Abstract: A lens barrel includes a first lens holding member holding a first lens group, a second lens holding member holding a second lens group and an adjustment mechanism capable of adjusting the position of the first lens holding member relative to the second lens holding member. On a first plane of the second lens holding member, provided are at least three positioning parts abutting on the first lens holding member at positions surrounding the second lens group, and a sheet member attached to the first plane at a position surrounding the three positioning parts. The sheet member is pressed against the first lens holding member in the photographing optical axis direction while surrounding the first lens group throughout, between the adjustment mechanism and the first plane when viewed in the photographing optical axis direction.

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: An adjustable lens structure includes a lens housing, a lens module, a rotatable lens seat, and a shifting apparatus. The lens housing has a front housing and a top housing located behind the front housing. The front housing is a hollow cylinder and the rotatable lens seat is placed inside the front housing. The lens module is placed on the rotatable lens seat. The shifting apparatus is engaged with the top housing. The shifting apparatus has a gear assembly engaged with the rotatable lens seat to provide adjustable shooting angle for the lens module.

Abstract: According to example embodiments, a lens positioning unit includes a fixed structure, a monolithic flexure hinge structure, any one of upper and lower portions of which is provided with a lens mount on which a lens is mounted and the other portion of which is secured to the fixed structure, and an input unit rotatably coupled to the fixed structure, the input unit serving to convert rotational motion into vertical translational motion so as to transmit the vertical translational motion to the upper or lower portion of the monolithic flexure hinge structure provided with the lens mount.

Abstract: An image pickup apparatus includes a first drive unit, a first lens unit configured to be driven by the first drive unit to perform a magnification-varying operation, a second drive unit, a second lens unit configured to be driven by the second drive unit, and a controller configured to control the first drive unit and the second drive unit so as to drive the second lens unit with reference to a position of the first lens unit in performing the magnification-varying operation. The controller controls the second lens unit so as to move only in a first direction in performing the magnification-varying operation.

Abstract: This invention provides an electromagnetically driven device applicable to a lens driving device with an anti-shake function by a simple structure that enables the movable member to swing around an axis thereof. A flat spring for swinging connects to a stationary frame body provided with a permanent magnet set and a coil set for swinging is mounted on an outer circumference of a movable frame body. When an axial direction of the movable frame body is designated as the Z axis, the coil set for swinging including a first through fourth coils arranged around the Z axis and spaced at uniform intervals with each winding around an axis perpendicular to the Z axis and opposite to the permanent magnet set respectively. The permanent magnet set includes a first through fourth magnets, wherein each magnet is arranged between two adjacent coils among the first through fourth coils.

Abstract: A lens barrel includes a fixed frame, a rotary frame provided inside the fixed frame, a first frame provided inside the rotary frame, an electronic component provided inside the first frame, and a flexible printed circuit board connected, at one end thereof, to the electronic component and connected, at the other end thereof, to the fixed frame. A gear part is provided at an outer circumferential surface of the rotary frame. In the first frame, a first protrusion outwardly protruding beyond the gear part in a radial direction about the optical axis is provided at a position corresponding to the flexible printed circuit board in a circumferential direction about the optical axis on a side of the gear part opposite to the object in the optical axis direction.

Abstract: An image pickup apparatus arranged to detachably mount a lens unit including a focus lens, controls such that if the focus lens is movable by the amount of movement within a predetermined time, a next amount of movement of the focus lens is decided on the basis of a first focus signal extracted from an image signal corresponding to charges accumulated in a focus detection area at a first timing, and if the focus lens is not movable by the amount of movement amount within the predetermined time, a next amount of movement of the focus lens is decided after completion of the movement of the focus lens on the basis of a second focus signal extracted from the image signal corresponding to the charges accumulated in the focus detection area at a second timing at which the focus lens is stopped.

Abstract: A system constructs a composite image using focus assessment information of image regions.

Abstract: A lens moving mechanism includes a guide shaft extending in an optical axis direction and a lens frame. The lens frame includes a transfer portion which follows movement of the nut member, which is screw-engaged with a lead screw of a motor. An effective length of the guide shaft is greater than that of the lead screw so that an end of the guide shaft and the motor overlap each other. Part of the fit-on portion of the lens frame is positioned where the end of the guide shaft and the motor overlap each other when the lens frame is at a lens-frame moving end, and is positioned to face the lead screw in a direction orthogonal to the optical axis when the lens frame is at the opposite lens-frame moving end.

