WO2020040112A1 - レンズ鏡筒及び撮像装置 - Google Patents
レンズ鏡筒及び撮像装置 Download PDFInfo
- Publication number
- WO2020040112A1 WO2020040112A1 PCT/JP2019/032365 JP2019032365W WO2020040112A1 WO 2020040112 A1 WO2020040112 A1 WO 2020040112A1 JP 2019032365 W JP2019032365 W JP 2019032365W WO 2020040112 A1 WO2020040112 A1 WO 2020040112A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frame
- urging
- lens barrel
- optical axis
- moving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
- G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
- G03B17/565—Optical accessories, e.g. converters for close-up photography, tele-convertors, wide-angle convertors
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B5/02—Lateral adjustment of lens
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
- G03B2205/0046—Movement of one or more optical elements for zooming
Definitions
- the present invention relates to a lens barrel and an imaging device. This application claims priority based on Japanese Patent Application No. 2018-154296 for which it applied on August 20, 2018, and uses the content here.
- a lens barrel is provided, the lens barrel including: a movable member arranged to be movable in an optical axis direction and transmitting an urging force of the urging member to the other of the first frame and the second frame.
- a fixed frame a rotating frame rotatably disposed around the optical axis, a biasing member held on one of the fixed frame and the rotating frame, A movable member disposed movably, wherein the other of the fixed frame and the rotating frame has a first surface and a second surface, and the urging member is configured such that the movable member is the first surface.
- a lens barrel in which the amount of deflection or the total length changes between a state in which the lens barrel is in contact with the second surface and a state in which the lens barrel is in contact with the second surface.
- a fixed frame a rotating frame rotatably arranged around the optical axis, an urging member held on one of the fixed frame and the rotating frame, and an urging unit
- a movable member that is urged and arranged to be movable in the optical axis direction
- the other of the fixed frame and the rotating frame has a first surface and a second surface
- the urging member is
- a lens barrel is provided in which the amount of deflection or the total length changes between a state in which the moving member contacts the first surface and a state in which the moving member contacts the second surface.
- a fixed frame a rotating frame rotatably arranged around the optical axis, an urging member held on one of the fixed frame and the rotating frame, A movable member that is movably disposed and transmits the urging force of the urging member to the other of the fixed frame and the rotating frame.
- a first member a second member having a relation of relatively moving in at least a first direction between the first member and one of the first member and the second member.
- Lens mirror comprising: a biasing member held by the first member; and a moving member arranged to be movable at least along the other of the first member and the second member, and transmitting the biasing force of the biasing member to the other member.
- a tube is provided.
- a lens barrel capable of switching between a shooting state and a reduced cylinder state, comprising a first frame, and a second frame rotatable relative to the first frame.
- An urging portion that is held by one of the first frame and the second frame and has an urging force in a direction of contraction; and an urging portion that is held by the urging portion and is the other of the first frame and the second frame.
- a contact portion capable of contacting the lens barrel.
- a lens barrel comprising: a contact portion; and a contact portion capable of making a surface contact with the other of the first frame and the second frame by the urging portion.
- an imaging apparatus including the lens barrel described above and a main body including an imaging element.
- FIG. 2 is a schematic diagram illustrating a configuration of a main part in a lens barrel. It is a schematic diagram which shows the relative movement of a moving piece. It is a figure showing the example of the shape of the hollow provided in the 2nd member, and / or the shape of the moving piece. It is a figure which shows the example of the shape of the protrusion part of a moving piece. It is sectional drawing which shows the telephoto end imaging state of a lens-barrel, and a collapsed state. It is a schematic diagram which shows an urging mechanism. It is a perspective view of a fixed frame and a zoom ring. It is another perspective view of a fixed frame and a zoom ring. It is a figure showing a moving piece.
- FIG. 1 is a schematic diagram illustrating a configuration of a main part in a lens barrel. It is a schematic diagram which shows the relative movement of a moving piece. It is a figure showing the example of the shape of the hollow provided in the 2nd member, and / or
- FIG. 2 is a partial cross-sectional view of a lens barrel. It is a figure showing the installation structure of an urging member. It is a figure which shows another installation structure of an urging member. It is a figure which shows an example of a camera (imaging device) typically.
- FIG. 1 shows a general configuration of the lens barrel 1.
- the lens barrel 1 includes a first member (first frame) 70, a second member (second frame) 80, and an urging mechanism 300.
- the urging mechanism 300 includes an urging member 310 and a moving piece (moving member) 320.
- the first member 70 and the second member 80 have a relationship that the first member 70 and the second member 80 can relatively move at least in the D1 direction (first direction).
- the direction D1 can be set to any direction with respect to the optical axis direction of the lens barrel 1.
- the D1 direction is parallel to a predetermined plane that intersects or is perpendicular to the optical axis direction of the lens barrel 1 (reducing cylinder direction, thrust direction, vertical direction).
- the direction D1 is parallel to the radial direction (lateral direction) of the lens barrel 1.
- the direction D1 is parallel to the optical axis direction of the lens barrel 1 (reducing cylinder direction, thrust direction, vertical direction).
- the direction D1 is parallel to a predetermined plane that intersects or is perpendicular to the radial direction (lateral direction) of the lens barrel 1.
- the D1 direction is a circumferential direction around the optical axis, a circumferential direction around a predetermined axis different from the optical axis, a linear direction intersecting with the optical axis, a linear direction inclined with respect to the optical axis, or parallel to the optical axis.
- the urging member (urging unit, urging body, spring) 310 is held, supported, and / or fixed to the first member 70.
- any kind of spring can be applied.
- a coil spring compression coil spring or extension coil spring
- a plate spring a torsion spring
- a gas spring air spring
- a magnetic spring or the like can be applied.
- One kind of urging member 310 is used alone, or a plurality of kinds of urging members 310 are used in combination.
- the urging member 310 is arranged on the first member 70 so as to exert the urging force (F1, F2).
- the axis of the urging member 310 is arranged along the direction D2 (second direction). In another embodiment, the axis of the biasing member 310 is disposed along a direction different from the D2 direction.
- the direction D2 is a direction that crosses the direction D1 or is perpendicular to the direction D1. In one embodiment, the direction D2 is parallel to the optical axis direction of the lens barrel 1. In another embodiment, the direction D2 is inclined with respect to the optical axis direction of the lens barrel 1, parallel to the radial direction of the lens barrel 1, or intersects with the optical axis direction of the lens barrel 1. It is parallel to a predetermined plane or a predetermined plane perpendicular to the optical axis direction.
- the direction D2 can be a linear direction parallel to the optical axis, a linear direction inclined with respect to the optical axis, or a linear direction intersecting the optical axis.
- the moving piece (moving member, contact portion, contact piece, physical contact) 320 is arranged so as to be movable at least in the direction D2.
- the axis of movement of the moving piece 320 is arranged parallel and / or coaxial with the axis of the biasing member 310. In this case, in the direction intersecting the moving axis of the moving piece 320, it is advantageous for downsizing of the urging mechanism 300 and / or for simplification of the configuration of the urging mechanism 300.
- the axis of movement of the moving piece 320 is disposed non-parallel and / or non-coaxial with the axis of the biasing member 310. In this case, it is advantageous to make the urging mechanism 300 compact in a direction along the moving axis of the moving piece 320.
- the moving piece 320 receives the urging force exerted by the urging member 310.
- One or more urging members 310 are provided for one moving piece 320.
- one urging member 310 is provided for a plurality of moving pieces 320.
- the moving piece 320 is pushed toward the second member 80 by the force from the urging member 310.
- a force from the urging member 310 acts on the second member 80 at least along the direction D2.
- Such acting force can be used, for example, to apply a load in a D2 direction to a specific member.
- the load in the D2 direction contributes to the holding force between the two members and / or the user's operational feeling when the user manually operates the relative movement between the two members.
