CN102385134A - Zoom lens barrel - Google Patents
Zoom lens barrel Download PDFInfo
- Publication number
- CN102385134A CN102385134A CN2011102566373A CN201110256637A CN102385134A CN 102385134 A CN102385134 A CN 102385134A CN 2011102566373 A CN2011102566373 A CN 2011102566373A CN 201110256637 A CN201110256637 A CN 201110256637A CN 102385134 A CN102385134 A CN 102385134A
- Authority
- CN
- China
- Prior art keywords
- frame
- zoom
- mentioned
- cam
- way
- 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.)
- Granted
Links
Images
Landscapes
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
The invention provides a zoom lens barrel. A withdrawing structure of a withdrawing lens frame has no limit to the configuration of a cam groove for driving forward and backward motions of the lens frame and the configuration of a shooting unit, and is also miniaturized. The zoom lens barrel (1) has a fixed frame (2); a cam frame (5) which is rotatingly driven relative to the fixed frame (2) and has a cam groove for driving the withdrawing lens frame; two zoom frames (8) which are driven by the cam frame (5) to advance and retreat and have withdrawing cams (8d) for driving the withdrawing lens frame; three zoom frames which are driven by the cam frame (5) to advance and retreat; and a withdrawing lens frame (12) which is rotatably supported on the lens frame on the three zoom frames to hold a withdrawing lens (33). Under the shooting state, the withdrawing lens frame (12) is located at an entry position of the withdrawing lens (33) on a light path. During the period of changing the motion from the shooting state to the contracting state, the cam groove (5d) of the cam frame (5) and the withdrawing cams (8d) of the two zoom frames (8) are rotatingly driven to retreat to a retreat position (P2).
Description
Technical field
The Zoom lens barrel that shortens when the present invention relates to have total length when keeping out of the way camera lens frame and non-photography state than photography state.
Background technology
As Zoom lens barrel in the past, patent documentation 1 disclosed Zoom lens barrel is the Zoom lens barrel that the total length of non-photography state when being contraction state shortens during than photography state.Like Figure 17, shown in Figure 180, this lens barrel A1 has: fixed frame A2, and it supports each picture frame parts; Rotating frame A3; The zoom drive source; The focusing drive source; Keep out of the way camera lens frame A10; Camera lens A23 is kept out of the way in its maintenance; Have rearward side-prominent teat A10h, drive, when photography state, make and keep out of the way camera lens A23 and be positioned on the light path by above-mentioned zoom drive source; With from photography state to the transfer of contraction state interlock ground, rotate with teat 10h and to keep out of the way outside the light path; And focus lens frame A13, it keeps focus lens, drives advance and retreat by above-mentioned focusing drive source.
And; Above-mentioned focus lens frame A13 is provided with the A13c of guide tracks portion; The A13c of this guide tracks portion be used for from photography state during to driving condition that the shrinkage direction that shortens drives not with keep out of the way camera lens frame A10 butt; If when the driving condition that drives to the shrinkage direction of above-mentioned shortening, produce unusual the driving; Then with the teat A10h butt of keeping out of the way camera lens frame A10, with this teat butt in along this teat of rotary motion trace guiding of this teat, thereby prevent to keep out of the way the interference of the camera lens frame A13 of camera lens frame A10 and rear side.
In addition, in above-mentioned Zoom lens barrel A1 in the past, keep out of the way camera lens frame A10 and keep out of the way the outer cam part of light path, will keep out of the way the rear side that cam A14 is fixed on fixed frame A2 as making.Say that at length this is kept out of the way on cam A14 is fixed on fixed frame A2 with the mode that is projected into phtographic lens optical axis O direction front side the holding plate A15 of rear side.The sensor base A16 that has installed camera element unit is installed at the back side of holding plate A15.From photography state when contraction state shifts; Keep out of the way cam A14 relatively when keeping out of the way camera lens frame A10; Be located at keep out of the way on the camera lens frame A10 from untie-sell A10c butt, slip, be rotated and be driven into the outer retreating position (Figure 17) of light path thereby keep out of the way camera lens frame A10.
[patent documentation 1] TOHKEMY 2009-25557 communique
In above-mentioned patent documentation 1 disclosed Zoom lens barrel A1, be used to make and keep out of the way the holding plate A15 that cam A14 is fixed on the rear side of fixed frame A2 that keeps out of the way that camera lens frame A10 keeps out of the way.Holding plate A15 engages with sensor base A16, on this sensor base A16, disposes the image unit A26 that is made up of imaging apparatus, light filter etc.Be configured in holding plate A15 when going up when keeping out of the way cam A14, the arrangement freedom of image unit A26 disappears, the restriction that is designed.Particularly have under the situation of image shake correction function, become spatially bigger restriction, hinder miniaturization at image unit.
