurality of transducers arranged around the carrier in the housing. All the transducers are coupled with the mount, and at least one transducer includes at least one magnet and at least one coil. At least one transducer includes at least one yoke. All the transducers when powered on may generate independent or consistent movement to cause the mount to make linear movement, rotation, or both relative to the housing. An optical system adopting the lens actuation device and a camera using the same are also presented. The device of the present invention uses the transducers to drive the carrier, such that the lens set is driven to make linear movement, rotation, or both, thereby achieving the flexible manipulation of the lens.

Abstract: A camera module includes a barrel unit, an image sensing unit, and a voice coil motor. The image sensing unit has an image sensing surface. The barrel unit defines an optical axis. A first projection boundary is formed on the projection plane by projecting a boundary of the image sensing surface along the optical axis. A second projection boundary is formed on the projection plane by projecting a boundary of the receiving space of the movable part along the optical axis. The voice coil motor includes a hollow fixed part, a movable part, and a base. The base includes a shielding part and a through hole defined in the shielding part. A third projection boundary is formed on the projection plane by projecting a boundary of the through hole of the shielding part. The third projection boundary lies between the first and the second boundaries.

Abstract: It is an object of the present invention to provide an image blur correcting device having a dimension reduced in any one direction perpendicular to the optical axis of the incident light, and a camera equipped with this device. The image blur correcting device 300 includes a pitching movement frame 205, a pitching guide mechanism 304, a yawing guide mechanism 306, a pitching direction electromagnetic actuator 312, and a yawing direction electromagnetic actuator 314. The pitching movement frame 205 supports a third lens group G3 for performing image blur correction. The pitching guide mechanism 304 guides the pitching movement frame 205 in the pitching direction. The yawing guide mechanism 306 guides the pitching movement frame 205 in the yawing direction. The electromagnetic actuator 312 drives the pitching movement frame 205 in the pitching direction. The electromagnetic actuator 314 drives the pitching movement frame 205 in the yawing direction.

Abstract: A camera module includes a rear lens barrel, a front lens barrel assembled to the rear lens barrel, the front lens barrel and the rear lens barrel together forming a housing space, a lens holder that holds an imaging optical system and is housed in the housing space, a guiding mechanism that movably supports the lens holder along the optical axis of the imaging optical system, and a driving unit that moves the lens holder along the optical axis of the imaging optical system, the driving unit including a magnet provided in the lens holder and a coil that faces the magnet. The rear lens barrel has a bottom wall that faces the housing space. The coil includes first and second coils disposed in the rear lens barrel on opposite sides of the optical axis in the housing space.

Abstract: A lens stage for use in a scanning system is provided. In certain embodiments, the lens stage comprises: a) a support comprising a first rail and a second rail, in which the first rail and the second rail are mounted to the support in parallel; and b) a linearly moveable lens assembly comprising: i) a voice coil comprising a moving coil that moves in a direction parallel to the rails; ii) a lens; iii) a bracket that is attached to: a) the moving coil and b) the lens, and moveably engaged with the rails via a set of bearing cars; and iv) means to reduce force exerted on the set of bearing cars due to thermal expansion of the moving coil.

Abstract: An objective lens actuator which drives an objective lens in a focusing direction and a tracking direction, so as to focus lights on a recording surface of an optical disc, as a recording medium of information. The objective lens actuator includes a magnet, a lens holder which is configured to hold the objective lens thereon, and four pieces of tracking coils which are disposed in a line on a side surface of the lens holder for holding the objective lens thereon, facing to the magnet.

Abstract: An imaging unit, including: a lens housing section to accommodate a lens; a lens driving section, including: a moving member which supports the lens and moves the lens in an optical axial direction, and an electro-mechanical transduction element to drive the moving member in the optical axial direction; a camera-shake preventing section which drives the lens housing section to prevent camera-shake; and a rotation regulating section to prevent the lens from rotating around an optical axis.