- LA1 is the moving range of the moving piece 320 in the D2 direction (moving length, maximum moving range, and moving amount in the D2 direction).
- LA2 is a length in the direction D2 corresponding to a region (region BA1) set on the first member 70 for the urging member 310.
- the area BA1 includes an arrangement area of the urging member 310, and LA2 is a distance (maximum distance) from one end to the other end in the direction D2 of the urging member 310 arranged in the area BA1.
- LA2 can be about 300, 400, 500, 600, 700, 800, 900, or 1000% or more relative to LA1.
- LA1 can be 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, or 1/10 or less than LA2.
- the above numerical values are representative examples, and other numerical values can be applied in other examples.
- the biasing mechanism 300 includes a biasing member 310 having a relatively large spring length (free length (full length, free height)) in a no-load state and a relatively small maximum width or outer diameter. be able to.
- the slim-size biasing member 310 is preferably applied to a small-sized installation space, and is advantageous for a flexible design.
- the biasing member 310 having a large free length is preferably applied to a high load condition.
- the lens barrel 1 is securely held by the high holding force using the urging mechanism 300.
- the biasing member 310 is a compression coil spring, and the outer diameter (or maximum width) of the biasing member 310 is LA3 (not shown), and the free length of the biasing member 310 is LA4 (not shown).
- LA4 can be about 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000, 3000, 4000% or more of LA3.
- LA3 is ⁇ or more of LA4 and ⁇ ⁇ , 6, 8, 1/10, 1/12, 1/14, 1/16, 1/18, 1/20, 1 / 30 or 1/40 or less.
- the above numerical values are representative examples, and other numerical values can be applied in other examples. Since the ratio of the free length to the outer diameter (slim ratio) is high, the slim urging member 310 that can handle a high load and is slim is provided.
- the biasing member 310 is a compression coil spring, and the maximum deflection (the maximum deflection used, the maximum deflection, the total deflection) which is the displacement of the biasing member 310 from a no-load state (free length) to the maximum operating position.
- LA5 is about 200, 300, 400, 500, 600, 700, 800, 900, or 1000% or more of LA1 (moving range of the moving piece 320). it can.
- LA1 can be less than 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, or 1/10 of LA5.
- the above numerical values are representative examples, and other numerical values can be applied in other examples. That is, the biasing member 310 has a relatively large maximum deflection with respect to the moving range of the moving piece 320.
- the ratio of LA5 to LA1 (permissible deflection ratio) to be relatively high, a change in load with respect to a change in the amount of deflection is suppressed. That is, a large change in the load according to a slight change in the position of the moving piece 320 in the direction D2 is avoided.
- the urging mechanism 300 the movement of the moving piece 320 can be smoothly absorbed by the urging member 310 while the high load state is maintained.
- the operational feeling of the user is improved while maintaining high holding ability using the load (force) of the urging mechanism 300. Further, such an urging mechanism 300 is advantageous for assembly and adjustment.
- the urging member 310 is arranged along the wall of the first member 70, and at least a part of the urging member 310 is arranged within a range of the thickness of the wall of the first member 70.
- the main extending direction of the entire shape of the urging member 310 is arranged along the extending direction of the wall of the first member 70, and at least a part of the urging member 310 is located inside the wall of the first member 70. Be placed.
- the protruding height of the urging mechanism 300 from the wall surface is suppressed, and the urging member 310 is prevented from unnecessarily interfering with other members.
- the first member 70 is provided with a hole (slot, groove) 110 for the urging member 310 and the moving piece 320.
- the hole 110 may be a through hole or a non-through hole. Further, the hole 110 may have a groove shape provided at an end of the first member 70.
- the hole 110 for the urging member 310 and the hole 110 for the moving piece 320 may be connected to each other or may be provided separately. At least a part of the urging member 310 and at least a part of the moving piece 320 are arranged in the hole 110. For example, the entirety or most of the slim-sized biasing member 310 can be accommodated in the hole 110.
- the shape of the hole 110 can be arbitrarily set. When the moving axis of the moving piece 320 is parallel and / or coaxial with the axis of the biasing member 310, the hole 110 may have a simple shape and its opening area may be minimized.
- the hole 110 has slide walls 121 and 122 for guiding the movement of the moving piece 320.
- the movement of the moving piece 320 in a direction intersecting with the moving direction is restricted by the restricting portions provided on the slide walls 121 and 122.
- each of the slide walls 121 and 122 has a wall surface provided in parallel with the moving axis of the moving piece 320 as a restricting portion.
- the moving piece 320 moves along the wall surfaces of the sliding walls 121 and 122.
- the sliding motion of the moving piece 320 is realized by the sliding walls 121 and 122.
- the moving piece 320 has slide surfaces 321 and 322 that face the wall surfaces of the slide walls 121 and 122, respectively.
- the slide surfaces 321 and 322 are provided parallel to the movement axis of the movement piece 320.
- LA6 is about 300, 400, 500, and LA1 (the movement range of the movement piece 320 in the direction D2). It can be 600, 700, 800, 900, or 1000% or more.
- LA1 can be 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/9, or 1/10 or less than LA6.
- the above numerical values are representative examples, and other numerical values can be applied in other examples.
- the sliding surfaces 321 and 322 reliably restrict the movement of the moving piece 320 in a direction intersecting the moving direction over the entire moving range.
- the urging mechanism 300 the occurrence of twisting when the moving piece 320 is moved is avoided, and a smoother movement of the moving piece 320 is achieved with a simple configuration.
- the moving piece 320 is made of a material different from that of the urging member 310. Further, the posture of the moving piece 320 can be regulated and / or controlled substantially independently of the biasing member 310. That is, the posture of the moving piece 320 can be regulated and / or controlled with high accuracy. As a result, as described later, surface contact between the first member 70 and the second member 80 is reliably achieved. Alternatively, highly accurate torque control for relative movement, which will be described later, is reliably achieved.
- the moving piece 320 can be positioned in the D2 direction by directly or indirectly contacting the second member 80 or another member different from the second member 80.
- the amount of deflection of the urging member 310 (and the urging force (spring load) of the urging member 310) changes according to the change in the position of the moving piece 320 in the direction D2.
- the second member 80 has a first surface 211 and a second surface 212 whose positions in the D1 direction (first direction) are different from each other.
- the first surface 211 and the second surface 212 are each parallel to the D1 direction, and have different positions in the D2 direction (second direction).
- 1A in a state where the moving piece 320 is in contact with the first surface 211, the urging member 310 exerts an urging force F1.
- a force (operating force, torque) T1 is required for relative movement between the first member 70 and the second member 80.
- the moving piece 320 and the first surface 211 can be in contact with each other. By making contact with each other, the urging force F1 can be efficiently transmitted to the second member 80.
- the urging member 310 having the increased flexure exerts a urging force F2 greater than F1.
- the urging force F1 of the urging member 310 when the moving piece 320 is in contact with the first surface 211 is equal to the urging force F1 of the urging member 310 when the moving member 320 is in contact with the second surface 212. It is smaller than the urging force F2.
- the urging force of the urging member 310 in a state where the moving piece 320 is in contact with a fifth surface 215 described later is equivalent to the urging member 310 in a state where the moving member 320 is in contact with the second surface 212.
- a force (operating force, torque) T2 larger than T1 is required for relative movement between the first member 70 and the second member 80.
- the moving piece 320 and the second surface 212 can be in contact with each other. By making contact with each other, the urging force F2 can be efficiently transmitted to the second member 80.
- the second member 80 further has a third surface 213 disposed between the first surface 211 and the second surface 212 in the direction D1.
- the third surface 213 has an inclined surface inclined with respect to the first surface 211 and the second surface 212, and functions as a transition region between the first surface 211 and the second surface 212.
- the second member 80 connects the first surface 211 and the second surface 212 and has a third surface 213 inclined with respect to the optical axis direction.
