Lens device

Abstract

To provide a lens device which can be downsized.SOLUTION: The lens device includes: a holding member for holding a lens; a first moving mechanism provided in the holding member, the first moving mechanism moving the holding member into a first direction perpendicular to the direction of an optical axis; and a second moving mechanism provided in the holding member, the second moving mechanism moving the holding member into a second direction perpendicular to the direction of the optical axis. The extended line of the first direction as the direction in which the first moving member moves and the extended line of the second direction as the direction in which the second moving member moves intersect with each other in the position which is not the position of the optical axis when are seen from the direction of the optical axis.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The technology of the present disclosure relates to a lens apparatus. [Background technology]

[0002] Patent Document 1 discloses a lens barrel having a lens chamber that holds a lens element with the optical axis as its central axis, a fixed barrel that holds the lens chamber, and a plurality of centering members that can adjust the positional relationship between the lens chamber and the fixed barrel in a direction perpendicular to the optical axis. The lens chamber has a plurality of first bayonet claws, and the fixed barrel has a plurality of second bayonet claws, the first bayonet claws and the second bayonet claws are the same in number and are arranged in positions where they at least partially overlap when viewed from the optical axis direction.

[0003] Patent Document 2 discloses a lens barrel including a cylindrical cam follower, a cam barrel having a cam groove that engages with the cam follower, and a lens support member that supports a lens. The lens support member has a protruding portion that protrudes from the outer periphery toward the outside in the radial direction of the lens and is inserted into the cam follower, and the cam follower and the lens support member are fixed in an unfastened state.

[0004] Patent Document 3 discloses an alignment mechanism for a lens barrel having a plurality of lens groups arranged in a barrel body. The alignment mechanism includes a main frame that holds a first sub-lens group consisting of one or more lenses constituting one of the plurality of lens groups, and one or more sub-frames that are held by the main frame and hold a second sub-lens group consisting of one or more lenses that are not held by the main frame and are different from the first sub-lens group constituting one of the lens groups. The main frame is held so as to be movable in a direction perpendicular to the optical axis relative to the barrel body, and the sub-frame is held so as to be movable in a direction perpendicular to the optical axis relative to the main frame. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-012997 A [Patent Document 2] Patent No. 7219821 [Patent Document 3] Patent Publication No. 2021-081606 Summary of the Invention

[0006] One embodiment of the technique disclosed herein provides a lens device that can be made compact. [Means for solving the problem]

[0007] A first aspect of the technology disclosed herein is a lens device comprising a holding member that holds a lens, a first movable member provided on the holding member and that moves the holding member in a first direction that intersects with the direction of the optical axis, and a second movable member provided on the holding member and that moves the holding member in a second direction that intersects with the direction of the optical axis, wherein, when viewed from the direction of the optical axis, the position of the point where an extension line of the first direction, which is the movement direction of the first movable member, and an extension line of the second direction, which is the movement direction of the second movable member, intersect is different from the position of the optical axis.

[0008] A second aspect of the technique disclosed herein is a lens device according to the first aspect, further comprising a support member that supports the holding member, the support member having a protrusion, and a first movable member that abuts against the protrusion to move the holding member in a first direction.

[0009] A third aspect of the technology disclosed herein is a lens device according to the second aspect, wherein the protrusion has a first protrusion portion and a second protrusion portion, and the first protrusion portion and the second protrusion portion extend along a third direction intersecting the first direction.

[0010] A fourth aspect of the technique of the present disclosure is the lens device according to the third aspect, wherein the first protrusion and the second protrusion are provided on a plane intersecting with the first direction.

[0011] A fifth aspect of the technique of the present disclosure is a lens device according to any one of the second to fourth aspects, in which the first moving member has a screw, and the head of the screw abuts against the protrusion.

[0012] A sixth aspect of the technique of the present disclosure is the lens device according to any one of the second to fifth aspects, wherein a top surface of the protrusion is a convex curved surface.

[0013] A seventh aspect of the technology disclosed herein is a lens device according to any one of the third aspect, the fourth aspect, and the fifth aspect dependent on the third aspect, wherein the first movable member has a screw, the support member has an insertion hole into which the shank of the screw is inserted, the first protrusion portion is formed on a first side relative to the insertion hole, and the second protrusion portion is formed on a second side relative to the insertion hole.

[0014] An eighth aspect of the technique of the present disclosure is a lens device according to any one of the second to seventh aspects, wherein the protrusion portion extends along a direction around an extension line of the first direction.

[0015] A ninth aspect of the technique of the present disclosure is a lens device according to any one of the first to eighth aspects, further comprising a support member supporting the holding member, the support member having a housing portion, the first movable member having a rotating portion and a moving portion provided on the holding member and moving in the axial direction of the rotating portion as the rotating portion rotates, and the moving portion being housed in the housing portion.

[0016] A tenth aspect of the technology of the present disclosure is a lens device according to any one of the first to ninth aspects, further comprising a lens barrel that houses a holding member, the lens barrel having a first opening on a side portion, and the first movable member being positioned at a position corresponding to the first opening.

[0017] An eleventh aspect of the technique of the present disclosure is a lens device according to the tenth aspect, wherein the holding member is supported so as to be movable in the direction of the optical axis relative to the lens barrel, and the first movable member is positioned at a position corresponding to the first opening when the holding member is moved to a first position.

[0018] A twelfth aspect of the technique of the present disclosure is the lens device according to the eleventh aspect, wherein the first position is a position of the holding member at a telephoto end or a wide-angle end.

[0019] A thirteenth aspect of the technique of the present disclosure is the lens device according to any one of the tenth to twelfth aspects, wherein the first opening is formed in a tapered shape.

[0020] A fourteenth aspect of the technology of the present disclosure is a lens device according to any one of the tenth to thirteenth aspects, wherein the first movable member has a screw, a groove is formed in the top surface of the head of the screw, and the top surface is formed by a tapered concave surface.

[0021] A fifteenth aspect of the technology disclosed herein is a lens device according to any one of the tenth to fourteenth aspects, wherein the lens barrel has a second opening on the side portion, and the second movable member is arranged at a position corresponding to the second opening.

[0022] A 16th aspect of the technique of the present disclosure is a lens device according to any one of the 1st to 15th aspects, further comprising a support member that supports the holding member, and a barrel that houses the holding member and the support member, wherein the barrel has a third opening on a side portion, the holding member has a regulating member that regulates movement in the direction of the optical axis relative to the support member, and the regulating member is arranged at a position corresponding to the third opening.

[0023] A 17th aspect of the technique of the present disclosure is a lens device according to the 16th aspect, further comprising a lens barrel that houses a holding member, the lens barrel having a first opening, the first movable member being positioned at a position corresponding to the first opening, and the third opening being an opening different from the first opening.

[0024] An 18th aspect of the technology of the present disclosure is a lens device according to the 16th or 17th aspect, wherein the holding member is supported so as to be movable in the direction of the optical axis relative to the lens barrel, and the regulating member is positioned at a position corresponding to the third opening when the holding member is moved to the second position.

[0025] A 19th aspect of the technique of the present disclosure is a lens device according to the 18th aspect, further comprising a lens barrel that houses a holding member, the lens barrel having a first opening, the first movable member being positioned at a position corresponding to the first opening when the holding member is moved to the first position, and the second position being a position different from the first position.

[0026] A twentieth aspect according to the technique of the present disclosure is the lens device according to the eighteenth or nineteenth aspect, in which the second position is a position of the telephoto end or the wide-angle end of the holding member.

[0027] A 21st aspect of the technology of the present disclosure is a lens device according to any one of the 16th to 20th aspects, wherein the support member has an engagement hole and the regulating member is engaged with the engagement hole.

[0028] A twenty-second aspect according to the technique of the present disclosure is the lens device according to the twenty-first aspect, wherein the engagement hole is disposed at a position corresponding to the third opening.

[0029] A twenty-third aspect of the technique of the present disclosure is the lens device according to any one of the sixteenth to twenty-second aspects, in which the restricting member is fixed to the supporting member by an adhesive.

[0030] A 24th aspect of the technique of the present disclosure is a lens device according to any one of the 16th to 23rd aspects, further comprising a first holding member as a holding member that holds a first lens as a lens, a first support member as a support member, a second holding member that holds a second lens, and a second support member that supports the second holding member, wherein the first holding member has a first regulating member as a regulating member, and the second holding member has a second regulating member that regulates movement in the direction of the optical axis relative to the second support member, and the first regulating member and the second regulating member are arranged at a position corresponding to the third opening.

[0031] A 25th aspect of the technology disclosed herein is a lens device according to any one of the 1st to 24th aspects, wherein the first movable member is arranged on the opposite side of the optical axis to the second movable member when viewed from the direction of the optical axis, and the second movable member is arranged on the opposite side of the optical axis to the first movable member when viewed from the direction of the optical axis.