Abstract: An exemplary voice coil motor includes a hollow stationary magnetic field generator, a movable magnetic field generator, two elastic members, a hollow case and a base. The movable magnetic field generator is received in the stationary magnetic field generator. The two elastic members are adjacent to two ends of the stationary magnetic field generator. The case and the base serve as a package for all of the above elements. The case has a top sheet. The movable magnetic field generator has guiding posts slidably received in the top sheet, and stopping bars. The stopping bars of the movable magnetic field generator are capable of limiting the movement of the movable magnetic field generator toward the top sheet by abutting the top sheet.

Abstract: An object lens actuator can improve workability and operate with high reliability by prevention of damage to the object lens actuator and a disc and sticking of a moving part caused by an excessive movement of the moving part. In a disc drive employing the object lens actuation, stable writing/reading operation is implemented by always keeping a focal point of an object lens at a predetermined track of a recording surface of the disc even when being under the action of external perturbations such as a vertical deviation or a radial deviation of the disc, resulting in improved reliability. A solder-flux adhesion prevention gadget is provided between a substrate and a stopper receiving face, which may include a stepped stage, a partition protruding from the surface of the lens holder, or alternatively a combination of them arranged in order in the range.

Abstract: A lens driving device, comprises a base; a casing fixed to the base; a coil bracket disposed within the casing; a coil wound on the coil bracket, a spring disposed within the casing, a drive rod; and a lens holder; wherein, one end of the spring is fixed to the base; one end of the drive rod is fixed to the other end of the spring, and the other end of the drive rod extends out of the casing. The lens holder is slidably fixed to the exposed portion of the drive rod. The lens holder is held stationary with respect to the drive rod by static friction between the drive rod and the lens holder. A driving signal may be applied to the coil to move the lens holder. The driving signal has the characteristic of making the current flowing through the coil slowly increase and then rapidly decrease, or to rapidly increase and then slowly decrease. The drive current is preferably a sawtooth pulse train, with each pulse causing movement of the lens holder in the micron range or below.

Abstract: A support for a vibrating component of an optical assembly that is adjacent to a frame includes an elastomeric rod having one end that is attachable to the component. A rigid sleeve is fastened to the frame and movable relative to the frame. The sleeve has a bore that opens to an inner end of the sleeve and is sized to receive the free end of the rod therein.

Abstract: A lens barrel 11 is mounted in a collapsible imaging device 1 and includes a third lens frame 55. The third frame 55 is a lens frame to which correction lenses L5, L6, L7 are mounted and includes a shutter unit 57, a vibration compensation actuator 71, a lens frame main body 95, a focus lens frame 105, and a focus motor 115. The focus lens frame 105 is urged against the lens frame main body 95 toward the image plane side by means of a focus spring 110. A motor section 117 of the focus motor 115 is arranged in a region interposed between two multilayer printed circuit boards 77, 79 when viewed from the image plane side or the object side.

Abstract: A camera module includes a lens unit, a magnet, a stator and an elastic element. The stator includes an upper coil seat with an upper coil wound therearound and a lower coil seat with a lower coil wound therearound. The upper and the lower coils establish an induced magnetic field when electric currents are applied thereto. The induced magnetic field interacts with the magnet to generate a magnetic force driving the lens unit into a telescopic movement. The elastic element includes a plurality of ribs. Each rib includes a fixed end connected with the stator and an opposite movable end. The moveable end moves together with the lens unit with respect to the fixed end to cause the ribs to deform and generate an elastic force. The lens unit stops at a focal position when the magnetic force and the elastic force come to a balance.

Abstract: A image stabilization control circuit for an image capturing device, wherein a gyro-equalizer (24) integrates an angular velocity signal from a gyro-sensor (12) in an integration circuit (46). The integration circuit (46) is composed of a low-boost filter (LBF), and a phase delay in a target compensation region is set to a value appropriate for an integration process. Furthermore, a characteristic whereby the LBF reduces the phase delay at higher frequencies is used, compensation is applied to the excess phase delay of the angular signal in the high-frequency region brought about by the effect of the phase delay generated in the high-frequency region by the output signal of the gyro-sensor (12), and the phase delay in the high-frequency region is brought nearer to 90 degrees. This allows the accuracy of the process for determining the required displacement magnitude of a lens to be increased.