- the switching operation force is set high, and as a result, the mechanism and / or parts required by the conventional lens barrel such as the conventional zoom lock mechanism are required. Omission becomes feasible.
- the moving piece 320 and the third surface 203 can be in contact with each other. By contacting the surfaces, the urging force in the direction D2 can be efficiently transmitted to the second member 80. Further, the force T3 required when the moving piece 320 moves from the first surface 211 to the second surface 212 can be efficiently generated or appropriately adjusted.
- the second member 80 has a first surface 211, a second surface 212, a third surface 213, a fourth surface 214, a fifth surface 215, and positions different from each other in the D1 direction. It has a sixth surface 216 and a seventh surface 217.
- the fourth surface 214, the first surface 211, the third surface 213, the second surface 212, the sixth surface 216, the fifth surface 215, and the seventh surface 217 are arranged in this order along the direction D1.
- the first surface 211 and the second surface 212 are each substantially parallel to the D1 direction, and have different positions in the D2 direction.
- the third surface 213 has an inclined surface inclined with respect to the D1 direction, and functions as a transition region between the first surface 211 and the second surface 212.
- the fourth surface 214 has an inclined surface inclined with respect to the D1 direction. The direction of the inclination of the fourth surface 214 is different from the direction of the inclination of the third surface 213.
- the moving piece 320 has a first surface 311, a second surface 312, and a third surface 313.
- the first surface 311 is arranged parallel to the direction D1.
- the second surface 312 has an inclined surface inclined with respect to the D1 direction.
- the third surface 313 has an inclined surface inclined with respect to the D1 direction.
- the moving piece 320 has a protruding portion protruding from the main body in the direction D2, and a first surface 311, a second surface 312, and a third surface 313 are formed on the protruding portion.
- the direction of the inclination of the second surface 312 is different from the direction of the inclination of the third surface 313.
- the second surface (inclined surface) 312 of the moving piece 320 is arranged parallel to the third surface (inclined surface) 213 of the second member 80.
- the inclination of the third surface 213 of the second member 80 with respect to the urging direction of the urging member 310 and the inclination of the second surface 312 of the moving piece 320 with respect to the urging direction of the urging member 310 are substantially parallel.
- the third surface 213 and the second surface 312 are substantially parallel.
- the third surface (inclined surface) 313 of the moving piece 320 is arranged in parallel with the fourth surface (inclined surface) 214 and the sixth surface (inclined surface) 216 of the second member 80.
- the fourth surface 214 and the sixth surface 216 are substantially parallel to the third surface 313, respectively. Since the two surfaces abutting each other are arranged in parallel, substantial surface contact between the second member 80 and the moving piece 320 is realized. For example, in surface contact, the two surfaces approach each other due to relative movement between the two surfaces while maintaining a state where the two surfaces are arranged in parallel, and the two surfaces contact each other.
- the surface contact relates to a manual operation of the relative movement between the first member 70 and the second member 80, and contributes to an improvement in a user's operational feeling.
- two surfaces that come into surface contact with each other can have a shape other than a flat surface.
- at least a part of the surface to be contacted may be subjected to a predetermined surface treatment for the purpose of improving smoothness, improving slippage, preventing wear, preventing sound, and / or reducing noise.
- the fifth surface 215 of the second member 80 has an inclined surface (inclination angle ⁇ ) slightly inclined with respect to the direction D1.
- the sixth surface 216 and the seventh surface of the second member 80 each have an inclined surface inclined with respect to the D1 direction.
- the sixth surface 216 has an inclined surface that is inclined with respect to the second surface 212 and the fifth surface 215, and functions as a transition region between the second surface 212 and the fifth surface 215.
- the second member 80 connects the second surface 212 and the fifth surface 215 and has a sixth surface 216 inclined with respect to the optical axis direction.
- the direction of the inclination of the sixth surface 216 is different from the direction of the inclination of the seventh surface.
- the sixth surface (inclined surface) 216 is arranged parallel to the fourth surface (inclined surface) 214.
- the seventh surface (inclined surface) 217 is arranged in parallel with the third surface (inclined surface) 213.
- the slope of the sixth surface 216 has the same slope as the slope of the seventh surface.
- the slope of the sixth surface 216 has a different slope from the slope of the seventh surface.
- the moving piece 320 is positioned in a non-contact state with the second member 80.
- a gap is provided between the first surface 211 of the second member 80 and the first surface 311 of the moving piece 320 in the direction D2.
- the first surface 211 of the second member 80 and the first surface 311 of the moving piece 320 do not come into contact with each other, it is possible to avoid generating an unnecessary force in the direction D2.
- the third surface 213 of the second member 80 is brought into contact with the second surface 312 of the moving piece 320, a force in the direction D2 is generated even if the first surface 211 does not contact the first surface 311. Can be.
- This state is realized by bringing the moving piece 320 into contact with the first member 70 or a third member different from the first member 70 and the second member 80.
- the urging force of the urging member 310 (FIG. 1) is prevented from acting on the second member 80.
- the third surface 213 which is a transition region between the first surface 211 and the second surface 212 of the second member 80 is arranged perpendicular to the direction D1.
- the force T3 required when the moving piece 320 moves from the first surface 211 to the second surface 212 can be set large.
- the third surface 213 which is a transition region between the first surface 211 and the second surface 212 of the second member 80 has a convex contour.
- the third surface 213 which is a transition region between the first surface 211 and the second surface 212 of the second member 80 has a concave contour.
- the second surface 212 of the second member 80 has a non-smooth surface.
- the second surface 212 has a roughened surface.
- a plurality of protrusions, holes, grooves, and / or depressions are provided on the second surface 212.
- Such a configuration contributes to the user's perception of a change in the operational feeling regarding the manual operation of the relative movement between the first member 70 and the second member 80.
- another surface different from the second surface 212 can have a non-smooth surface.
- the protruding portion (contact portion) 340 of the moving piece 320 has an overall convex contour.
- the protruding portion (contact portion) 340 of the moving piece 320 has a partially convex contour.
- FIG. 5 is a sectional view showing the telephoto end (tele end) imaging state and the collapsed state (reduced cylinder state, standby state) of the lens barrel 1.
- the upper half of the drawing shows the lens barrel 1 in the collapsed state
- the lower half of the drawing shows the lens barrel 1 in the telephoto end imaging state.
- the lens barrel 1 is detachable from the camera body.
- the lens barrel 1 may be a non-detachable camera fixed to the camera body.
- a camera main body (main body) 510 includes an imaging element 520, a display unit 530, and the like.
- the lens barrel 1 includes a variable power optical system including a plurality of lens groups.
- the lens barrel 1 includes a zoom lens including a first lens unit L1, a second lens unit L2, a third lens unit L3, a fourth lens unit L4, and a fifth lens unit L5. From the subject side toward the image plane side, the first group lens L1, the second group lens L2, the third group lens L3, the fourth group lens L4, and the fifth group lens L5 are arranged in this order.
- the first lens unit L1, the second lens unit L2, the third lens unit L3, the fourth lens unit L4, and the fifth lens unit L5 move in the optical axis direction during zooming.
- the fourth group lens L4 includes a focus lens, and moves in the optical axis direction during focusing.
- the lens barrel 1 includes a first movable barrel 10, a second movable barrel 20, a rectilinear barrel 30, a third movable barrel 35, a fourth movable barrel 40, and a cam barrel (third frame) 50.
- a fixed cylinder 60 a fixed frame (first member, first frame) 70, a zoom ring (second member, rotating frame, second frame) 80, and a mount 90.
- the first movable cylinder 10 is movable with respect to the fixed frame 70 along the optical axis (OA).
- the second movable barrel 20 is movable with respect to the fixed frame 70 along the optical axis.
- the rectilinear barrel 30 is movable with respect to the fixed frame 70 along the optical axis.
- the third moving cylinder 35 is movable with respect to the fixed frame 70 along the optical axis.
