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

Abstract: A lens barrel includes a first frame and a second frame. The first frame includes a plurality of cam grooves. The second frame includes a plurality of cam followers that engage with each of the plurality of cam grooves, and a gear portion. In this case, if rotational force is transmitted to the gear portion, the second frame moves in the optical axis direction while rotating with respect to the first frame. At least one of the plurality of cam followers is disposed on the image plane side of the gear portion.

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

Abstract: A projection lens includes lens frames each of which holds a lens group and has cam pins, a guide barrel which has linear grooves through which the cam pins are inserted and into which the lens frames are sequentially fit and inserted, and a cam barrel into which the guide barrel is fit and inserted, which has cam grooves with which the cam pins protruding through the linear grooves engage, and which is rotated relative to the guide barrel to guide the cam pins along the linear grooves and the cam grooves and hence move the lens frames along the linear grooves. A protrusion is provided on the inner surface of the guide barrel, and the protrusion comes into contact with one of the lens frames so that the cam pins of the lens frame are positioned at the ends of the corresponding cam grooves.

Abstract: A lens barrel capable of keeping a stable zoom operation, increasing magnification of an image pickup apparatus with a simple configuration, and decreasing a camera thickness. A lens barrel is moved in an optical axis direction between a taking position and a retracted position to change magnification. A lens holding member holds a lens and has a follower part. A rectilinear movement regulating member regulates relative rotation of the lens holding member and has a convex part at an outside and a rectilinear rib at an image surface side than the convex part. A cam barrel has a cam groove for engaging the follower part and a groove for engaging the convex part formed on an inner surface. The cam barrel has a cam piece extended to the image surface side, a part of the cam groove is formed on an inner surface of the cam piece.

Abstract: An optical device includes a first lens frame bearing a first lens set and having a plurality of rods, a first cam barrel rotating to move the first lens frame along a first axis, a second lens frame bearing a second lens set and having a plurality of holes corresponding to the rods, and a second cam barrel rotatably disposed around the first cam barrel to rotate the first cam barrel and move the second lens frame along a second axis parallel to the first axis, wherein the first axis is substantially coincident with the second axis with the rods inserted into the holes.

Abstract: A cam frame of a zoom lens is provided. The cam frame includes an end surface, a first cam groove including a first connecting portion, a second connecting portion and a zooming-collapsing operation portion connected between the first connecting portion and the second connecting portion, an introducing groove connecting the end surface and the first connecting portion, a second cam groove, and a first connecting groove connecting the second connecting portion and the second cam groove.

Abstract: A lens barrel and a lens unit of the present invention each include a cam drum having a cam groove, a lens holding frame for holding a moving lens group, and a cam follower installed on an outer periphery of the lens holding frame. The cam groove has two groove side walls, and an inclined wall that extends outward in a radial direction of the cam drum from one of the two groove side walls to the other thereof, and the cam follower has a contact member that contacts the inclined wall and a cam follower main unit respectively, and a biasing member that biases the contact member outward in the radial direction.

Abstract: The lens holding structure of the disclosure includes a lens; and a holding frame including a seat surface and holding the lens, wherein an inclination in a yaw direction and an inclination in a pitch direction of the lens in a state where the lens is brought into contact with the seat surface are substantially equal to an inclination in a yaw direction and an inclination in a pitch direction of the lens in a state where the lens is held by the holding frame, and a clearance is formed between the lens and the seat surface.

Abstract: A lens barrel which is capable of increasing zoom rate and slimming down a lens barrel, and by extension an image pickup apparatus while reducing the size of the lens barrel in a radial direction without decreasing the lens diameter of a retractable lens which retracts outwardly in a radial direction when the lens barrel is collapsed. A first lens holding frame holds a first lens, and a second lens holding frame holds a second lens. The first lens holding frame follows a cam groove, which is formed in a cam cylinder, to move in a direction of an optical axis. In a shooting state, the second lens is disposed on the optical axis. In a retracted state, the second lens is disposed at a position retracted outwardly in a radial direction from the center of the optical axis and on a rear surface of the cam cylinder.

