CN103135194A - Focusing mechanism and shooting device thereof - Google Patents
Focusing mechanism and shooting device thereof Download PDFInfo
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- CN103135194A CN103135194A CN2011103779926A CN201110377992A CN103135194A CN 103135194 A CN103135194 A CN 103135194A CN 2011103779926 A CN2011103779926 A CN 2011103779926A CN 201110377992 A CN201110377992 A CN 201110377992A CN 103135194 A CN103135194 A CN 103135194A
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Abstract
The invention provides a focusing mechanism and a shooting mechanism thereof. The focusing mechanism comprises a driving tube and a pair of focusing lens cones, wherein the driving tube is of a hollow tube-shaped structure, and the opening portion at one end of the hollow tube-shaped structure protrudes toward an axis to be provided with at least three guiding protruding points; the focusing lens cones are of hollow tube-shaped structures and arranged in the driving tube, the at least three guiding protruding points correspond to the outer edge of the peripheral wall of the focusing lens cones, at least three tube grooves are arranged on the outer edge of the peripheral wall of the focusing lens cones, the at least three guiding protruding points are respectively embedded into the at least three tube grooves, and when the driving tube rotates, the at least three tube grooves of the focusing lens cones are dragged by the at least three guiding protruding points to enable the focusing lens cones to axially move in the driving tube. The focusing mechanism and the shooting mechanism have the advantages of improving the structure strength, improving the stability of the focusing mechanism in axial motion, enabling the at least three guiding protruding points to be on the same plane and accordingly solving the problem of inclination of the focusing mechanism.
Description
Technical field
The present invention relates to a kind of Focusing mechanism, espespecially a kind ofly improve structural strength and stability, and avoid Focusing mechanism and the camera head thereof of tilt problem.
Background technology
Along with the arriving of digital age, the mode that the mankind record life changes thereupon, and under the continuous progress of science and technology, digital camera has become the indispensable 3C Product of one of staff almost.Such as be engaged in tourism, exhibition or diet party etc. when movable, none does not record each constantly fine with digital camera.At present, camera on the market all has the function of focusing, and with present most camera, the focusing mode of its camera is to utilize the mode of two columns to reach the function of focusing mostly, one of described two columns are in order to the degree of freedom of fixing focusing mirror group on optical axis, can along optical axis adjustment focusing mirror group away from or near the image sensing assembly; And another column is in order to adjust angle centered by optical axis to complete focusing.
But, focusing mirror group usually the mode by a cantilever to be fixed on described two columns and to be arranged at the inside of camera head, therefore it is completed when assembling usually.But pass through the mode of a cantilever when assembling, the angular setting of the imaging surface of focusing mirror group and optical axis or image sensing assembly is comparatively difficult, therefore usually need higher assembling precision and technology; And if assembling complete after in when check, when existing its focusing accuracy that starts is not good, also need make or have much ado with after the camera head decomposition, the adjustment that can focus.Moreover, because it only uses a cantilever as the fixed support point, if when the user uses, accidentally drop or collide camera head, may make former focusing accuracy rate of dispatching from the factory after proofreading and correct abnormal because of cantilever deflection or displacement.Said circumstances day by day requires production hour and production cost and user day by day to require to focus for today of accuracy rate for the producer, and the Focusing mechanism of prior art is a large obstacle of camera head undoubtedly.
Take a broad view of front describedly, the present inventor thinks and designs a kind of Focusing mechanism and camera head thereof, improved with the disappearance for prior art, and then the enforcement utilization on the enhancement industry.
Summary of the invention
Purpose of the present invention is to provide a kind of and improves structural strength and stability, and avoids Focusing mechanism and the camera head thereof of tilt problem.
For achieving the above object, the present invention is by the following technical solutions:
A kind of Focusing mechanism comprises:
One drives cylinder, is the hollow tube-shape structure, and the opening part of one end protrudes out to the axle center and is provided with at least three guiding salient points; And
One focusing lens barrel, be the hollow tube-shape structure, it is arranged at and drives in cylinder, at least three guiding salient points of the perisporium outer rim correspondence of focusing lens barrel have at least three cylinder ditches, and at least three guiding salient points embed respectively at least three cylinder ditches, when driving the cylinder rotation, at least three cylinder ditches of focusing lens barrel are subjected to the traction of at least three guiding salient points, and make the axially displacement in driving cylinder of focusing lens barrel.