And; Owing to keep out of the way on the holding plate A15 of rear side that cam A14 is configured in fixed frame A2; Thereby also there is such problem: in lens barrel, can not confirm to comprise and keep out of the way camera lens frame A10, keep out of the way the advance and retreat state of cam A14 at each interior picture frame with the part assembled state before holding plate A15, the sensor base A16 assembling.
And, keep out of the way cam A14 and need insert the logical side that is configured in the focus lens frame A13 of the rear side of keeping out of the way camera lens frame A10, so the shape of focus lens frame A13, configuration are restricted.
And; The rotational angle of the retreating position outside light path from the position on the light path of keeping out of the way camera lens frame A10 is big; In order to ensure this rotational angle, need will with keep out of the way cam A14 butt keep out of the way camera lens frame A10 from the position configuration of untie-sell A10c more near the position of center of rotation.Under the situation of having used such configuration, be difficult to make and keep out of the way camera lens frame A10 precision and turn to retreating position well, consider deviation to a certain degree at this retreating position, be necessary to obtain significantly surplus.From this point, it is difficult that the abundant miniaturization of lens barrel becomes.
Summary of the invention
The present invention makes in order to address the above problem; The purpose of this invention is to provide a kind of Zoom lens barrel that can realize miniaturization; This Zoom lens barrel is to have the Zoom lens barrel of under non-photography state, keeping out of the way of keeping out of the way the camera lens frame; Wherein, keep out of the way keeping out of the way mechanism and can not causing restriction of camera lens frame configuration and the configuration of image unit that picture frame advance and retreat drive the cam path of usefulness.
In order to solve above-mentioned problem, Zoom lens barrel of the present invention have under non-photography state, keep out of the way keep out of the way the camera lens frame, it is characterized in that said Zoom lens barrel has: fixed frame; The zoom drive source that zoom is used; First frame, it is rotated driving with respect to the said fixing frame by above-mentioned zoom drive source at least, and has the cam slot part; Second frame, it is driven by above-mentioned first frame advance and retreat, and has cam part; The 3rd frame, it is driven by above-mentioned first frame advance and retreat; And keep out of the way the camera lens frame; It is the frame that is supported on rotationally on above-mentioned the 3rd frame, keeps keeping out of the way camera lens, when being in photography state; Be in the above-mentioned camera lens of keeping out of the way and be positioned at the in-position on the light path; From above-mentioned photography state during the change action of above-mentioned non-photography state, by the above-mentioned cam slot part of above-mentioned first frame and be located at the above-mentioned cam part rotating drive on above-mentioned second frame, kept out of the way being driven into the above-mentioned lens retreat of keeping out of the way to the outer retreating position of light path.
According to the present invention; A kind of Zoom lens barrel that can realize miniaturization can be provided; This Zoom lens barrel is to have the Zoom lens barrel of under non-photography state, keeping out of the way of keeping out of the way the camera lens frame; Wherein, keep out of the way keeping out of the way mechanism and can not causing restriction of camera lens frame configuration and the configuration of image unit that picture frame advance and retreat drive the cam path of usefulness.
Description of drawings
Fig. 1 is that the Zoom lens barrel that an embodiment of the invention are shown is the front view under the contraction state at non-photography state;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that the Zoom lens barrel of Fig. 1 is the longitudinal section under the zoom wide-angle state at photography state;
Fig. 4 is the rear view of state that under the contraction state of the Zoom lens barrel of Fig. 1, has taken off the image unit of three groups of zoom frames, four groups of focusing frames and rear side;
Fig. 5 is a stereographic map of observing the state of the image unit that under the contraction state of the Zoom lens barrel of Fig. 1, has taken off three groups of zoom frames, four groups of focusing frames and rear side from rear side;
Fig. 6 is the rear view of state that under the zoom wide-angle state of the Zoom lens barrel of Fig. 1, has taken off the image unit of four groups of focusing frames and rear side;
Fig. 7 is a stereographic map of observing the state of the image unit that under the zoom wide-angle state of the Zoom lens barrel of Fig. 1, has taken off four groups of focusing frames and rear side from rear side;
Fig. 8 is a stereographic map of observing the cam frame of the Zoom lens barrel that is applied to Fig. 1 from rear side;
Fig. 9 is the cam path stretch-out view of inner peripheral surface of the cam frame of Fig. 8;
Figure 10 is the rear view of two groups of zoom frames that is applied to the Zoom lens barrel of Fig. 1;
Figure 11 is the B-B sectional view of Figure 10;
Figure 12 is the rear view of zoom wide-angle state of three groups of zoom frames keeping out of the way the camera lens frame that keeps being applied to the Zoom lens barrel of Fig. 1;
Figure 13 is a stereographic map of observing three groups of zoom frames of Figure 12 from rear side;
Figure 14 is a rear view of keeping out of the way the camera lens frame shown in Figure 12;
Figure 15 be illustrate when in the lens barrel at Fig. 3 when zoom wide-angle state is driven into contraction state by switching the cam follower of two groups of zoom frames, three groups of zoom frames and keep out of the way the camera lens frame from untie-sell with respect to the slide expanded map of the state that moves of the cam path of the inner peripheral surface of the cam frame of Fig. 9;
The sectional view of Figure 16 state that to be the butt follower of keeping out of the way the camera lens frame that Figure 12 is shown accordingly with Figure 15 move with respect to the projection cam of two groups of zoom frames of Figure 10;
Figure 17 is the longitudinal section of the contraction state of Zoom lens barrel in the past;
Figure 18 is the longitudinal section of zoom wide-angle state of the Zoom lens barrel in the past of Figure 17.
