CN101206297A - Piezo-electricity drive type optical lens - Google Patents
Piezo-electricity drive type optical lens Download PDFInfo
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- CN101206297A CN101206297A CN 200610169232 CN200610169232A CN101206297A CN 101206297 A CN101206297 A CN 101206297A CN 200610169232 CN200610169232 CN 200610169232 CN 200610169232 A CN200610169232 A CN 200610169232A CN 101206297 A CN101206297 A CN 101206297A
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Abstract
A piezoelectric drive type optical camera lens comprises a camera lens body, a piezoelectric actuator used to provide driving force and a position sensing device used for sensing position change, wherein, the camera lens body at least has a hollow seat body, a lens barrel capable of moving in axial direction and positioned inside the hollow seat body, and a lens group fixed on the lens barrel; the piezoelectric actuator is used to drive the lens barrel to move along axial direction relative to the hollow seat body, thereby completing telescopic zooming; while the position sensing device is used for sensing the axial position of the lens barrel relative to the hollow seat body. Therefore, the simple piezoelectric drive type optical camera lens is formed through adopting the members, and overcomes the disadvantage of complicated members of the prior art.
Description
Technical field
The present invention relates to a kind of optical lens, refer to a kind of piezo-electricity activation type optical lens especially.
Background technology
The optical system that is used for mobile phone or camera in recent years, because of the restriction of himself thickness will make optical system and actuator structure simple as much as possible, volume dwindles as far as possible, to adapt to the development trend of the low framework of this class device.Piezo-activator has that volume is little, big, the low power consumption of exerting oneself, silent and compatible advantages of higher, and but quilt is applied in digital camera or the camera cell phone, be used for driving optical lens, make this optical lens have the effect that furthers or zoom out, become one of important technology of optical system or dependent merchandise.
China announces in No. 589777 patent of invention and discloses the piezoelectric actuated formula ultrasonic motor of a kind of multi-layer thin dish, be that piezo with the piezoelectricity material passes to high-tension alternating voltage and produces alternately flexible deformation, interlock elastic vibration plate produces moving standing wave and supplies with external kinetic energy, and forms driver module with perpendicular or parallel symmetrical manner.Though case can reduce the abrasion of assembly before this patent, yet, therefore cause the motor configuration complexity, and be difficult to microminiaturization and cause the restriction of range of application owing to must be used in combination many group driver modules.
United States Patent (USP) the 7th, 099, No. 093 case discloses a kind of small-sized camera lens module, as shown in Figure 1, mainly be to utilize piezo-activator 100 to drive power wheels 101 location rotating screw bolts 102, and then camera lens 103 produced advance or retreat, by principle of moments M=r x F viewpoint, power wheel 101 miniaturizations, though can make whole smaller volume, piezo-activator 100 must be exerted oneself strengthen and power hungry, if power wheel 101 becomes big, then Zheng Ti volume can increase relatively, is unfavorable for miniaturization.
United States Patent (USP) the 5th, 225, No. 941 case discloses a kind of drive unit, as shown in Figure 2, mainly is to utilize lamination type piezo-activator 104 when power source, shell fragment 105 generation precompressions, when drive signal is imported, can drive camera lens 106 and advance or retreat, but, lamination type piezo-activator 104 must be made multilayer laminated boards formula piezoelectric patches just can be had big displacement and exert oneself greatly, so, its slimming certainly will be had any problem.
United States Patent (USP) the 6th, 710, No. 950 case discloses a kind of piezo-activator that is applied to the optical system of digital camera, be included in sleeve 108 combined outside one piezo-activator 109 of installing mirror group 107, this piezo-activator 109 is included in the inner surface of a circuit board 110 and equally spaced installs a plurality of piezoelectric patches 111, and in the protruding pad 112 of this piezoelectric patches 111 surface combination, one engagement respectively, thereby produce surface wave by applying a voltage to respectively this piezoelectric patches 111 that is surrounded on these mirror group 107 outer circumference surfaces, so that respectively the protruding pad 112 of this engagement is stirred mirror group 107 synchronously with respect to these lens barrel 108 axial displacements, and then the optical zoom or the focusing of reaching digital camera.But the preceding case of this patent must be used most piezoelectric elements and cause the difficulty that cost is expensive and assemble, moreover want driven in synchronism respectively this piezoelectric element stir the precision that the mirror group also is very difficult to control displacement, in addition, the length of lens barrel 108 must be foundation with the displacement of moving, if the distance that moves, then the length of lens barrel 108 also need extend, unfavorable trend toward miniaturization.