Wherein, described at least three guiding salient points are linked to be an imaginary line with the described center of circle that drives cylinder respectively, and the angle between each imaginary line is greater than 30 degree.
Wherein, the distance of the opening in described at least three guiding salient points and described drive tin is identical.
Wherein, described Focusing mechanism also comprises a driver module, and the described outer peripheral edges that drive cylinder have a drive division, and driver module is embedded in the drive division that drives cylinder.
Wherein, when described driver module drove described drivings cylinder and is rotated displacement, at least three guiding salient points that utilize described at least three cylinder ditches of described focusing lens barrel to be driven cylinder drew, and then drive the lens barrel axial displacement of focusing, to focus.
A kind of camera head comprises:
One image sensing assembly is to be arranged at camera head inside; And
One Focusing mechanism, it comprises:
One drives cylinder, is the hollow tube-shape structure, and the opening part of one end protrudes out to the axle center and is provided with at least three guiding salient points; And
One focusing lens barrel, be the hollow tube-shape structure, it is arranged at and drives in cylinder, at least three guiding salient points of the perisporium outer rim correspondence of focusing lens barrel have at least three cylinder ditches, and at least three guiding salient points embed respectively at least three cylinder ditches, and when driving the cylinder rotation, at least three cylinder ditches of focusing lens barrel are subjected to the traction of at least three guiding salient points, and make the axially displacement in driving cylinder of focusing lens barrel, to focus in image sensing assembly and imaging.
Wherein, described at least three guiding salient points are linked to be an imaginary line with the described center of circle that drives cylinder respectively, and the angle between each imaginary line is greater than 30 degree.
Wherein, described at least three guiding salient points are identical with the distance of described image sensing assembly on optical axis.
Wherein, described camera head also comprises a driver module, and the described outer peripheral edges that drive cylinder have a drive division, and driver module is embedded in the drive division that drives cylinder.
Wherein, when the described driving cylinder of described driver module driving is rotated displacement, utilize described at least three cylinder ditches of described focusing lens barrel to be driven the tractions of described at least three guiding salient points of cylinder, and then drive the focusing lens barrel and carry out relative displacement along optical axis and described image sensing assembly, to focus.
Beneficial effect of the present invention is: this Focusing mechanism and camera head thereof can drive at least three guiding salient points of cylinder and embed at least three cylinder ditches of focusing lens barrel by use, improve the structural strength of Focusing mechanism, and the stability when improving Focusing mechanism and moving axially; And make at least three guiding salient points in the same plane, can improve by this tilt problem of Focusing mechanism.
Description of drawings
Fig. 1 is the explosive view of the first embodiment of Focusing mechanism of the present invention;
Fig. 2 is the combination schematic diagram of the first embodiment of the camera lens of Focusing mechanism of the present invention;
Fig. 3 is the guiding salient point schematic diagram of Focusing mechanism of the present invention;
Fig. 4 is the first schematic diagram of the second embodiment of Focusing mechanism of the present invention;
Fig. 5 is the second schematic diagram of the second embodiment of Focusing mechanism of the present invention;
Fig. 6 is the schematic diagram of the camera head of Focusing mechanism of the present invention.
[main element label declaration]
1: Focusing mechanism
10: drive cylinder
101: opening
102: the guiding salient point
1021: imaginary line
103: the outer peripheral edges that drive cylinder
104: drive division
11: the focusing lens barrel
111: the perisporium outer rim of focusing lens barrel
112: the cylinder ditch
12: driver module
2: camera head
20: the image sensing assembly
21: control module
22: display module
23: control knob
θ: the angle between imaginary line
Embodiment
Be the effect that makes the auditor understand better technical characterictic of the present invention, content and advantage and can reach, hereby the present invention is coordinated accompanying drawing, and be described in detail as follows with the expression-form of embodiment, and the accompanying drawing that wherein uses, its purport is only the use of signal and aid illustration book, may not be the true ratio after the invention process and precisely configuration, therefore should not understand, limit the invention to the interest field in actual enforcement with regard to ratio and the configuration relation of accompanying drawing, chat in advance bright.