Label declaration
2: fixed frame; 5: cam frame (first frame); 5d: keep out of the way the camera lens frame and drive with cam path (cam slot part); 8: two groups of zoom frames (second frame); 8d: keep out of the way cam (cam part); 9: three groups of zoom frames (the 3rd frame); 12: keep out of the way the camera lens frame; 41: the incorporating section, unit (zoom drive source) of taking in spool gear etc.; P1: in-position; P2: retreating position.
Embodiment
Below, embodiment of the present invention is described.
Use Fig. 1～Figure 14 that the Zoom lens barrel 1 of an embodiment of the invention is described.
In addition, in following explanation, the optical axis of establishing phtographic lens is O, and establishing object side in this optical axis O direction is the place ahead, and being set as as side is rear (rear side).And the sense of rotation of each parts is represented by the sense of rotation of observing from rear side.And, with the direction of optical axis O quadrature in, when the photography posture of common camera, establishing left and right directions is directions X, establishing above-below direction is the Y direction.
Like Fig. 1～shown in Figure 3, Zoom lens barrel 1 has: fixed frame 2; Rotating frame 3, it is supported on the fixed frame 2, and driving is rotated and advances and retreat when zoom and during telescopic drive; Move frame 4, it is advanced and retreat with rotating frame 3 under the rotation restriction state; As the cam frame 5 of first frame, it is with rotating frame 3 rotations, and going forward side by side, it is moving to retire; Craspedodrome lead-frame 6, it is advanced and retreat with cam frame 5 under the rotation restriction state; And sensor unit back up pad 16, one supports sensor unit 15 at the back side of fixed frame 2 for it, can be in the displacement of XY direction.And; Zoom lens barrel 1 also has the picture frame that under the rotation restriction state, is driven by advance and retreat; That is, from front side be followed successively by one group of zoom frame 7, as two groups of zoom frames 8 of second frame, support three groups of zoom frames 9 and four groups of focusing frames 13 of conduct the 3rd frame of keeping out of the way camera lens frame 12.Zoom lens barrel 1 also has photographic optical system; That is a set of shots 31 that, keeps, two set of shots 32 that keep by two groups of zoom frames 8 by one group of zoom frame 7, by keeping out of the way that three set of shots that camera lens frame 12 keeps are promptly kept out of the way camera lens 33 and i.e. four set of shots 34 of the focus lens that keeps by four groups of focusing frames 13.
Fixed frame 2 is the parts with perimembranous in the cylinder, and perimembranous is provided with slot part and craspedodrome groove within it, and slot part is with being connected with the place ahead circumference slot part along circumference with respect to the spire of optical axis O inclination and forming, and the craspedodrome groove is along optical axis O.And, being provided with zoom unit and focusing unit at peripheral part, this zoom unit is the unit that is used to carry out the zoom drive of phtographic lens, comprises the zoom motor as the zoom drive source, gears row, the spool gear (not shown) that are incorporated in the incorporating section, unit 41; This focusing unit is to be used to carry out the unit that the focusing of phtographic lens drives, and comprises focusing motor 42, gear row, feeding screw, leading axle.In addition, spool gear (not shown) is supported on the interior perimembranous of fixed frame 2 under the state that exposes along the direction parallel with optical axis O.
Rotating frame 3 is parts cylindraceous, and rotatable and advance and retreat ground is embedded into the interior perimembranous of fixed frame 2, at the periphery rear portion be provided with cam follower and with the above-mentioned spool gear meshed gears 3a of portion.This rotating frame 3 is mounted under above-mentioned cam follower and state that the above-mentioned spire of fixed frame 2 engages, is driven by above-mentioned spool gear rotation via gear part 3a.Rotate on one side through this rotation, from punctured position reach photographic wide-angle position on one side, stretch out at this that above-mentioned cam follower engages with above-mentioned circumferential groove slidably under state, afterwards, be driven in rotation the position of looking in the distance in optical axis O direction.
Moving frame 4 is cylinder parts; Can be embedded into the relative rotation in the interior perimembranous of rotating frame 3; Guiding protuberance 4a is embedded in the craspedodrome groove 2c of fixed frame 2 slidably and is in the state (Fig. 4, Fig. 6) that is limited to rotate; With rotating frame 3 bayonet joint (bayonet), supported under the state that can advance and retreat along optical axis O direction one with the relative rotation.