United States Patent (USP) the 6th, 961, No. 193 case discloses a kind of drive unit that is applied to drive camera lens, as shown in Figure 4, mainly be to produce inertial force by piezoelectric patches 113 to drive camera lens 114 and advance or retreat, but, in order to produce inertial force, add to have adorned mass 115 in the outside, not only make whole external diameter become big, also make overall weight increase.
Because the shortcoming of aforementioned prior art, how a kind of piezo-electricity activation type optical lens is provided torsion is big, volume is little, member is simple realize to drive, firm in structure, easy to manufacture with assemble effects such as convenient, and then overcome the existing problem of background technology, be to become the problem that present industry is demanded urgently overcoming.
Summary of the invention
The shortcoming of background technology in view of the above, one of the present invention purpose promptly is to provide a kind of piezo-electricity activation type optical lens of simplifying member.
Another object of the present invention is to provide a kind of piezo-electricity activation type optical lens of reduced volume.
A further object of the present invention is to provide a kind of piezo-electricity activation type optical lens that promotes torsion.
Another purpose of the present invention is to provide a kind of piezo-electricity activation type optical lens firm in structure.
The present invention's another purpose again is to provide a kind of piezo-electricity activation type optical lens that is easy to make.
The present invention again again a purpose be to provide a kind of piezo-electricity activation type optical lens that is easy to assemble.
For reaching above-mentioned purpose and other purpose, the invention provides a kind of piezo-electricity activation type optical lens, comprise: the camera lens body, have at least external connection form a unthreaded hole hollow base frame, can being positioned the lens barrel in this hollow base frame and being fixed in this lens barrel and along this unthreaded hole axle center axially-movable to mirror group that should the unthreaded hole axle center; Piezo-activator, it is disposed between inner and this lens barrel of this hollow base frame, in order to drive this lens barrel with respect to this hollow base frame zoom that stretches that moves vertically; And position sensing apparatus, it is disposed in this hollow base frame, in order to the axial location of this lens barrel of sensing with respect to this hollow base frame.
In the aforesaid piezo-electricity activation type optical lens, this camera lens body also can have a lid, and this hollow base frame can have an opening that is positioned at this unthreaded hole opposite side, and for this lens barrel, mirror group, and piezo-activator are installed, and this lid of involution gives spacing whereby.In addition, this camera lens body also can have first guidance part of being located in this hollow base frame and being parallel to this unthreaded hole axis direction, this lens barrel outside then can corresponding be provided with the second relative guidance part, so as to guide this lens barrel in this hollow base frame along this unthreaded hole axle center axially-movable, preferably, this first guidance part comprises the guide rail of being located at the inner both sides of this hollow base frame, and this second guidance part comprises that then correspondence is located at the guide groove of these lens barrel both sides.
This camera lens body is the mirror group that can have many lens barrels and respective amount, wherein, this mirror group can be a slice optical mirror slip, and the eyeglass group wherein one.This position sensing apparatus is to be selected from optical profile type sensing apparatus, and electromagnetic type sensing apparatus wherein a kind of.In a preferred embodiment, this position sensing apparatus can comprise the position reaction assembly that is fixed in this lens barrel outside and be fixed in the signal receiving assembly of this hollow base frame with received signal; In another preferred embodiment, this position sensing apparatus can comprise the position reaction assembly that is fixed in this hollow base frame and be fixed in the signal receiving assembly of this lens barrel outside with received signal.Aforementioned this position reaction assembly can be reflective bar code and this signal receiving assembly can be sensor.