[0032] A 26th aspect of the technique of the present disclosure is a lens device according to any one of the first to 25th aspects, wherein the holding member has a first axis member, a second axis member and a third axis member, the first moving member is arranged in a first region formed by the axis line of the first axis member and the axis line of the second axis member when viewed from the direction of the optical axis, the second moving member is arranged in a second region formed by the axis line of the second axis member and the axis line of the third axis member when viewed from the direction of the optical axis, and the point is arranged in a third region formed by the axis line of the third axis member and the axis line of the first axis member when viewed from the direction of the optical axis.

[0033] A 27th aspect of the technology of the present disclosure is a lens device according to any one of the 1st to 26th aspects, further comprising a pressing member that presses the holding member toward the optical axis, and the pressing member is arranged in a fourth region formed by an extension line in the first direction and an extension line in the second direction when viewed from the direction of the optical axis.

[0034] A 28th aspect of the technology of the present disclosure is a manufacturing method for a lens device relating to any one of the 1st to 27th aspects, comprising an assembly process for assembling a plurality of components including a holding member, and an adjustment process for adjusting the position of the holding member by using a first movable member and / or a second movable member.

[0035] A 29th aspect of the technique of the present disclosure is a method for manufacturing a lens device according to the 28th aspect, wherein the lens device further includes a support member supporting the holding member, the support member having a protrusion, and the adjustment process includes abutting a first movable member against the protrusion and moving the holding member in the second direction by a second movable member.

[0036] A 30th aspect of the technique of the present disclosure is a method for manufacturing a lens device according to the 28th or 29th aspect, wherein the lens device further includes a barrel that houses a holding member, the barrel having a first opening, and the holding member is supported so as to be movable in the direction of the optical axis relative to the barrel, and the adjustment process includes adjusting the position of the holding member by operating the first movable member through the first opening when the holding member moves to a first position and the first movable member is positioned at a position corresponding to the first opening.

[0037] A 31st aspect of the technique of the present disclosure is a method for manufacturing a lens device according to the 30th aspect, wherein the lens barrel has a second opening, and the adjustment process includes a step of adjusting the position of the holding member by operating the second moving member through the second opening when the holding member moves to a second position and the second moving member is positioned at a position corresponding to the second opening.

[0038] A 32nd aspect of the technique of the present disclosure is a method for manufacturing a lens device according to the 31st aspect, wherein the lens device further includes a support member that supports the holding member, and a barrel that houses the holding member and the support member, the barrel having a third opening, and the holding member having a regulating member that regulates movement of the holding member in the direction of the optical axis relative to the support member, and the method for manufacturing a lens device further includes an adhesive step of fixing the regulating member to the support member through the third opening with an adhesive when the holding member is moved to a second position and the regulating member is positioned at a position corresponding to the third opening. [Brief description of the drawings]

[0039] [Figure 1] 1 is a side view including a partial cross section of a lens device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a cross-sectional view showing a state in which a plurality of lenses in the lens device have been moved to a wide-angle end position. [Diagram 3] 1 is a cross-sectional view showing a state in which a plurality of lenses in a lens device have been moved to an intermediate position between a wide-angle end and a telephoto end. [Figure 4] FIG. 2 is a cross-sectional view showing a state in which a plurality of lenses in the lens device have been moved to a telephoto end position. [Diagram 5] FIG. 4 is a side view showing a cam barrel provided in the lens device. [Figure 6] FIG. 2 is an exploded perspective view showing a schematic view of a plurality of holding frames provided in the lens device. [Figure 7] 9 is a cross-sectional view taken along the line F7-F7 in FIG. 8. [Figure 8] 1 is a perspective view, partially in cross section, showing a state in which a plurality of lenses in a lens device have been moved to a wide-angle end position. [Figure 9] 1 is a perspective view, including a partial cross section, showing a state in which a plurality of lenses in a lens device have been moved to a telephoto end position. [Figure 10] 2 is a perspective view showing a peripheral portion of a first moving member provided in the lens device. FIG. [Figure 11] 11 is a diagram in which the first moving member is omitted compared to FIG. 10. [Figure 12]12 is an enlarged view showing the periphery of the protrusion shown in FIG. 11. [Figure 13] FIG. 4 is a perspective view showing a first group of holding frames. [Figure 14] FIG. 11 is a perspective view showing a second group of holding frames. [Figure 15] FIG. 2 is a perspective view showing an objective side end of the lens device. [Figure 16] 4 is a flowchart showing the flow of a manufacturing method of the lens device. [Figure 17] 13 is a perspective view including a partial cross section showing a modified example of the periphery of the first moving member. FIG. [Figure 18] 18 is a perspective view showing the periphery of the opening shown in FIG. 17. [Figure 19] FIG. 13 is a perspective view showing a modified example of the protrusion portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0040] An example of an embodiment of a lens device 10 according to the technique of the present disclosure will be described below with reference to the accompanying drawings. Note that the following description may be given across multiple drawings.

[0041] FIG 1 shows a lens device 10 according to this embodiment. The lens device 10 is applicable to various cameras such as digital still cameras. The arrow A indicates the objective side, and the arrow B indicates the image side. The lens device 10 has an optical axis OA. In the following description, the direction of the optical axis OA (hereinafter referred to as the "optical axis direction") refers to a direction parallel to the optical axis OA.

[0042] The lens device 10 includes a ring member 12 and a lens barrel 14. In Fig. 1, the ring member 12 is shown in cross section. A portion of the lens barrel 14 on the objective side is formed as an attachment portion 16. The ring member 12 is attached to the outer periphery of the attachment portion 16, and is supported by the lens barrel 14 so as to be rotatable about the optical axis OA.

[0043] Figures 2 to 4 show various operating states of the lens device 10. The lens device 10 includes a plurality of lenses 18. Figure 2 shows a state in which the plurality of lenses 18 have moved to the wide-angle end, Figure 3 shows a state in which the plurality of lenses 18 have moved to an intermediate position between the wide-angle end and the telephoto end, and Figure 4 shows a state in which the plurality of lenses 18 have moved to the telephoto end.

[0044] The lenses 18 are classified into a number of groups. As an example, the number of the groups is four. However, the number of the groups may be any number. Hereinafter, when it is necessary to distinguish between the four groups, the groups will be referred to as a first group G1, a second group G2, a third group G3, and a fourth group G4 in that order from the objective side to the image side.

[0045] The lenses 18 of the first group G1 include a lens 18A1, a lens 18A2, and a lens 18A3. As an example, the lens 18A1 is an objective lens. The lenses 18 of the second group G2 include a lens 18B1, a lens 18B2, a lens 18B3, a lens 18B4, a lens 18B5, and a lens 18B6. An aperture 19 is disposed between the lenses 18B1 and 18B2. The lenses 18 of the third group G3 include a lens 18C1, a lens 18C2, and a lens 18C3. The lenses 18 of the fourth group G4 include a lens 18D1.

[0046] The lens device 10 includes a holding frame 20A, a holding frame 20B, a holding frame 20C, and a holding frame 20D. The holding frames 20A, 20B, 20C, and 20D are all formed in an annular shape around the optical axis OA. The holding frames 20A, 20B, 20C, and 20D are all housed inside the lens barrel 14, and are supported so as to be movable in the optical axis direction relative to the lens barrel 14.

[0047] The lenses 18 of the first group G1 are held by a holding frame 20A, the lenses 18 and the aperture 19 of the second group G2 are held by a holding frame 20B, the lenses 18 of the third group G3 are held by a holding frame 20C, and the lenses 18 of the fourth group G4 are held by a holding frame 20D.

[0048] The lens device 10 further includes a hood member 22. The hood member 22 is formed in an annular shape around the optical axis OA. The hood member 22 is disposed radially outward of the holding frame 20A.

[0049] The lens barrel 14 has an outer tube 24 and an inner tube 26. The outer tube 24 and the inner tube 26 are both formed into a cylindrical shape. The inner tube 26 is disposed radially inside the outer tube 24. A cam tube 28 is disposed between the outer tube 24 and the inner tube 26. The cam tube 28 is formed into a cylindrical shape. The cam tube 28 is connected to the ring member 12 via a connecting mechanism (not shown). When the ring member 12 rotates, the cam tube 28 rotates in conjunction with the rotation of the ring member 12.

