Entries |
Document | Title | Date |
20080273252 | LENS BODY TUBE AND PROJECTOR HAVING THE SAME - A lens body tube comprising: a projection lens; a rotary cam tube that moves a variable power lens within the projection lens in an optical axis direction in accordance with a rotation of the rotary cam tube; a supporting tube, provided at an outside of the rotary cam tube, that rotatably supports the rotary cam tube; a zooming tube, rotatably provided at an outside of the supporting tube, that rotatably supports the supporting tube and rotates the rotary cam tube in accordance with a rotation of the zooming tube; a cam gear provided at an outer peripheral surface of the rotary cam tube; a zoom gear provided at an inner peripheral surface of the zooming tube; a relay gear that is rotatably provided between the rotary cam tube and the zooming tube, and meshes with the cam gear and the zoom gear to transmit a rotation movement of the zooming tube to the rotary cam tube; an insertion hole which is formed at the supporting tube and in which the relay gear is inserted; and a supporting potion, provided at the supporting tube, that rotatably supports the relay gear. | 11-06-2008 |
20080291549 | Image Capture Lens Feeding Device and Method of Assembly of Same - In a thin image capture lens feeding device, wear of constituent members does not readily occur, even when an operation of switching between a normal image capture mode and a macro image capture mode is repeated. By rotating a lens retention housing | 11-27-2008 |
20090059389 | ZOOM LENS DEVICE - A zoom lens device is reduced in size and capable of zoom operation with the number of steps large enough to display the value as a zoom lens. The zoom lens device comprises lens system (A) with a first lens group, a second lens group, and a third lens group arranged on optical axis (Z). It comprises zoom mechanism (E) for changing the focal distance of lens system (A) by changing the second lens group in the direction of optical axis (Z). It comprises focus mechanism (C) for adjusting the image forming position of lens system (A) by moving the third lens group | 03-05-2009 |
20090231730 | LENS BARREL AND IMAGING APPARATUS - A lens barrel includes a first tube and second tube, the first tube movable relative to the second tube by rotation of the second tube, an engaging unit disposed on the second tube, and a barrier driving unit disposed on an object side of the first tube that opens and close a barrier. The first tube is relatively moved in an optical axis direction by engaging with the engaging unit. The barrier is opened and closed when a first interlocking unit which is arranged on the barrier driving unit and a second interlocking unit which is arranged on the cam tube are shifted from a non-interlocking state to an interlocking state. When the first interlocking unit and second interlocking unit are in the interlocking state, at least a portion of the first interlocking unit and the engaging unit overlap with each other in a radial direction of the second tube. | 09-17-2009 |
20100002309 | LENS BARREL AND IMAGE PICKUP APPARATUS - A lens barrel that can be reduced in size and improve drive accuracy. A first cylindrical member is fixed. A rotatable second cylindrical member cam-engages with the first cylindrical member so as to move in an axial direction of an axial center. A third cylindrical member engaging with the first cylindrical member so as not to rotate can move in the axial direction by the rotation of the second cylindrical member. A fourth cylindrical member cam-engaging with the third cylindrical member engages with the second cylindrical member so as to move in the axial direction by following the rotation of the second cylindrical member. A lens holding member engaging with the third cylindrical member so as not to rotate relative to the third cylindrical member can move in the axial direction by cam-engaging with the fourth cylindrical member. | 01-07-2010 |
20100020412 | LENS BARREL AND CAMERA INCLUDING IT - A lens barrel includes a plurality of lens groups ( | 01-28-2010 |
20100033843 | IMAGE PICKUP APPARATUS - An image pickup apparatus which makes it possible to achieve reduction of the size in the optical axis direction thereof, and easily maintain the accuracy of rectilinear guidance between lenses. A cam barrel rotatable around an optical axis has a cam for controlling motion of a lens unit along the optical axis. A rectilinear motion guide unit rectilinearly guides the lens unit. The rectilinear motion guide unit has a rectilinear motion barrel fitted in the cam barrel for rectilinearly guiding the lens unit, and a rectilinear motion member that is rectilinearly guided by a rectilinear motion guide member disposed around the rectilinear motion barrel and is connected to the rectilinear motion barrel. The cam barrel is sandwiched from front and rear in a direction along the optical axis by the rectilinear motion guide unit, and is movable together therewith along the optical axis. | 02-11-2010 |
20100157440 | LENS BARREL UNIT AND IMAGING APPARATUS - A lens barrel unit including a lens barrel which has a plurality of lens groups and is set to a photographing state by moving at least a part of the lens groups to an object side and to a collapsed state by moving the at least the part of the lens groups to an image plane side and storing the lens groups, the lens barrel unit includes: a first supporting frame which retains at least one lens group of the lens groups; a second supporting frame which retains the first supporting frame movably in an optical axis direction of the lens barrel; a first supporting frame moving section which moves the first supporting frame in the optical axis direction of the lens barrel; and a fixed cylinder in which a main shaft which is capable of moving the second supporting frame in the optical axis direction of the lens barrel is provided. | 06-24-2010 |