Craspedodrome lead-frame 6 is cylinder parts, is embedded in the interior week of moving frame 4, and rearward end and cam frame 5 bayonet joint move with cam frame 5 advance and retreat under by the state that moves frame 4 restriction rotations.
As shown in Figure 8, cam follower 23 has facial 23a of circular cone and the front end pin 23b of portion, and the facial 23a of circular cone is embedded in the cam path that is located on the mobile frame 4, and the front end pin 23b of portion is embedded at outer circumferential side this cam path of perforation and is located in the craspedodrome groove on the rotating frame 3.Therefore, cam frame 5 is when rotating with rotating frame 3 one, and the cam path advance and retreat that are moved frame 4 in optical axis O direction drive.
Be provided with one group of zoom frame at the peripheral part of cam frame 5 and drive, be provided with two groups of zoom frames in interior perimembranous and drive with cam path 5b, three groups of zoom frame drivings with cam path 5c and keep out of the way the driving of camera lens frame with cam path 5d (Fig. 9) as the cam slot part with cam path 5a (Fig. 8).In addition, cam path 5d is made up of following: rear side is in open state, is formed on the craspedodrome cam slot part 5da of this open side along optical axis O direction; Inclination cam slot part 5db with respect to optical axis O inclination; Along withdrawing from of sense of rotation with cam slot part 5dc; And the rear peristome that is located at cam path 5d, be projected into the jut 5dd at rear from craspedodrome cam slot part 5da.Above-mentioned cam slot part with respect to should with the cam path of stating after this cam path engages of keeping out of the way camera lens frame 12 (Fig. 9, Figure 15) from the gapped state of untie-sell 12b.
One group of zoom frame 7 is cylinder-like parts, under the state that is limited to rotate, is embedded in the interior perimembranous of craspedodrome lead-frame 6, and is embedded in the peripheral part of cam frame 5 and supported.One set of shots 31 is kept by the front openings portion of one group of zoom frame 7, is provided with the lens barrier 35 of the front that can open and close this set of shots 31 in this front openings portion.The outstanding cam follower that is provided with of interior perimembranous at one group of zoom frame 7 is embedded in the cam path 5a of cam frame 5 slidably.Therefore, one group of zoom frame 7 follows the state that is rotated in by the 6 restriction rotations of craspedodrome lead-frame of cam frame 5 to be driven by advance and retreat down.
Like Figure 10, shown in Figure 11, two groups of zoom frames 8 are cylinder-like parts, and the interior week that is embedded into cam frame 5 slidably is interior and supported, and two set of shots 32 are kept by central opening portion.The guiding protuberance 9f of three groups of zoom frames 9 is embedded in the guiding groove 8b of the peripheral part that is located at two groups of zoom frames 8 slidably, and the cam follower 8c that is located at the peripheral part of two groups of zoom frames 8 is embedded into the cam path 5b interior (Fig. 9) of cam frame 5 slidably.Therefore, two groups of zoom frames 8 are followed the rotation of cam frame 5 driving of being advanced and retreat under the state of the restriction rotation via three groups of zoom frames 9 of the guiding of being kept straight on.
Be provided with along the upright overshooting shape cam part of optical axis O direction at the rear of two groups of zoom frames 8 and promptly keep out of the way cam 8d and to withdraw from the 8g of portion with the opposed rotation axis of the front end of rotation axis.Equipping position such as Figure 10, shown in Figure 11 of keeping out of the way cam 8d, be positioned at rotation axis withdraw from the 8g of portion be the center from two set of shots, 32 centers (O is consistent with optical axis) to counterclockwise tilt the direction of predetermined angular.Above-mentioned predetermined angular is the angle that can obtain to keep out of the way camera lens frame 12 needed rotational angles.Be provided with inclined cam surface 8da and the parallel sliding face 8db parallel at this overshooting shape fore-end of keeping out of the way cam 8d with optical axis O direction.
Like Figure 12, shown in Figure 13, three groups of zoom frames 9 are cylinder-like parts, and side is equipped with cover blade shape parts in front, keep out of the way camera lens frame 12 and are supported on cylinder interior rotationally.And, dispose at the rear of keeping out of the way camera lens frame 12 by shutter unit 11 (Fig. 2, Fig. 3) spring energized, that can move with respect to optical axis O direction advance and retreat.
Cylindrical portion periphery at three groups of zoom frames 9 is provided with cam follower 9b, is provided with guiding protuberance 9f in interior perimembranous, and a discoideus in the wings periphery is provided with guiding protuberance 9a.And, be provided with the axle supported hole 9d at the two ends of supporting rotation axis 25 in cylinder interior.And, be provided with the 9g of central opening portion of the camera lens maintaining part that can insert logical two groups of zoom frames 8 at cylinder front end face, side is provided with the upright camera lens frame of keeping out of the way with backstop 9c with keep out of the way cam inserting hole 9e in the wings.Keeping out of the way the rotation axis 25 that camera lens frame 12 is embedded in the supported hole 9d supports rotationally.