Abstract: A lens barrel includes a holder configured to hold a lens, a fixing unit configured to fix the holder, an intermediate unit arranged between the fixing unit and the holder, a first fixing member configured to fix the intermediate unit and the holder, a second fixing member configured to fix the fixing unit and the intermediate unit, a first tilter configured to tilt an optical axis of the lens around a first straight line that is unparallel to the optical axis of the lens, by changing a tilt of the holder relative to the intermediate unit, and a second tilter configured to tilt the optical axis of the lens around a second straight line that is unparallel to the optical axis of the lens and the first straight line, by changing a tilt of the intermediate unit relative to the fixing unit.

Abstract: A projector includes: an electro-optic device which modulates light emitted from a light source; a projection lens which projects the light modulated by the electro-optic device; and a lens shift mechanism which shifts the projection lens in a direction perpendicular to the optical axis of the projection lens, wherein the lens shift mechanism includes a shift unit which supports the projection lens and shifts the projection lens in the direction perpendicular to the optical axis, a guide unit which guides the shift of the shift unit, and a drive unit which moves the shift unit, and the drive unit includes a rotation section as a rotated part which has a first bevel gear rotating around a center axis extending in the same direction as that of the optical axis, and a transmission section which has a second bevel gear engaging with the first bevel gear and transmits the rotation of the rotation section to the shift unit.

Abstract: A lens barrel which can increase the relative movement interval of lens units in the direction of an optical axis without increasing the dimension of a translating cylinder, which inhibits the rotation of the lens units, in the direction of the optical axis. The movement of a second lens unit holding second group lenses is switched from linear guide by a first translating guide unit to linear guide by a second translating guide unit when the second lens unit moves in a direction relatively away from a first lens unit holding first group lenses.

Abstract: A lens control apparatus, and an interchangeable lens including the lens control apparatus, are provided which can obtain, in zoom tracking operation, excellent optical images at subject distances in a wider range. A lens control apparatus controls drive of an optical system including a first and a second focus lens for adjusting a focus state and a zoom lens for adjusting an angle of view. The lens control apparatus includes: a first driver that drives the first focus lens; a second driver that drives the second focus lens; a controller that controls the first and second drivers; and a storage unit that stores first and second tracking data, the first and second tracking data each being information that associates a position of the first and second focus lenses respectively with a position of the zoom lens for focusing on a subject.

Abstract: A lens support frame includes an annular body portion; a large diameter lens holding groove on an inner peripheral surface of the body portion which is open on one side; a small diameter lens holding groove formed on an inner peripheral surface of the body portion and is open on the one side; and large-diameter-groove and small-diameter-groove lens-bonding depressions formed on inner peripheral surfaces of a large diameter lens holding groove and the small diameter lens holding groove, respectively, and allow an adhesive to be injected into the large-diameter-groove and small-diameter-groove lens-bonding depressions through end openings thereof on the one side, the end opening of the small-diameter-groove lens-bonding depression being communicatively connected with the large-diameter-groove lens-bonding depression. Circumferential positions of the large-diameter-groove and small-diameter-groove lens-bonding depressions are mutually different.

Abstract: A zoom lens and a zoom control method are disclosed. The zoom lens comprises an image sensing module, a plurality of lens sets, a plurality of reflecting mirrors, a plurality of rotation shafts. The image sensing module senses light beams to generate image signals. The plurality of lens sets respectively have different optical power. The plurality of reflecting minors comprise a movable reflecting mirror and a fixed reflecting minor. The plurality of rotation shafts are coupled the movable reflecting mirror. Therein, the movable reflecting minor is controlled by the plurality of rotation shafts to rotate to a first or a second position, such that the optical paths may be generated when the light beam passes through the lens sets having different optical power and each reflecting minor, and the light beam irradiates into the image sensing module through one of the optical paths.

Abstract: An objective lens assembly is provided, with a sleeve, a first positioning member arranged in the sleeve, which is housed displaceable in longitudinal direction of the sleeve and holds at least one lens, a first adjustment unit which brings the first positioning member into abutment on the inside of the sleeve such that the first positioning member rests against the inside of the sleeve in a first linear contact area and at the same time the displaceability of the first positioning member is maintained. More than one positioning member can be utilized along with multiple lenses and can utilize simple mechanical structures (e.g., blind- and through-holes and pins or shanks) and/or magnetic or magnetizable materials to maintain a desired position of the sleeve.