Focusing mechanism of the present invention, mainly that at least three guiding salient points driving cylinder embed in three cylinder ditches of focusing lens barrels to improve structural strength and the tilt problem of existing skill at least, it is applicable to camera heads such as digital camera (Digital Camera), camera cell phone (Camera Phone), intelligent camera cell phone (Smartphone), class S.L.R or digital code cameras (Digital Video Camera), but actual exercisable category is still not only limited with this.
See also Fig. 1 and Fig. 2, Fig. 1 is the explosive view for the first embodiment of Focusing mechanism of the present invention; Fig. 2 is the combination schematic diagram of the first embodiment of Focusing mechanism of the present invention.As shown in the figure, Focusing mechanism 1 comprises: one drives cylinder 10 and one focusing lens barrel 11.Driving cylinder 10 is the hollow tube-shape structure.Opening 101 places that drive an end of cylinder 10 protrude out to the axle center and are provided with at least three guiding salient points 102.Focusing lens barrel 11 is the hollow tube-shape structure, and it is arranged at and drives in cylinder 10; At least three guiding salient points 102 of perisporium outer rim 111 correspondence of focusing lens barrel have at least three cylinder ditches 112, and at least three guiding salient points 102 embed in three cylinder ditches 112 respectively at least.
Drive that cylinder 10 carries out forward or during reverse swing offset, embed respectively at least three cylinder ditches 112 of focusing lens barrel 11 by at least three guiding salient points 102 that drive cylinder 10, can make at least three cylinder ditches 112 of focusing lens barrel 11 be subjected at least three tractions that guide salient points 102, and make the axially displacement in driving cylinder 10 of focusing lens barrel 11, with the action of focusing.Axial displacement that it should be noted that focusing lens barrel 11 is along carrying out the optical axis displacement for focusing lens barrel 11; In other words, be the spacing of the image sensing assembly that reduces or increase focusing lens barrel 11 and camera head, to be adjusted to the spacing of suitable focusing lens barrel 11 and image sensing assembly, the image light of object can be focused on the image sensing assembly clearly.
See also Fig. 3, it is for the guiding salient point schematic diagram of Focusing mechanism of the present invention.In above-mentioned, at least three guiding salient points 102 can be linked to be an imaginary line 1021 with the center of circle that drives cylinder 10 respectively, and the angle theta of 1021 of each imaginary lines is greater than 30 degree, and can make at least three guiding salient points 102 identical with distances of opening 101 places that drive in tins 10.wherein, when at least three the guiding salient points 102 quantity be three, can make described three guiding salient points 102 mutually knot connect and form an imaginary plane, and the angle theta of 1021 of its each imaginary lines is greater than 30 degree, carries out axial displacement so that focusing lens barrel 11 can be firm in driving cylinder 10, in more detail, because of the angle theta of 1021 of each imaginary lines of described three guiding salient points 102 greater than 30 degree, so that described three the guiding salient points 102 can be average be distributed in the focusing lens barrel perisporium outer rim 111, to connect into an imaginary plane, can make the focusing lens barrel 11 three cylinder ditches 112 be subjected to three the guiding salient points 102 traction the time, focusing lens barrel 11 is pushed against on three positions simultaneously, to produce more uniform pushing force, to reach the axial displacement of carrying out that focusing lens barrel 11 can be firm in driving cylinder 10, if and when being collided, also there is more firm structure can bear the impulsive force of touching when connecing.
When if the quantity of guiding salient point 102 is designed to one, because focusing lens barrel 11 is only pushed against on a position, may make focusing lens barrel 11 partially by driving a side of tins 10 inside, may cause the slack problem of action in when focusing, may make what is more focusing lens barrel 11 block and form the situation that to focus in driving cylinder 10.Similarly, if when the quantity of guiding salient point 102 is designed to two, the pushing force of carrying out axial displacement because of focusing lens barrel 11 still is evenly distributed not, the slack problem of action in the time of also may causing focusing.Therefore, preferably at least three of the quantity of guiding salient point 102 and a ditch 112 corresponding with it; In the utilization of reality, the angle that satisfies 1021 of each imaginary lines greater than the conditions of 30 degree under and under the permission of design space, the quantity of guiding salient point 102 also can be four, five or more, to obtain more uniform pushing force, make the axial displacement of focusing lens barrel 11 more steady, therefore in the present embodiment, the quantity of guiding salient point 102, should be as limit only as the demonstration aspect.