This camera lens body also can comprise the wear-resisting portion that is located at the inner surface of this hollow base frame, and this piezo-activator can be fixed in this lens barrel outside, and this wear-resisting of order and this piezo-activator keep in touch.Preferably, this piezo-activator comprises piezoelectric stator and the prestressing apparatus that is fixed in this lens barrel outside, and makes this piezoelectric stator and this wear-resisting portion keep in touch, and in addition, this lens barrel outside can be provided with C type draw-in groove tightly to put this piezoelectric stator.In a preferred embodiment, this prestressing apparatus can comprise that one is disposed at the elastic parts between this piezoelectric stator and this lens barrel outside, and wherein, this elastic parts is a rubber blanket for example.In another preferred embodiment, this prestressing apparatus can comprise be disposed at this lens barrel relatively away from the adjusting lever of this wear-resisting side, be fixed in this adjusting lever and the contact of rolling to the roller of this hollow base frame inner surface and provide this roller to contact prestressed elastic parts, wherein, this elastic parts can be spring, for example compression spring or torque spring.
In addition, this camera lens body also can comprise the wear-resisting portion that is located at this lens barrel outside, and this piezo-activator can be fixed in the inner surface of this hollow base frame, and this wear-resisting of order and this piezo-activator keep in touch.Preferably, this piezo-activator comprises piezoelectric stator and the prestressing apparatus that is fixed in the inner surface of this hollow base frame, and makes this piezoelectric stator and this wear-resisting portion keep in touch, and simultaneously, the inner surface of this hollow base frame can be provided with C type draw-in groove tightly to put this piezoelectric stator.In a preferred embodiment, this prestressing apparatus can comprise that one is disposed at the elastic parts between this piezoelectric stator and the inner surface of this hollow base frame, and wherein, this elastic parts can be a rubber blanket.
Moreover, this camera lens body also can comprise the wear-resisting portion that is located at this lens barrel outside, and this piezo-activator can comprise and is fixed in this lens barrel outside relatively away from the prestressing apparatus of this wear-resisting portion and be fixed in the piezoelectric stator that the inner surface of this hollow base frame and this wear-resisting portion keep in touch, simultaneously, the inner surface of this hollow base frame can be provided with C type draw-in groove tightly to put this piezoelectric stator.In a preferable enforcement, this prestressing apparatus can comprise be disposed at this lens barrel relatively away from the adjusting lever of this wear-resisting side, be fixed in this adjusting lever and the contact of rolling to the roller of this hollow base frame inner surface and provide this roller to contact prestressed elastic parts, wherein, this elastic parts can be spring, for example compression spring or torque spring.
Aforesaid wear-resisting portion can be slide rail, preferably, the material of this slide rail be selected from metal, oxide, and abrasion resistance material wherein one.This piezoelectric stator can comprise a metal tube and two piezoelectric ceramic pieces, preferably, two piezoelectric ceramic pieces are fixedly arranged on the outside surface of this metal tube at interval, and the number of plies of this piezoelectric ceramic piece can be single or multiple lift, simultaneously, this piezoelectric ceramic piece can be done wherein one of polarization, electrode coating or cutting according to condition shape.
Than prior art, the present invention utilizes the drive pressure electric actuator, and the zoom that can reach the mirror group moves and obtain the image quality of the best, has reached the big and little purpose of volume of torsion, applicable to mobile phone camera.In addition, camera lens body of the present invention, piezo-activator, and main member such as position transducer do not have complicated design, also reach and simplify member and firm purpose.And main member of the present invention can use general requirements product or one-body molded fabricator, so have effect easy to manufacture.Moreover composition member of the present invention all has its location or chimeric place, assembles effect easily so also have.Hence one can see that, and the present invention overcomes the disappearance of background technology relatively, the industrial utilization of real tool height.