Abstract: A lens barrel includes an optical system including a first lens group having at least one lens; a cam frame including a first cam groove; and a first movable frame including a first cam follower engaged with the first cam groove. When the first movable frame relatively rotates with respect to the cam frame, the first movable frame relatively moves with respect to the cam frame in an optical axis direction together with the first lens group. A region of the first cam groove, through which the first cam follower passes when a focal distance of the optical system is changed from a wide-angle end to a tele end includes first and second regions adjacent to each other. The first region has a groove width narrower than that of the second region.

Abstract: At an inner circumferential surface of a cam frame, second cam grooves and an inner gear are formed. A second lens group frame includes a base, extensions each extending from the base in an optical axis direction, and cam pins each outwardly protruding from a tip end part of a corresponding one of the extensions in a radial direction. In the extension, a stepped part is formed. The stepped part overlaps, when each cam pin moves according to a corresponding one of the second cam grooves, with the inner gear as viewed in the radial direction, and is recessed toward the inside in the radial direction as compared to a tooth tip of the inner gear so as not to overlap with the tooth tip of the inner gear as viewed in a circumferential direction.

Abstract: A method and device is described for compensating ambient temperature dependent magnification and focus change of a zoom lens system, whereby an ambient temperature compensation structure cooperates with a rotational ring and an optical-element adjusting member such that a phase variation between the rotational ring and the optical-element adjusting member in response to an ambient temperature change is compensated and whereby the phase variation characterizes an optical property of the zoom lens system such as magnification or focus.

Abstract: A lens barrel (3) comprises a drive frame (30) and a first lens frame (50). The first lens frame (50) has first to third cam followers (54a to 54c) that are respectively inserted into first to third outer cam grooves (34a to 34c), and first and second auxiliary pins (55a and 55b) disposed so as to be able to come into contact with first and second auxiliary grooves (35a and 35b). When viewed in the Y axis direction, the first and second auxiliary pins (55a and 55b) are disposed between the first to third cam followers (54a to 54c) in the peripheral direction. The positions of the first and second auxiliary pins (55a and 55b) are offset from the positions of the first to third cam followers (54a to 54c) in the Y axis direction.

Abstract: A lens barrel has a rotary frame, lens group frame, and shutter frame. The rotary frame has first and second cam grooves respectively on inner and outer peripheries as viewed in a radial direction. A first cam follower of the lens group frame and a second cam follower of the shutter frame are respectively engaged with the first and second grooves. A radial direction size the rotary frame is smaller than a sum of depths of the first and second grooves. The rotary frame includes a first region W1 only with the first groove, a region W0 with first and second grooves, and a region W2 only with the second groove. Positions of the first and second followers differ in a circumferential direction. At least one of the first and second followers has a non-contact portion not contacting with a groove wall of the corresponding groove in the region W0.

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: An optical image capturing system includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element and a seventh lens element. The first lens element with positive refractive power has a convex object-side surface. The second through seventh lens elements all have refractive power. The sixth lens element has an object-side surface and an image-side surface which are both aspheric. The seventh lens element has an object-side surface and an image-side surface which are both aspheric, its wherein the image-side surface of the seventh lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof.

Abstract: A lens barrel capable of distributing, upon receipt of the impact of, e.g., dropping, a torque load so as not to concentrate on a particular linear movement key and groove for linearly moving a barrel member, thereby suppressing occurrence of a failure. The lens barrel has a fixed barrel (8) and a third lens group barrel (3). In a movement region of the third lens group barrel (3) moving in the optical direction relative to the fixed barrel (8), each of a set of a first linear movement groove (8c) and a first linear movement key (3c) and a set of a second linear movement groove (8d) and a second linear movement key (3d) has a mutually engageable region and a mutually disengageable region, and a set of a groove (8e) and a projection (3e) has not a mutually engageable region.

Abstract: A zoom lens device includes a base barrel, first and second cam barrels connected rotatably to and movable relative to the base barrel, first and second lens barrels connected respectively to the first and second cam barrels, and a driving barrel surrounding and rotatable relative to the base barrel. Rotation of the driving barrel drives the first and second cam barrels to rotate synchronously and move individually along an axis, and therefore causes individual axial movements of the first and second lens barrels along the 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 lens barrel and a projector of the invention are provided with a fixed cylinder, and a cam ring mounted on the fixed cylinder. A first projection and a second projection are provided on one of the fixed cylinder and the cam ring, and a first rotation restricting portion and a second rotation restricting portion are provided on the other of the fixed cylinder and the cam ring. The first rotation restricting portion restricts rotation of the cam ring by abutting contact with the first projection when the cam ring is rotated in a first direction, and the second rotation restricting portion restricts rotation of the cam ring by abutting contact with the second projection when the cam ring is rotated in a second direction opposite to the first direction.