Abstract: A mechanical device for selectively inserting an optical lens filter, such as day optical filter and a night optical filter, into an optical path of a camera in accordance with light intensity and/or a signal from a user or timer. The device for switching an optical lens filter may include a series of gears and a filter bracket slidably disposed within a housing, which moves between a first position and a second position in order to selectively insert at least one optical lens filter into the optical path of the camera.

Abstract: A lens actuator is provided for moving a movable part including a lens, with respect to a fixed part in the optical axis direction of the lens. The lens actuator includes (a) a magnet disposed on the surface of the movable part facing the fixed part and magnetized in the optical axis direction, (b) a coil disposed on the surface of the fixed part facing the magnet, and (c) a pair of magnetic materials disposed on both sides of the magnet in the optical axis direction, to direct magnetic flux from the magnet toward the coil.

Abstract: A lens actuator includes a housing, a plurality of magnets, a base, and a coil-wrapped lens barrel. The housing includes a top panel, and a plurality of side panels cooperatively defining an accommodating space. The top panel defines a light passage. Each of the magnets is attached to an inner surface of each side panel. The base is fixed to an end of the housing and is opposite to the top panel. The lens barrel is resiliently mounted on the base, and is accommodated in the accommodating space.

Abstract: An electromagnetic transmission device. A guide bar connects to a fixed base and includes magnetic-permeable material and a first central height plane. A coil connects to the fixed base. A support base movably fits on the guide bar. An annular magnetic member connects to the support base and is surrounded by the coil. A magnetization direction of the annular magnetic member is perpendicular to a moving direction of the support base and annular magnetic member. The annular magnetic member includes a second central height plane. The coil interacts with the annular magnetic member to generate a first force. When moving to separate the second central height plane from the first central height plane, the annular magnetic member interacts with the guide bar to generate a second force, driving the support base and annular magnetic member to move along a direction perpendicular to the magnetization direction of the annular magnetic member.

Abstract: A lens driving device includes a lens, a moving member that supports the lens, a stationary member that movably supports the moving member, a pitch drive mechanism that drives the moving member in the pitch correction direction, and a yaw drive mechanism that drives in the yaw correction direction. The pitch drive mechanism has first and second magnets provided to the stationary member, and first and second coils provided to the moving member. The yaw drive mechanism has a third magnet provided to the stationary member, and a third coil provided to the moving member. The first and second coils are arranged on opposite sides of the lens when viewed in a third direction that is perpendicular to the pitch and yaw correction directions, and the third coil is arranged on the same side as the first coil with respect to the lens when viewed in the third direction.

Abstract: The disclosure generally relates to methods, devices, systems and components configured to position an element in a lens assembly, such as a lens assembly for microlithography, in which the element to be positioned is moved from an actual position to a target position via at least one actuator, and in which at least the positioning movement of the actuator is superimposed with an oscillating movement.

Abstract: A high reading performance is secured in an optical pickup even if magnets are miniaturized. In an optical pickup, around a lens holder which holds a lens, track coils are wound from a range of a flange of the lens to the outside in a diameter direction. The track coils become close to an optical axis of the lens and close to the center of a magnetic field formed in a unipolar face-to-face type of magnetic circuit, with the result that it is possible to displace so that the optical axis is hard to be tilted and secure a high reading accuracy. By forming a wound line shape of a focus coil and the track coils into a hexagon or the like, it is possible to make curving magnetic fluxes generated around magnetic pole surfaces hard have an affect in the unipolar face-to-face type of magnetic circuit.

Abstract: A magnetic device may include a coil wound body having a first coil winding face and a second coil winding face in an axial direction, a coil wound around the first coil winding face and the second coil winding face, and a coil winding start part and a coil winding end part arranged on an opposite side to the second coil winding face with respect to the first coil winding face. The coil is wound around the first coil winding face by an odd number of layer(s) from the winding start part and then the coil is wound around the second coil winding face by an even number of layers in a reverse direction to the first coil winding face, and then the coil is wound around the first coil winding face by an odd number of layer(s) in a reverse direction to the second coil winding face. The magnetic device may be used in a lens drive device in which the coil wound body is a movable body having a lens.