- the fourth movable cylinder 40 is movable with respect to the fixed frame 70 along the optical axis.
- the cam barrel 50 is rotatable with respect to the fixed frame 70 around the optical axis, and is movable with respect to the fixed frame 70 along the optical axis.
- the first group lens L1 is held by the first lens frame 11.
- the first lens frame 11 is held by the first moving cylinder 10.
- the second group lens L2 is held by the second lens frame 21.
- the second lens frame 21 is held by the second movable cylinder 20.
- the third lens group L3 is held by the third lens frame 31.
- the fifth group lens L5 is held by the fifth lens frame 51.
- the third lens frame 31 and the fifth lens frame 51 are held by the third movable barrel 35.
- the third group lens L3 and the fifth group lens L5 are held in separate moving cylinders, and can be configured to be independently movable.
- the fourth group lens L4 is held by the fourth lens frame 41.
- the fourth lens frame 41 is held by the fourth movable cylinder 40.
- the fixed cylinder 60 is held by the fixed frame 70.
- the fixed frame 70 is held by the mount 90.
- the mount 90 is held by the camera body.
- the lens barrel 1 is connected to a camera body via a mount 90.
- the zoom ring 80 is rotatable around the optical axis within a predetermined range with respect to the fixed frame 70.
- the zoom ring 80 can be rotated by a user (photographer).
- the cam barrel 50 has a zoom interlocking pin (not shown) that is engaged with a linear groove (not shown) provided on the zoom ring 80.
- the cam barrel 50 is arranged on the inner peripheral side with respect to the fixed frame 70 and / or the zoom ring 80.
- the cam barrel 50 has a cam groove 52 that is engaged with a cam follower 62 provided on the fixed barrel 60.
- the cam barrel 50 rotates around the optical axis with the rotation of the zoom ring 80 and moves along the optical axis.
- the straight-moving barrel 30 has a circumferential groove 32 that is engaged with a connecting pin 53 provided on the cam barrel 50.
- the rectilinear barrel 30 has a key 33 that is engaged with a linear groove 63 provided in the fixed barrel 60.
- the straight advancing barrel 30 moves along the optical axis without rotation with the movement of the cam barrel 50 in the optical axis direction.
- the second movable cylinder 20 has the cam follower 22 that is engaged with the cam groove 54 provided in the cam cylinder 50.
- the second movable cylinder 20 has a key (not shown) that is engaged with a linear groove (not shown) provided in the fixed cylinder 60.
- the second movable barrel 20 moves along the optical axis without rotation with the rotation of the cam barrel 50.
- the first moving cylinder 10 has a cam follower (not shown) that is engaged with a cam groove (not shown) provided in the cam cylinder 50. Further, the first moving cylinder 10 has a connecting pin (not shown) that engages with a linear groove (not shown) provided in the linear cylinder 30. The first moving cylinder 10 moves along the optical axis without rotation with the rotation of the cam cylinder 50.
- the third movable cylinder 35 has a cam follower (not shown) that penetrates through the fixed cylinder 60 and is engaged with a cam groove 56 provided in the cam cylinder 50.
- the third moving cylinder 35 has a key (not shown) that is engaged with a linear groove (not shown) provided in the second moving cylinder 20.
- the third moving cylinder 35 moves along the optical axis without rotation with the rotation of the cam cylinder 50.
- the fourth moving cylinder 40 has a cam follower (not shown) that penetrates through the third moving cylinder 35 and is engaged with a cam groove 57 provided in the cam cylinder 50.
- the fourth moving cylinder 40 has a key (not shown) that is engaged with a linear groove (not shown) provided in the third moving cylinder 35.
- the fourth moving cylinder 40 moves along the optical axis without rotation with the rotation of the cam cylinder 50.
- the fourth movable cylinder 40 is provided with an actuator (focus motor) 45 and a position detection unit (position sensor) (not shown).
- the fourth group lens L4 and the fourth lens frame 41 can be moved along the optical axis by the actuator 45 in addition to the movement accompanying the rotation of the zoom ring 80.
- a stepping motor is applied as the actuator 45.
- the actuator 45 can be an ultrasonic motor, a voice coil motor, a piezoelectric actuator, a linear actuator, or the like.
- the position detecting unit is, for example, a photo interrupter.
- the focal length of the lens barrel 1 changes due to zooming.
- the focusing distance (or focus position) of the lens barrel 1 changes by focusing.
- the shooting distance is the distance from the camera to the subject. More specifically, it is the distance from the reference position of the camera to the focused subject.
- the focus position is the position of the focused subject.
- the lens barrel 1 is a so-called inner focus type in which a fourth group lens L4 including a focus lens is disposed between a third group lens L3 and a fifth group lens L5 which is a zoom lens.
- the lens barrel 1 has a normal photographing state (non-contracted state) including a telephoto side state (tele state) and a wide-angle side state (wide state), and a non-photographing state (contracted state) including a retracted state.
- the photographing mode can be switched between. These states are switched by the rotation operation of the zoom ring 80 by the user. In the normal shooting state, the focal length changes by rotating the zoom ring 80 between the telephoto end and the wide-angle end.
- the lens barrel 1 can include the above-described biasing mechanism 300 for the purpose of appropriately controlling the operation torque of the zoom ring 80 and the like.
- the fixed frame 70 is applied as the first member 70 and the zoom ring 80 is applied as the second member 80 will be described.
- the zoom ring 80 may be applied as the first member 70
- the fixed frame 70 may be applied as the second member 80.
- FIG. 2 shows the retracted state
- (c) shows the wide-end state in the photographing mode
- (d) shows the tele-end state in the photographing mode.
- the shooting mode switches between a normal shooting state (shooting mode, use state) and a non-shooting state (collapsed state, standby state).
- the direction D1 is a circumferential direction around the optical axis
- the direction D2 is a direction along the optical axis (optical axis direction).
- the moving piece 320 is in contact with the first surface 211 and / or the third surface 213 of the zoom ring 80.
- a depression 390 surrounded by a first surface 211, a second surface 212, and a third surface 213 is formed at an axial end (axial end surface) of the zoom ring 80.
- the tip of the moving piece 320 is stored.
- the urging force (load) of the urging member 310 acts on the moving piece 320 in the optical axis direction.
- the moving piece 320 is held by the urging member 310 so as to be movable in the direction in which the lens barrel 1 contracts (optical axis direction).
- the biasing member 310 is a compression coil spring.
- the urging member 310 is arranged on the urging mechanism 300 under a high load condition.
- a strong force for rotating the zoom ring 80 in the circumferential direction is required.
- the switching torque is set high using a high biasing force (high load) in the optical axis direction, and the omission of the conventional zoom lock mechanism is realized. That is, even when the camera provided with the relatively large lens barrel 1 is arranged so that the front lens faces downward (for example, when the camera body is lowered from the neck or shoulder), the third surface 213 or the fourth surface 213 is not required.
- the movement of the moving piece 320 is regulated by the surface 214.
- the user turns the zoom ring 80 so that a predetermined lens is extended, so that the lens barrel 1 changes from the non-photographing state (collapsed state, standby state). It enters the switching area to the normal shooting state (shooting mode, use state). At this time, the moving piece 320 slides on the second surface 212 of the zoom ring 80.
- the force (torque) for rotating the zoom ring 80 in the circumferential direction is smaller than the first switching torque described above.
- the moving piece 320 is in contact with the fifth surface 215 and / or the sixth surface 216 of the zoom ring 80.
- a recess surrounded by the fifth surface 215, the sixth surface 216, and the seventh surface 217 is formed at the shaft end (shaft end surface) of the zoom ring 80, and the tip of the moving piece 320 is housed in the recess. I have.
- the urging force of the urging member 310 acts on the moving piece 320 in the optical axis direction, and the zoom ring 80 is pushed by the moving piece 320 in the optical axis direction.