Abstract: A lens barrel includes a cam ring configured to be rotatably driven, a lens holding cylinder provided on an outer circumference of the cam ring and configured to hold a lens, and a barrier cylinder configured to hold a lens barrier, the barrier cylinder includes a cylinder portion, a first protrusion which extends from the cylinder portion toward an image plane side, and a cam engagement portion which is engaged with a cam groove of the cam ring, the lens holding cylinder includes a cylinder portion and a second protrusion which extends from the cylinder portion toward the image plane side, and the second protrusion of the lens holding cylinder is arranged so as to overlap with the cam engagement portion of the barrier cylinder in a radial direction orthogonal to an optical axis direction.

Abstract: Lens barrel capable of increasing shooting magnification while being miniaturized. A first lens group is caused to move in a direction of an optical axis by rotation of a second cam ring following rotation of a drive ring which has a focus cam groove on an inner periphery and is disposed on an outer periphery of a fixed cam ring having a cam groove and a rectilinear groove on an inner periphery. A second cam groove is disposed behind the first lens group in the direction of the optical axis. Rotation of the drive ring causes a follower of a focus group holding unit, which holds the second lens group, to follow the focus cam groove while being guided to move rectilinearly by the rectilinear groove. The follower following the focus cam groove causes the focus group holding unit to move in the direction of the optical axis.

Abstract: A lens barrel includes a lens group including a fixed lens including one or more lenses and an adjustment lens including one or more lenses, and a lens frame to hold the lens group, including an adjustment lens frame to hold the adjustment lens and an aligning mechanism to hold the adjustment lens frame movably in a direction orthogonal to an optical axis of the lens group relative to the lens frame.

Abstract: A lens barrel of the present invention comprises: first and second guide shafts arranged parallel to an optical axis X and provided in one of adjacent lens holding frames; first and second guide receiving holes formed in another of the adjacent lens holding frames for allowing the first and second guide shafts to be inserted therethrough and guided by the first and second guide shafts respectively; a first urging means of urging the one and the another of the adjacent lens holding frames along the direction of the optical axis; and a second urging means to rotate another of the adjacent lens holding frames in a circumferential direction of the first guide shaft. The first guide receiving hole is guided by the first guide shaft at two positions that are spaced apart from each other in the direction of the optical axis.

Abstract: A lens barrel includes an optical system including a first lens group having at least one lens; a cam frame including a first cam groove; and a first movable frame including a first cam follower engaged with the first cam groove. When the first movable frame relatively rotates with respect to the cam frame, the first movable frame relatively moves with respect to the cam frame in an optical axis direction together with the first lens group. A region of the first cam groove, through which the first cam follower passes when a focal distance of the optical system is changed from a wide-angle end to a tele end includes first and second regions adjacent to each other. The first region has a groove width narrower than that of the second region.

Abstract: Disclosed herein is a lens mechanism including: a base; a guide member fixed to the base; a lens holding member adapted to hold the lens and which is held by the guide member in such a manner as to move straight along the optical axis; a rotary member adapted to rotate while at the same time engaging with part of the lens holding member so as to cause the lens holding member to move straight along the optical axis; and polymer actuator elements each of which has one end fixed to the base or guide member and the other end engaging with part of the rotary member so as to rotate the rotary member in a plane orthogonal to the optical axis.

Abstract: Regarding a sighting telescope reversing system which comprises a guide casing fitted with a linear cam slot, further an external casing fitted with an external cam slot and fixed in the axial direction while rotatably supported on the guide casing, a mount holding a lens element and fitted with a guide pin passing through the linear cam slot as well as through the external cam slot, the present invention stipulates that the guide pin be fitted with a first and a second collar, both collars resting on a common shaft, the first collar being displaceable within the external cam slot and the second collar being displaceable within the linear cam slot.