Description of drawings
Fig. 1 is the structural representation that shows the 7th, 099, No. 093 case of United States Patent (USP);
Fig. 2 is the structural representation that shows the 5th, 225, No. 941 cases of United States Patent (USP);
Fig. 3 is the structural representation that shows the 6th, 710, No. 950 cases of United States Patent (USP);
Fig. 4 is the structural representation that shows the 6th, 961, No. 193 cases of United States Patent (USP);
Fig. 5 is the first embodiment synoptic diagram that shows piezo-electricity activation type optical lens of the present invention;
Fig. 6 is the first embodiment explosive view that shows piezo-electricity activation type optical lens of the present invention;
Fig. 7 is the second embodiment explosive view that shows piezo-electricity activation type optical lens of the present invention; And
Fig. 8 is the 3rd embodiment explosive view that shows piezo-electricity activation type optical lens of the present invention.
The primary clustering symbol description
100 piezo-activators
101 power wheels
102 screw rods
103 camera lenses
104 lamination type piezo-activators
105 shell fragments
106 camera lenses
107 mirror groups
108 sleeves
109 piezo-activators
110 circuit boards
111 piezoelectric patches
The protruding pad of 112 engagements
113 piezoelectric patches
114 camera lenses
115 masses
2 camera lens bodies
21 hollow base frames
211 unthreaded holes
212 optical mirror slips
213 openings
214 jacks
22 lens barrels
221 second guidance parts
222C type draw-in groove
23 mirror groups
24 lids
241 jacks
25 first guidance parts
26 wear-resisting portions
3,3 ', 3 " piezo-activator
31,31 ', 31 " piezoelectric stator
311 metal tubes
312 piezoelectric ceramic pieces
32,32 ', 32 " prestressing apparatus
321 " adjusting lever
322 " roller
323 " elastic parts
33 ', 33 " base
331 ', 331 " C type draw-in groove
4 position sensing apparatus
41 position reaction assemblies
42 signal receiving assemblies
Embodiment
Following conjunction with figs. explanation specific embodiments of the invention are so that those skilled in the art can understand technical characterictic of the present invention easily and reach effect.
First embodiment
As Fig. 5 and shown in Figure 6, the invention provides a kind of piezo-electricity activation type optical lens, comprise camera lens body 2, be used to provide the piezo-activator 3 of driving force and be used for the position sensing apparatus 4 that sense position changes.This camera lens body 2 have at least external connection form a unthreaded hole 211 hollow base frame 21, can being positioned the lens barrel 22 in this hollow base frame 21 and being fixed in this lens barrel 22 and along these unthreaded hole 211 axle center axially-movables to mirror group 23 that should unthreaded hole 21 axle center.This piezo-activator 3 is disposed between inner and this lens barrel 22 of this hollow base frame 21, in order to drive this lens barrel 22 with respect to this hollow base frame 21 zoom that stretches that moves vertically.This position sensing apparatus 4 is disposed in this hollow base frame 21, and in order to the axial location of this lens barrel 22 of sensing with respect to this hollow base frame 21, the piezo-electricity activation type optical lens simplified of member thus overcomes the shortcoming of prior art member complexity.
Though the camera lens body 2 in the present embodiment is to be example to fix two lens barrels 22 in the hollow base frame 21 with corresponding mirror group 23, the piezo-activator 3 of being arranged in pairs or groups is similarly corresponding two groups with position sensing apparatus 4, but can dispose in right amount according to the design of actual optical system in other embodiments, that is decide according to the designed mirror group quantity of optical system, select this camera lens body 2 can have the mirror group 23 of single or many lens barrels 22 and respective amount, non-configuration quantity with present embodiment is exceeded; Wherein, this mirror group 23 can be taked single optical mirror slip or eyeglass group according to Design for optical system, but these collocation design are not the technical characterictic of optical lens of the present invention, so will not give unnecessary details.In addition, though it is numerous to have the camera lens body pattern of flexible zoom function, and every have a hollow base frame 21, can be along the lens barrel 22 in this hollow base frame 21 of being positioned of these unthreaded hole 211 axle center axially-movables, and the camera lens body that is fixed in this lens barrel 22 and mirror group that should unthreaded hole 21 axle center is all belonged to the present invention and used, yet for those of ordinary skill in the technical field under making all can be implemented the present invention according to this by embodiment, so still proposing feasible camera lens body 2 structural designs is example, but, do not illustrated in order to the category of restriction indication camera lens body of the present invention.