Abstract: A piezoelectric actuator includes a first piezoelectric element that performs thickness-shear vibration in a first direction, a first member that is driven by the first piezoelectric element and that vibrates in the first direction, a second piezoelectric element that is supported by the first member and that performs thickness-shear vibration in a second direction, a second member that is driven by the second piezoelectric element and that vibrates in the second direction, a pressurizing section that generates a pressure between the second member and a driving target member driven by the second member. The pressurizing section includes a third piezoelectric element that changes the pressure between the second member and a driving target member on the basis of a driving state of the driving target member.

Abstract: An image pickup apparatus includes a first drive unit, a first lens unit configured to be driven by the first drive unit to perform a magnification-varying operation, a second drive unit, a second lens unit configured to be driven by the second drive unit, and a controller configured to control the first drive unit and the second drive unit so as to drive the second lens unit with reference to a position of the first lens unit in performing the magnification-varying operation. The controller controls the second lens unit so as to move only in a first direction in performing the magnification-varying operation.

Abstract: A lens mechanism and a device using the same are provided. The lens mechanism has an optical axis and comprises a zoom module, a focus module and a focusing lens group. The zoom module performs an optical compensation. The focus module comprises a rotatable arm. The focusing lens group is disposed on the rotatable arm, wherein when the lens mechanism is in a stand-by state, the focusing lens group is located at the optical axis; when the lens mechanism is in a close-end, the focusing lens group is away from the optical axis.

Abstract: An FPC (3) includes a first bending portion (31) having an outer periphery thereof directed from an attachment portion (36) toward an upstream end (3F), and bent in such a direction as to face the attachment portion (36); a second bending portion (32) which is bent from the attachment portion (36) toward a center axis (Z1) at a specified position closer to a downstream end (3B) than the first bending portion (31), and guided to a positioning portion (11); and a third bending portion (33) which is bent toward the camera body at a specified position closer to the downstream end (3B) than the positioning portion (11).

Abstract: A lens barrel having an image forming optical system including a first optical system and a second optical system which is moveable independently from the first optical system, a first driving portion which drives the first optical system during a magnification changing operation of the image forming optical system, and a second driving portion which drives the second optical system during the magnification changing operation, along with driving the second optical system during a focus adjustment of the image forming system.

Abstract: A projection device including a case, a zoom lens module, a focus lever, and a linkage mechanism is provided. The case defines a guiding slot. The zoom lens module is disposed in the case and is configured for projecting an image. The focus lever is disposed in the case and is connected to the zoom lens module. The focus lever is perpendicular to a lengthening direction of a center axis of the zoom lens module. The linkage mechanism includes an adjusting rod having a connecting portion and an operating portion. The connecting portion is connected to the focus lever and is configured for rotating relative to the focus lever and moving along the lengthening direction of the focus lever. The operating portion extends out of the case and is configured for being controlled to move relative to the case along a lengthening direction of the guiding slot.

Abstract: An imaging apparatus includes a first lens barrel, a second lens barrel disposed side by side with the first lens barrel in a direction perpendicular to an optical axis of the first lens barrel, a reference metal sheet including a mounted surface portion mounted on a surface perpendicular to the optical axis of the first lens barrel and a reference surface portion facing an optical axis direction, an adjustment metal sheet including a base surface portion mounted on a surface perpendicular to an optical axis of the second lens barrel and an adjustment surface portion facing an optical axis direction and positioned side by side with the reference surface portion in state of being separated in the optical axis direction, and an adjustment section changing a direction of the adjustment surface portion to reference surface portion and adjusting a direction of optical axis of second lens barrel.

Abstract: A projector includes: an electro-optic device which modulates light emitted from a light source; a projection lens which projects the light modulated by the electro-optic device; and a lens shift mechanism which shifts the projection lens in a direction perpendicular to the optical axis of the projection lens, wherein the lens shift mechanism includes a shift unit which supports the projection lens and shifts the projection lens in the direction perpendicular to the optical axis, a guide unit which guides the shift of the shift unit, and a drive unit which moves the shift unit, and the drive unit includes a rotation section as a rotated part which has a first bevel gear rotating around a center axis extending in the same direction as that of the optical axis, and a transmission section which has a second bevel gear engaging with the first bevel gear and transmits the rotation of the rotation section to the shift unit.