When each guiding salient point 102 is identical with the distance that drives opening 101 places in tins 10, so that the axial line of focusing lens barrel 11 can be parallel to the axial line that drives cylinder 10, when Focusing mechanism 1 is assembled to camera head, can complete the tilt adjustments of focusing lens barrel 11, with the tilt problem of further improvement Focusing mechanism 1, and can save time of assembling operation.But in the assembly production technology of reality, each guides salient point 102 and the distance that drives opening 101 places in cylinder 10 may produce a little error, but under the requirement of design tolerance, still can make the inclination of Focusing mechanism 1 less than 0.1 degree.
See also Fig. 4 and Fig. 5, Fig. 4 is the first schematic diagram of the second embodiment of Focusing mechanism of the present invention; Fig. 5 is the second schematic diagram of the second embodiment of Focusing mechanism of the present invention.The link of Focusing mechanism 1 and start relation in this example with aforementioned similar, repeat no more in this.As shown in the figure, Focusing mechanism 1 also can comprise a driver module 12, and the outer peripheral edges 103 of driving cylinder have a drive division 104, and driver module 12 is embedded in the drive division 104 that drives cylinder 10.Wherein, the cylinder ditch 112 of focusing lens barrel 11 can be the combination of oblique groove or straight-line groove and oblique groove.Carry out forward or reverse swing offset when driver module 12 drives described driving cylinder 10, and the salient point 102 that respectively guides that drives cylinder 10 is arranged in each ditch 112 of lens barrel 11 of focusing, and respectively guides salient point 102 relying on inwall one side of each ditch 112; By driving each ditch 112 that respectively guides salient point 102 traction focusing lens barrels 11 of cylinder 10 so that and then focusing lens barrel 11 produce axial displacements, to focus.Wherein driver module 12 can be arranged in Focusing mechanism 1 or camera head, carry out forward or reverse rotation to drive cylinder 10, it can be d.c. motor or step motor, and can be further by the start of a control module (not being illustrated in figure) with the control motor, and then drive to drive cylinder 10 forward or retrograde rotation, and carry out the action of zoom.
See also Fig. 5, in more detail, inwall one side of the oblique groove part of the cylinder ditch 112 of focusing lens barrel 11 is relying on guiding salient point 102, when driving cylinder 10 forward rotates, because the madial wall of cylinder ditch 112 is an inclined-plane, can make a ditch 112 upwards climb along guiding salient point 102, be to make and focus lens barrel 11 axial displacements to driving cylinder 10, to drive lens barrel 11 displacements of focusing; Similarly, when driving cylinder 10 retrograde rotation, can make a ditch 112 move down along guiding salient point 102, axial displacement is to driving cylinder 10 gradually to make focusing lens barrel 11, and an end of focusing lens barrel 11 exposes to and drives outside cylinder 10.
See also Fig. 6, it is the schematic diagram for the camera head of Focusing mechanism of the present invention.Focusing mechanism 1 of the present invention can be applied on camera head 2.Camera head 2 comprises a Focusing mechanism 1, a driver module 12, an image sensing assembly 20, a control module 21, a display module 22 and several control knobs 23.Wherein the link of Focusing mechanism 1 and start relation in this example, with aforementioned similar, repeat no more in this.Driver module 12 can be arranged in Focusing mechanism 1 or camera head 2.Image sensing assembly 20 is arranged at the inside of camera head 2.Image sensing assembly 20 can be Charged Coupled Device (Charge-Coupled Device, CCD) or CMOS (Complementary Metal Oxide Semiconductor) (Complementary Metal-Oxide-Semiconductor, the sensory package such as CMOS), can be in order to the image light of sensing object, with the object imaging.Control module 21 can be arranged in camera head 2, and electrically connect driver module 12, to control the start of driver module 12, it can be microprocessor controller (Microprocessor Control Unit), central processing unit (Central Processing Unit, CPU) or microprocessor (Micro-Processing Unit).Display module 22 can be liquid crystal display (Liquid Crystal Display, LCD) or touch control type LCD screen; Display module 22 is arranged at the outside of camera head 2, and electrically connect image sensing assembly 20, in order to show image.Several control knobs 23 are arranged at the outside of camera head 2, and electrically connect control module 21.