[0050] FIG. 5 shows the cam barrel 28. The cam barrel 28 has a groove 30A, a groove 30B, and a groove 30C. The groove 30A is a groove for moving the lenses 18 of the first group G1 in the optical axis direction. The groove 30B is a groove for moving the lenses 18 of the second group G2 in the optical axis direction. The groove 30C is a groove for moving the lenses 18 of the third group G3 in the optical axis direction. In order to arrange the lenses 18 at the wide-angle end, the intermediate end, and the telephoto end, the shapes of the grooves 30A, 30B, and 30C (i.e., the inclination angles with respect to the optical axis OA) are different from each other. The cam barrel 28 has three grooves 30A, three grooves 30B, and three grooves 30C. The three grooves 30A are arranged around the optical axis OA. The three grooves 30B and the three grooves 30C are also arranged around the optical axis OA like the three grooves 30A.

[0051] FIG. 6 shows a schematic diagram of the holding frame 20A of the first group G1, the holding frame 20B of the second group G2, and the holding frame 20C of the third group G3. The holding frame 20A has a plurality of rollers 32A. The plurality of rollers 32A are arranged at intervals in the circumferential direction of the holding frame 20A. The holding frame 20B has a plurality of rollers 32B. The plurality of rollers 32B are arranged at intervals in the circumferential direction of the holding frame 20B. The holding frame 20C has a plurality of rollers 32C. The plurality of rollers 32C are arranged at intervals in the circumferential direction of the holding frame 20C. As an example, the number of the plurality of rollers 32A is three. Similarly, the number of the plurality of rollers 32B is three, and the number of the plurality of rollers 32C is also three.

[0052] Each roller 32A is inserted into each groove 30A and thereby movably engaged with each groove 30A. Similarly, each roller 32B is inserted into each groove 30B and thereby movably engaged with each groove 30B. Furthermore, each roller 32C is inserted into each groove 30C and thereby movably engaged with each groove 30C.

[0053] When the cam barrel 28 rotates, the rollers 32A move relative to the grooves 30A, converting the rotational force of the cam barrel 28 into a linear force in the optical axis direction of the holding frame 20A, and the holding frame 20A moves in the optical axis direction. Similarly, when the cam barrel 28 rotates, the rollers 32B move relative to the grooves 30B, converting the rotational force of the cam barrel 28 into a linear force in the optical axis direction of the holding frame 20B, and the holding frame 20B moves in the optical axis direction. Also, when the cam barrel 28 rotates, the rollers 32C move relative to the grooves 30C, converting the rotational force of the cam barrel 28 into a linear force in the optical axis direction of the holding frame 20C, and the holding frame 20C moves in the optical axis direction. In this way, the holding frame 20A, the holding frame 20B, and the holding frame 20C move in the optical axis direction, thereby realizing a state in which the multiple lenses 18 have moved to the wide-angle end, the telephoto end, and the intermediate portion.

[0054] Fig. 7 shows a cross section taken along line F7-F7 in Fig. 8. Figs. 8 and 9 show a cross section of the lens device 10 taken along a plane parallel to the optical axis OA. Figs. 7 and 8 show a state in which the lenses 18 have been moved to the wide-angle end, and Fig. 9 shows a state in which the lenses 18 have been moved to the telephoto end. In Fig. 7, the ring member 12 and the lens barrel 14 are omitted. In Figs. 8 and 9, the ring member 12 is omitted.

[0055] The holding frame 20A has a first holding member 34 and a first support member 36 (see Figs. 8 and 9). The first holding member 34 is an example of the "holding member" and the "first holding member" according to the technology of the present disclosure. The first support member 36 is an example of the "support member" and the "first support member" according to the technology of the present disclosure.

[0056] The first holding member 34 holds the lens 18A1, and the first support member 36 holds the lenses 18A2 and 18A3. The lens 18A1 is an example of a "first lens" according to the technology of the present disclosure. The lens 18A1 is disposed on the objective side of the lens 18A2, and the lens 18A2 is disposed on the objective side of the lens 18A3. The first holding member 34 has an inner cylinder portion 38, and the first support member 36 has an outer cylinder portion 40. The outer cylinder portion 40 is disposed radially outside the inner cylinder portion 38.

[0057] The holding frame 20A has a first moving member 42A and a second moving member 42B (see FIG. 7). The second moving member 42B has a similar configuration to the first moving member 42A except for its position. In FIG. 8, the reference numeral of the first moving member 42A is indicated with the reference numeral of the second moving member 42B in parentheses.

[0058] The first moving member 42A has a screw 44A and a nut 46A. The nut 46A is fixed to a fixing portion 48A provided on the inner cylinder portion 38. The shaft portion of the screw 44A is inserted into an insertion hole 50A formed in the outer cylinder portion 40 and an insertion hole 52A formed in the fixing portion 48, and is screwed with the nut 46A. The head portion of the screw 44A abuts against the outer cylinder portion 40. The screw 44A is an example of a "rotating portion" according to the technology of the present disclosure, and the nut 46A is an example of a "moving portion" according to the technology of the present disclosure.

[0059] Similarly, the second moving member 42B (see FIG. 7) has a screw 46B and a nut 46B. The nut 46B is fixed to a fixing portion 48B provided on the inner cylinder portion 38. The shaft portion of the screw 46B is inserted into an insertion hole 50B formed in the outer cylinder portion 40 and an insertion hole 52B formed in the fixing portion 48, and is screwed into the nut 46B. The head portion of the screw 46B abuts against the outer cylinder portion 40.

[0060] When viewed from the optical axis direction, the movement direction of the first moving member 42A (i.e., the direction in which the nut 46A moves) intersects with the optical axis direction, and the movement direction of the second moving member 42B (i.e., the direction in which the nut 46B moves) intersects with the optical axis direction (see FIG. 7). The movement direction of the first moving member 42A also intersects with the movement direction of the second moving member 42B. As an example, the movement direction of the first moving member 42A, the movement direction of the second moving member 42B, and the optical axis direction are mutually perpendicular.

[0061] The moving direction of the first moving member 42A is an example of the "first direction" according to the technology of the present disclosure, and the moving direction of the second moving member 42B is an example of the "second direction" according to the technology of the present disclosure. Hereinafter, the moving direction of the first moving member 42A is also referred to as the "first direction", and the moving direction of the first moving member 42A is also referred to as the "second direction". The extension line L1 is a line extending from the first direction, and the extension line L2 is a line extending from the second direction. For example, the extension line L1 corresponds to the axis of the first moving member 42A, and the extension line L2 corresponds to the axis of the second moving member 42B. The extension line L1 is an example of the "extension line in the first direction" according to the technology of the present disclosure, and the extension line L2 is an example of the "extension line in the second direction" according to the technology of the present disclosure.

[0062] When the screw 44A is rotated, the nut 46A moves relative to the screw 44A in the axial direction of the screw 44A, causing the first holding member 34 to move in a first direction relative to the first support member 36. When the screw 44B is rotated, the nut 46B moves relative to the screw 44B in the axial direction of the screw 44B, causing the first holding member 34 to move in a second direction relative to the first support member 36.

[0063] When viewed from the optical axis direction, the position of point P where the extension line L1 and the extension line L2 intersect is different from the position of the optical axis OA. In other words, when viewed from the optical axis direction, point P is shifted in the radial direction of the lens device 10 with respect to the optical axis OA. Specifically, when viewed from the optical axis direction, the first moving member 42A is disposed on the opposite side of the second moving member 42B with respect to the optical axis OA, and the second moving member 42B is disposed on the opposite side of the first moving member 42A with respect to the optical axis OA. As a result, point P is shifted to the opposite side of the first moving member 42A and the opposite side of the second moving member 42B with respect to the optical axis OA.

[0064] The first holding member 34 has a plurality of first regulating rollers 54. The first regulating rollers 54 are roller members formed in a shaft shape and have an axis line L. The first regulating rollers 54 are rotatably supported on a shaft provided in the first holding member 34. Note that, instead of the first regulating rollers 54, a shaft-shaped member may be used as long as it has the axis line L.

[0065] Hereinafter, when it is necessary to distinguish between the multiple first regulating rollers 54, the multiple first regulating rollers 54 will be referred to as first regulating roller 54A, first regulating roller 54B, and first regulating roller 54C, respectively. The first regulating roller 54A is an example of a "first shaft member" according to the technology of the present disclosure, the first regulating roller 54B is an example of a "second shaft member" according to the technology of the present disclosure, and the first regulating roller 54A is an example of a "third shaft member" according to the technology of the present disclosure.

[0066] In the following description, when it is necessary to distinguish between the axes L of the first regulating rollers 54, the axis L of the first regulating roller 54A will be referred to as the axis La, the axis L of the first regulating roller 54B will be referred to as the axis Lb, and the axis L of the first regulating roller 54C will be referred to as the axis Lc. The first regulating rollers 54 will be described in detail later.

[0067] The first moving member 42A is disposed in a first region A1 formed by the axis La of the first regulating roller 54A and the axis Lb of the first regulating roller 54B. The second moving member 42B is disposed in a second region A2 formed by the axis Lb of the first regulating roller 54B and the axis Lc of the first regulating roller 54C. Point P is disposed in a third region A3 formed by the axis Lc of the first regulating roller 54C and the axis La of the first regulating roller 54A.