The guiding protuberance 9a of three groups of zoom frames 9 is embedded in the craspedodrome groove 4b that moves frame 4 (Fig. 4, Fig. 6) slidably, and cam follower 9b is embedded into the cam path 5c interior (Fig. 9) of cam frame 5 slidably.Therefore, three groups of zoom frames 9 are followed the rotation of cam frame 5 and are advanced and retreat and drive under the state that is moved frame 4 restriction rotations.
Shown in figure 14; Keep out of the way the parts that camera lens frame 12 is lever shapes; One end be provided with axis hole 12a that rotation axis 25 embeds rotationally with outstanding be arranged near this axis hole from untie-sell 12b; The other end is provided with backstop abutting part 12c and the facial 12d of driven butt, and what have optical axis O1 keeps out of the way camera lens 33 by keeping from axis hole 12a peristome spaced apart by a predetermined distance.This keeps out of the way torsion spring 26 clockwise application of force on Figure 12 that camera lens frame 12 is used as force application part.
Being in photography state, external force at Zoom lens barrel 1 does not act under the state of keeping out of the way camera lens frame 12; Keeping out of the way camera lens frame 12 is that the center clockwise rotates with rotation axis 25; The backstop 9c butt of backstop abutting part 12c and three groups of zoom frames 9 is kept out of the way camera lens 33 in light path of photography.That is, keep out of the way camera lens frame 12 and be positioned at the optical axis O1 in-position P1 (Fig. 6) consistent that keeps out of the way camera lens 33 with phtographic lens optical axis O.
When photography state switches to contraction state, keep out of the way the rotation that camera lens frame 12 is followed cam frame 5 at Zoom lens barrel 1, at first, push from untie-sell 12b, rotate predetermined angular towards keeping out of the way direction by cam path 5d.Afterwards; Keep out of the way camera lens frame 12 since three groups of zoom frames 9 and two groups of zoom frames 8 on optical axis O direction relatively near and push driven butt face 12d by the cam 8d that keeps out of the way of two groups of zoom frames 8, keep out of the way camera lens 33 and be rotated and be driven into the retreating position P2 (Fig. 4) that keeps out of the way from light path of photography.When contraction state switches to photography state, carry out and the rightabout action of above-mentioned action, keep out of the way camera lens frame 12 and be rotated from retreating position and be driven into in-position P1.In addition, about above-mentioned keep out of the way camera lens frame 12 from the in-position P1 to the rotation action of retreating position P2, the back be elaborated.
Four groups of focusing frames 13 can be advanced and retreat along optical axis O direction via leading axle to be supported movably, when focusing, is driven into focusing position by above-mentioned focusing unit advance and retreat.
Sensor unit back up pad 16 has been assembled rotating frame 3 and has been waited after each picture frame parts under the state that is assembled with sensor unit 15, under the state movable along the XY direction, be installed in the back side portion of fixed frame 2.
About the advance and retreat action of each the picture frame parts in the Zoom lens barrel 1 with said structure, use Fig. 9 to wait and describe.In addition; Below explanation be the initial Zoom lens barrel 1 of explanation hypothesis be in the state of looking in the distance of photography state, afterwards pass through photography state wide-angle state (Fig. 6), arrive the withdrawal action that non-photography state is a contraction state (Fig. 4); Yet during to the stretching out of photography state, carrying out the opposite action of above-mentioned withdrawal action from contraction state.
When Zoom lens barrel 1 is in when looking in the distance state; Cam path 5a, 5b, 5c with respect to cam frame 5; The cam follower of one group of zoom frame 7 (not shown) is positioned at the correspondence position of looking in the distance; Cam follower 8c, the 9b of two groups of zoom frames 8, three groups of zoom frames 9 also lay respectively at the correspondence position 8cT that looks in the distance, 8bT (Fig. 9), and frame separately reaches the position of looking in the distance.Owing to be in non-fastening state,, keep out of the way camera lens 33 and be located at the interior in-position P1 (Fig. 6) of light path of photography so keep out of the way acting force and the backstop 9c butt that camera lens frame 12 utilizes torsion spring 26 by what three groups of zoom frames 9 supported from untie-sell 12b.
When the above-mentioned state of looking in the distance switches to the wide-angle state; Cam frame 5 is rotated counterclockwise driving with rotating frame 3 by zoom motor 41; With respect to cam path 5a, 5b, the 5c of cam frame 5, the cam follower of one group of zoom frame 7 (not shown) moves to the wide-angle correspondence position, and; Cam follower 8c, the 9b of two groups of zoom frames 8, three groups of zoom frames 9 also move to wide-angle correspondence position 8cW, 9bW (Fig. 9) respectively, and frame separately moves to wide-angle position.Keep out of the way camera lens frame 12 and remain on in-position P1 (Fig. 6) same as before.