- the zoom ring 80 is engaged with the cam barrel 50 (see FIG. 5).
- the urging member 310 can be urged at least via the moving piece 320 and the zoom ring 80 in a direction in which the cam cylinder 50 is contracted (optical axis direction).
- the force in the optical axis direction received by the zoom ring 80 is transmitted to the cam barrel 50.
- the urging member 310 urges the cam barrel 50 in the optical axis direction via the moving piece 320 and the zoom ring 80.
- the force in the optical axis direction can be transmitted to another frame or cylinder via the cam cylinder 50.
- the displacement of the members in the optical axis direction due to the gap between the members (the occurrence of backlash) is prevented. This is advantageous for improving the optical performance of the lens barrel 1.
- the distance to the fixed frame 70 is a first distance 211 that is a first distance, a second distance 212 that is a second distance, and a third distance.
- the moving piece 320 can be in contact with at least one of the second surface 212, the third surface 213, and the sixth surface 216.
- the moving piece 320 includes a first surface 311 capable of contacting at least one of the first surface 211, the second surface 212, and the fifth surface 215, a second surface 312 capable of contacting the third surface 213, and a sixth surface. 216 and a third surface 313 that can make contact with the third surface 313.
- the moving piece 320 includes a first surface 311 that can contact at least one of the first surface 211, the second surface 212, and the fifth surface 215, and a second surface that can contact the third surface 213. It may have a surface 312 and a third surface 313 that is in surface contact with the sixth surface 216.
- a zoom operation is performed by turning a zoom ring 80 by a user to further extend a predetermined lens.
- the state in which the moving piece 320 is pressed against the zoom ring 80 is maintained.
- the positional displacement of the zoom ring 80 in the optical axis direction is prevented. This is advantageous for improving the operational feeling of the user.
- the force in the optical axis direction received by the zoom ring 80 can be continuously transmitted to another frame or cylinder via the cam cylinder 50. As a result, even at the time of the zoom operation, the displacement of the members in the optical axis direction due to the gap between the members (the occurrence of rattling) is prevented. This is advantageous for improving the optical performance of the lens barrel 1.
- the fifth surface 215 of the zoom ring 80 is slightly inclined with respect to the direction D1 (a surface perpendicular to the optical axis direction). Therefore, at the time of the zoom operation, surface contact between the moving piece 320 and the fifth surface of the zoom ring 80 is avoided, and the state is close to line contact.
- the moving piece 320 can slide relatively smoothly with respect to the zoom ring 80. This is advantageous for improving the operational feeling of the user and for improving the optical performance of the lens barrel 1.
- the urging force (load) received by the moving piece 320 from the urging member 310 gradually increases.
- a load change can be set according to the movement of the lens during zooming.
- the height profile of the fifth surface 215 can be set according to the locus of the cam groove of the predetermined cylinder.
- the height profile of the fifth surface 215 can be set so that the operation torque of the zoom ring 80 recognized by the user gradually increases from the wide end toward the tele end.
- the height profile of the fifth surface 215 can be set so that the operation torque of the zoom ring 80 recognized by the user is constant between the wide end and the tele end.
- the user turns the zoom ring 80 in the opposite direction.
- a strong force for rotating the zoom ring 80 in the circumferential direction (second switching operation force, 2 switching torque).
- the slope of the sixth surface 216 of the zoom ring 80 may have a different slope from the slope of the third surface 213.
- the sixth surface 216 is connected to the second surface 212 on the side opposite to the third surface 213, and has an inclination with respect to the optical axis direction.
- the third surface 213 is connected to the second surface 212 on the side opposite to the sixth surface 216, and has an inclination with respect to the optical axis direction.
- the inclination of the sixth surface 216 with respect to the optical axis direction is different from the inclination of the third surface 213 with respect to the optical axis direction.
- the smaller angle of the angle formed by the urging direction of the urging member 310 and the third surface 213 and the smaller angle of the angle formed by the urging direction of the urging member 310 and the sixth surface 216 And is different.
- the third surface 213 has a higher gradient than the gradient of the sixth surface 216.
- the smaller one of the angles formed by the optical axis direction and the third surface 213 is smaller than the smaller one of the angles formed by the optical axis direction and the sixth surface 216.
- the first switching torque is set to be larger than the second switching torque.
- the non-photographing state (collapsed state, standby state) is more strongly maintained. It is possible to reliably lock various camera movements during non-shooting. For example, it is possible to prevent the lens barrel from being unintentionally extended and switched to the normal shooting state when the user carries the camera down from the neck in a non-shooting state (collapsed state, standby state).
- the sixth surface 216 may have a higher gradient compared to the gradient of the third surface 213.
- the smaller one of the angles formed by the optical axis direction and the sixth surface 216 is smaller than the smaller one of the angles formed by the optical axis direction and the third surface 213. This can prevent the user from unintentionally switching to the non-shooting state during shooting at the focal length near the wide end.
- the gradient of the sixth surface 216 and the gradient of the third surface 213 may be set in substantially the same manner.
- the fifth surface 215 of the zoom ring 80 can be parallel to the direction D1 (a surface perpendicular to the optical axis direction).
- the distance DP2 (not shown) between the second surface 212 and the fifth surface 215 (depth of the depression 395) is equal to the distance (the depth of the depression 390) between the second surface 212 and the first surface 211.
- DP1 is larger than DP2.
- DP2 is smaller than DP1, the urging force in the D2 direction can be transmitted to the zoom ring 80 in the normal photographing state. As a result, it is possible to generate a torque force required for the zoom operation from the wide end to the tele end. Further, as described above, it can also function as play in the D2 direction.
- DP1 can be the same as or smaller than DP2.
- three urging mechanisms 300 are arranged in the lens barrel 1.
- the three urging mechanisms 300 may be arranged at equal or non-equidistant intervals in the circumferential direction.
- the slim-sized urging member 310 is advantageous for disposing a plurality of urging mechanisms 300.
- One, two, three, four, five, six, seven, eight, nine, nine or ten or more urging mechanisms 300 can be arranged for one lens barrel 1.
- a high load acts on the zoom ring 80 in the optical axis direction at a plurality of positions in the circumferential direction by the plurality of biasing members 310.
- a higher load condition can be set for the entire lens barrel 1.
- the load is dispersed at a plurality of locations in the circumferential direction, which contributes to an improvement in durability.
- the bias of the load in the circumferential direction is avoided, and the displacement of the members in the optical axis direction (the occurrence of backlash) due to the gap between the members is more reliably prevented. This is advantageous for improving the optical performance of the lens barrel 1.
- holes (slots, grooves) 110 for the urging member 310 and the moving piece 320 are provided on the peripheral wall of the fixed frame 70.
- the hole 110 has slide walls 121 and 122 along the optical axis direction. Further, at least a part of the bottom of the hole 110 functions as the slide wall 123.
- the movement of the moving piece 320 in a direction intersecting with the moving direction is restricted by the restricting portions provided on the slide walls 121, 122, 123.
- the slide walls 121, 122, 123 have wall surfaces provided in parallel with the movement axis of the movement piece 320 as a restriction portion.
- the moving piece 320 moves along the wall surfaces of the sliding walls 121, 122, and 123.
- the sliding walls 121, 122, 123 realize smooth movement of the moving piece 320.
- the moving piece 320 has slide surfaces 321, 322, and 323 that face the wall surfaces of the slide walls 121, 122, and 123, respectively.
- the slide surfaces 321, 322, 323 are provided in parallel with the movement axis of the movement piece 320.
- the slide surfaces 321, 322, and 323 By the slide surfaces 321, 322, and 323, the movement of the moving piece 320 in the direction intersecting the moving direction is reliably restricted over the entire moving range.
- the urging mechanism 300 the occurrence of twisting when the moving piece 320 is moved is avoided, and a smoother movement of the moving piece 320 is achieved with a simple configuration.