Abstract: A camera module 100 includes a movable section 10 that includes a lens 11, a fixed section 30 having a hollow space extending in the optical axis direction of the lens 11, and an elastic body 40 that elastically supports the movable section 10 and the fixed section 30, an imaging element 3 that is fixed to the fixed section 30 and has a light-receiving surface perpendicular to the optical axis of the lens 11, a plurality of magnets 31a, 31b, 31c, and 31d arranged along the fixed section 30, and a coil section 22 provided in the movable section 10. The elastic body 40 includes an upper spring 41a and a lower spring 41b, which support the fixed section 30 between adjacent ones of the magnets 31a, 31b, 31c, and 31d along the arrangement direction of these magnets on a plane perpendicular to the optical axis of the lens 11. With this configuration, it is possible to provide a camera module with an automatic focusing control function, whose thickness can be reduced remarkably.

Abstract: An optical assembly includes a light path and at least one optic to be positioned in the path. A support arrangement supports the optic having a foot arrangement including at least one foot that receives a direct manipulation with the foot slidingly engaged against a support surface to move the optic relative to the light path. Movement of the foot may move the optic along a predetermined path. The foot defines a footprint for engaging the support surface and receives the direct manipulation in a way which changes the footprint on the support surface to move the optic responsive to changes in the footprint. A movement arrangement may selectively bias the foot against the support surface during a movement mode, intended to permit movement of the foot against the support surface, and in a locked mode, intended to lock the foot against the support surface.

Abstract: An exemplary lens module includes a lens barrel (10), a lens (20) and a sleeve barrel (30). The lens barrel includes an adjusting magnet (15). The lens is mounted in the lens barrel. A part of the lens barrel is slidably mounted in the sleeve barrel, the sleeve barrel includes a positioning magnet group (33), and the positioning magnet group cooperates with the adjusting magnet to selectably position the lens barrel in at least two different positions in the sleeve barrel.

Abstract: By maintaining a relative position of coils of a movable unit with respect to fixed magnets in a normal state to stabilize a relative position of the movable unit with respect to the whole of a lens drive assembly, the lens drive assembly is provided as an assembly capable of adjusting the focus of a lens in a satisfactory manner. In a voice coil type lens drive assembly for adjusting the focus of a lens, a spring 6, a yoke 6 with magnets 5 and a movable unit M1 attached thereto, and electrically conductive springs 2, are accommodated in this order on a base 1 and a connecting portion of a cover frame 8 and that of the base 1 are connected together to unite the two components. At the same time, cut-in portions 6d formed in end portions of the yoke 6, which is a metallic yoke, are fitted on projections 1e of the base 1 and both are joined together with connections to the cover frame 8 as guide.

Abstract: A camera module for small-sized electronic apparatuses such as digital cameras and cellular phones includes a lens unit; and a holder which houses the lens unit and is displaceable along an optical axis direction of the lens unit. A coil is provided on the holder of octagon shape in cross section having eight outside surface portions with a yoke having an outer cylindrical wall portion formed to have an octagon shape similar to the octagon shape of the coil and having eight magnet mounting inner surfaces. Eight flat plate-shaped magnets on the mounting surfaces for providing a magnetic field are arranged to face the outside surface portions of the coil through a predetermined constant spacing. Upper and lower leaf springs respectively support the holder so as to be displaceable along the optical axis direction of the lens unit; a base for supporting the yoke and the lower spring.

Abstract: An optical device. A drive moving assembly includes a lens module and a drive coil. The drive coil surrounds the lens module and provides a central axis parallel to an optical axis of the lens module. A drive stator includes a housing, a magnetic member, and a yoke. The lens module is movably disposed in the housing. The magnetic member surrounds the drive coil and includes an opening. The yoke interacts with the magnetic member, generating a magnetic field. The magnetic member, yoke, and drive coil interact to move the drive moving assembly parallel to the optical axis. A brake coil is disposed in the opening. A braking resilient member is connected between the drive stator and the brake coil and disposed in the opening. The brake coil interacts with the magnetic member, yoke, and braking resilient member and detachably abuts the drive moving assembly.