Next, when when the wide-angle state is withdrawn into contraction state, cam frame 5 also is rotated counterclockwise driving with rotating frame 3, and rotating frame 3 is retracted back into punctured position.Cam path 5a, 5b, 5c with respect to cam frame 5; The cam follower of one group of zoom frame 7 (not shown) moves to the contraction correspondence position; And; Cam follower 8c, the 9b of two groups of zoom frames 8, three groups of zoom frames 9 also move to wide-angle correspondence position 8cC, 9bC (Fig. 9) respectively, and frame separately is withdrawn into punctured position (Fig. 2).From above-mentioned wide-angle state is during the change action of contraction state; Keep out of the way camera lens frame 12 by the cam path 5d rotating drive of cam frame 5, next, kept out of the way cam 8d rotating drive by the overshooting shape of two groups of zoom frames 8; As stated, P1 moves to retreating position P2 (Fig. 6) from the in-position.
Under the contraction state of Zoom lens barrel 1; As shown in Figure 2; Rotating frame 3, mobile frame 4, craspedodrome lead-frame 6, cam frame 5 are incorporated in fixed frame 2 inside under coincidence status; And one group of zoom frame 7, two groups of zoom frames 8, three groups of zoom frames 9 and four groups of focusing frames 13 quilts under the minimum state in the gap of optical axis O direction are taken in.On the other hand; Keeping out of the way camera lens frame 12 turns to and keeps out of the way the retreating position P2 that camera lens 33 is kept out of the way from light path of photography; Through making three set of shots 33 and four set of shots 34 approaching as much as possible, can further shorten the total length of the optical axis O direction of Zoom lens barrel 1 under contraction state.
Here, use the action of keeping out of the way of keeping out of the way camera lens frame 12 of three groups of zoom frames 9 of detailed description such as Figure 15, Figure 16.
At Zoom lens barrel 1 from the change action initial stage of wide-angle state to contraction state; When make through being rotated counterclockwise of cam frame 5 cam frame 5 and three groups of zoom frames 9 relatively near the time; Be in wide-angle correspondence position 12bW (Figure 15) keep out of the way camera lens frame 12 from untie-sell 12b be located at the jut 5dd butt of the cam path peristome of cam frame 5, enter into afterwards in the cam path 5d and engage with craspedodrome cam slot part 5da.
Then when cam frame 5 rotation, on one side be pressed against in the craspedodrome cam slot part 5da from untie-sell 12b, Yi Bian move to the position 12b1 that relatively moves, 12b2,12b3 (Figure 15) along this cam slot part wall.Mobile through this from pushing of untie-sell 12b, keep out of the way camera lens frame 12 overcome torsion spring 26 directed force F 0 (Figure 16) and counterclockwise (Fig. 6 is last) rotate, backstop abutting part 12c leaves backstop 9c, begins from the in-position that P1 (Fig. 6) moves to retreating position P2.The facial 12d of driven butt also moves from wide-angle correspondence position 12dW (Figure 16) counterclockwise.
Next, when cam frame 5 rotation, be in the state that engage with inclination cam slot part 5db from untie-sell 12b, by the wall of this cam part pushed one side and move to relatively move position 12b4 (Figure 15) on one side, proceed to keep out of the way rotating counterclockwise of camera lens frame 12.
In the above-mentioned spinning movement of cam frame 5; Between the last shift position 8c3 of cam path 5b, the 5c of cam frame 5,9b3 and shift position 8c6,9b6 (Figure 15), two groups of zoom frames 8 and three groups of zoom frames 9 are approaching each other respectively for the cam follower 8c of two groups of zoom frames 8 and the cam follower 9b of three groups of zoom frames 9.Therefore, the cam 8d that keeps out of the way of two groups of zoom frames 8 inserts the inside that leads to the keeping out of the way cam inserting hole 9e of three groups of zoom frames 9 and enter into three groups of zoom frames 9.Therefore, the facial 12d of the driven butt of keeping out of the way camera lens frame 12 in clockwise rotating is near keeping out of the way cam 8d, and with the inclined cam surface 8da butt of keeping out of the way cam 8d.Afterwards, keep out of the way camera lens frame 12 from through before cam frame 5 cam path 5d via from the rotating drive state transitions of untie-sell 12b to through keeping out of the way the rotating drive state of cam 8d via the facial 12d of driven butt.
Then when the rotation of cam frame 5 is carried out; Two groups of zoom frames 8 and three groups of zoom frames 9 are relatively further approaching; The facial 12d of driven butt is tilted cam surface 8da and pushes and arrive the position 12d5 (Figure 16) that relatively moves, and keeps out of the way camera lens frame 12 and proceeds further to rotate counterclockwise.Move to the position 12b5 (Figure 15) that relatively moves that leaves from the wall of inclination cam slot part 5db through above-mentioned push action from untie-sell 12b.