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

Abstract: The lens barrel includes a first frame, a second frame, a drive actuator, and a transmission mechanism that transmits the drive force of the drive actuator. The second frame includes a substantially cylindrical main body, a gear portion, and cam grooves that include an inflection point in the range in which the zoom ratio of the optical system is varied. The transmission mechanism includes a first transmission gear portion that engages with a gear, a second transmission gear portion that is provided coaxially with the first transmission gear portion, and a clutch between the first transmission gear portion and the second transmission gear portion. The clutch temporarily disengages the drive force of the drive actuator transmitted to the first transmission gear portion, only with respect to rotation in one direction.

Abstract: Provided is a lens barrel capable of providing good operational feeling, the lens barrel including: a first barrel in which a cam groove having a shape curved with respect to a predetermined axis direction is formed to pierce through the first barrel; a second barrel capable of rotating around the predetermined axis along an outer circumferential surface of the first barrel, a straight groove extending in the predetermined axis direction being formed in the second barrel; a moving member that has a cam pin moving along the cam groove and the straight groove and moves in the predetermined axis direction while holding a lens inside the first barrel as the second barrel rotates with respect to the first barrel; and a damping mechanism that applies damping force depending on an angle of the cam groove to the predetermined axis direction to the second barrel.

Abstract: A zoom lens barrel assembly includes: 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 lens barrel includes an outer barrel including a first cam follower, an internal movable member including a second cam follower, a cam ring, a first cam groove formed on a surface of the cam ring and engaged with the first cam follower, and a second cam groove formed on the surface of the cam ring and is open at a front end of the cam ring. When the outer barrel is positioned in front of a predetermined position, the second cam groove determines a position of the internal movable member in the outer barrel via a limit portion while the second cam groove is not engaged with the second cam follower, and when the outer barrel moves rearward beyond the predetermined position, the second cam groove engages with the second cam follower and moves the internal movable member rearward.

Abstract: A lens barrel includes a first support frame and a second support frame. The first support frame has a cam groove. The second support frame has an annular main body with a cam follower that extends outwardly in a radial direction. The cam follower is slidably disposed in the cam groove and has a first cam portion, a second cam portion and a connecting portion. The second cam portion is aligned with the first cam portion along the circumferential direction of the main body. The connecting portion connects the first cam portion and the second cam portion to create a space between the connecting portion and the cam groove.

Abstract: An image pickup apparatus which makes it possible to form a multi-stage retractable lens barrel permitting the amount of extension of the lens barrel to be set as desired. A first intermediate rotary barrel fitted, for rotation, on a first intermediate rectilinear motion barrel restrained from rotation about an optical axis. A second intermediate rectilinear motion barrel is rectilinearly guided by the first intermediate rectilinear motion barrel. A second intermediate rotary barrel is fitted on the second intermediate rectilinear motion barrel and engaged with the first intermediate rotary barrel, rotation. The first intermediate rectilinear motion barrel has a cam groove formed on an inner peripheral surface thereof, for engagement with the second intermediate rotary barrel to cause the same to move along the optical axis.

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 holder includes: a first barrel with a plurality of helicoidal grooves that extend from a base portion to an end portion and at positions with rotational symmetry; and a second barrel with a plurality of protrusions that respectively enter the plurality of helicoidal grooves. The helicoidal grooves are respectively divided into helicoidal groove sections in multiple stages with a helicoidal groove section on a base portion side and a helicoidal groove section on an end portion side being disposed at angles that do not overlap. The first barrel includes circumferential grooves on the middle portion and circumferential grooves on the end portion. The middle circumferential grooves connect the end on the end side of the helicoidal groove sections on the base side to the end on the base side of the helicoidal groove sections on the end side and guide the protrusions in the circumferential direction.

Abstract: A lens barrel assembly includes: a lens barrel that is rotatable about an optical axis and is movable in a direction along the optical axis; a moving plate that is combined with the lens barrel so that the moving plate is rotated together with the lens barrel and is movable with respect to the lens barrel in the direction along the optical axis; a power transmission unit that is installed on the moving plate and transmits an outside rotation force to the lens barrel via the moving plate; and a stopper that is disposed on a path on which the moving plate moves in the direction along the optical axis and that limits a movement of the moving plate in the direction along the optical axis in a partial section of the path on which the lens barrel is moved.