Abstract: A lens driving apparatus 1 of the present invention includes a substantially cylindrical yoke 3; a base 5 to which the yoke 3 is attached; a carrier 7 having a lens; a coil 10; and a magnet 13, wherein the carrier 7 is moved in a direction of an optical axis of a lens by electromagnetic force generated by passing current through the coil 10, the base 5 is substantially square-shaped as viewed from a plane, the yoke 3 is placed at an inner position of the base 5, the yoke 3 has an outer peripheral wall 3a and an annular inner peripheral wall 3b to be spaced to each other, each magnet is placed between the outer peripheral wall and the inner peripheral wall and at a position corresponding to a base corner portion of the base 5, and a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at a base side portion 3e is made narrower than a space between the outer peripheral wall 3a and the inner peripheral wall 3b positioned at the base corner portion.

Abstract: A piezoelectric-driving optical lens is disclosed, which comprises: a lens, having a barrel with a friction ring annularly mounted on the outer wall of the barrel as the outer diameter of the friction ring is larger than that of the barrel; a plurality of piezoelectric stators, arranged surrounding the lens and abutted against the friction ring, for providing a rotation driving force to the lens for focusing or zooming function; and a seat, for receiving the lens and the plural piezoelectric stators; wherein, the plural piezoelectric stators can actuate simultaneously to output a maximum driving torque.

Abstract: An optical pickup includes an actuator having an objective lens and an optical base on which the actuator is supported. The actuator includes a yoke having an opening, a first straight section and an opposing second straight section, the opening being interposed between the straight sections, the first and second straight sections having a first and a second bent section, respectively, as an extension of each bent section. The yoke is formed as coving the actuator with the straight sections so that the objective lens is exposed through the opening without being obstructed by the optical base. The first bent section has one contact section whereas the second bent section has two contact sections. The optical base includes an ark-like support section. The optical base supports the actuator in such a way that the contact sections are made to have contact with the ark-like support section.

Abstract: An exemplary lens module includes one or more lenses, a hollow stationary assembly, a hollow elastic member, and a hollow movable assembly. The one or more lenses are received in the hollow movable assembly. The stationary assembly includes a first magnetic field generator, and two spaced guiding rods defined on the first magnetic field generator. The hollow elastic member is attached onto the first magnetic field generator. The hollow elastic member has two engaging holes and two flexible portions. The movable assembly includes a second magnetic field generator and two guiding holes. The flexible portions are attached to the second magnetic field generator, and the guiding rods extend through the engaging holes and the guiding holes.

Abstract: A camera module includes upper and lower leaf springs having a stable load characteristic and a holder displaceably held by the leaf springs so that the holder can be stably displaced within a magnetic circuit. The upper spring has an outer annular portion, an inner annular portion provided inside the outer annular portion so as to be displaceable with respect to the outer annular portion and attached to the holder, and a plurality of bridge portions coupled between the outer annular portion and the inner annular portion. The camera module further includes a bridge portion supporting member for supporting a part of at least one of the plurality of bridge portions so that a load characteristic of the leaf spring can be changed.

Abstract: A projector includes a light source, an optical modulation device to form an optical image, a projection optical device, and a projection position adjusting device to adjust the projection position. The projection position adjusting device includes a fixed member, a moving member a dial knob, a drive mechanism that transmit rotation of the dial knob, and a reference position detecting mechanism. The reference position detecting mechanism includes a spiral rail guiding section having a groove shape provided to a side face of the dial knob adjacent to the fixed member, along the rotational direction of the dial knob, a sliding section that slides in the guiding section with the rotation of the dial knob, and an engaging section provided to the guiding section, and engages with the sliding section upon the projection position of the projection optical device reaching the projection reference position.

Abstract: A calibrating apparatus for lens carrier, includes a carrier, a driving unit, a first-dimension detector, and a control unit. The driving unit is capable of moving the carrier in a first-dimension direction. The first-dimension detector is capable of generating a corresponding first-dimension positional signal for the carrier according to a condition of whether detecting the carrier. The control unit is capable of receiving the first-dimension positional signal. The control unit determines whether the driving unit performing a first-predetermined driving operation based on the first-dimension positional signal for the carrier received when starting to calibrate. Finally, a position of the carrier in the first-dimension direction is adjusted based on the first-dimension positional signal for the carrier received after performing the first-predetermined driving operation.