When the user presses one of several control knobs 23 by camera head 2 when focusing, control module 21 is controlled driver module 12 starts, is rotated displacement to drive cylinder 10.And when driving cylinder 10 is rotated displacement, focusing lens barrel 11 carries out axial displacement, has suitable spacing to adjust focusing lens barrel 11 and 20 of image sensing assemblies, so that the image image formation by rays of object is on the imaging surface of image sensing assembly 20, with with the object imaging, and can show by display module 22, to complete the action of focusing.
In above-mentioned, drive that cylinder 10 carries out forward or during reverse swing offset, embeds respectively in three cylinder ditches of the lens barrel 11 of focusing 112 by three guiding salient points 102 that drive cylinder 10, can make the oblique channel portions of three cylinder ditches 112 of focusing lens barrel 11 be subjected to three tractions that guide salient points 102, and then drive focusing lens barrel 11 carries out relative displacement along optical axis and image sensing assembly 20, to adjust suitable spacing, the image light of being made a video recording can be focused clearly, with the object imaging on the imaging surface of image sensing assembly 20.It should be noted that respectively to guide salient point 102 identical with the distance of image sensing assembly 20 on optical axis, and can make eyeglass in focusing lens barrel 11 be parallel to as much as possible the imaging surface of image sensing assembly 20, to reach the inclination purpose of improvement Focusing mechanism 1.
In sum, Focusing mechanism and camera head thereof can drive at least three guiding salient points of cylinder and embed at least three cylinder ditches of focusing lens barrel by use, embedding that can the be firm lens barrel of firmly focusing, even if Focusing mechanism and camera head thereof have born the impulsive force of the situations such as collision, the structure in the time of still can keeping it and dispatch from the factory and the correction of focusing.And Focusing mechanism and camera head thereof can embed in three cylinder ditches of focusing lens barrels by three guiding salient points that use drives cylinder at least at least, and at least three guiding salient points can be linked to be an imaginary line with the center of circle that drives cylinder respectively, and the angle between each imaginary line is greater than 30 degree, to reach the stressed comparatively even of the driven cylinder pushing and pressing of focusing lens barrel, the stability in the time of can improving by this moving axially of Focusing mechanism.Moreover at least three guiding salient points of Focusing mechanism and camera head thereof are positioned on same imaginary plane, and this imaginary plane can be parallel with the imaging surface of the end face that drives cylinder or image sensing assembly, can improve by this tilt problem of Focusing mechanism.
The above is only for example, but not for making restriction.Anyly do not break away from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be contained in claim protection domain of the present invention.
Claims (10)
1. a Focusing mechanism, is characterized in that, it comprises:
One drives cylinder, is the hollow tube-shape structure, and the opening part of one end protrudes out to the axle center and is provided with at least three guiding salient points; And
One focusing lens barrel, be the hollow tube-shape structure, it is arranged in described driving cylinder, corresponding described at least three the guiding salient points of the perisporium outer rim of described focusing lens barrel have at least three cylinder ditches, and described at least three guiding salient points embed respectively in described three cylinder ditches at least, when described driving cylinder rotation, described at least three cylinder ditches of described focusing lens barrel are subjected to the traction of described at least three guiding salient points, and make the axially displacement in described driving cylinder of described focusing lens barrel.
2. Focusing mechanism as claimed in claim 1, is characterized in that, described at least three guiding salient points are linked to be an imaginary line with the described center of circle that drives cylinder respectively, and the angle between each described imaginary line is greater than 30 degree.
3. Focusing mechanism as claimed in claim 1, is characterized in that, the distance of the opening in described at least three guiding salient points and described drive tin is identical.