20100214670 | LENS UNIT AND IMAGE SENSING APPARATUS INCORPORATED WITH THE SAME - In a lens unit | 08-26-2010 |
20100271712 | LENS APPARATUS AND IMAGING APPARATUS - A lens apparatus includes a first lens unit and a second lens unit that can respectively move in an optical axis direction, a first cam tube, a linearly moving guide tube that is arranged on an inner circumferential side of the first cam tube and configured to guide the second lens unit in the optical axis direction, a guide member that is configured to guide the linearly moving guide tube in the optical axis direction, a cylindrical member that is provided on an outer circumferential side of the first lens unit, and a second cam tube. The first lens unit includes a guide part configured to guide the cylindrical member in the optical axis direction. | 10-28-2010 |
20100328785 | LINEAR GUIDE MECHANISM OF LENS BARREL - A linear guide mechanism of a lens barrel, the lens barrel including a rotatable ring, and a linearly movable member which holds an optical element and moves linearly in an optical axis direction by rotation of the rotatable ring, the linear guide mechanism includes a plurality of partial linear guide members which linearly guide the linearly movable member in the optical axis direction. A movement range of the linearly movable member in the optical axis direction is shared by a plurality of different movement ranges, via which the linearly movable member is linearly guided in the optical axis direction by the plurality of partial linear guide members, respectively. | 12-30-2010 |
20110032626 | ZOOM LENS BARREL THAT ATTAINS A HIGHER PHOTOGRAPHING MAGNIFICATION - A zoom lens barrel capable of attaining a higher photographing magnification by reducing spacing between lens groups in a telephoto state. A first lens group barrel holds a first lens group. A second lens group holding member supported by a third cam barrel holds a second lens group. A spring member urges the holding member toward the first lens group. Cam followers are formed at an opposite end of the holding member from the first lens group. Cam grooves for engagement with the cam followers are formed on the third cam barrel. When the holding member is urged by the spring member in a non-shooting region, each cam groove is brought into contact via one cam surface with the associated cam follower. In a shooting region, the cam groove is brought into contact with the cam follower via two cam surfaces. | 02-10-2011 |
20110069397 | IMAGE PICKUP APPARATUS HAVING LENS BARREL - An image pickup apparatus includes a lens barrel. The lens barrel is configured to move first and second optical units in an optical axis direction for zooming. The lens barrel includes a linear movement cylinder that includes a key configured to guide the first optical unit, a rotation cylinder that includes an outer circumferential cam and an inner circumferential cam, the rotation cylinder being configured to rotate around an optical axis so as to move the first optical unit in the optical axis direction through the outer circumferential cam and so as to move the second optical unit in the optical axis direction through the inner circumferential cam, and a guide bar held by the linear movement cylinder and configured to guide the second optical unit in the optical axis direction. | 03-24-2011 |
20110128634 | Lens Barrel, Camera and Information Device - A cam locus of the cam surface on the image plane side of the first group cam groove of the rotating cylinder has an angle to a flat surface where the optical axis crosses perpendicularly. When the cam follower engages with the cam surface on the image plane side, an impact force is dispersed into the optical axis direction and the rotating direction of the rotating cylinder, and a load on the cam follower and male helicoid is reduced. When the first group lens system is pressed by a light load, the cam follower of the first group lens movement frame engages with the cam surface on the image plane side, and an angle of the cam surface is equal to an angle of a force occurring in the rotating direction. Therefore, the rotating cylinder does not rotate easily, and returns to its previous position when the load is removed. | 06-02-2011 |
20110141580 | IMAGE PICKUP APPARATUS HAVING LENS BARREL - An image pickup apparatus includes a lens barrel. The lens barrel is configured to move first and second optical units in an optical axis direction for zooming. The lens barrel includes a linear movement cylinder that includes a key configured to guide the first optical unit, a rotation cylinder that includes an outer circumferential cam and an inner circumferential cam, the rotation cylinder being configured to rotate around an optical axis so as to move the first optical unit in the optical axis direction through the outer circumferential cam and so as to move the second optical unit in the optical axis direction through the inner circumferential cam, and a guide bar held by the linear movement cylinder and configured to guide the second optical unit in the optical axis direction. | 06-16-2011 |