Abstract: The invention relates to an optical system comprising a transparent ball, particularly filled with a transparent liquid. Direct sunlight that is incident on the ball area exposed to the sun is reflected on the opposite, internal face of the hollow ball by means of a rotary mirror in such a way that the focus of the radiation field is reproduced in the center of the hollow ball. Solar converters can thus be statically disposed in the center of the hollow ball and are preferably provided with only one twisting means in order to permanently keep the solar converters in an ideal alignment relative to the focused sunlight.

Abstract: A lens-fastening apparatus for assembling a voice coil motor of a camera module is provided. The voice coil motor has a lens holder. The lens-fastening apparatus includes a guiding plate; a rotation stopping jig having a central and a lateral portions, disposed on the guiding plate, and fit with the lens holder for stopping a rotation of the lens holder; a focusing ring for rotating the lens; a first pressing device pressing the central portion of the rotation stopping jig to fasten the rotation stopping jig on the guiding plate; and a second pressing device pressing the lateral portion of the rotation stopping jig.

Abstract: An optical structure is disposed on a surface of a device substrate, and a lens system for introducing external light into a solid-state image pickup device is placed in the center of the optical structure. The outer shape of the optical structure seen from the light incident side of the lens system is rectangular, and its plane shape forms a rectangular frame section. An intermediate structure is disposed between the device substrate and the optical structure. The intermediate structure has a fitting section for fitting the optical structure in a part of side faces of the frame section.

Abstract: A moveable assembly includes a frame, resilient suspension arms made of carbon nanotube bundles, and a moveable member. The frame is disposed around the moveable member. Each of the resilient suspension arms includes a first end fixed to the frame, and a second end connected to the moveable member. The resilient suspension arms are centro-symmetrically arranged relative to the moveable member such that the moveable member is capable of stably moving along a predetermined direction driven by an external force.

Abstract: An optical element module includes an optical element, and a plurality of actuator elements. In the module, each actuator element has an ion conductive polymer film and electrodes arranged on both sides of the film, and a whole of the actuator element is bent in a direction of thickness by applying a voltage between the electrodes, and the direction of the thickness of the actuator elements is a direction of an optical axis of the optical element, the actuator elements are arranged at equal intervals around the optical axis on a plane perpendicular to the optical axis, and a displacement due to the bend of one end part of at least one actuator element acts on one of a side surface and a bottom surface of the optical element to effect one of tilting and movement in the direction of the optical axis of the optical element.

Abstract: A projection lens system 1A enlarges and projects onto a screen 8, via a plurality of lenses G1 to G16, image light emitted from, a light source 4 and modulated by DMDs 3r to 3b. A movable lens barrel 25 holds the lens G16, having positive power, which is positioned closest to the DMDs 3r to 3b. An outer tube 24 holds the movable lens barrel 25 to enable movement in the optical axis direction. Through thermal deformation at the time of an increase in temperature, the bimetal member 27 moves the movable lens barrel 25 in the optical axis direction so as to recede from the image formation devices which are the DMDs 3r to 3b.

Abstract: A lens adjusting device (100) includes an optical module (10) and a driver module (20). The driver module includes a seat (22), at least one magnet (24) and at least one winding (26). The optical module is rotatablly fixed on the seat. The magnet is fixed on the optical module. The magnet and the winding are positioned at one side of the optical module. A variable current is applied to the winding, and a magnetic field is formed at ends of the winding. The magnetic forces between the magnetic field and the magnet drives the optical module to rotate.

Abstract: An optical actuator is disclosed. The optical actuator includes a seat bearing the optical element, a yoke comprising an end, a suspension system comprising at least one spring sheet connecting the seat and the end, and a driving device moving the seat relative to the yoke. The spring sheet constrains the movement of the seat. The spring sheet includes an inner connecting portion connected to the seat, an outer connecting portion surrounding the inner connecting portion and connected to the end, and a spring structure disposed between the inner and outer connecting portions and connecting the inner and outer connecting portions.