- the posture of the moving piece 320 can be regulated and / or controlled substantially independently of the biasing member 310. That is, the posture of the moving piece 320 can be regulated and / or controlled with high accuracy. As a result, surface contact between the fixed frame 70 and the zoom ring 80 is reliably achieved. Alternatively, highly accurate torque control in the zoom operation is reliably achieved.
- a profile having two depressions 390 and 395 is set on each of three regions corresponding to the three urging mechanisms 300 on the shaft end surface of the zoom ring 80. Providing such a profile on the shaft end surface contributes to improvement in design flexibility, workability, and / or processing accuracy.
- the moving piece 320 has a slide surface 321 having a smooth outer surface, a slide surface 322 having a smooth outer surface, and a slide surface 323 having a smooth outer surface.
- the slide surface 321 and the slide surface 322 extend in the movement axis direction and are parallel to each other.
- the slide surface 323 extends in the movement axis direction and is perpendicular to the slide surface 321 and the slide surface 322.
- the posture of the moving piece 320 having such a configuration can be regulated and / or controlled with high accuracy via the slide surfaces 321, 322, and 323.
- the slide surface 323 has a plurality of slide surfaces (323) separated from each other in a direction intersecting the movement axis. This is advantageous for controlling the attitude of the moving piece 320 with high accuracy.
- a protrusion (contact portion) 340 may be arranged between the plurality of slide surfaces (323). This is also advantageous for controlling the attitude of the moving piece 320 with high accuracy.
- the moving piece 320 has a body 325, a first protrusion (contact portion) 340 provided to protrude forward along the movement axis from the body 325, and a first protrusion 340. And a second protruding portion (supporting portion) 342 protruding forward.
- the second protrusion 342 is provided on the bottom of the main body 325 and has, for example, a plate shape. At least a part of the second protrusion 342 faces a part of the inner peripheral surface of the zoom ring 80. As a result, the second protrusion 342 can support the zoom ring 80 in the radial direction. This contributes to improving the holding strength of the zoom ring 80 with respect to the fixed frame 70.
- the moving piece 320 has a post 345 to which the urging member 310 is attached.
- the biasing member 310 is a compression coil spring.
- the post 345 is inserted into the coil center of the urging member 310 from the coil end along the axial direction.
- LA2 the distance (maximum distance) from one end to the other end in the axial direction of the biasing member 310 arranged in the area BA1
- LA7 LA7 is equal to LA2.
- LA7 about 10, 20, 30, 40, 50, 60, or 70%.
- the above numerical values are representative examples, and other numerical values can be applied in other examples.
- the post 345 has at least a thick portion 346 provided at the distal end, and a thin portion 347 provided between the proximal end and the distal end.
- the outer diameter of the thick part 346 is set to a larger value than the outer diameter of the thin part 347.
- the outer diameter of the thick portion 346 is set to a value smaller than the inner diameter of the urging member 310.
- the thick portion 346 has a thick shape only in a part in the circumferential direction. That is, the thick portion 346 has a non-circular cross-sectional shape. In the thick portion 346 of the post 345, the center of gravity of the cross-sectional area is displaced in the radial direction with respect to the center axis of the urging member 310. By setting the thick portion 346, the posture of the urging member 310 is prevented from being collapsed.
- the fixed frame 70 has a post 350 to which the urging member 310 is attached, and a wall 355 to which the post 350 is attached. At one end of the biasing member 310, a post 350 is inserted.
- the wall 355 has a first surface 356, a second surface 357, and a third surface 358. In the axial direction of the post 350, the first surface 356 and the second surface 357 have different height levels.
- the third surface 358 is disposed between the first surface 356 and the second surface 357, and connects the first surface 356 and the second surface 357.
- the post 350 is arranged to cover a part of the first surface 356, a part of the second surface 357, and a part of the third surface 358.
- a step shape is set on the wall 355 at the base end of the post 350.
- the distal end of the wire of the urging member (coil spring) 310 is disposed on any of the first surface 356, the second surface 357, and the third surface 358.
- the tip of the wire of the biasing member 310 is arranged on the first surface 356 having the lowest height level.
- the height difference is provided on the wall where the end of the urging member 310 contacts, thereby preventing the posture of the urging member 310 from being distorted due to the winding shape.
- the posture can be controlled.
- the distal end of the wire rod of the urging member 310 is arranged on the second surface 357 having the highest height level.
- the biasing member 310 is arranged such that the distal end portion of the wire of the biasing member 310 intersects the third surface 358 (or engages with the step of the wall 355). If it is possible to add a process for flattening the end surface of the spring, it is not necessary to provide a step.
- the urging member 310 is provided on the fixed frame 70 and urges the moving piece 320 against the zoom ring 80;
- the urging member 310 may be provided on the zoom ring 80 to urge the moving piece 320 against the fixed frame 70.
- the first surface 211 to the seventh surface 217 are provided on the fixed frame 70.
- the urging member 310 urges in the optical axis direction
- the invention is not limited to this.
- a configuration may be employed in which a force is applied in the radial direction of a circle centered on the optical axis.
- the urging mechanism 300 is not limited to the one related to the control between the fixed frame 70 and the zoom ring 80.
- the biasing mechanism 300 is applicable to a mechanism relating to control between various two members in the lens barrel 1.
- the lens barrel (1) includes a first frame (70), a second frame (80) rotatable with respect to the first frame, and one of the first frame and the second frame.
- a moving member (320) arranged to be movable in the optical axis direction and transmitting the urging force of the urging member to the other of the first frame and the second frame; Is provided.
- the other has a first surface (215, 211) and a second surface (212), and the moving member (320) comes into contact with the first surface (215, 211).
- the urging force in the state where the moving member (320) is in contact with the second surface (212) is smaller than the urging force when the moving member (320) is in contact with the second surface (212).
- the other connects the first surface (215, 211) and the second surface (212) and has a third surface (216, 213) inclined with respect to the optical axis direction. Having.
- the other is connected to the second surface (212) on the opposite side to the third surface (216, 213), and the fourth surface (213) is inclined with respect to the optical axis direction. , 216).
- the inclination of the fourth surface (213, 216) with respect to the optical axis direction is different from the inclination of the third surface (216, 213) with respect to the optical axis direction.
- the smaller one of the angles formed by the optical axis direction and the fourth surface (213, 216) is the smaller of the angles formed by the optical axis direction and the third surface (216, 213). Smaller than the smaller angle.
- the moving member (320) has a fifth surface (312, 313) that can come into contact with the fourth surface (213, 216).
- the fourth surface (213, 216) and the fifth surface (312, 313) are substantially parallel.
- the moving member (320) has a sixth surface (313, 312) that can come into contact with the third surface (216, 213), and the third surface (216, 213). ) And the sixth surface (313, 312) are substantially parallel.
- the lens barrel (1) further includes a third frame (50) disposed on the inner peripheral side of the first frame (70) and the second frame (80).
- the urging member (310) urges the third frame (50) in the optical axis direction via the moving member (320) and the other, and thereby urges the urging member (310) and the moving member (320). ) are arranged plurally.
- a lens barrel (1) capable of switching between a shooting state and a contracted state includes a first frame (70) and a second frame ( 80), an urging portion (310) held by one of the first frame and the second frame, and having an urging force in the direction of contraction, and being urged by the urging portion.
- the contact portions (320, 340) are urged by the urging portion (310) so as to be movable in the direction in which the cylinder is contracted.
- the lens barrel (1) further includes a third frame (50) arranged on the inner peripheral side of the first frame (70) and the second frame (80).
- the urging portion (310) can be urged in a direction to compress the third frame via at least the contact portions (320, 340) and the other.
- the lens barrel (1) is held by a fixed frame (70), a rotating frame (80) rotatably arranged around the optical axis, and one of the fixed frame and the rotating frame.