Please cooperate and consult Fig. 5 and Fig. 6, further specify this camera lens body 2, be used to provide the piezo-activator 3 of driving force and be used for the position sensing apparatus 4 that sense position changes.
This camera lens body 2 have at least external connection form a unthreaded hole 211 hollow base frame 21, can being positioned the lens barrel 22 in this hollow base frame 21 and being fixed in this lens barrel 22 and along these unthreaded hole 211 axle center axially-movables to mirror group 23 that should unthreaded hole 21 axle center.In present embodiment, in the hollow base frame 21 of this camera lens body 2, dispose two lens barrels 22, reach corresponding two mirror groups 23 that are fixed in these two lens barrels 22, so but quantitative variation and be tantamount to the design of practical structures such as therefore is to illustrate one of them lens barrel 22 and mirror group 23.
The front end of this hollow base frame 21 has a unthreaded hole 211, and assemble these unthreaded holes 211 of an optical mirror slip (or eyeglass group) 212 sealing, being provided with in the hollow base frame 21 can being positioned the lens barrel 22 in this hollow base frame 21 and being fixed in this lens barrel 22 and to mirror group 23 that should unthreaded hole 21 axle center along these unthreaded hole 211 axle center axially-movables.In present embodiment, this camera lens body 2 also has a lid 24, and this hollow base frame 21 can have an opening 213 that is positioned at this unthreaded hole opposite side, and for this lens barrel 22, mirror group 23, and spare part such as piezo-activator 3 are installed, and this lid 24 of involution gives spacing whereby.In addition, this camera lens body 2 also has first guidance part 25 of being located in this hollow base frame 21 and being parallel to this unthreaded hole axis direction, these lens barrel 22 outsides then correspondence are provided with the second relative guidance part 221, so as to guide this lens barrel 22 in this hollow base frame 21 along these unthreaded hole 211 axle center axially-movables, wherein, this first guidance part 25 is to be example with the guide rail of being located at these hollow base frame 21 inner both sides, this second guidance part 221 then is that the guide groove of being located at these lens barrel 22 both sides with correspondence is an example, is provided with corresponding jack 214 in this hollow base frame 21 with these lid 24 both sides, it is first guidance part 25 of example that 241 confessions are pegged graft with the guide rail.
This piezo-activator 3 is disposed between inner and this lens barrel 22 of this hollow base frame 21, in order to drive this lens barrel 22 with respect to this hollow base frame 21 zoom that stretches that moves vertically.In present embodiment, this camera lens body 2 also comprises wear-resisting 25 that is located at these hollow base frame 21 inner surfaces, and this piezo-activator 3 is fixed in this lens barrel 22 outsides, and order this wear-resisting 25 and this piezo-activator 3 keep in touch, wherein, this piezo-activator 3 comprises piezoelectric stator 31 and the prestressing apparatus 32 that is fixed in these lens barrel 22 outsides, and make this piezoelectric stator 31 keep in touch with this wear-resisting 26, in addition, these lens barrel 22 outsides can be provided with C type draw-in groove 222 tightly to put this piezoelectric stator 31, and therefore the optimal fixation boundary condition of this piezoelectric stator 31 is provided.
In addition, the prestressing apparatus 32 that is provided in the present embodiment is to be example with an elastic parts that is disposed between this piezoelectric stator 31 and this lens barrel 22 outsides, and for example a rubber blanket or shell fragment are in order to provide these piezoelectric stator 31 contacts to this prestress of wear-resisting 26.Aforesaid wear-resisting 26 is to be example with the slide rail, and particularly the slide rail made from wherein a kind of material of metal, oxide or abrasion resistance material is advisable.