Abstract: A zoom lens includes, in a sequence from an object side to an image side, a first lens group having a negative refractive power and comprising two lenses; a second lens group having a positive refractive power; a stop disposed on the image side of the second lens group; and a third lens group having a positive refractive power, wherein: during zooming from a wide angle position to a telephoto position, an interval between the first lens group and the second lens group decreases, and an interval between the second lens group and the third lens group increases.

Abstract: A lens barrel of the present invention includes: a fixing frame having a plurality of cam grooves that are formed an inner circumferential surface of the fixing frame and also having a protrusion provided between any adjacent two of the cam grooves among a plurality of the cam grooves; and a drive frame having cam followers that are provided to an outer circumferential surface of drive frame, are engaged with the cam grooves, and are movable along the cam grooves. With this configuration, when an external force is applied to the drive frame, an end portion of the drive frame comes into contact with the protrusion to prevent the cam followers from coming out of the cam grooves.

Abstract: A zoom lens unit 1 includes a zoom lens L operable to move a plurality of lens groups in an optical axis direction upon zooming from a wide-angle end to a telephoto end, a first lens group frame 7 for supporting the first lens group G1 positioned on the most object side of the zoom lens L, and a drive 3 operable to move the first lens group frame 7 in a direction vertical to the optical axis.

Abstract: A lens device includes a main body unit, a guiding shaft unit, a lens unit, a focus adjusting unit and a resilient component. The guiding shaft unit includes three parallel guiding shafts disposed in the main body unit. The lens unit includes a lens frame disposed in the main body unit and having three guiding portions that receive slidably and respectively the guiding shafts, and a lens mounted co-movably in the lens frame. The focus adjusting unit is disposed in the main body unit and includes a driven member abutting against the lens frame and driven by a driving member for driving the lens unit to slide along the guiding shafts. The resilient component is disposed for biasing resiliently the lens frame toward the driven member.

Abstract: A lens driving module and an image pickup apparatus thereof include a driving barrel, a first zooming barrel, a second zooming barrel and a focusing barrel. An inner wall of the driving barrel has at least one first groove, at least one second groove and at least one controlling convex dot. The first zooming barrel, the second zooming barrel and an outer wall of the focusing barrel have at least one first-direction convex dot, at least one second-direction convex dot and at least one third groove respectively. At least one first-direction convex dot, at least one second-direction convex dot and at least one controlling convex dot are inserted in at least one first groove, at least one second groove and at least one third groove respectively. When the driving barrel is rotated, the lens driving module performs a zooming or focusing operation by each groove and each convex dot.

Abstract: A small-sized zoom lens having a high zooming rate and a high optical performance, the zoom lens including a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power, wherein an iris diaphragm is disposed between the second lens group and the third lens group.

Abstract: A lens barrel includes a zoom optical system in which a focal distance is changeable; a first group frame moving together with the first lens group; and first and second cam mechanisms transmitting drive force to the first group frame. In a zoom region, each of a first group cam groove and a cam slot includes a first section, a second section which adjoins the first section and has an absolute value of a gradient smaller than that of the first section, and the third section which adjoins the second section and has the absolute value of the gradient larger than that of the second section, and in which a sign of the gradient is the same as that of the first section. A distance from an imaging surface to the first group frame in the optical axis direction has a local minimum in the second section.

Abstract: A control unit starts a first operation when a first detection unit detects rotation of an operation member in a first direction by an angle not less than a first angle and changes a control value for the first operation when a second detection unit detects rotation of the operation member in the first direction by an angle not less than a third angle larger than the first angle. Furthermore, the control unit starts a second operation when the second detection unit detects rotation of the operation member in a second direction by an angle not less than a fourth angle and changes a control value for the second operation when the first detection unit detects rotation of the operation member in the second direction by an angle not less than a second angle larger than the fourth angle.