- a movable member (320) urged by an urging portion and arranged to be movable in the optical axis direction, wherein the other of the fixed frame and the rotating frame is a first member.
- the amount or overall length varies.
- the lens barrel (1) includes a first member (70), a second member (80) having a relation of relatively moving in at least a first direction between the first member and the first member, An urging member (310) held by one of the first member and the second member is disposed so as to be movable along at least the other of the first member and the second member, and adjusts the urging force of the urging member.
- the lens barrel (1) includes a first frame (70), a second frame (80) rotatable relative to the first frame, the first frame and the first frame.
- the imaging device (500) includes any one of the lens barrels (1) described above and a main body (510) including the imaging element (520).
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Studio Devices (AREA)
Abstract
Description
本願は、2018年8月20日に出願された特願2018-154296号に基づき優先権を主張し、その内容をここに援用する。
Claims (18)
- 第1枠と、
前記第1枠に対して回転可能な第2枠と、
前記第1枠及び前記第2枠の一方に保持される付勢部材と、
光軸方向に移動可能に配置され、前記付勢部材の付勢力を前記第1枠及び前記第2枠の他方に伝える移動部材と、
を備える、レンズ鏡筒。 - 前記他方は、第1面と第2面とを有し、
前記移動部材が前記第1面と接触している状態での前記付勢力は、前記移動部材が前記第2面と接触している状態での前記付勢力より小さい
請求項1に記載のレンズ鏡筒。 - 前記他方は、前記第1面と前記第2面とを接続し、光軸方向に対して傾きがある第3面を有する
請求項2に記載のレンズ鏡筒。 - 前記他方は、前記第3面とは反対側で前記第2面と接続し、光軸方向に対して傾きがある第4面を有する
請求項3に記載のレンズ鏡筒。 - 光軸方向に対する前記第4面の傾きは、光軸方向に対する前記第3面の傾きと異なる
請求項4に記載のレンズ鏡筒。 - 光軸方向と前記第4面とが成す角のうち小さい方の角度は、光軸方向と前記第3面とが成す角のうち小さい方の角度より小さい
請求項5に記載のレンズ鏡筒。 - 前記移動部材は、前記第4面と面で接触可能な第5面を有する
請求項6に記載のレンズ鏡筒。 - 前記第4面と前記第5面とは、略平行である
請求項7に記載のレンズ鏡筒。 - 前記移動部材は、前記第3面と面で接触可能な第6面を有し、
前記第3面と前記第6面とは、略平行である
請求項3から請求項8の何れか1項に記載のレンズ鏡筒。 - 前記第1枠及び前記第2枠の内周側に配置される第3枠を備え、
前記付勢部材は、前記移動部材と前記他方とを介して、前記第3枠を光軸方向に付勢する
請求項1から請求項9の何れか1項に記載のレンズ鏡筒。 - 前記付勢部材及び前記移動部材は、複数配置される
請求項1から請求項10の何れか1項に記載のレンズ鏡筒。 - 撮影状態と縮筒状態とを切り替え可能なレンズ鏡筒であって、
第1枠と、
前記第1枠に対して相対的に回転可能な第2枠と、
前記第1枠及び前記第2枠の一方に保持され、縮筒する方向へ付勢力を有する付勢部と、
前記付勢部によって付勢され、前記第1枠及び前記第2枠の他方に接触可能である接触部と、を備える
レンズ鏡筒。 - 前記接触部は、前記付勢部によって縮筒する方向へ移動可能に付勢される
請求項12に記載のレンズ鏡筒。 - 前記第1枠及び前記第2枠の内周側に配される第3枠を備え、
前記付勢部は、少なくとも前記接触部と前記他方とを介して、前記第3枠を縮筒する方向へ付勢可能である
請求項12又は請求項13に記載のレンズ鏡筒。 - 固定枠と、
光軸周りに回転可能に配される回転枠と、
前記固定枠及び前記回転枠の一方に保持される付勢部材と、
付勢部によって付勢され、光軸方向に移動可能に配置される移動部材と、を備え、
前記固定枠及び前記回転枠の他方は、第1面と第2面とを有し、
前記付勢部材は、前記移動部材が前記第1面に接触した状態と前記第2面に接触した状態との間でたわみ量又は全長が変化する
レンズ鏡筒。 - 第1部材と、
前記第1部材との間で少なくとも第1方向に相対移動する関係を有する第2部材と、
前記第1部材及び前記第2部材の一方に保持される付勢部材と、
少なくとも前記第1部材及び第2部材の他方に沿って移動可能に配置され、前記付勢部材の付勢力を前記他方に伝える移動部材と、
を備える、レンズ鏡筒。 - 第1枠と、
前記第1枠に対して相対的に回転可能な第2枠と、
前記第1枠及び前記第2枠の一方に保持される付勢部と、
前記付勢部によって、前記第1枠及び前記第2枠の他方に面で接触可能な接触部と、を備える
レンズ鏡筒。 - 請求項1から請求項17の何れか1項に記載のレンズ鏡筒と、
撮像素子を備える本体部と、
を備える、撮像装置。
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/269,107 US12242173B2 (en) | 2018-08-20 | 2019-08-20 | Lens barrel and imaging apparatus |
| CN202310714980.0A CN116699787A (zh) | 2018-08-20 | 2019-08-20 | 透镜镜筒及摄像装置 |
| CN202310714971.1A CN116699786A (zh) | 2018-08-20 | 2019-08-20 | 透镜镜筒及摄像装置 |
| CN202310714808.5A CN116699785A (zh) | 2018-08-20 | 2019-08-20 | 透镜镜筒及摄像装置 |
| JP2020538391A JPWO2020040112A1 (ja) | 2018-08-20 | 2019-08-20 | レンズ鏡筒及び撮像装置 |
| CN201980053347.3A CN112567276A (zh) | 2018-08-20 | 2019-08-20 | 透镜镜筒及摄像装置 |
| JP2022150027A JP2022174289A (ja) | 2018-08-20 | 2022-09-21 | レンズ鏡筒及び撮像装置 |
| JP2025002072A JP2025061054A (ja) | 2018-08-20 | 2025-01-07 | レンズ鏡筒 |
| US19/039,854 US20250172857A1 (en) | 2018-08-20 | 2025-01-29 | Lens barrel and imaging apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018154296 | 2018-08-20 | ||
| JP2018-154296 | 2018-08-20 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/269,107 A-371-Of-International US12242173B2 (en) | 2018-08-20 | 2019-08-20 | Lens barrel and imaging apparatus |
| US19/039,854 Continuation US20250172857A1 (en) | 2018-08-20 | 2025-01-29 | Lens barrel and imaging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020040112A1 true WO2020040112A1 (ja) | 2020-02-27 |
Family
ID=69592637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/032365 Ceased WO2020040112A1 (ja) | 2018-08-20 | 2019-08-20 | レンズ鏡筒及び撮像装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US12242173B2 (ja) |
| JP (3) | JPWO2020040112A1 (ja) |
| CN (4) | CN116699785A (ja) |
| WO (1) | WO2020040112A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE546247C2 (en) * | 2022-11-17 | 2024-09-10 | Topgolf Sweden Ab | Method and arrangement for adjusting a camera lens in relation to a camera sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009175484A (ja) * | 2008-01-25 | 2009-08-06 | Seiko Epson Corp | レンズ装置及び光学機器 |
| JP2010145499A (ja) * | 2008-12-16 | 2010-07-01 | Canon Inc | レンズ鏡筒 |
| JP2014232133A (ja) * | 2013-05-28 | 2014-12-11 | 株式会社ニコン | レンズ鏡筒および撮像装置 |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104812U (ja) * | 1983-12-23 | 1985-07-17 | 旭光学工業株式会社 | レンズ鏡筒の距離調節環のプリセツト機構 |
| JPH08234259A (ja) * | 1995-02-24 | 1996-09-13 | Nikon Corp | 鏡筒の基準位置検出装置 |
| JPH08278434A (ja) * | 1995-04-06 | 1996-10-22 | Nikon Corp | レンズ鏡筒 |