This piezoelectric stator 31 comprises a metal tube 311 and two piezoelectric ceramic pieces 312, wherein, this metal tube 311 can be selected aluminum pipe or copper pipe (for example brass tube) for use, and these two piezoelectric ceramic pieces 312 are the outside surfaces that are fixedly arranged on this metal tube 311 at interval, for example take to be mutually the interval mode configuration of 90 degree angles.In addition, the number of plies of this piezoelectric ceramic piece 312 can be single or multiple lift, and simultaneously, this piezoelectric ceramic piece 312 can be done polarization, electrode coating or cutting according to condition shape.
This metal tube 311 can supply to connect the negative pole of establishing extra electric field, and two these piezoelectric ceramic pieces 312 respectively can be for connecing the positive pole of establishing two groups of extra electric fields.By applying voltage (for example string ripple driving voltage Vsin ω t or Vcos ω t) on one piezoelectric ceramic piece 312, utilize inverse piezoelectric effect to make this piezoelectric stator 31 produce the mechanical energy of high frequency beat, and then form the circular motion of similar hula hoop mode, and the two-way rotation of may command (forward and reverse) power is to drive this lens barrel 22 with respect to this hollow base frame 21 zoom that stretches that moves vertically.Certainly, also can adopt with for example square wave or sawtooth wave driving voltage and apply on it, non-ly exceed with the string ripple driving voltage shown in the present embodiment.
In addition, though the piezoelectric stator 31 described in the present embodiment is to comprise that a metal tube 311 and two piezoelectric ceramic pieces 312 are example, but every circular motion person that similar hula hoop mode is provided all should conform with the piezoelectric stator 31 of indication of the present invention, for example also can adopt common piezo tube (Piezoelectric Tube), it comprises that one for example is the tubular piezo-electric ceramic body of lead zirconate titanate or electrostriction material, and be arranged at first of this piezoelectric ceramic body outer wall and space, second, with third electrode, and can borrow this first electrode connect the negative pole of establishing extra electric field, and this second, third electrode connects the positive pole of establishing two groups of extra electric fields respectively.
Be to be example with corresponding mirror group 23 in the hollow base frame 21 of aforementioned this camera lens body 2 to dispose two lens barrels 22, respectively the direction of these lens barrel 22 configuration piezo-activators 3 is to put upside down mutually, that is wherein a lens barrel 22 disposes piezo-activator 3 at the top, another lens barrel 22 then is in bottom configuration piezo-activator 3, and with wear-resisting 26 upper and lower surface that is individually fixed in these hollow base frame 21 inside of correspondence, complementary allocative effect can be provided thus and dwindle configuration space, be more conducive to dwindle the overall volume of piezo-electricity activation type optical lens provided by the present invention.
This position sensing apparatus 4 is for being selected from the optical profile type sensing apparatus, reaching the wherein a kind of of electromagnetic type sensing apparatus, in present embodiment, this position sensing apparatus 4 comprises the position reaction assembly 41 that is fixed in these lens barrel 22 outsides and is fixed in the signal receiving assembly 42 of this hollow base frame 21 with received signal, and described position reaction assembly 41 is to be that example, signal receiving assembly 42 then are to be example with the sensor with reflective bar code.Because the sharpness of the image quality of optical lens integral body is that the activation point precision prescribed of two arrangement of mirrors groups 23 is high, therefore utilize position sensing apparatus 4 to provide the real time position signal can guarantee to feed back and the drive controlling of revising this piezo-activator 3, make this lens barrel 22 guarantee to be positioned at correct position, thereby guarantee the sharpness of image quality.Certainly, but this position sensing apparatus 4 is reverse configuration also, do not exceed with shown in the present embodiment, for example this position reaction assembly 41 can be fixed in this hollow base frame 21, reach fixed signal receiving unit 42 in these lens barrel 22 outsides, but these allocation positions simple and easy exchange change should be under the technical field those of ordinary skill all can understand and implement according to this, so arrange in pairs or groups no longer in addition embodiment and accompanying drawing are given unnecessary details.