Abstract: An oscillating actuator drive unit includes an oscillator unit that generates an oscillating signal having a first frequency; an amplifier unit that amplifies the oscillating signal based on a first amplification factor and generates a first amplified oscillating signal as a driving signal for driving an oscillating actuator; a voltage detecting unit that detects a first voltage associated with the first amplified oscillating signal; and a signal control unit that receives the first voltage from the voltage detecting unit and computes a second amplification factor with reference to at least the first voltage, the signal control unit supplying the second amplification factor to the amplifier unit to allow the amplifier unit to amplify the oscillating signal based on the second amplification factor, the amplified oscillating signal having a second voltage, the second voltage being closer to a target voltage than the first voltage.

Abstract: The image sensor and the imaging substrate are arranged in a space formed between the connection portion and the plane formed by the holding portion.

Abstract: A zoom lens array, including a liquid crystal layer, a first strip electrode, and a second strip electrode, is provided. The liquid crystal layer has a plurality of zoom regions. The first strip electrode is disposed on an upper side of the liquid crystal layer and located at the boundary between the zoom regions. The second strip electrode is disposed on a lower side of the liquid crystal layer and located at the boundary between the zoom regions. The first strip electrode and the second strip electrode are alternatively arranged. Moreover, a switchable two and three dimensional display with the above zoom lens array is also provided.

Abstract: A zoom lens barrel assembly including: a first zoom ring comprising a first protrusion; a guide ring disposed around the first zoom ring comprising a first guide slot through which the first protrusion passes, and a second guide slot; a second zoom ring comprising a second protrusion, and movable in an axial direction; a first cylinder comprising a guide groove into which the second protrusion inserts, and a third protrusion passing through the second guide slot, and disposed between the first and second zoom rings; a second cylinder disposed around the guide ring comprising a fourth protrusion, a first groove portion into which the first protrusion inserts, and a second groove portion into which the third protrusion inserts, and supporting the first zoom ring and the first cylinder; and an external cylinder disposed around the second cylinder and comprising a third groove portion into which the fourth protrusion inserts.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive refractive power. The second lens unit and the fourth lens unit move during zooming. The third lens unit includes at least one positive lens and at least one negative lens. When Rnf and Rnr are radiuses of curvature of surfaces on the object side and the image side respectively of one negative lens of the second lens unit, Rpf and Rpr are radiuses of curvature on the object side and the image side respectively of one positive lens of the second lens unit, the following conditions are satisfied: 3.4<(Rnf?Rnr)/(Rnf+Rnr)<4.4 ?0.7<(Rpf?Rpr)/(Rpf+Rpr)<?0.5.

Abstract: Provided is a lens barrel comprising a lens holding member that holds a lens; a guide bar that has a magnetic pattern in which a pair of magnetic poles repeat in a longitudinal direction and that has the longitudinal direction thereof oriented in a direction of an optical axis of the lens to guide the lens holding section to move in the direction of the optical axis; a control portion that is disposed on an outer circumferential surface of the lens holding member and that includes a magnetic body generating magnetic force between itself and the magnetic pattern of the guide bar; and a drive coil that is arranged in a manner to not contact the guide bar and that generates magnetic drive force between itself and the guide bar.

Abstract: A holding arrangement for an optical element, in particular for a cylindrical lens, includes a basic structure surrounding an optical element and a mounting device by which the optical element is supported on the basic structure. The mounting device has two degrees of freedom so that the optical element can be supported by the mounting device in a manner that allows the optical element to rotate about both about an optical axis and an axis perpendicular to the optical axis. If the optical element is a cylindrical lens, the axis perpendicular to the optical axis can be an axis perpendicular to an axial direction of the cylindrical lens. The disclosure further relates to a manipulator unit for an optical system which includes a holding arrangement.

Abstract: A projector that projects an image to a projection object using light emitted from a light source lamp, including a light adjustment sensor that measures the projection distance to the projection object and the intensity of reflected light from the projection object; a zoom position sensor that detects a zoom ratio; and a control section that adjusts the intensity of light emitted from the light source lamp based on the projection distance and the reflected light intensity measured by the adjustment sensor and the zoom ratio detected by the zoom position sensor so as to keep the luminance of a projection image displayed on the projection object constant.

Abstract: A lens barrel includes an optical imaging system having an optical axis and forming an optical image of an object. The lens barrel further includes a frame including a wall extending in the optical axis direction; an electronic component provided in the frame; and a flexible cable electrically connected to the electronic component. An opening is formed in the wall. The flexible cable covers at least a part of the opening to block a light passage through the opening.