[0068] The first region A1 corresponds to the range of the smaller angle between the axis La of the first regulating roller 54A and the axis Lb of the first regulating roller 54B. The second region A2 corresponds to the range of the smaller angle between the axis Lb of the first regulating roller 54B and the axis Lc of the first regulating roller 54C. The third region A3 corresponds to the range of the smaller angle between the axis Lc of the first regulating roller 54C and the axis La of the first regulating roller 54A.

[0069] The holding frame 20A is provided with a plurality of eccentric pins 55. As an example, the number of the plurality of eccentric pins 55 is two. The eccentric pins 55 are arranged with their axial direction aligned in the optical axis direction. The eccentric pins 55 have an eccentric structure, and when the eccentric pins 55 are rotated, the holding frame 20A (see FIGS. 7 and 8) moves relative to the lens barrel 14 in a direction intersecting with the optical axis OA.

[0070] The lens device 10 includes a pressing member 56. The pressing member 56 is disposed radially outward of the inner cylinder portion 38. When viewed from the optical axis direction, the pressing member 56 is disposed in a fourth region A4 formed by the extension lines L1 and L2. The fourth region A4 is a region corresponding to the range of the smaller angle between the extension lines L1 and L2. The pressing member 56 is formed of, for example, a spring member such as a torsion spring. The pressing member 56 presses the first holding member 34 toward the optical axis OA.

[0071] The first holding member 34 is restricted from rotating with respect to the first support member 36 by the rotation restricting portion 58. The rotation restricting portion 58 is disposed in the third region A3 when viewed from the optical axis direction.

[0072] An opening 60A is formed in the outer tube 24 of the lens barrel 14 (specifically, the mounting portion 16), an opening 62A is formed in the cam tube 28, an opening 64A is formed in the inner tube 26 of the lens barrel 14, and an opening 66A is formed in the hood member 22 (see FIGS. 8 and 9). As an example, the openings 60A, 62A, 64A, and 66A are each a through hole. Note that the openings 60A, 62A, 64A, and 66A may be a notch other than a through hole. The openings 60A, 62A, 64A, and 66A are formed at positions corresponding to the first moving member 42A.

[0073] Similarly, the outer cylinder 24 of the lens barrel 14, the cam cylinder 28, the inner cylinder 26 of the lens barrel 14, and the hood member 22 are formed with openings 60B, 62B, 64B, and 66B similar to the openings 60A, 62A, 64A, and 66A at positions corresponding to the second moving member 42B. The openings 60B, 62B, 64B, and 66B have the same configuration as the openings 60A, 62A, 64A, and 66A, except that their positions are different. In FIG. 8, the openings 60B, 62B, 64B, and 66B are shown in parentheses with the openings 60A, 62A, 64A, and 66A.

[0074] The outer cylinder 24 of the lens barrel 14 is an example of a "side portion" according to the technology of the present disclosure. The opening 60A is an example of a "first opening" according to the technology of the present disclosure, and the opening 60B is an example of a "second opening" according to the technology of the present disclosure.

[0075] The opening 62A of the cam barrel 28 moves in the circumferential direction of the lens device 10 relative to the opening 60A of the lens barrel 14 as the cam barrel 28 rotates. Furthermore, the opening 66A of the hood member 22 and the first moving member 42A move in the optical axis direction relative to the opening 60A of the lens barrel 14 as the holding frame 20A moves when the cam barrel 28 rotates. When the lenses 18 move to the wide-angle end (see FIGS. 7 and 8), the opening 62A of the cam barrel 28 and the opening 66A of the hood member 22 communicate with the opening 60A of the lens barrel 14. Furthermore, when the lenses 18 move to the wide-angle end, the first holding member 34 moves to a position on the objective side, and the first moving member 42A (specifically, the head of the screw 44A) is disposed at a position corresponding to the opening 62A of the cam barrel 28 and the opening 60A of the lens barrel 14. The position of the first holding member 34 when the multiple lenses 18 are moved to the wide-angle end (hereinafter referred to as the "first position") is an example of the "first position" according to the technology of the present disclosure.

[0076] A groove 68A, for example, in a + shape or a - shape, is formed on the top surface of the head of the screw 44A. In Figs. 8 and 9, a + shape groove 68A is shown. When the lenses 18 are moved to the wide-angle end, the opening 62A of the cam barrel 28 and the opening 66A of the hood member 22 communicate with the opening 60A of the lens barrel 14, and the head of the screw 44A is disposed in a position corresponding to the opening 62A of the cam barrel 28 and the opening 60A of the lens barrel 14, it becomes possible to insert a bit (not shown) into the openings 60A, 62A, 64A, and 66A and rotate the screw 44A by the bit through the openings 60A, 62A, 64A, and 66A. Rotating the screw 44A corresponds to operating the first moving member 42A.

[0077] Similarly, the opening 62B of the cam barrel 28 moves in the circumferential direction of the lens device 10 relative to the opening 60B of the lens barrel 14 as the cam barrel 28 rotates. Furthermore, the opening 66B of the hood member 22 and the second moving member 42B move in the optical axis direction relative to the opening 60B of the lens barrel 14 as the holding frame 20A moves when the cam barrel 28 rotates. When the lenses 18 move to the wide-angle end (see FIGS. 7 and 8), the opening 62B of the cam barrel 28 and the opening 66B of the hood member 22 communicate with the opening 60B of the lens barrel 14. Furthermore, when the lenses 18 move to the wide-angle end, the first holding member 34 moves to a position on the objective side, and the second moving member 42B (specifically, the head of the screw 44B) is disposed at a position corresponding to the opening 62B of the cam barrel 28 and the opening 60B of the lens barrel 14.

[0078] A groove 68B, for example, in a + shape or a - shape, is formed on the top surface of the head of the screw 44B. When the lenses 18 are moved to the wide-angle end, the opening 62B of the cam barrel 28 and the opening 66B of the hood member 22 communicate with the opening 60B of the lens barrel 14, and the head of the screw 44B is disposed in a position corresponding to the opening 62B of the cam barrel 28 and the opening 60B of the lens barrel 14, it becomes possible to insert a bit (not shown) into the openings 60B, 62B, 64B, and 66B and rotate the screw 44B by the bit through the openings 60B, 62B, 64B, and 66B. Rotating the screw 44B corresponds to operating the second moving member 42B.

[0079] As shown in Fig. 9, the holding frame 20B has a second holding member 74 and a second support member 76. The configurations of the second holding member 74 and the second support member 76 are similar to those of the first holding member 34 and the first support member 36 described above. The second holding member 74 is an example of a "second holding member" according to the technology of the present disclosure. The second support member 76 is an example of a "second support member" according to the technology of the present disclosure.

[0080] The second holding member 74 holds the lens 18B1, and the second support member 76 holds the lenses 18B2 to 18B6. The lens 18B1 is an example of a "second lens" according to the technology of the present disclosure. The lens 18B1 is disposed on the objective side of the lenses 18B2 to 18B6.

[0081] Moreover, the holding frame 20B has a first moving member 82A and a second moving member 82B. The second moving member 82B has the same configuration as the first moving member 82A, except that the second moving member 82B is located in a different position from the first moving member 82A. In FIG. 9, the reference numeral of the first moving member 82A is indicated with the reference numeral of the second moving member 82B in parentheses. The configurations of the first moving member 82A and the second moving member 82B provided in the holding frame 20B are the same as the configurations of the first moving member 42A and the second moving member 42B provided in the holding frame 20A described above.

[0082] An opening 90A is formed in the outer cylinder 24 of the lens barrel 14, an opening 92A is formed in the cam cylinder 28, and an opening 94A is formed in the inner cylinder 26 of the lens barrel 14. The openings 90A, 92A, and 94A are formed at positions corresponding to the first moving member 82A. When the lenses 18 are moved to the telephoto end, the opening 92A of the cam cylinder 28 communicates with the opening 90A of the lens barrel 14. When the lenses 18 are moved to the telephoto end, the first moving member 82A (specifically, the head of the screw) is disposed at a position corresponding to the opening 92A of the cam cylinder 28 and the opening 90A of the lens barrel 14. In this state, it becomes possible to insert a bit (not shown) into the openings 90A, 92A, and 94A and rotate the screw with the bit.

[0083] Similarly, openings 90B, 92B, and 94B similar to openings 90A, 92A, and 94A are formed in the outer cylinder 24, cam cylinder 28, and inner cylinder 26 of the lens barrel 14 at positions corresponding to the second moving member 82B. The openings 90B, 92B, and 94B have the same configuration as the openings 90A, 92A, and 94A, except that their positions are different. In Figure 9, the openings 90B, 92B, and 94B are indicated in parentheses with the reference numerals of the openings 90A, 92A, and 94A.