4. Focusing mechanism as claimed in claim 1, is characterized in that, also comprises a driver module, and the described outer peripheral edges that drive cylinder have a drive division, and described driver module is embedded in the described described drive division that drives cylinder.
5. Focusing mechanism as claimed in claim 4, it is characterized in that, when the described driving cylinder of described driver module driving is rotated displacement, utilize described at least three cylinder ditches of described focusing lens barrel drawn by described described at least three the guiding salient points that drive cylinder, and then drive the axial displacement of described focusing lens barrel, to focus.
6. a camera head, is characterized in that, comprises:
One image sensing assembly is that to be arranged at described camera head inner; And
One Focusing mechanism comprises:
One drives cylinder, is the hollow tube-shape structure, and the opening part of one end protrudes out to the axle center and is provided with at least three guiding salient points; And
One focusing lens barrel, be the hollow tube-shape structure, it is arranged in described driving cylinder, corresponding described at least three the guiding salient points of the perisporium outer rim of described focusing lens barrel have at least three cylinder ditches, and described at least three guiding salient points embed respectively in described three cylinder ditches at least, when described driving cylinder rotation, described at least three cylinder ditches of described focusing lens barrel are subjected to the traction of described at least three guiding salient points, and make the axially displacement in described driving cylinder of described focusing lens barrel, to focus in described image sensing assembly and imaging.
7. camera head as claimed in claim 6, is characterized in that, described at least three guiding salient points are linked to be an imaginary line with the described center of circle that drives cylinder respectively, and the angle between each described imaginary line is greater than 30 degree.
8. camera head as claimed in claim 6, is characterized in that, described at least three guiding salient points are identical with the distance of described image sensing assembly on optical axis.
9. camera head as claimed in claim 6, is characterized in that, also comprises a driver module, and the described outer peripheral edges that drive cylinder have a drive division, and described driver module is embedded in the described described drive division that drives cylinder.
10. camera head as claimed in claim 9, it is characterized in that, when the described driving cylinder of described driver module driving is rotated displacement, utilize described at least three cylinder ditches of described focusing lens barrel to be subjected to the described traction that drives described at least three guiding salient points of cylinder, and then drive described focusing lens barrel and carry out relative displacement along optical axis and described image sensing assembly, to focus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103779926A CN103135194A (en) | 2011-11-24 | 2011-11-24 | Focusing mechanism and shooting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103779926A CN103135194A (en) | 2011-11-24 | 2011-11-24 | Focusing mechanism and shooting device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103135194A true CN103135194A (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103779926A Pending CN103135194A (en) | 2011-11-24 | 2011-11-24 | Focusing mechanism and shooting device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001318292A (en) * | 2000-05-12 | 2001-11-16 | Sigma Corp | Lens barrel |
| CN1508588A (en) * | 2002-12-18 | 2004-06-30 | 佳能株式会社 | Lens device and camera |
| JP2007101627A (en) * | 2005-09-30 | 2007-04-19 | Matsushita Electric Ind Co Ltd | Automatic focus adjustment method |
| US20100259837A1 (en) * | 2009-04-10 | 2010-10-14 | Terahara Daisuke | Lens driver unit, imaging device, and hand-held data terminal device |
| CN102103245A (en) * | 2009-12-21 | 2011-06-22 | 佛山普立华科技有限公司 | Zoom lens |
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2011
- 2011-11-24 CN CN2011103779926A patent/CN103135194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001318292A (en) * | 2000-05-12 | 2001-11-16 | Sigma Corp | Lens barrel |
| CN1508588A (en) * | 2002-12-18 | 2004-06-30 | 佳能株式会社 | Lens device and camera |
| JP2007101627A (en) * | 2005-09-30 | 2007-04-19 | Matsushita Electric Ind Co Ltd | Automatic focus adjustment method |
| US20100259837A1 (en) * | 2009-04-10 | 2010-10-14 | Terahara Daisuke | Lens driver unit, imaging device, and hand-held data terminal device |
| CN102103245A (en) * | 2009-12-21 | 2011-06-22 | 佛山普立华科技有限公司 | Zoom lens |
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Application publication date: 20130605 |