Abstract: A light amount adjustment device including a motor which can be reduced in size by reducing radial and axial dimensions and makes it possible to increase the motor output. The device has a stator of a motor drive mechanism formed integrally with a holding member fixed to a cam member with aperture blades and a rotary member for driving them sandwiched therebetween. A stator includes a support portion, and first and second magnetic pole portions. The first and second magnetic pole portions extend toward an outer periphery of the rotor and coils are inserted thereon from respective extending ends. The extending ends are disposed in a manner opposed to the outer periphery of the rotor. The two portions are disposed with an angle therebetween such that respective lines extending in the extending directions intersect with each other.

Abstract: Embodiments of a zoom lens system may comprise at least four lens groups having a NPNP power sequence. The first lens group may include a stationary lens element. The second through fourth lens groups may be movable during zooming. An additional movable N or P lens group on the image side of the system may correct field curvatures or astigmatism. The first lens group may include a stationary, N first lens subgroup and an N second lens subgroup having a movable lens element for focusing. The first lens group may contribute to low focus breathing. Multiple lens groups may have matching movement plans. Some embodiments may be high speed and have a first lens group that can be stationary during zoom. Some embodiments may have only one aspheric surface.

Abstract: A zooming adjustment mechanism including a holder, a zoom ring, at least two rollers, a first resilient sheet, and a second resilient sheet is provided. The zoom ring is confined to the holder and coupled to a zoom bar. The rollers are respectively confined to a groove of the holder and in contact with a bottom surface of the zoom ring. The first resilient sheet is disposed on a first side of the holder, and each end of the first resilient sheet leans against a roller. The second resilient sheet is disposed on a second side of the holder, and each end of the second resilient sheet leans against a roller. A projection lens module including the zooming adjustment mechanism is also provided.

Abstract: A lens barrel includes a fixed frame, a rotary frame provided inside the fixed frame, a first frame provided inside the rotary frame, an electronic component provided inside the first frame, and a flexible printed circuit board connected, at one end thereof, to the electronic component and connected, at the other end thereof, to the fixed frame. A gear part is provided at an outer circumferential surface of the rotary frame. In the first frame, a first protrusion outwardly protruding beyond the gear part in a radial direction about the optical axis is provided at a position corresponding to the flexible printed circuit board in a circumferential direction about the optical axis on a side of the gear part opposite to the object in the optical axis direction.

Abstract: A lens module includes a lens barrel, a first lens, a second lens, and a spacer. The lens barrel includes an object-side end and an image-side end opposite to the object-side end. The first lens is received in the lens barrel, and adjacent to the object-side end. The second lens is received in the lens barrel, and adjacent to the image-side end in relative to the first lens. The spacer is an annular plate, and includes an object-side surface, an image-side surface opposite to the object-side surface, and an inner sidewall. The spacer is positioned between the first lens and the second lens. The object-side surface faces the first lens, and the image-side surface faces the second lens. The intersection of the object-side surface and the inner sidewall forms a chamfer.

Abstract: A lens barrel is provided that includes an image optical system with an optical axis. The lens barrel has a first lens, a second lens, a guide shaft, and a driving unit, an adjusting mechanism, and a base frame. The adjusting mechanism is coupled to the guide shaft and has a first and a second portion. The first portion is deflectable and supports one end of the guide shaft. The second portion is configured to press against the first portion to deflect the first portion at an angle relative to the optical axis. The adjusting mechanism is configured to adjust the position of the guide shaft. The guide shaft is arranged to at least partially overlap the driving unit in the circumferential direction around the optical axis, and the first lens is arranged to at least partially overlap the adjusting mechanism in the radial direction relative to the optical axis.

Abstract: A lens with a single detection member shared to perform focusing and zooming operations includes a base, a detection member, a focusing unit and a zooming unit. The focusing unit includes a focusing group frame and a focusing detection board. The zooming unit includes a zooming group frame and a zooming detection board. In a reset method, a signal read from the detection member is a light-passing signal or a light-shielding signal, the focusing group frame and the zooming group frame are in any position. With the focusing group frame of the focusing unit and the zooming group frame of the zooming unit, the any position of the focusing group frame and the zooming group frame can be determined, and then the focusing group frame and the zooming group frame are driven to reset as a predetermined standby position.

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.