And when two groups of zoom frames 8 and three groups of zoom frames 9 relatively near the time; The facial 12d of driven butt moves to the position 12d6 that relatively moves, 12d7 (Figure 16) on the parallel sliding face 8db that keeps out of the way cam 8d, keeps out of the way camera lens frame 12 and arrives retreating position P2 and remain on this position (Fig. 4).At this moment, rotating frame 3 waits other picture frame also to be retracted back into punctured position, and the contractive action of Zoom lens barrel 1 finishes.In addition, from withdrawing from, remain on non-fastening state (Figure 15) from untie-sell 12b with the position 12b6 that relatively moves the cam slot part 5dc, 12b7, wide-angle correspondence position 12bC.
In above-mentioned Zoom lens barrel 1; Through the driving This move with the cam path 5d of cam frame 5 be supported on rotationally in three groups of zoom frames 9 keep out of the way camera lens frame 12 from the in-position P1 to the first half of keeping out of the way driving of retreating position P2; The driving This move of keeping out of the way cam 8d with being located in two groups of frames 8 carries out latter half; Can obtain sufficient rotational angle, can make and keep out of the way the retreating position that camera lens frame 12 is positioned at more expectation.Then, owing to drive above-mentioned latter half, thereby can improve the positional precision of retreating position P2, need not to obtain the gap around the camera lens frame 12 of keeping out of the way of being kept out of the way morely, can further reduce the physical dimension of each picture frame by the cam 8d that keeps out of the way that leaves rotation axis 25.
And; As stated through keeping out of the way driving with 2 actions; The cam path 5d of the configurable interior perimembranous that is located at cam frame 5 and can not invade the zone of other cam path 5b, 5c, and, also can exceedingly not carry out cam path 5d to keeping out of the way the driving from untie-sell 12 of camera lens frame 12.
And; To keep out of the way on the back side side plate that cam A14 is located at fixed frame A2 unlike lens barrel A1 that kind in the past; But keep out of the way cam 8d through configuration on two groups of frames 8, and can under the part assembled state of each picture frame, confirm to keep out of the way the action of camera lens frame 12, the assembling inspection waits and becomes easy.Then, be to have under the situation of lens barrel of image shake correction function as this embodiment, keep out of the way cam to the configuration not restriction of jitter correction with camera element unit.
In addition, the present invention is not limited to above-mentioned each embodiment, in addition can the implementation phase in the scope that does not break away from purport of the present invention, implement various distortion.And, in above-mentioned each embodiment, include the invention in various stages, through with disclosed a plurality of inscape appropriate combination, can extract various inventions.
Zoom lens barrel of the present invention is to have the Zoom lens barrel of under non-photography state, keeping out of the way of keeping out of the way the camera lens frame; Wherein, Keep out of the way keeping out of the way mechanism and can not causing restriction with the configuration of image unit of camera lens frame to the configuration that picture frame advance and retreat drive the cam path of usefulness, can be used as also can miniaturization Zoom lens barrel.
Claims (2)
1. Zoom lens barrel, its have under non-photography state, keep out of the way keep out of the way the camera lens frame, it is characterized in that said Zoom lens barrel has:
Fixed frame;
The zoom drive source that zoom is used;
First frame with cam slot part, it is rotated driving by above-mentioned zoom drive source with respect to the said fixing frame at least;
Second frame with cam part, it is driven by above-mentioned first frame advance and retreat;
The 3rd frame, it is driven by above-mentioned first frame advance and retreat; And
The above-mentioned camera lens frame of keeping out of the way; It is the frame that is supported on rotationally on above-mentioned the 3rd frame, keeps keeping out of the way camera lens, when being in photography state; Be in the above-mentioned camera lens of keeping out of the way and be positioned at the in-position on the light path; From above-mentioned photography state during the change action of above-mentioned non-photography state, by the above-mentioned cam slot part of above-mentioned first frame and be located at the above-mentioned cam part rotating drive on above-mentioned second frame, kept out of the way being driven into the above-mentioned lens retreat of keeping out of the way to the outer retreating position of light path.