| JPH08334676A (ja) * | 1995-06-06 | 1996-12-17 | Asahi Optical Co Ltd | 自動焦点カメラ用レンズ鏡筒 |
| JPH09145985A (ja) * | 1995-11-21 | 1997-06-06 | Nikon Corp | レンズ鏡筒 |
| JPH09203842A (ja) * | 1996-01-26 | 1997-08-05 | Nikon Corp | レンズ鏡筒 |
| JPH1020173A (ja) * | 1996-07-04 | 1998-01-23 | Nikon Corp | カメラのズームレンズ鏡筒 |
| JP2000035606A (ja) * | 1998-07-17 | 2000-02-02 | Fuji Photo Film Co Ltd | カメラ |
| JP2001305409A (ja) * | 2000-04-19 | 2001-10-31 | Matsushita Electric Ind Co Ltd | レンズ鏡筒 |
| JP2003075711A (ja) * | 2001-09-06 | 2003-03-12 | Olympus Optical Co Ltd | ズームレンズ鏡筒 |
| JP2007310073A (ja) * | 2006-05-17 | 2007-11-29 | Fujifilm Corp | レンズ鏡胴 |
| JP2010014766A (ja) * | 2008-07-01 | 2010-01-21 | Cosina Co Ltd | レンズ装置及び光学機器 |
| US8547653B2 (en) * | 2008-07-17 | 2013-10-01 | Nikon Corporation | Lens barrel and optical instrument |
| JP5430259B2 (ja) * | 2009-07-08 | 2014-02-26 | キヤノン株式会社 | 沈胴式レンズ鏡筒 |
| KR101567816B1 (ko) * | 2009-07-16 | 2015-11-11 | 삼성전자주식회사 | 렌즈 아답터 |
| JP5598128B2 (ja) * | 2010-07-12 | 2014-10-01 | 株式会社ニコン | レンズ鏡筒および光学機器 |
| JP5868062B2 (ja) | 2011-08-05 | 2016-02-24 | キヤノン株式会社 | レンズユニット |
| JP2014059402A (ja) | 2012-09-14 | 2014-04-03 | Olympus Imaging Corp | レンズ装置および撮像装置 |
| JP6314318B2 (ja) | 2013-10-15 | 2018-04-25 | パナソニックIpマネジメント株式会社 | レンズ鏡筒 |
| DE102013022013B4 (de) * | 2013-12-20 | 2017-08-17 | Carl Zeiss Ag | Kamerawechselobjektiv und Verfahren zum Aktivieren und Deaktivieren einer Rastvorrichtung einer Blende eines Kamerawechselobjektivs |
| US10185206B2 (en) * | 2015-08-20 | 2019-01-22 | Canon Kabushiki Kaisha | Lens barrel, lens driving device, and image pickup apparatus |
| JP2017111315A (ja) | 2015-12-17 | 2017-06-22 | キヤノン株式会社 | レンズ装置、カメラ本体および撮影装置 |
| JPWO2017115465A1 (ja) * | 2015-12-28 | 2018-09-20 | パナソニックIpマネジメント株式会社 | レンズ鏡筒およびこれを備えたカメラ |
| JP2018072403A (ja) | 2016-10-25 | 2018-05-10 | キヤノン株式会社 | レンズ鏡筒および撮像装置。 |
| JP6946675B2 (ja) * | 2017-03-13 | 2021-10-06 | 株式会社リコー | レンズ鏡筒及び撮像装置 |
| JP7118801B2 (ja) * | 2018-08-10 | 2022-08-16 | キヤノン株式会社 | レンズ装置及びこれを備える撮像装置 |
| JP7130511B2 (ja) * | 2018-09-21 | 2022-09-05 | キヤノン株式会社 | 撮像装置 |
-
2019
- 2019-08-20 CN CN202310714808.5A patent/CN116699785A/zh active Pending
- 2019-08-20 US US17/269,107 patent/US12242173B2/en active Active
- 2019-08-20 CN CN202310714980.0A patent/CN116699787A/zh active Pending
- 2019-08-20 CN CN201980053347.3A patent/CN112567276A/zh active Pending
- 2019-08-20 WO PCT/JP2019/032365 patent/WO2020040112A1/ja not_active Ceased
- 2019-08-20 JP JP2020538391A patent/JPWO2020040112A1/ja active Pending
- 2019-08-20 CN CN202310714971.1A patent/CN116699786A/zh active Pending
-
2022
- 2022-09-21 JP JP2022150027A patent/JP2022174289A/ja active Pending
-
2025
- 2025-01-07 JP JP2025002072A patent/JP2025061054A/ja active Pending
- 2025-01-29 US US19/039,854 patent/US20250172857A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009175484A (ja) * | 2008-01-25 | 2009-08-06 | Seiko Epson Corp | レンズ装置及び光学機器 |
| JP2010145499A (ja) * | 2008-12-16 | 2010-07-01 | Canon Inc | レンズ鏡筒 |
| JP2014232133A (ja) * | 2013-05-28 | 2014-12-11 | 株式会社ニコン | レンズ鏡筒および撮像装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| US12242173B2 (en) | 2025-03-04 |
| US20250172857A1 (en) | 2025-05-29 |
| CN116699787A (zh) | 2023-09-05 |
| JPWO2020040112A1 (ja) | 2021-08-26 |
| CN112567276A (zh) | 2021-03-26 |
| CN116699785A (zh) | 2023-09-05 |
| US20210311376A1 (en) | 2021-10-07 |
| CN116699786A (zh) | 2023-09-05 |
| JP2022174289A (ja) | 2022-11-22 |
| JP2025061054A (ja) | 2025-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4993815A (en) | Zoom-lens-barrel assembly | |
| CN101688964B (zh) | 镜头、相机和信息装置 | |
| CN101641628B (zh) | 镜头、成像装置和信息终端装置 | |
| JP2019113878A (ja) | レンズ鏡筒 | |
| JP7268688B2 (ja) | レンズ鏡筒および光学機器 | |
| US6965486B2 (en) | Zoom camera having lens barrel assembly adjustable focus and resolution power of lens | |
| US7173772B2 (en) | Lens barrel | |
| US7969662B2 (en) | Lens barrel unit and imaging apparatus | |
| US20250172857A1 (en) | Lens barrel and imaging apparatus | |
| US5907439A (en) | Zoom lens apparatus with shared cam groove | |
| US6906871B2 (en) | Cam mechanism for lens barrel | |
| WO2005040888A1 (ja) | 光学モジュール | |
| JP2022169960A (ja) | 光学装置及びそれを備えた撮像装置 | |
| US6839187B2 (en) | Lens distance-varying mechanism, and step-zoom lens incorporating the same | |
| US20240264406A1 (en) | Optical apparatus and imaging apparatus | |
| JP2005084406A (ja) | ズームレンズ鏡筒および光学機器 | |
| JPH1020173A (ja) | カメラのズームレンズ鏡筒 | |
| JP2019053145A (ja) | カムフォロア及びレンズ鏡筒 | |
| KR20000055180A (ko) | 카메라의 줌 렌즈 메커니즘 | |
| WO2024058175A1 (ja) | レンズ鏡筒及び撮像装置 | |
| JP2007003581A (ja) | レンズ鏡筒 | |
| JP2016130763A (ja) | レンズ鏡筒、光学機器、および、撮像装置 | |
| JPH08304691A (ja) | レンズ鏡筒 | |
| JP4479293B2 (ja) | レンズ鏡筒 | |
| JPH04315113A (ja) | ズーミングメカニズム |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19853124 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020538391 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19853124 Country of ref document: EP Kind code of ref document: A1 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 17269107 Country of ref document: US |