[0084] Further, the configuration around the first moving member 82A and the second moving member 82B in the holding frame 20B is similar to the configuration around the first moving member 42A and the second moving member 42B in the holding frame 20A described later (see FIGS. 10 to 12).

[0085] 10 to 12 show the configuration of the first moving member 42A and the surroundings in the holding frame 20A. In FIGS. 11 and 12, the first moving member 42A is omitted from the illustration. The first support member 36 has a housing portion 110. The housing portion 110 is formed in a part of the outer tube portion 40 of the first support member 36. The housing portion 110 is formed in a box shape and houses the fixing portion 48A. The housing portion 110 also houses the nut 46A arranged inside the fixing portion 48A. In other words, the housing portion 110 houses the screw portion in which the shaft portion of the screw 44A and the nut 46A are screwed together.

[0086] Further, the outer cylinder portion 40 of the first support member 36 has a protrusion 112. Specifically, the storage portion 110 has an opposing surface 110A that faces the head of the screw 44A, and the protrusion 112 is formed on the opposing surface 110A. The opposing surface 110A intersects with the first direction (for example, perpendicularly). The opposing surface 110A is an example of a "surface intersecting with the first direction" according to the technology of the present disclosure. The head of the screw 44A abuts against the top surface of the protrusion 112. The top surface of the protrusion 112 is a convex curved surface. The head of the screw 44A abuts against the top surface of the protrusion 112 to move the first holding member 34.

[0087] Specifically, the protrusion 112 has a first protrusion 112A and a second protrusion 112B. The first protrusion 112A is formed on a first side relative to the insertion hole 50A, and the second protrusion 112B is formed on a second side (i.e., the side opposite to the first side) relative to the insertion hole 50A.

[0088] The extension direction of the first protrusion 112A and the second protrusion 112B intersects with a first direction which is the movement direction of the first moving member 42A. The extension direction of the first protrusion 112A and the second protrusion 112B also intersects with a second direction which is the movement direction of the second moving member 42B. As an example, the extension direction of the first protrusion 112A and the second protrusion 112B is perpendicular to the first direction and the second direction, and is parallel to the optical axis direction. The extension direction of the first protrusion 112A and the second protrusion 112B is an example of a "third direction" according to the technology of the present disclosure.

[0089] 13 shows the holding frame 20A. The first holding member 34 has a first regulating roller 54. The first regulating roller 54 protrudes from the outer periphery of the first holding member 34 radially outward of the first holding member 34. The first regulating roller 54 is a roller-shaped member rotatably supported on a shaft. The first regulating roller 54 is an example of a "regulating member" and a "first regulating member" according to the technology of the present disclosure.

[0090] The first support member 36 has a first engagement hole 70 at a position corresponding to the first regulating roller 54. The first engagement hole 70 is formed in an elongated hole shape with the circumferential direction of the first support member 36 as the longitudinal direction. The first engagement hole 70 is an example of an "engagement hole" according to the technology of the present disclosure. Although one first regulating roller 54 and one first engagement hole 70 are illustrated in FIG. 13, three first regulating rollers 54 and three first engagement holes 70 are provided in the holding frame 20A at intervals in the circumferential direction of the holding frame 20A.

[0091] The first regulating roller 54 is inserted into the first engagement hole 70 and engaged with the first engagement hole 70. By engaging the first regulating roller 54 with the first engagement hole 70, the movement of the first holding member 34 in the optical axis direction relative to the first support member 36 is restricted. In addition, by inserting the first regulating roller 54 into the elongated first engagement hole 70, the first holding member 34 is allowed to be moved relative to the first support member 36 using the above-mentioned first moving member 42A and second moving member 42B (see FIG. 7 ) within a range in which the first regulating roller 54 can move in the first engagement hole 70. By moving the first holding member 34 relative to the first support member 36, the position of the first holding member 34 is adjusted relative to the first support member 36.

[0092] The first regulating roller 54 and the periphery of the first engagement hole 70 are bonded together using an adhesive, as described below. The first holding member 34 is allowed to be moved relative to the first support member 36 using the first moving member 42A and the second moving member 42B before bonding.

[0093] 14 shows the holding frame 20B. The second holding member 74 has a second regulating roller 84. The second regulating roller 84 protrudes from the outer periphery of the second holding member 74 to the outside in the radial direction of the second holding member 74. The second regulating roller 84 is configured by a roller member. The second regulating roller 84 is supported by the second holding member 74 so as to be rotatable around the radial direction of the second holding member 74. The second regulating roller 84 is an example of a "second regulating member" according to the technology of the present disclosure.

[0094] The second support member 76 has a second engagement hole 100 at a position corresponding to the second regulating roller 84. The second engagement hole 100 is formed in an elongated hole shape with the longitudinal direction being the circumferential direction of the second support member 76. Although one second regulating roller 84 and one second engagement hole 100 are illustrated in Fig. 14, three each of the second regulating rollers 84 and the second engagement holes 100 are provided in the holding frame 20B at intervals in the circumferential direction of the holding frame 20B.

[0095] The second regulating roller 84 is inserted into the second engagement hole 100 and engaged with the second engagement hole 100. By engaging the second regulating roller 84 with the second engagement hole 100, the movement of the second holding member 74 in the optical axis direction relative to the second support member 76 is regulated. In addition, by inserting the second regulating roller 84 into the oblong second engagement hole 100, the second holding member 74 is allowed to be moved relative to the second support member 76 using the above-mentioned first moving member 82A and second moving member 82B (see FIG. 9 ) within a range in which the second regulating roller 84 can move in the second engagement hole 100. By moving the second holding member 74 relative to the second support member 76, the position of the second holding member 74 is adjusted relative to the second support member 76.

[0096] The second regulating roller 84 and the periphery of the second engagement hole 100 are bonded together using an adhesive, as described below. The second holding member 74 is allowed to be moved relative to the second support member 76 using the first moving member 82A and the second moving member before bonding.

[0097] FIG. 15 shows the objective side portion of the lens barrel 14. The first regulating roller 54 and the second regulating roller 84 are arranged side by side in the optical axis direction. The lens barrel 14 (specifically, the mounting portion 16) has an opening 120. The opening 120 is an opening different from the openings 60A, 60B, 90A, and 90B. As an example, the opening 120 is a through hole. Note that the opening 120 may be a notch other than a through hole. The opening 120 is an example of a "third opening" according to the technology of the present disclosure.

[0098] The first regulating roller 54, the first engagement hole 70, the second regulating roller 84, and the second engagement hole 100 move in the optical axis direction relative to the opening 120 as the holding frames 20A and 20B move in the optical axis direction. When the lenses 18 move to the telephoto end, the first regulating roller 54, the first engagement hole 70, the second regulating roller 84, and the second engagement hole 100 are disposed at a position corresponding to the opening 120. The position of the first holding member 34 when the lenses 18 move to the telephoto end (hereinafter referred to as the "second position") is an example of the "second position" according to the technology of the present disclosure.

[0099] In a state where the lenses 18 are moved to the telephoto end and the first regulating roller 54, the first engagement hole 70, the second regulating roller 84, and the second engagement hole 100 are arranged at positions corresponding to the opening 120, a nozzle (not shown) for applying an adhesive is inserted into the opening 120. Examples of the adhesive include ultraviolet curing resin, thermoplastic resin, and thermosetting resin. Then, the adhesive is applied to the first regulating roller 54 and the periphery of the first engagement hole 70, and the first regulating roller 54 is fixed to the first support member 36 by the adhesive. Also, the adhesive is applied to the second regulating roller 84 and the periphery of the second engagement hole 100, and the second regulating roller 84 is fixed to the second support member 76 by the adhesive.

[0100] The first regulating roller 54 is fixed to the first support member 36 with an adhesive after the position of the first holding member 34 has been adjusted relative to the first support member 36. Similarly, the second regulating roller 84 is fixed to the second support member 76 with an adhesive after the position of the second holding member 74 has been adjusted relative to the second support member 76.

[0101] Next, a method for manufacturing the lens device 10 according to this embodiment will be described.

[0102] 16 shows a flow of a manufacturing method for the lens device 10 according to this embodiment. The manufacturing method for the lens device 10 includes an assembly process ST10, an optical adjustment process ST12, a bonding process ST14, a mounting process ST16, and an inspection process ST18.

[0103] In the assembly process ST10, among the members constituting the lens device 10, a plurality of members excluding the ring member 12 are assembled.

[0104] The optical adjustment step ST12 includes a first step ST12A, a second step ST12B, a third step ST12C, and a fourth step ST12D.