2. Zoom lens barrel according to claim 1 is characterized in that,
The above-mentioned camera lens frame of keeping out of the way is from the first half of above-mentioned photography state during the above-mentioned change action of above-mentioned non-photography state; Upwards stated retreating position direction rotating drive by the cam slot part of above-mentioned first frame; At latter half; Be arranged on the above-mentioned cam part rotating drive on above-mentioned second frame, make to be positioned at above-mentioned retreating position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-196917 | 2010-09-02 | ||
| JP2010196917A JP5592732B2 (en) | 2010-09-02 | 2010-09-02 | Zoom lens barrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102385134A true CN102385134A (en) | 2012-03-21 |
| CN102385134B CN102385134B (en) | 2014-05-21 |
Family
ID=45824712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110256637.3A Expired - Fee Related CN102385134B (en) | 2010-09-02 | 2011-09-01 | Zoom lens barrel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5592732B2 (en) |
| CN (1) | CN102385134B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107111094A (en) * | 2014-12-26 | 2017-08-29 | 富士胶片株式会社 | Lens barrel and its control method, camera main-body and its control method and camera and its control method |
| CN112433335A (en) * | 2020-11-30 | 2021-03-02 | 中山联合光电研究院有限公司 | Zoom lens |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6272047B2 (en) * | 2014-01-23 | 2018-01-31 | キヤノン株式会社 | Optical equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831577A (en) * | 2005-03-09 | 2006-09-13 | 株式会社理光 | Lens and lens tube, camera, portable information terminal and image input device |
| CN101644817A (en) * | 2008-08-08 | 2010-02-10 | 株式会社腾龙 | Inner focusing zoom lens and barrel thereof |
| JP2010085678A (en) * | 2008-09-30 | 2010-04-15 | Olympus Imaging Corp | Lens barrel |
| CN102053337A (en) * | 2009-11-05 | 2011-05-11 | 奥林巴斯映像株式会社 | Zoom lens barrel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4969863B2 (en) * | 2006-02-08 | 2012-07-04 | Ｈｏｙａ株式会社 | Lens barrel |
| JP2010026164A (en) * | 2008-07-17 | 2010-02-04 | Nikon Corp | Lens barrel, and optical equipment |
-
2010
- 2010-09-02 JP JP2010196917A patent/JP5592732B2/en not_active Expired - Fee Related
-
2011
- 2011-09-01 CN CN201110256637.3A patent/CN102385134B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1831577A (en) * | 2005-03-09 | 2006-09-13 | 株式会社理光 | Lens and lens tube, camera, portable information terminal and image input device |
| CN101644817A (en) * | 2008-08-08 | 2010-02-10 | 株式会社腾龙 | Inner focusing zoom lens and barrel thereof |
| JP2010085678A (en) * | 2008-09-30 | 2010-04-15 | Olympus Imaging Corp | Lens barrel |
| CN102053337A (en) * | 2009-11-05 | 2011-05-11 | 奥林巴斯映像株式会社 | Zoom lens barrel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107111094A (en) * | 2014-12-26 | 2017-08-29 | 富士胶片株式会社 | Lens barrel and its control method, camera main-body and its control method and camera and its control method |
| CN107111094B (en) * | 2014-12-26 | 2018-07-10 | 富士胶片株式会社 | Lens barrel and its control method, camera main-body and its control method and camera and its control method |
| CN112433335A (en) * | 2020-11-30 | 2021-03-02 | 中山联合光电研究院有限公司 | Zoom lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102385134B (en) | 2014-05-21 |
| JP2012053351A (en) | 2012-03-15 |
| JP5592732B2 (en) | 2014-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3771909B2 (en) | Retractable zoom lens barrel and method for retracting zoom lens barrel | |
| JP4520190B2 (en) | Retractable lens barrel and camera equipped with a retractable lens barrel | |
| US7623181B2 (en) | Panhead | |
| JP5788203B2 (en) | Lens barrel | |
| JP4959407B2 (en) | Lens driving device, zoom lens driving device, and camera | |
| KR20090098728A (en) | Imaging device | |
| US8134784B2 (en) | Lens apparatus capable of performing extension/retraction operation with respect to image pickup apparatus body and image pickup apparatus having the same | |
| JP5515322B2 (en) | Lens barrel and imaging device | |
| JP2008170650A (en) | Lens barrel | |
| JP4555607B2 (en) | Lens barrel feeding mechanism | |
| JP2011150132A (en) | Lens barrel | |
| CN102385134B (en) | Zoom lens barrel | |
| JP4455350B2 (en) | Imaging device | |
| JP4699126B2 (en) | Lens drive device | |
| CN104516169A (en) | Light quantity control apparatus, optical apparatus and image pickup apparatus | |
| JP2014085485A (en) | Lens barrel, and imaging device | |
| JP2017126013A (en) | Lens barrel and imaging apparatus | |
| JP5332125B2 (en) | Lens barrel and camera | |
| CN103676079A (en) | Lens barrel and digital camera having the same | |
| JP5966850B2 (en) | Lens barrel and imaging device | |
| US20230258913A1 (en) | Optical apparatus and image-capturing apparatus | |
| JP2011033847A (en) | Lens device and photographing apparatus | |
| JP2018142030A (en) | Lens barrel and imaging device | |
| JP5428385B2 (en) | Lens barrel and imaging device | |
| JP6485505B2 (en) | Lens barrel and imaging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151127 Address after: Tokyo, Japan, Japan Patentee after: Olympus Corporation Address before: Tokyo, Japan, Japan Patentee before: Olympus Imaging Corp. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20200901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |