CN104808304B - Lens barrel - Google Patents
Lens barrel Download PDFInfo
- Publication number
- CN104808304B CN104808304B CN201510031449.9A CN201510031449A CN104808304B CN 104808304 B CN104808304 B CN 104808304B CN 201510031449 A CN201510031449 A CN 201510031449A CN 104808304 B CN104808304 B CN 104808304B
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- China
- Prior art keywords
- frame
- mentioned
- lens barrel
- camera lens
- motorized motions
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- 230000033001 locomotion Effects 0.000 claims abstract description 42
- 230000003287 optical effect Effects 0.000 claims description 61
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 30
- 230000002093 peripheral effect Effects 0.000 description 15
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000003321 amplification Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
- Structure And Mechanism Of Cameras (AREA)
Abstract
The present invention provides lens barrel, and it can relax vibration for being produced due to motorized motions source (motor) for being arranged in mobile frame part etc. etc. and realize quietness.Lens barrel has：Motorized motions source (31,32)；1st frame (15), it is one of multiple frame parts of composition lens barrel (1)；2nd frame (14), it is provided with motorized motions source, is relatively moved relative to the 1st frame；Flexible printed board (20), it is arranged between motorized motions source and the 1st frame, makes to be electrically connected between motorized motions source and the 1st frame；And directing plate (30), it has fixed part (30a) and pressure contact portion (30b), be formed as beam-like and with spring, flexible printed board is guided in lens barrel, fixed part is fixed with a side in the 1st frame or the 2nd frame, pressure contact portion is abutted with the 2nd frame or the 1st frame.
Description
Technical field
The present invention relates to lens barrel, the lens barrel is made up of multiple frame parts, with motorized motions source and with the electricity
The flexible printed board of dynamic driving source connection, is configured to a part of frame part in multiple frame parts on the direction along optical axis
It is free to advance or retreat.
Background technology
In the past, in the middle lens barrel for using such as camera head, by making a part of frame part in multiple frame parts
The direction of the optical axis along image pickup optical system it is enterprising retire it is dynamic, carry out focus operation (focusing) and zoom action (zoom).
In this case, as the driving source for making frame part advance and retreat mobile, the motorized motions such as such as electro-motor source is normally applied, and
And it is practical.
In this lens barrel, for example, as the fixation in stationary state being fixedly installed in multiple frame parts
Electric base in frame part etc. be disposed relative to above-mentioned fixed frame part and retreat in the direction of the optical axis mobile movable frame
Electrical connection unit between motorized motions source or other electric components on part etc., for example, commonly use with flexible electricity
Gas substrate is flexible printed board etc..In this case, flexible printed board is formed as the tool on the moving direction of mobile frame part
There is surplus, be configured to turning back or be accommodated in regulation space in the state of bending, enable to absorb mobile frame part
Moving back and forth.
For example in the disclosed lens barrels such as Japanese Unexamined Patent Publication 9-145976 publications, by being provided for smaller
Suppress the tabular guide member of the deformation of the flexible printed board caused with the advance and retreat movement of mobile frame part in space, have
Imitate using the space in lens barrel and ensure the accommodation space of flexible printed board.
On the other hand, in existing lens barrel, motor as motorized motions source etc. is carried in mobile frame part.
In the existing lens barrel of this structure, when frame part is delivered to from the vibration of generations such as motorized motions source (motors),
May be produced between mobile frame part and fixed frame part and rocked, may interfere with mobile frame part and smoothly enter to retire
It is dynamic.Also, with the generation of vibration, it is also possible to produce abnormal sound, noise.
【Patent document 1】Japanese Unexamined Patent Publication 9-145976 publications
But, in the disclosed existing lens barrel such as above-mentioned Japanese Unexamined Patent Publication 9-145976 publications, for example, do not have
There is vibration for considering to cause due to motorized motions source (motor) etc. etc. to hinder the mobile possibility of the advance and retreat of mobile frame part.And
And, in the past, how not consider abnormal sound, noise for causing etc. due to vibration etc..
The content of the invention
The present invention is to complete in view of the foregoing, its object is to, there is provided following lens barrel：In lens barrel
In, suppress the generation of vibration for being produced due to motorized motions source (motor) for being arranged in mobile frame part etc. etc., Huo Zhehuan
With the vibration etc., it can be ensured that the smoothly advance and retreat of mobile frame part are moved and realize high-precision action, further, it is possible to suppress
Abnormal sound, noise of motion and sound etc. simultaneously realize quietness.
To achieve these goals, the lens barrel of a mode of the invention has：Motorized motions source；1st frame, it is
Constitute one of multiple frame parts of above-mentioned lens barrel；2nd frame, it is provided with above-mentioned motorized motions source, relative to above-mentioned 1st frame phase
To movement；Flexible printed board, it is arranged between above-mentioned motorized motions source and above-mentioned 1st frame, make above-mentioned motorized motions source with
Electrically connected between above-mentioned 1st frame；And directing plate, it has fixed part and pressure contact portion, is formed as beam-like and with spring,
The above-mentioned flexible printed board of guiding, is fixed with above-mentioned on the side in above-mentioned 1st frame or above-mentioned 2nd frame in above-mentioned lens barrel
Fixed part, makes above-mentioned pressure contact portion be abutted with above-mentioned 2nd frame or above-mentioned 1st frame.
In accordance with the invention it is possible to provide following lens barrel：In lens barrel, suppress due to being arranged on mobile frame portion
Motorized motions source (motor) on part etc. and the generation of vibration etc. that produces, or relax the vibration etc., it can be ensured that movable frame
The smoothly advance and retreat of part are moved and realize high-precision action, further, it is possible to it is simultaneously real to suppress the abnormal sound of motion and sound, noise etc.
Existing quietness.
Brief description of the drawings
Fig. 1 is the exploded perspective view for decomposing the lens barrel for showing an embodiment of the invention.
Fig. 2 be assemble an embodiment of the invention lens barrel after in the state of profilograph.
Fig. 3 be show assemble an embodiment of the invention lens barrel structural element in first half after
The partial cutaway perspective view of the situation of the state after the section and decomposition latter half of state.
Fig. 4 is to show assembling except 4 groups of camera lenses in the structural element of the lens barrel of an embodiment of the invention
With the partial cutaway perspective view (during contraction state) of the section of the state beyond the mounting ring of camera lens side.
Fig. 5 is to show assembling except 4 groups of camera lenses in the structural element of the lens barrel of an embodiment of the invention
With the partial cutaway perspective view (during use state) of the section of the state beyond the mounting ring of camera lens side.
Fig. 6 is the major part point for only taking out the base board unit shown in the lens barrel of an embodiment of the invention
Solution stereogram.
Fig. 7 is the major part amplification profile for amplifying a part (shown in label [the 7]) region for showing Fig. 2.
Fig. 8 is the major part amplification profile stereogram for amplifying a part (shown in label [the 8]) region for showing Fig. 3.
Label declaration
1：Lens barrel；11：Lead-frame；11a：Convex portion；11b：Straight trip groove；11c：Convex portion；12：1 group of frame holding frame；12a：
Jut；12b：Cam pin；13：Cam frame；13a：Inner circumferential cam path；13b：Periphery cam path；13c：Internal-gear；13d：It is convex
Portion；14：Movable frame；14a：Straight trip groove；14e：Space；15：Fixed frame；15d：Inner circumferential cam path；15e：Straight trip groove；16：Substrate
Unit；16a：Main substrate；16b：Flexible printed board；16c：Substrate frame；17：Camera lens side mounting ring；17a：Electric contact portion；20：
Flexible printed board；21：1 group of camera lens holding frame；21a：1 group of camera lens；22：2 groups of camera lens holding frames；22a：2 groups of camera lenses；22d：2G
Cam pin；23：3 groups of camera lens holding frames；23a：3 groups of camera lenses；24：4 groups of camera lens holding frames；24a：4 groups of camera lenses；25：Lead-frame is consolidated
Fixed board；25a：Cutting part；30：Directing plate；30a：Fixed part；30b：Pressure contact portion；30c：Extension；31：Zoom motor；32：
Focusing motor；33：Zoom ring；34：Focusing ring；35：Circular exterior member.
Specific embodiment
Below, by embodiment illustrated, the present invention will be described.An embodiment of the invention is exemplified with example
Such as it is applied to the lens barrel of digital camera or video camera camera head (hereinafter referred to as camera), lens barrel tool
There is drive mechanism, the drive mechanism keeps for example being made up of multiple optical lens groups etc. and being formed the camera optical system of shot object image
System, and a part of optical lens group in multiple optical lens groups of the composition image pickup optical system can be made along optical axis
Side move up.
Also, the optical axis of the photographic optical system in lens barrel in the present embodiment, is represented with label O.Along
On the direction of optical axis O, by with the subject of the preceding opposing surface of the camera (not shown) for being equipped with the lens barrel where
Side be referred to as front, the side where the installation portion of the lens barrel is referred to as rear.
In addition, in the following each accompanying drawing for illustrating and being used, if each structural element is the degree being capable of identify that on accompanying drawing
Size, so, different scale is shown according to each structural element sometimes.Therefore, in the present invention, described in these accompanying drawings
The relative position relation of the quantity of structural element, the shape of structural element, the ratio of the size of structural element and each structural element
It is not limited to the form of diagram.
Fig. 1 is the exploded perspective view for decomposing the lens barrel for showing an embodiment of the invention.Fig. 2 is to assemble this hair
Profilograph in the state of after a bright lens barrel for implementation method.Fig. 3 is to show an embodiment of the invention
Lens barrel structural element in first half assembling after state section and show latter half decompose after shape
The partial cutaway perspective view of state.
Fig. 4, Fig. 5 are to show assembling except 4 groups in the structural element of the lens barrel of an embodiment of the invention
The partial cutaway perspective view of the section of the state beyond camera lens and camera lens side mounting ring.Wherein, Fig. 4 shows to receive the lens barrel
The contraction state of the state of contracting, Fig. 5 shows the use state for extending the lens barrel.In addition, in Fig. 4, Fig. 5, show from
The appearance of the rear ramp observation of the lens barrel, omits mounting ring, 4 groups of mirrors of the latter half in the structure member of lens barrel
The diagram of head holding frame.Fig. 6 is that the major part for only taking out the base board unit shown in the lens barrel of present embodiment is decomposed
Stereogram.Fig. 7 is the major part amplification profile for amplifying a part (shown in label [the 7]) region for showing Fig. 2.Fig. 8 is
Amplification shows the major part amplification profile stereogram in a part (shown in label [8]) region of Fig. 3.
First, the schematic configuration of the lens barrel 1 of present embodiment is shown.The lens barrel 1 of present embodiment is application
In camera heads such as cameras and the Optical devices with photographic optical system.As illustrated, the lens barrel 1 is main by multiple
Toroidal or the structure member as frame part of barrel shape, i.e. 11,1 group of frame holding frame 12 of lead-frame, cam frame 13, movement
Frame 14 (the 2nd frame), fixed frame 15 (the 1st frame), base board unit 16,17,1 group of camera lens side mounting ring, 21,2 groups of camera lens holding frame camera lens
Holding frame 22 is (not shown in Fig. 1；2~Fig. 5 of reference picture etc.), 3 groups of camera lens holding frames, 23,4 groups of camera lens holding frames 24 etc. constitute.
Lead-frame 11 is straight trip 1 group of structure member of frame holding frame 12 of guiding.Lead-frame 11 is integrally formed into substantially annulus
Shape or substantially cylindrical shape.Lead-frame 11 has the convex portion 11a being provided projectingly towards rear in rear end edge.Convex portion 11a
Engage by with the lead-frame fixed plate 25 (aftermentioned) being fixed on movable frame 14, lead-frame 11 is turned into one with movable frame 14
Body.In addition, equally spaced forming multiple (being in this example 3 positions) convex portion 11a along the circumferencial direction of lead-frame 11.
Also, the outer peripheral face of 11a has to footpath direction convex portion 11c protruding outside, its side that can slide in convex portion
Formula engages with the straight trip groove 15d parallel with optical axis being arranged on the inner peripheral surface of aftermentioned fixed frame 15.Therefore, lead-frame 11 can
Relatively moved in the direction of the optical axis relative to fixed frame 15, will not be rotated against around optical axis.
Also, the multiple with the end upwardly extended in the side parallel with optical axis O is formed with the inner peripheral surface of lead-frame 11
Straight trip groove 11b.The plurality of straight trip groove 11b is formed in each position corresponding with above-mentioned each convex portion 11a.That is, along lead-frame 11
Inner circumferential circumferencial direction equally spaced forms multiple (being in this example 3 positions) straight trip groove 11b.1 group of projection of frame holding frame 12
The export-oriented convex portion (aftermentioned) of portion 12a is engaged in the way of sliding freely with straight trip groove 11b.Thus, lead-frame 11 and 1 is limited
Group frame holding frame 12 is rotated against around optical axis O, also, lead-frame 11 and 1 group of frame holding frame 12 can be relative on optical axis O directions
It is mobile.
1 group of frame holding frame 12 is to maintain 1 group of camera lens holding frame 21 for fixing aftermentioned 1 group of camera lens 21a and makes this 1 group
Camera lens holding frame 21 retires dynamic structure member the direction along optical axis O is enterprising.1 group of frame holding frame 12 is integrally formed into substantially
Toroidal or substantially cylindrical shape, interpolation are configured in lead-frame 11.Fixed 1 group of front end inner circumferential side of frame holding frame 12 and set
It is equipped with 1 group of camera lens holding frame 21.1 group of camera lens holding frame 21 is integrally formed the camera lens holding member for substantially toroidal.
Therefore, it is formed with opening in the substantial middle part of 1 group of toroidal of camera lens holding frame 21.In 1 group of camera lens holding frame 21
Fixation maintains 1 group of camera lens 21a in multiple optical lens of the image pickup optical system for constituting this lens barrel 1 in opening.
1 group of frame holding frame 12 is formed with the jut 12a being provided projectingly towards rear along optical axis O in rear end edge.Edge
1 group of circumferencial direction of frame holding frame 12 and equally spaced form multiple (being in this example 3 positions) jut 12a.Each
The export-oriented convex portion protruded towards footpath direction foreign side is formed with the outer peripheral face of jut 12a.As described above, jut 12a
Export-oriented convex portion is engaged in the way of sliding freely with the straight trip groove 11b of lead-frame 11.Thus, this 1 group is limited by lead-frame 11
Frame holding frame 12 rotates around optical axis O, and carries out straight trip guiding by 11 pairs of 1 group of frame holding frames 12 of lead-frame.
Also, in 1 group of each jut 12a of frame holding frame 12, it is being formed with the opposite of the position of above-mentioned export-oriented convex portion
The position of side, i.e. inner peripheral surface side are provided projectingly the cam pin 12b towards the inwardly projecting of footpath side.Cam pin 12b and cam
Periphery cam path 13b (aftermentioned) cam coupling of frame 13.Coupled by the cam, 1 group of frame holding frame 12 bears cam frame 13
Around optical axis O rotation and on along the direction of optical axis O it is free to advance or retreat.
Cam frame 13 be make 1 group of frame holding frame 12 and 2 groups of camera lens holding frames 22 the direction along optical axis O it is enterprising retire it is dynamic
Structure member.Cam frame 13 is integrally formed into substantially toroidal or substantially cylindrical shape, and interpolation is configured in 1 group of frame holding frame
On 12.Multiple (such as three) cam path 13b in periphery with the end is formed with the outer peripheral face of cam frame 13.As described above, 1 group
The cam pin 12b of frame holding frame 12 is coupled with the periphery cam path 13b cams.Thus, cam frame 13 rotates by around optical axis O,
Make 1 group of frame holding frame 12 optical axis O directions it is enterprising retire it is dynamic.
Also, multiple (such as three) inner circumferential cam path 13a with the end is formed with the inner peripheral surface of cam frame 13.2 groups
The 2G cam pins 22d of camera lens holding frame 22 is coupled with the inner circumferential cam path 13a cams.Here, as described later, 2 groups of camera lenses keep
Frame 22 is disposed in the inner side of movable frame 14.2 groups of straight trip groove 14a of the 2G cam pin 22d insertions movable frame 14 of camera lens holding frame 22
And be provided projectingly towards foreign side, coupled with the inner circumferential cam path 13a cams of above-mentioned cam frame 13.Thus, cam frame 13 makes 2 groups of mirrors
Head holding frame 22 optical axis O directions it is enterprising retire it is dynamic.
And, on the rear end edge inner peripheral surface of cam frame 13, internal tooth is circumferentially formed with prescribed limit
Gear 13c.Drive the gear (not shown) of force transfer mechanism to be engaged with internal-gear 13c, aftermentioned electronic drive is come to transmit
The driving force of the zoom motor 31 in one of dynamic source.Thus, when zoom motor 31 is driven, the driving force is via above-mentioned driving force
Transmission mechanism is delivered to internal-gear 13c, and cam frame 13 rotates around optical axis O.
And then, the multiple convex portions protruded towards footpath direction foreign side are formed with the rear end edge outer peripheral face of cam frame 13
13d.Convex portion 13d engages with the aftermentioned inner circumferential cam path 15d of fixed frame 15.Thus, when cam frame 13 rotates, the cam frame
13 convex portion 13d is moved along the inner circumferential cam path 15d of fixed frame 15.Therefore, now, cam frame 13 relative to fixed frame 15 around
Optical axis O rotate and the direction along optical axis O it is enterprising retire it is dynamic.In addition, along the circumferencial direction landform at equal intervals of cam frame 13
Into multiple (being in this example 3 positions) convex portion 13d.
Movable frame 14 is integrally formed into substantially toroidal or substantially cylindrical shape, and interpolation is configured on cam frame 13.
The inside of movable frame 14 is fixedly installed as the zoom motor 31 and focusing motor (not shown) in motorized motions source.In movable frame
It is formed with 14 side face in the straight trip groove 14a upwardly extended along the side of optical axis O.Between moving along circumferencial direction of frame 14 etc.
Multiple (being in this example 3 positions) straight trip groove 14a is formed every ground.In addition, straight trip groove 14a is formed completely through movable frame 14
Side face.As described above, 2 groups of 2G cam pins 22d of camera lens holding frame 22 are engaged in the way of sliding freely with each straight trip groove 14a.
In the rear end edge of movable frame 14, for example, it is fixedly installed by fixed cells such as screws and is formed as circular plate shape
Lead-frame fixed plate 25.Cutting for multiple (being in this example 3 positions) is formed with the periphery edge of the lead-frame fixed plate 25
Oral area position 25a (holding section).As described above, each convex portion 11a of lead-frame 11 engages with each cutting part 25a.Thus, it is fixed with
The movable frame 14 and lead-frame 11 of lead-frame fixed plate 25 are integrally formed.
As described above, 1 group of frame holding frame 12 is limited with rotating and is inserted in mode free to advance or retreat in the direction of the optical axis
The inner circumferential side of lead-frame 11.Cam frame 13 in the way of rotating freely in be inserted in 1 group of inner circumferential side of frame holding frame 12.Here, it is convex
The wheel cam between 1 group of frame holding frame 12 of frame 13 is coupled.Thus, when cam frame 13 rotates, 1 group of frame holding frame 12 is in optical axis
Direction is enterprising retire it is dynamic.The inner circumferential side of cam frame 13 is inserted in movable frame 14.Here, movable frame 14 and lead-frame 11 turn into one
Body.Thus, movable frame 14 is rotated and free to advance or retreat in the direction of the optical axis together with lead-frame 11 by limitation.And, cam frame 13
Rotated freely relative to movable frame 14.
So assemble lead-frame 11,1 group of frame holding frame 12, cam frame 13, movable frame 14.Fixed frame 15 is inserted in the unit
On.
Fixed frame 15 is integrally formed the structure member for substantially toroidal or substantially cylindrical shape.In fixed frame 15
Rear end edge, for example, be fixedly installed camera lens side mounting ring 17 by fixed cells such as screws.The camera lens side mounting ring 17 be as
Under connection structure member：For be arranged on the preceding surface using the camera body (not shown) of the lens barrel 1
Camera side installation position engaging (not shown), so as to the lens barrel 1 is assembled on camera body (not shown).This
Sample, when the lens barrel 1 is assembled into the state on camera body, fixed frame 15 is fixed relative to camera body.
Multiple inner circumferential cam path 15d are formed with the inner peripheral surface of fixed frame 15.As described above, each convex portion of cam frame 13
13d engages with each inner circumferential cam path 15d.Thus, when cam frame 13 rotates relative to fixed frame 15, cam frame 13 rotate and
Retreated on optical axis O directions.
Also, the predetermined portion of the rear end face in fixed frame 15, such as be fixedly installed by fixed cells such as screws and drawn
The fixed part 30a of guide plate 30.The directing plate 30 is the flexible printing in order to suppress to be arranged between fixed frame 15 and movable frame 14
Tampering and setting for substrate 20, is to maintain the guide member of the receiving state of the flexible printed board 20.The directing plate 30
Detailed construction is described below.
In addition, (being illustrated in middle omission the such as Fig. 1, Fig. 3) as shown in Figure 2, the functional units that multiple is formed as circular become
Burnt ring 33 and focusing ring 34 are disposed on the outer peripheral face of above-mentioned fixed frame 15 in a rotatable manner.Also, in fixed frame 15
Outer peripheral face on the position near rear end be fixedly installed the circular exterior member 35 of decorative appearance.
Base board unit 16 is by being integrally formed into the substrate frame 16c of substantially toroidal, being disposed in the periphery of substrate frame 16c
The electric base of side, the main substrate 16a for for example being formed by hard substrate, the flexible printed board 16b formed by flexible base plate etc.
Constitute.Here, main substrate 16a, flexible printed board 16b are formed as the circular shape with the periphery along substrate frame 16c
Circular arc, is provided with various electric components and electric contact portion etc. in its plate face.As shown in fig. 6, these main substrates 16a, flexible print
Brush substrate 16b is from chimeric with the outer peripheral face of substrate frame 16c with the direction that optical axis O is orthogonal.Therefore, in the outer peripheral face of substrate frame 16c
On be formed with the circumference that there is depth on the direction of footpath, there is the slightly larger width of thickness than main substrate 16a in the direction of the optical axis
The chimeric configuration of groove 16d, above-mentioned main substrate 16a, flexible printed board 16b is in the circumferential groove.
So, the aforesaid substrate list of the state of main substrate 16a, flexible printed board 16b etc. is installed on substrate frame 16c
Unit 16 is for example fixedly installed in camera lens side mounting ring 17 by fixed cells such as screws.Thus, main substrate 16a, flexible printing
Substrate 16b will not come off on the direction of footpath, securely maintain assembled state.In addition, in order to suppress main substrate 16a, flexible print
Brush substrate 16b's etc. comes off, and then, it is possible to use bonding agent etc. ensures stationary state.
Camera lens side mounting ring 17 is integrally formed for substantially toroidal, for lens barrel 1 to be fastened on into photograph
Connection structure member on owner's body (not shown).As described above, the camera lens side mounting ring 17 is fixedly installed on fixed frame 15
Rearward end.In camera lens side, the predetermined portion of the rear end surface side of mounting ring 17 is equipped with multiple electricity being made up of metal coupon etc. and touches
Point portion 17a.The plurality of electric contact portion 17a is electrically connected with the contact on above-mentioned flexible printed board 16b.On the other hand,
Above-mentioned multiple electric contact portion 17a play following effect：It is assemblied in via above-mentioned camera lens side mounting ring 17 as this lens barrel 1
During state on camera body, the electric contact portion with the camera body side for being disposed in camera side installation position (not shown)
Contact (not shown), it is ensured that the electrical connection between above-mentioned lens barrel 1 and camera body (not shown).
And then, 4 groups of camera lens holding frames 24 are for example by the fixed cells such as screw from the rear end of above-mentioned camera lens side mounting ring 17
Side is fixedly installed in above-mentioned camera lens side mounting ring 17.
Image pickup optical system in the lens barrel 1 of present embodiment by multiple optical lens, i.e. 1 group camera lens 21a, 2 groups
Camera lens 22a, 3 groups of camera lens 23a, 4 groups of camera lens 24a are constituted.These optical lens groups from the front of the lens barrel 1 successively along
Optical axis O is configured.Each optical lens group is respectively by 1 group of 21,2 groups of camera lens holding frame, 22,3 groups of camera lens holding frame camera lens holding frame 23,4
Group camera lens holding frame 24 keeps.
Wherein, as described above, keeping 1 group of the 1 of camera lens 21a group of camera lens holding frame 21 to be kept by 1 group of frame holding frame 12.Cause
This, 1 group of camera lens 21a (1 group of camera lens holding frame 21) bears the rotation of cam frame 13 and along light together with 1 group of frame holding frame 12
The direction of axle O is enterprising retire it is dynamic.
As described above, keeping 2 groups of the 2 of camera lens 22a groups of camera lens holding frames 22 to be disposed in the inside of movable frame 14.Here, from 2
The straight trip groove 14a of the 2G cam pin 22d insertions movable frame 14 that the periphery of group camera lens holding frame 22 is provided projectingly towards foreign side, and with
The inner circumferential cam path 13a cams coupling of cam frame 13.Thus, 2 groups of rotations of camera lens holding frame 22 are limited by movable frame 14, and
And keep 2 groups of camera lens holding frames 22 to be moved freely in enterprising the retiring in optical axis O directions by cam frame 13.Therefore, 2 groups of camera lens 22a (2
Group camera lens holding frame 22) according to the rotation of cam frame 13 the direction along optical axis O it is enterprising retire it is dynamic.In addition, in this implementation
In the lens barrel 1 of mode, 1 group of camera lens 21a, 2 groups of camera lens 22a are lens group (the zoom mirrors for constituting varifocal optical system
Head), by bear by zoom motor 31 carry out rotation driving cam frame 13 driving force and on optical axis O directions retreat, make
The focal length zoom of the image pickup optical system.
Keep that 3 groups of the 3 of camera lens 23a groups of camera lens holding frames 23 are same with above-mentioned 2 groups of camera lens holding frames 22 to be disposed in movable frame
14 inside.Here, 3 groups of camera lens holding frames 23 are configured at the rear of above-mentioned 2 groups of camera lens holding frames 22, by not on optical axis O
The focal adjustment mechanism of diagram and it is free to advance or retreat on optical axis O directions.That is, in the lens barrel 1 of present embodiment, 3 groups of mirrors
Head 23a is the lens group (focusing camera lens) for constituting focusing optics.
As described above, keeping 4 groups of the 4 of camera lens 24a groups of camera lens holding frames 24 to remain fixed in camera lens side mounting ring 17.Cause
This, 4 groups of camera lens 24a (4 groups of camera lens holding frames 24) are integratedly to be fixedly installed on fixed frame 15 via camera lens side mounting ring 17
On fixed lens group.
As described above, in the lens barrel 1 of present embodiment, being fixedly installed as electronic in the inside of movable frame 14
The electrical structure part of zoom motor 31, the focusing motor 32 (reference picture 2, Fig. 3 etc.) of driving source etc..In order to these electrical parts
The supply electric powers such as part simultaneously ensure transmission of control signal etc. etc. and electrical connection, such as application flexibility print in this lens barrel 1
Brush substrate 20 etc..
As shown in Fig. 2 etc., one end of the flexible printed board 20 is connected with main substrate 16a, extends from main substrate 16a,
Its another side via the space 14e being for example formed in inside movable frame 14 be disposed in inside the movable frame 14 it is each electrically
Part is connected.That is, above-mentioned flexible printed board 20 is to make the main substrate 16a being fixedly installed on fixed frame 15 and be disposed in movement
The structure electrically connected between electric component inside frame 14, particularly motorized motions source (zoom motor 31 or focusing motor 32) etc.
Part.In addition, in Fig. 3, Fig. 8, in order to illustrate, a cut-out part shows flexible printed board 20.
In this case, movable frame 14 is moved relative to fixed frame 15.Therefore, flexible printed board 20 needs upper as combining
State the movement of movable frame 14 and there is length more than needed.Therefore, above-mentioned space 14e is set on movable frame 14, in space 14e
The metamorphosis of flexible printed board 20 that causes with movement of absorbed inside.Also, moved as suppression
Flexible printed board 20 tamper and guide to enable the flexible printed board 20 all the time in regulation space 14e
The guide member of interior movement, is provided with directing plate 30 between fixed frame 15 and movable frame 14.
Above-mentioned directing plate 30 turns into the shape that warpage processing is carried out to the thin metallic plate shape part with elastic (spring)
State.Directing plate 30 is by the fixed part 30a of a side, the pressure contact portion 30b of another side and fixation portions 30a and above-mentioned pressure
Extension 30c between socket part 30b is formed.And, in the present embodiment, directing plate 30 is formed as fixation portions 30a quilts
Fixed, above-mentioned pressure contact portion 30b turns into the cantilever beam-like of free end.
Specifically, the fixed part 30a of one end of above-mentioned directing plate 30 is fixed on fixed frame using fixed cells such as screws
The fixed position of 15 rear end face.Fixed part 30a is the area for upwardly extending predetermined distance and being formed in the footpath side of fixed frame 15
Domain.In the degree of angle warpage substantially 90 from the end of fixation portions 30a along the square upwardly toward the camera lens mirror of optical axis O
The extension 30c parallel with optical axis is formed with the region that the front of cylinder 1 extends.And, it is another in the front of extension 30c
One end part is formed with pressure contact portion 30b.The section of pressure contact portion 30b has circular shape, is formed towards outer circumferential side protrusion.On
Extension 30c and pressure contact portion 30b configurations are stated in the inside of the above-mentioned space 14e of movable frame 14.And, above-mentioned pressure contact portion 30b with
The internal face of above-mentioned space 14e is abutted.As described above, directing plate 30 has elastic (spring), for example formed as cantilever beam-like.
Therefore, it is formed in above-mentioned space 14e of the above-mentioned pressure contact portion 30b of the other end of directing plate 30 with movable frame 14 on the direction of footpath
Wall (inner peripheral surface) abut.Thus, inner circumferential of the directing plate 30 towards the cam frame 13 of the outer circumferential side for being mounted in the movable frame 14 outward
Face presses movable frame 14.As above-mentioned directing plate 30, such as lamellar part (such as thickness of slab t=for being made using stainless steel (SUS)
0.2mm or so).
In addition, the form on directing plate 30, in the present embodiment, it is assumed that be formed as cantilever beam-like, but be not limited to
The example.Also, directing plate 30 is configured to be fixed with fixed part 30a on fixed frame 15 (the 1st frame) and make pressure contact portion 30b and movement
Frame 14 (the 2nd frame) is abutted, but is not limited to the example.For example, it is also possible to be configured to be fixed with fixation on movable frame 14 (the 2nd frame)
Portion 30a simultaneously makes pressure contact portion 30b be abutted with fixed frame 15 (the 1st frame).
Below, the effect to the lens barrel 1 of such present embodiment for constituting is briefly described.It is set to this camera lens mirror
Cylinder 1 is assemblied in the regulation on the preceding surface using the camera body (not shown) of this lens barrel 1 via camera lens side mounting ring 17
The state at position (camera side installation position (not shown)).Now, lens barrel 1 and camera body it is (not shown) turn into
The state of installation position electrical connection.
So, the state that the lens barrel 1 in present embodiment and the camera body using the lens barrel 1 are connected
Under, when the power supply status of camera body turn into off-state, such as shown in figure 4, lens barrel 1 exists as each frame part
Overlapped and the state of overall shrinkage, i.e. so-called contraction state on the direction of footpath.Under the state, such as when to camera body side
When functional unit (not shown) is operated and is turned on power supply status, camera body side be arranged on inside
Control unit (not shown) cooperates with the camera lens side control unit being for example arranged on above-mentioned main substrate 16a of the side of lens barrel 1, to making
For the zoom motor 31 in motorized motions source is driven control.Thus, when 31 rotation driving of zoom motor, its driving force via
Above-mentioned driving force transfer mechanism (not shown) is delivered to the internal-gear 13c of cam frame 13, cam frame 13 is rotated around optical axis O.
Then, cam frame 13 rotates relative to fixed frame 15 and is stretched out upwardly toward front in the side along optical axis O.At the same time, it is convex
Wheel frame 13 via inner circumferential cam path 13a and 2G cam pin 22d make 2 groups of camera lens holding frames 22 along optical axis O side upwardly toward
Prescribed direction is retreated and is moved.Also, meanwhile, cam frame 13 makes 1 group of frame holding frame via periphery cam path 13b and cam pin 12b
12 stretch out in the side along optical axis O upwardly toward front.Also, now, movable frame 14 and lead-frame 11 are integratedly towards front
Stretch out.
In this case, directing plate 30 is arranged between fixed frame 15 and movable frame 14, suppress the main base from base board unit 16
Plate 16a tampering and it guided towards the extended flexible printed board 20 in the inside of movable frame 14.At the same time, draw
Guide plate 30 presses movable frame 14 by the elasticity of itself towards outer circumferential side all the time.According to the structure, relax due to being fixedly installed
The driving in the motorized motions source (zoom motor 31, focusing motor 32 etc.) inside movable frame 14 and the vibration that produces are from movable frame
14 are delivered to other structures part.Also, further suppress abnormal sound, noise produced due to the vibration etc..
As described above, according to said one implementation method, it is being configured to carry electronic drive on movable frame 14
In the lens barrel 1 of dynamic source (zoom motor 31, focusing motor 32), directing plate is constituted by the part with elastic (spring)
30, the directing plate 30 is to suppress to be disposed in the flexible print between fixed part (fixed frame 15) and moving parts (movable frame 14)
Brush substrate 20 tampers with moving for movable frame 14 and it is guided and is set.And, it is configured to the directing plate
The fixed part 30a of 30 one end is fixed on fixed frame 15, on the other hand, the pressure contact portion 30b of the other end is pressed into movable frame
On 14.
By use this structure, can relax due to be equipped on movable frame 14 motorized motions source (zoom motor 31,
Focusing motor 32) driving and the vibration that produces, the vibration can be suppressed and be delivered to other structures part.Also, can also press down
Abnormal sound, noise that system is produced due to the driving etc..
In addition, the lens barrel of a mode of the invention can show as having：Motorized motions source；1st frame, it is structure
One of multiple frame parts into above-mentioned lens barrel；2nd frame, it is provided with above-mentioned motorized motions source, relative relative to above-mentioned 1st frame
It is mobile；Flexible printed board, it is arranged between above-mentioned motorized motions source and above-mentioned 1st frame, make above-mentioned motorized motions source with it is upper
State electrical connection between the 1st frame；And directing plate, it has fixed part and pressure contact portion, is formed as beam-like and with spring, upper
The above-mentioned flexible printed board of guiding in lens barrel is stated, is fixed with the side in above-mentioned 1st frame or above-mentioned 2nd frame above-mentioned solid
Determine portion, above-mentioned pressure contact portion is abutted with above-mentioned 2nd frame or above-mentioned 1st frame.
In addition, in said one implementation method, as applying lens barrel of the invention, exemplified be configured to relative to
The lens barrel of camera body disassembly ease, but it is not limited to the form.For example, in camera body and lens barrel integrally
In the camera of composition, it is also possible to similarly apply structure of the invention completely.
The invention is not restricted to above-mentioned implementation method, various modifications can be within a range not departing from the gist of the invention implemented certainly
And application.And then, in the above-described embodiment comprising the invention in various stages, by the appropriate of disclosed multiple structure important documents
Combination, can extract various inventions.If even if for example, being deleted from the entire infrastructure important document shown in said one implementation method
In the case that a dry structure important document also can solve the problem that the invention problem to be solved and obtain invention effect, the structure important document is deleted
Structure can be used as inventing extracting.
Industrial applicability
The invention be not limitedly applied to digital camera etc. and have individual electronic equipment i.e. shooting on shoot function to set
The lens barrel of standby (camera), additionally it is possible to be widely used in the electronic equipment, for example just of other forms with shoot function
Take phone, smart mobile phone, sound pick-up outfit, electronic notebook, personal computer, tablet terminal equipment, game station, portable electricity
Set depending on, clock and watch, using the various electronics with shoot function such as navigation equipment of GPS (Global Positioning System)
It is standby.
And then, being equally applicable to be applied to has obtain image using photographing element and include the acquirement image
The lens barrel of the observation equipment such as the electronic equipment of the function in display device, such as telescope, binoculus, microscope.
Claims (4)
1. a kind of lens barrel, it is characterised in that the lens barrel has：
Motorized motions source；
1st frame, it is one of the multiple frame parts for constituting above-mentioned lens barrel；
2nd frame, it is provided with above-mentioned motorized motions source, is relatively moved relative to above-mentioned 1st frame；
Flexible printed board, it is arranged between above-mentioned motorized motions source and above-mentioned 1st frame, make above-mentioned motorized motions source with it is above-mentioned
Electrically connected between 1st frame；And
Directing plate, it has fixed part and pressure contact portion, is formed as beam-like and with spring, in guiding in above-mentioned lens barrel
State flexible printed board, be fixed with fixation portions on the side in above-mentioned 1st frame and above-mentioned 2nd frame, above-mentioned pressure contact portion with
The opposing party in above-mentioned 1st frame and above-mentioned 2nd frame abuts.
2. lens barrel according to claim 1, it is characterised in that
Above-mentioned directing plate extends and is arranged to cantilever beam-like in the direction of the optical axis.
3. lens barrel according to claim 1 and 2, it is characterised in that
Above-mentioned motorized motions source is the motor for driving focusing camera lens.
4. lens barrel according to claim 1 and 2, it is characterised in that
Above-mentioned motorized motions source is the motor for driving zoom camera lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-011745 | 2014-01-24 | ||
| JP2014011745A JP6284374B2 (en) | 2014-01-24 | 2014-01-24 | Lens barrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104808304A CN104808304A (en) | 2015-07-29 |
| CN104808304B true CN104808304B (en) | 2017-06-09 |
Family
ID=53693280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510031449.9A Expired - Fee Related CN104808304B (en) | 2014-01-24 | 2015-01-22 | Lens barrel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6284374B2 (en) |
| CN (1) | CN104808304B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6750844B2 (en) * | 2016-02-19 | 2020-09-02 | キヤノン株式会社 | Lens barrel and imaging device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333024A (en) * | 1993-03-01 | 1994-07-26 | Eastman Kodak Company | Optical apparatus for changing focus and focal length |
| CN101363951A (en) * | 2007-08-08 | 2009-02-11 | 佳能株式会社 | Lens barrel and image pickup device therefor |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2587879B2 (en) * | 1990-12-21 | 1997-03-05 | 富士写真フイルム株式会社 | Camera lens equipment |
| JPH05134161A (en) * | 1991-11-08 | 1993-05-28 | Canon Inc | Lens-barrel |
| JPH10170796A (en) * | 1996-12-11 | 1998-06-26 | Nikon Corp | Lens barrel |
| JP2003307667A (en) * | 2002-04-17 | 2003-10-31 | Canon Inc | Lens barrel |
| JP2005107008A (en) * | 2003-09-29 | 2005-04-21 | Sony Corp | Lens barrel and imaging device |
| JP2007316232A (en) * | 2006-05-24 | 2007-12-06 | Fujifilm Corp | Lens barrel and imaging apparatus |
| JP4933420B2 (en) * | 2007-12-28 | 2012-05-16 | 日本電産コパル株式会社 | Lens barrel |
| JP2010096859A (en) * | 2008-10-14 | 2010-04-30 | Nidec Sankyo Corp | Optical unit with shake correcting function |
| JP2011186073A (en) * | 2010-03-05 | 2011-09-22 | Tdk Corp | Lens drive device |
| KR20120133649A (en) * | 2011-05-31 | 2012-12-11 | 삼성전자주식회사 | Rens barrel assembly |
-
2014
- 2014-01-24 JP JP2014011745A patent/JP6284374B2/en active Active
-
2015
- 2015-01-22 CN CN201510031449.9A patent/CN104808304B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5333024A (en) * | 1993-03-01 | 1994-07-26 | Eastman Kodak Company | Optical apparatus for changing focus and focal length |
| CN101363951A (en) * | 2007-08-08 | 2009-02-11 | 佳能株式会社 | Lens barrel and image pickup device therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6284374B2 (en) | 2018-02-28 |
| CN104808304A (en) | 2015-07-29 |
| JP2015138260A (en) | 2015-07-30 |
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