[0105] The first step ST12A is performed in a state where the multiple lenses 18 have been moved to the telephoto end. In the first step ST12A, the position of lens 18B1, which is arranged on the objective side among the lenses 18 of the second group, is adjusted. The adjustment of the position of lens 18B1 is performed by the first moving member 82A and / or the second moving member 82B. The first step is an example of an "adjustment step" according to the technology of the present disclosure.

[0106] In the second step ST12B, the positions of the first group of lenses 18 are adjusted. The adjustment of the positions of the first group of lenses 18 is performed by an eccentric pin 55.

[0107] The third step ST12C is performed in a state where the lenses 18 are moved to the wide-angle end. In the third step ST12C, the position of the lens 18A1 arranged on the objective side among the lenses 18 of the first group is adjusted. The adjustment of the position of the lens 18A1 is performed by the first moving member 42A and / or the second moving member 42B.

[0108] Specifically, when the multiple lenses 18 move to the wide-angle end, the first moving member 42A (specifically, the head of the screw 44A) is disposed at a position corresponding to the opening 62A of the cam barrel 28 and the opening 60A of the lens barrel 14. Similarly, when the multiple lenses 18 move to the telephoto end, the second moving member 42B (specifically, the head of the screw 44B) is disposed at a position corresponding to the opening 62B of the cam barrel 28 and the opening 60B of the lens barrel 14.

[0109] Then, the position of the first retaining member 34 is adjusted relative to the first support member 36 by inserting a bit into the openings 60A, 62A, 64A, 66A and rotating the screw 44A of the first movable member 42A with the bit through the openings 60A, 62A, 64A, 66A, and / or by inserting a bit into the openings 60B, 62B, 64B, 66B and rotating the screw 44B of the second movable member 42B with the bit through the openings 60B, 62B, 64B, 66B.

[0110] Here, when the position of the first holding member 34 is adjusted by the second moving member 42B, the head of the screw 44A of the first moving member 42A comes into contact (i.e., slides) with the protrusion 112, and the first holding member 34 moves in the second direction. As a result, for example, compared to when the head of the screw 44A of the first moving member 42A comes into contact with the opposing surface 110A, the frictional resistance force against the movement of the first holding member 34 in the second direction is reduced, and the load (i.e., moment) generated on the first moving member 42A side can be reduced.

[0111] Similarly, since the protrusion portion 112 is also applied to the second moving member 42B, when the position of the first retaining member 34 is adjusted by the first moving member 42A, the frictional resistance force against the movement of the first retaining member 34 in the first direction is reduced, thereby reducing the load generated on the second moving member 42B side.

[0112] In the fourth step ST12D, a resolution check test is performed on the lens device 10. If the optical characteristics of the lens device 10 do not satisfy the criteria as a result of the resolution check test, the process returns to the first step ST12A, and if the optical characteristics of the lens device 10 satisfy the criteria, the process proceeds to the bonding step ST14.

[0113] The bonding step ST14 is performed in a state where the lenses 18 are moved to the telephoto end. In the state where the lenses 18 are moved to the telephoto end, the first regulating roller 54, the first engagement hole 70, the second regulating roller 84, and the second engagement hole 100 are disposed at positions corresponding to the opening 120.

[0114] Then, in the bonding process ST14, a nozzle (not shown) for applying an adhesive is inserted into the opening 120, and the adhesive is applied to the first regulating roller 54 and the periphery of the first engagement hole 70. As a result, the first regulating roller 54 is fixed to the first support member 36 with the adhesive. Similarly, the adhesive is applied to the second regulating roller 84 and the periphery of the second engagement hole 100. As a result, the second regulating roller 84 is fixed to the second support member 76 with the adhesive.

[0115] In addition, in the bonding step ST14, the first holding member 34 and the first support member 36 constituting the holding frame 20A are bonded at a plurality of circumferential locations (for example, portions other than the first moving member 42A, the second moving member 42B, and the eccentric pin 55). Similarly, the second holding member 74 and the second support member 76 constituting the holding frame 20B are bonded at a plurality of circumferential locations.

[0116] In the attachment step ST16, the ring member 12 is attached to the outer periphery of the attachment portion 16. As a result, the openings 60A, 60B, 90A, 90B, and 120 formed in the attachment portion 16 are covered by the ring member 12.

[0117] In the inspection process ST18, a resolution check test is performed on the lens device 10. If the result of the resolution check test shows that the optical characteristics of the lens device 10 do not satisfy the criteria, the process returns to the first process ST12A, and if the optical characteristics of the lens device 10 satisfy the criteria, the manufacturing method for the lens device 10 ends.

[0118] Next, the effects of this embodiment will be described.

[0119] As described above in detail, the lens device 10 includes the first holding member 34 that holds the lens 18, the first moving member 42A that moves the first holding member 34 in the first direction, and the second moving member 42B that moves the first holding member 34 in the second direction. When viewed from the optical axis direction, the position of point P where the extension line L1 in the first direction, which is the moving direction of the first moving member 42A, and the extension line L2 in the second direction, which is the moving direction of the second moving member 42B, intersect is different from the position of the optical axis OA. Therefore, for example, compared to the case where the position of point P is the same as the position of the optical axis OA, the first moving member 42A and / or the second moving member 42B are disposed at a position shifted from the diameter of the lens device 10, so that the lens device 10 can be made smaller (particularly, smaller in the radial direction).

[0120] Further, the first support member 36 has a protrusion 112, and the first moving member 42A abuts against the protrusion 112 to move the first holding member 34 in the first direction. Here, when the position of the first holding member 34 is adjusted by the second moving member 42B, the first moving member 42A abuts (i.e., slides) against the protrusion 112, and the first holding member 34 moves in the second direction. As a result, for example, compared to when the first moving member 42A abuts against the opposing surface 110A, the frictional resistance force against the movement of the first holding member 34 in the second direction is reduced, so that the load (i.e., moment) generated on the first moving member 42A side can be reduced. Similarly, since the protrusion 112 is also applied to the second moving member 42B, when the position of the first holding member 34 is adjusted by the first moving member 42A, the frictional resistance force against the movement of the first holding member 34 in the first direction is reduced, so that the load generated on the second moving member 42B side can be reduced.

[0121] Furthermore, the protrusion 112 has a first protrusion 112A and a second protrusion 112B, which extend along a direction intersecting the first direction. Therefore, for example, when the position of the first holding member 34 is adjusted by the second moving member 42B, the first moving member 42A abuts against the first protrusion 112A and the second protrusion 112B in a well-balanced manner, and therefore, compared to, for example, a case in which the protrusion 112 has only one of the first protrusion 112A and the second protrusion 112B, the load generated on the second moving member 42B side can be further reduced.

[0122] Furthermore, the first protrusion 112A and the second protrusion 112B are provided on an opposing surface 110A that is a surface that intersects with the first direction. Therefore, for example, when adjusting the position of the first holding member 34 by the second moving member 42B whose moving direction is a second direction that intersects with the first direction, the first moving member 42A can be brought into sliding contact with the first protrusion 112A and the second protrusion 112B.

[0123] In addition, the top surface of the protrusion 112 is a convex curved surface. Therefore, for example, compared to when the top surface of the protrusion 112 is a flat surface, it is possible to reduce frictional resistance when the first moving member 42A slides against the protrusion 112. In addition, even when the first holding member 34 rotates relative to the first support member 36 (i.e., the mounting angle is adjusted), the first moving member 42A can maintain a state in which it abuts against the protrusion 112.

[0124] Moreover, the first support member 36 has a storage portion 110, and the first moving member 42A has a screw 44A and a nut 46A. The nut 46A is stored in the storage portion 110. Therefore, even if a foreign object is generated due to friction between the screw 44A and the nut 46A when the screw 44A is rotated, the foreign object can be prevented from being released to the outside of the storage portion 110.

[0125] Furthermore, the lens barrel 14 has an opening 60A in the outer tube 24, and the first moving member 42A is disposed at a position corresponding to the opening 60A. Therefore, by operating the first moving member 42A through the opening 60A, the first holding member 34 can be moved in the first direction. Similarly, the lens barrel 14 has an opening 60B in the outer tube 24, and the second moving member 42B is disposed at a position corresponding to the opening 60B. Therefore, by operating the second moving member 42B through the opening 60B, the first holding member 34 can be moved in the second direction.

[0126] In addition, the first holding member 34 is supported so as to be movable in the optical axis direction relative to the lens barrel 14, and the first moving member 42A is disposed at a position corresponding to the opening 60A when the plurality of lenses 18 are moved to the telephoto end. Therefore, by moving the plurality of lenses 18 to the telephoto end, the position of the first holding member 34 can be adjusted by operating the first moving member 42A through the opening 60A. Similarly, the second moving member 42B is disposed at a position corresponding to the opening 60B when the plurality of lenses 18 are moved to the telephoto end. Therefore, by moving the plurality of lenses 18 to the telephoto end, the position of the first holding member 34 can be adjusted by operating the second moving member 42B through the opening 60B.

[0127] Furthermore, the lens barrel 14 has an opening 120 in the outer tube 24, and the first holding member 34 has a first restricting roller 54 that restricts movement in the optical axis direction relative to the first support member 36. The first restricting roller 54 is disposed at a position corresponding to the opening 120. Therefore, by applying an adhesive to the first restricting roller 54 through the opening 120, the first restricting roller 54 and the first support member 36 can be bonded together.

[0128] In addition, the opening 120 is different from the openings 60A and 60B. Therefore, the openings 60A and 60B used when adjusting the position of the first holding member 34 and the opening 120 used when bonding the first regulating roller 54 and the first support member 36 can be used separately.

[0129] Furthermore, when the lenses 18 are moved to the telephoto end, the first regulating roller 54 is disposed at a position corresponding to the opening 120. Therefore, by moving the lenses 18 to the telephoto end, the first regulating roller 54 and the first support member 36 can be bonded together through the opening 120.

[0130] In addition, the position of the first holding member 34 when the first moving member 42A is disposed at a position corresponding to the opening 60A and the second moving member 42B is disposed at a position corresponding to the opening 60B (i.e., the first position) is different from the position of the first holding member 34 when the first regulating roller 54 is disposed at a position corresponding to the opening 120 (i.e., the second position). Therefore, it is possible to prevent a mistake in the order of the optical adjustment step ST12 (specifically, the third step 12C) of adjusting the position of the lens 18A1 by the first moving member 42A and / or the second moving member 42B and the bonding step ST14 of bonding the first holding member 34 and the first support member 36.

[0131] In addition, the second holding member 74 has a second regulating roller 84 that regulates movement in the optical axis direction relative to the second support member 76. The second regulating roller 84 is also disposed at a position corresponding to the opening 120. Therefore, by applying an adhesive to the second regulating roller 84 through the opening 120, the second regulating roller 84 and the second support member 76 can be adhered to each other.

[0132] Furthermore, when the lenses 18 are moved to the telephoto end, the second regulating roller 84 is disposed at a position corresponding to the opening 120. Therefore, by moving the lenses 18 to the telephoto end, the second regulating roller 84 and the second support member 76 can be bonded together through the opening 120.

[0133] Moreover, the first regulating roller 54 and the second regulating roller 84 are disposed at a position corresponding to a common opening 120. Therefore, the structure of the lens device 10 can be simplified compared to, for example, a case in which the first regulating roller 54 and the second regulating roller 84 are disposed at positions corresponding to separate openings.

[0134] In addition, the first moving member 42A is disposed on the opposite side of the second moving member 42B with respect to the optical axis OA when viewed from the optical axis direction, and the second moving member 42B is disposed on the opposite side of the first moving member 42A with respect to the optical axis OA when viewed from the optical axis direction. Therefore, compared to, for example, a case where the first moving member 42A is disposed on the second moving member 42B side with respect to the optical axis OA and / or a case where the second moving member 42B is disposed on the first moving member 42A side with respect to the optical axis OA, it is possible to suppress the influence of the load on the lens 18 when adjusting the first holding member 34. The load on the lens 18 in this case refers to an adjustment deviation caused by a moment acting on the lens 18, in other words, a phenomenon in which the second direction is unintentionally shifted when the lens 18 is adjusted in the first direction.

[0135] The lens device 10 further includes a pressing member 56 that presses the first holding member 34 toward the optical axis OA, and the pressing member 56 is disposed in a fourth region A4 formed by an extension line L1 in the first direction and an extension line L2 in the second direction when viewed from the optical axis direction. Therefore, a component force of the pressing force by the pressing member 56 acts in the first direction which is the moving direction of the first moving member 42A and in the second direction which is the moving direction of the second moving member 42B, so that rattling of the first holding member 34 can be more effectively suppressed compared to, for example, a case where the pressing member 56 is disposed in a position where the component force of the pressing force does not act in either the first direction or the second direction.

[0136] Next, a modification of this embodiment will be described.

[0137] 17 and 18 show modified examples of the openings 60A, 62A, 64A, and 66A corresponding to the first moving member 42A. In this modified example, the opening 60A formed in the outer tube 24 of the lens barrel 14 is tapered so that the diameter decreases toward the radial inside of the lens barrel 14. Similarly, the opening 64A formed in the inner tube 26 of the lens barrel 14 and the opening 66A formed in the hood member 22 are also tapered so that the diameter decreases toward the radial inside of the lens barrel 14. With this configuration, for example, the workability when inserting the bit 130 into the openings 60A, 64A, and 66A can be improved compared to a case where the inner diameters of the openings 60A, 64A, and 66A are constant.

[0138] In this modification, the top surface of the head of the screw 44A is formed as a tapered concave surface. This configuration can improve the ease of inserting the tip of the bit 130 into the groove 68A, compared to when the top surface is flat.

[0139] FIG. 19 shows a modified example of the protrusion 112. In this modified example, the protrusion 112 extends along a direction around an extension line L1 of the first direction. Even if configured in this way, when the position of the first holding member 34 is adjusted by the second moving member 42B, the head of the screw 44A of the first moving member 42A abuts (i.e., slides) against the protrusion 112, and the first holding member 34 moves in the second direction. As a result, for example, compared to when the head of the screw 44A of the first moving member 42A abuts against the opposing surface 110A, the frictional resistance force against the movement of the first holding member 34 in the second direction is reduced, so that the load (i.e., moment) generated on the first moving member 42A side can be reduced. Also, when configured in this way, for example, compared to when the protrusion 112 is formed as a ridge, the rigidity around the insertion hole 50A can be improved.

[0140] The modified examples shown in FIGS. 17 to 19 may also be applied to the configuration on the second moving member 42B side.

[0141] In the above embodiment, when viewed from the optical axis direction, the first moving member 42A is disposed on the opposite side of the second moving member 42B with respect to the optical axis OA, but the first moving member 42A may be disposed on the second moving member 42B side with respect to the optical axis OA. Similarly, the second moving member 42B may be disposed on the first moving member 42A side with respect to the optical axis OA.

[0142] In the above embodiment, the first moving member 42A is disposed at a position corresponding to the opening 60A when the multiple lenses 18 are moved to the wide-angle end, but may be disposed at a position corresponding to the opening 60A when the multiple lenses 18 are moved to the telephoto end. Also, the first moving member 42A may be disposed at a position corresponding to the opening 60A when the first moving member 42A is moved to a position other than the telephoto end or the wide-angle end.

[0143] Similarly, the second movable member 42B may be positioned at a position corresponding to the opening 60B when the multiple lenses 18 are moved to the telephoto end, or may be positioned at a position corresponding to the opening 60B when the multiple lenses 18 are moved to a position other than the telephoto end or the wide-angle end.

[0144] In addition, the position of the first retaining member 34 when the first movable member 42A is positioned at a position corresponding to the opening 60A may be different from the position of the first retaining member 34 when the second movable member 42B is positioned at a position corresponding to the opening 60B.

[0145] Furthermore, in the above embodiment, the first regulating roller 54 is disposed at a position corresponding to the opening 120 when the multiple lenses 18 are moved to the telephoto end, but may be disposed at a position corresponding to the opening 120 when the multiple lenses 18 are moved to the wide-angle end. Furthermore, the first regulating roller 54 may be disposed at a position corresponding to the opening 120 when the multiple lenses 18 are moved to a position other than the telephoto end or the wide-angle end.

[0146] Similarly, the second regulating roller 84 may be positioned at a position corresponding to the opening 120 when the multiple lenses 18 are moved to the wide-angle end, or may be positioned at a position corresponding to the opening 120 when the multiple lenses 18 are moved to a position other than the telephoto end or the wide-angle end.

[0147] Also, an opening corresponding to the first regulating roller 54 and an opening corresponding to the second regulating roller 84 may be provided separately. The position of the first holding member 34 when the first regulating roller 54 corresponds to an opening may be different from the position of the second holding member 74 when the second regulating roller 84 corresponds to an opening.

[0148] The above description and illustrations are detailed descriptions of the parts related to the technology of the present disclosure, and are merely an example of the technology of the present disclosure. For example, the above description of the configuration, function, action, and effect is an example of the configuration, function, action, and effect of the parts related to the technology of the present disclosure. Therefore, it goes without saying that unnecessary parts may be deleted, new elements may be added, or replacements may be made to the above description and illustrations, within the scope of the gist of the technology of the present disclosure. In addition, in order to avoid confusion and to facilitate understanding of the parts related to the technology of the present disclosure, the above description and illustrations omit explanations of technical common sense that do not require explanation in order to enable the implementation of the technology of the present disclosure.

[0149] In this specification, "A and / or B" is synonymous with "at least one of A and B." In other words, "A and / or B" means that it may be only A, only B, or a combination of A and B. In addition, in this specification, the same idea as "A and / or B" is also applied when three or more things are expressed by connecting them with "and / or."

[0150] All publications, patent applications, and standards mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent application, or standard was specifically and individually indicated to be incorporated by reference. [Explanation of symbols]

[0151] 10 Lens device 12 Ring member 14 Telescope tube 16 Mounting part 18 Lenses 19 Aperture 20A Retaining Frame 20B Retaining frame 20C holding frame 20D holding frame 22 Hood parts 24 Outer cylinder 26 Inner cylinder 28 Cam barrel 30A groove 30B Groove 30C groove 32A Roller 32B Lola 32C Lola 34 First holding member 36 Second support member 38 Inner cylinder 40 Outer cylinder 42A First moving member 42B Second moving member 44A Screw 44B Nut 46A Screw 46B Nut 48A Fixed part 48B Fixed part 50A Insertion Hole 50B Insertion hole 52A Insertion hole 52B Insertion hole 54 First Regulating Roller 55 Eccentric pin 56 Pressing member 58 Rotation control part 60A aperture 60B opening 62A aperture 62B opening 64A aperture 64B opening 66A aperture 66B opening 68A Groove 68B Groove 70 First engagement hole 74 Second retaining member 76 Second support member 82A First moving member 82B Second moving member 84 Second Regulating Roller 90A aperture 90B opening 92A aperture 92B opening 94A Aperture 94B opening 100 Second engagement hole 110 Storage unit 110A Opposite side 112 Protrusion 112A 1st protrusion 112B 2nd protrusion 120 aperture L1 extension line L2 extension line OA optical axis P point

Claims

1. A holding member for holding the lens; a first moving member provided on the holding member and configured to move the holding member in a first direction intersecting a direction of the optical axis; a second moving member provided on the holding member and configured to move the holding member in a second direction intersecting the direction of the optical axis; Equipped with When viewed from the direction of the optical axis, a position of a point where an extension line of the first direction, which is a moving direction of the first moving member, and an extension line of the second direction, which is a moving direction of the second moving member, intersect is different from a position of the optical axis. Lens device.

2. A support member for supporting the holding member is further provided. The support member has a protrusion, The first moving member abuts against the protrusion to move the holding member in the first direction.

2. The lens device according to claim 1.

3. The protrusion has a first protrusion and a second protrusion, The first protrusion portion and the second protrusion portion extend along a third direction intersecting the first direction. The lens device according to claim 2 .

4. The first protrusion and the second protrusion are provided on a plane intersecting the first direction.

4. The lens device according to claim 3.

5. The first moving member has a screw, The head of the screw abuts against the protrusion. The lens device according to claim 2 .

6. The top surface of the protrusion is a convex curved surface. The lens device according to claim 2 .

7. The first moving member has a screw, the support member has an insertion hole into which a shank of the screw is inserted, The first protrusion portion is formed on a first side relative to the insertion hole, The second protrusion is formed on a second side relative to the insertion hole. The lens device according to claim 3 .

8. The protrusion extends along a direction around an extension line of the first direction. The lens device according to claim 2 .

9. A support member for supporting the holding member is further provided. The support member has a housing portion, the first moving member has a rotating portion and a moving portion provided on the holding member and moving in an axial direction of the rotating portion in association with rotation of the rotating portion; The moving part is accommodated in the accommodation part. The lens device according to claim 1 .

10. a lens barrel that houses the holding member, the lens barrel has a first opening in a side surface portion, The first moving member is disposed at a position corresponding to the first opening. The lens device according to claim 1 .

11. the holding member is supported movably in the optical axis direction relative to the lens barrel, The first movable member is disposed at a position corresponding to the first opening when the holding member is moved to the first position. The lens device according to claim 10.

12. The first position is a position at the telephoto end or the wide-angle end of the holding member. The lens device of claim 11.

13. The first opening is formed in a tapered shape. The lens device according to claim 10.

14. The first moving member has a screw, A groove is formed on the top surface of the head of the screw, The top surface is formed by a tapered concave surface. The lens device according to claim 10.

15. the lens barrel has a second opening in a side surface portion, The second moving member is disposed at a position corresponding to the second opening. The lens device according to claim 10.

16. A support member for supporting the holding member; a lens barrel that houses the holding member and the support member; Further equipped with the lens barrel has a third opening on a side surface thereof, the holding member has a restricting member that restricts movement of the holding member in a direction of the optical axis relative to the support member, The restricting member is disposed at a position corresponding to the third opening. The lens device according to claim 1 .

17. a lens barrel that houses the holding member, the lens barrel has a first opening; the first moving member is disposed at a position corresponding to the first opening, The third opening is an opening different from the first opening. The lens arrangement of claim 16.

18. the holding member is supported movably in the optical axis direction relative to the lens barrel, The regulating member is disposed at a position corresponding to the third opening when the holding member is moved to the second position. The lens arrangement of claim 16.

19. a lens barrel that houses the holding member, the lens barrel has a first opening; the first movable member is disposed at a position corresponding to the first opening when the holding member is moved to the first position; The second position is a different position from the first position.

20. The lens arrangement of claim 18.

20. The second position is a position at the telephoto end or the wide-angle end of the holding member.

20. The lens arrangement of claim 18.

21. The support member has an engagement hole, The restricting member is engaged with the engaging hole. The lens arrangement of claim 16.

22. The engagement hole is disposed at a position corresponding to the third opening.

22. The lens arrangement of claim 21.

23. The regulating member is fixed to the supporting member by an adhesive. The lens arrangement of claim 16.

24. a first holding member serving as the holding member for holding a first lens serving as the lens; A first support member as the support member; a second holding member that holds the second lens; A second support member that supports the second holding member; Further equipped with The first holding member has a first restricting member as the restricting member, the second holding member has a second restricting member that restricts movement of the second support member in a direction along the optical axis, The first and second restricting members are disposed at positions corresponding to the third opening. The lens arrangement of claim 16.

25. the first moving member is disposed on an opposite side of the optical axis to the second moving member when viewed from the direction of the optical axis, The second moving member is disposed on an opposite side of the optical axis to the first moving member when viewed from the direction of the optical axis.

2. The lens device according to claim 1.

26. the holding member has a first shaft member, a second shaft member and a third shaft member, the first moving member is disposed in a first region defined by an axis of the first shaft member and an axis of the second shaft member when viewed from the direction of the optical axis, the second moving member is disposed in a second region defined by an axis of the second shaft member and an axis of the third shaft member when viewed from the optical axis direction, The point is disposed in a third region defined by an axis of the third shaft member and an axis of the first shaft member when viewed from the direction of the optical axis.

2. The lens device according to claim 1.

27. a pressing member that presses the holding member toward the optical axis, The pressing member is disposed in a fourth region defined by an extension line in the first direction and an extension line in the second direction when viewed from the optical axis direction.

2. The lens device according to claim 1.

28. A method for manufacturing a lens device according to claim 1, comprising the steps of: an assembly process for assembling a plurality of members including the holding member; an adjustment step of adjusting a position of the holding member by using the first moving member and / or the second moving member; A manufacturing method of a lens device comprising:

29. The lens device further includes a support member that supports the holding member. The support member has a protrusion, The adjusting step includes bringing the first moving member into contact with the protrusion and moving the holding member in the second direction by the second moving member. A method for manufacturing a lens device according to claim 28.

30. the lens device further includes a lens barrel that houses the holding member, the lens barrel has a first opening; the holding member is supported movably in the optical axis direction relative to the lens barrel, The adjusting step includes adjusting a position of the holding member by operating the first moving member through the first opening when the holding member is moved to a first position and the first moving member is disposed at a position corresponding to the first opening. A method for manufacturing the lens device according to claim 28.

31. the lens barrel has a second opening; The adjusting step includes a step of adjusting a position of the holding member by operating the second moving member through the second opening when the holding member is moved to a second position and the second moving member is disposed at a position corresponding to the second opening. A method for manufacturing a lens device according to claim 30.

32. The lens device comprises: A support member for supporting the holding member; a lens barrel that houses the holding member and the support member; Further equipped with the lens barrel has a third opening, the holding member has a restricting member that restricts movement of the holding member in a direction of the optical axis relative to the support member, The manufacturing method of the lens device further includes an adhering step of fixing the regulating member to the support member by an adhesive through the third opening when the holding member is moved to a second position and the regulating member is disposed at a position corresponding to the third opening. A method for manufacturing the lens device of claim 31.

Images