20110292523 | LENS BARREL - A lens barrel that is capable of miniaturizing an image pickup apparatus by decreasing an area that is occupied by transmission mechanisms. A lens group is movable along a first optical axis. A cam barrel moves the lens group. A first transmission mechanism transmits a driving force of a driving source to the cam barrel. A bending optical element is movable along a second optical axis that intersects the first optical axis. An element driver moves the bending optical element between a taking position and an escape position along the second optical axis. A second transmission mechanism transmits a driving force of a driving source to the element driver. The second transmission mechanism is arranged within an arrangement area of the first transmission mechanism when viewing in the direction of the first optical axis. | 12-01-2011 |
20120063005 | MOTOR HAVING SMALL SIZE AND HIGH OUTPUT, AND LIGHT AMOUNT ADJUSTMENT DEVICE EQUIPPED WITH THE MOTOR - 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. | 03-15-2012 |
20120162782 | COMPACT ZOOM LENS BARREL - A zoom lens barrel includes a fixed barrel, a guide barrel received in the fixed barrel, a cam barrel received in the fixed barrel and housing the guide barrel, a zoom barrel sandwiched between the guide barrel and the cam barrel, and a lens cover covering on the zoom barrel. The cam barrel includes a flange radially formed on an end close to the lens cover. The zoom barrel includes a ring portion protruding out from an end close to the fixed barrel. A step surface is formed between the outer side surface of the zoom barrel and that of the ring portion. When the zoom lens barrel is in an unfolded state, the step surface interferingly resists against a bottom surface of the flange, to limit an axial movement between the cam barrel and the zoom barrel. | 06-28-2012 |
20120200941 | ZOOM TYPE LENS BARREL AND IMAGE PICKUP APPARATUS - 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. | 08-09-2012 |
20120275036 | LENS BARREL THAT CHANGES FOCAL LENGTH AND IMAGE PICKUP APPARATUS EQUIPPED WITH LENS BARREL - A lens barrel that is capable of decreasing a barrel length under a retracted condition by simplifying a configuration. The lens barrel changes a focal length by moving first and second lens groups in an optical axis direction. A light-amount adjusting member is located between the first and second lens groups. First, second, third holding frames hold the first lens group, the second lens group, and the light-amount adjusting member, respectively. A cam mechanism moves the first, second, and third holding frames in the optical axis direction so that a part of the second lens group is inserted into the aperture of the light-amount adjusting member and concave and convex surfaces of the first and second lens groups are overlapped in the optical axis direction under a retracted condition. The aperture diameter of the light-amount adjusting member is enlarged when shifting to the retracted condition from a shooting condition. | 11-01-2012 |
20130308202 | LENS BARREL - A lens barrel comprises a first frame, a barrier mechanism, and a second frame. The barrier mechanism is fixed to the first frame and blocks an opening. The second frame uses a cam mechanism to guide the first frame in the optical axis direction. The second frame has a cylindrical cam mechanism part that constitutes a cam mechanism. The cam mechanism part is provided with a thin-wall part that is partially thinner in the radial direction. A fixing portion of the barrier mechanism goes into spaces between the thin-wall part and the first frame. | 11-21-2013 |
20140153112 | LENS BARREL - The present lens barrel is provided with a cylindrical moving frame and a cylindrical cam frame disposed on the inner periphery of the moving frame. The cylindrical moving frame has a first cam follower and a second cam follower. The first cam follower projects radially from the inner peripheral surface or the outer peripheral surface. The second cam follower projects radially further from the top of the first cam follower. The cylindrical cam frame is disposed on the inner periphery or the outer periphery of the moving frame, and has a first cam and a second cam on the outer peripheral surface side or the inner peripheral surface side. The first cam engages with the first cam follower, and has a cam surface only on the image plane side in the optical axis direction. The second cam is formed on the bottom surface of the first cam, and engages with the second cam follower. | 06-05-2014 |
20140185149 | LENS BARREL - A lend barrel includes a first frame having a cam follower and a second frame having a cam engaged with the cam follower. The cam includes a first section extending in a rotational direction of the second frame, a second section continued with the first section and inclined to the rotational direction of the second frame, and a third section continued with the first section on a side opposite of the second section to the first section and inclined to the rotational direction. The cam follower includes a first surface arranged to face the first section of the cam, a second surface continuously formed with the first surface and inclined to the rotational direction, and a third surface continuously formed with the first surface on a side opposite of the second surface to the first surface and inclined to the rotational direction. | 07-03-2014 |
20160018622 | OPTICAL APPARATUS - An optical apparatus includes a driving unit, a holder holding the driving unit, a moving member holding an optical member and movable by drive of the driving unit, and a guide fixed to the holder in parallel to an optical axis direction. The driving unit is fixed to the holder by a screw and a nut. The nut includes a first plane part. The nut is disposed so that the first plane part of the nut is substantially orthogonal to a line connecting a center of the guide and centers of the screw and the nut when viewed in the optical axis direction. | 01-21-2016 |