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 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 lens barrel includes a first frame and a second frame. The first frame includes a plurality of cam grooves. The second frame includes a plurality of cam followers that engage with each of the plurality of cam grooves, and a gear portion. In this case, if rotational force is transmitted to the gear portion, the second frame moves in the optical axis direction while rotating with respect to the first frame. At least one of the plurality of cam followers is disposed on the image plane side of the gear portion.

Abstract: The lens barrel includes a moving frame, a drive frame, and a rectilinear guide frame. The drive frame includes a cam mechanism and guides the moving frame in the optical axis direction with the cam mechanism. The rectilinear guide frame supports the moving frame so that the moving frame moves in the optical axis direction but doesn't rotate. The drive frame includes a rotary guide portion. The rotary guide portion supports the rectilinear guide frame so that the rectilinear guide frame rotates with relative to the cam mechanism and doesn't move relatively in the optical axis direction. The rotary guide portion is disposed on the outer peripheral side of the cam mechanism and on the outer peripheral side of the moving frame. A holding space is formed between the cam mechanism and the rotary guide portion. Part of the moving frame is inserted into the holding space.

Abstract: A lens barrel includes a lens holding frame 102 that holds a lens 101 and that includes at least three follower pins 103, 104, and 102b, a guide cylinder 700 that linearly guides the lens holding frame 102 in an optical axis direction, and a cam cylinder 800 that rotates around an optical axis to move the lens holding frame 102 in the optical axis direction. At least three different kinds of cam grooves 800a, 800b, and 800c are formed on the cam cylinder 800, and at least two cam grooves of the cam grooves intersect with each other at a predetermined intersection 800t. When one of the at least three follower pins is positioned at the intersection, the other at least two follower pins engage with corresponding cam grooves of the at least three different kinds of cam grooves in a compression direction.

Abstract: A lens device includes a fixed lens, a rotatable lens barrel, and a base. The fixed lens includes at least one cam groove which has an opening portion. The rotatable lens barrel is sleeved within the fixed lens. The rotatable lens barrel includes at least one cam follower. The cam follower enters the cam groove through the opening portion and moves along the cam groove. The base is assembled to the fixed lens. The base includes at least one protruding structure. The protruding structure extends to the cam groove through the opening portion.

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 device includes a base barrel, first and second cam barrels connected rotatably to and movable relative to the base barrel, first and second lens barrels connected respectively to the first and second cam barrels, and a driving barrel surrounding and rotatable relative to the base barrel. Rotation of the driving barrel drives the first and second cam barrels to rotate synchronously and move individually along an axis, and therefore causes individual axial movements of the first and second lens barrels along the axis.

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 lens barrel assembly has a first groove formed in a stationary barrel. A second groove is formed in a rotatable barrel. A diaphragm control plate portion is disposed between an inner surface of the rotatable barrel and an iris diaphragm device in a rotatable manner in a circumferential direction, has an end portion connected to a driving ring. An engaging groove is formed in the diaphragm control plate portion to extend along the optical axis. An operable aperture ring is disposed outside the stationary barrel. A pin device has first and second end portions, the first end portion being secured fixedly to the aperture ring, the second end portion being inserted through the first and second grooves and the engaging groove, for operating upon rotation of the aperture ring to cause the engaging groove to rotate the diaphragm control plate portion to actuate the driving ring.

Abstract: A lens barrel includes a cam follower, a first cam ring with a cam slide protrusion in which a cam groove engages with the cam follower, a second cam ring so supported by the first cam ring that both are unrotatable around an axis parallel to an optical axis, a rectilinear guide ring so supported by the second cam ring that the second cam and rectilinear guide rings are rotatable around the axis and unmovable in the optical axis direction, a rectilinear guide guiding the rectilinear guide ring in the optical axis direction, a rectilinear cam ring in which a cam slide groove engages the cam slide protrusion and which guides the rectilinear guide in the optical axis direction, and a rotary ring so supported by the rectilinear cam ring that the rectilinear cam and rotary rings are rotatable around the axis and unmovable in the optical axis direction.

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.