Second embodiment
See also Fig. 7, present embodiment only is that with the difference of first embodiment design of piezo-activator 3 ' is different with allocation position, the design of the hollow base frame 21 of all the other relevant lens bodies 2, lens barrel 22, mirror group 23 and position sensing apparatus 4 is all roughly the same, only the structural design of partly relevant piezo-activator 3 ' has been carried out the adjustment of allocation position, therefore the identical part of repeat specification no longer, also no longer redefine element numbers, in order to avoid too give unnecessary details, its different place, explanation hereby below only are described.
As shown in Figure 7, this camera lens body 2 also comprises wear-resisting 26 that is located at these lens barrel 22 outsides, and this piezo-activator 3 ' is to be fixed in this hollow base frame 21 inner surfaces, and order this wear-resisting 26 and this piezo-activator 3 ' keep in touch, that is this wear-resisting 26 change into and be fixed to corresponding lens barrel 22 outsides, and this piezo-activator 3 ' then changes into and is fixed in this hollow base frame 21 inner surfaces.Described this piezo-activator 3 ' comprises piezoelectric stator 31 ' and the prestressing apparatus 32 ' that is fixed in these hollow base frame 21 inner surfaces, and make this piezoelectric stator 31 ' keep in touch with this wear-resisting 26, simultaneously, these hollow base frame 21 inner surfaces can be provided with C type draw-in groove 331 ' tightly to put this piezoelectric stator 31 '.In present embodiment, this prestressing apparatus 32 ' is that to be disposed at one between this piezoelectric stator 31 ' and this hollow base frame 21 inner surfaces for example be that the elastic parts of rubber blanket or shell fragment is an example equally.In addition, though be to borrow a base 33 ' that C type draw-in groove 331 ' is set in advance in the present embodiment, after installing on it with piezoelectric stator 31 ' this prestressing apparatus 32 ', again with these 33 ' corresponding positions that are fixed to the inner surface of hollow base frame 21 of this base, but in other embodiment, also this C type draw-in groove 331 ' directly can be formed at the corresponding position on these hollow base frame 21 inner surfaces, omit the design of described base 33 ', therefore absolutely not only exceed with shown in the present embodiment.
The 3rd embodiment
See also Fig. 8, present embodiment only is piezo-activator 3 with the difference of second embodiment " design and allocation position different; the design of the hollow base frame 21 of all the other relevant lens bodies 2, lens barrel 22, mirror group 23 and position sensing apparatus 4 is all identical; the therefore identical part of repeat specification no longer; also no longer redefine element numbers; in order to avoid too give unnecessary details, and below its different place, explanation hereby only is described.
As shown in Figure 8, this camera lens body 2 also comprises wear-resisting 26 that is located at these lens barrel 22 outsides, and this piezo-activator 3 " comprise and be fixed in this lens barrel outside 22 relatively away from this prestressing apparatus of wear-resisting 26 32 " and be fixed in this hollow base frame 21 inner surfaces and this wear-resisting 26 piezoelectric stators that keep in touch 31 "; simultaneously, these hollow base frame 21 inner surfaces bases 33 of arranging in pairs or groups " be provided with C type draw-in groove 331 " tightly to put this piezoelectric stator 31 ".In present embodiment, this prestressing apparatus 32 " comprise be disposed at this lens barrel 22 relatively away from the adjusting levers 321 of this wear-resisting 26 side ", be fixed in this adjusting lever 321 " and the roller 322 of contact that roll to these hollow base frame 21 inner surfaces " and this roller 322 is provided " the prestressed elastic parts 323 of contact ", wherein, this elastic parts 323 " be to be example with the spring, for example compression spring or torque spring.Same, though be to borrow a base 33 in advance in the present embodiment " C type draw-in groove 331 is set ", with this prestressing apparatus 32 " with piezoelectric stator 31 " install on it after, again with this base this 33 " be fixed to the corresponding positions on the inner surface of hollow base frame 21; but also can be in other embodiment with this C type draw-in groove 331 " directly be formed at the corresponding positions on this hollow base frame 21 inner surfaces, omit described base 33 " design.
The 3rd embodiment of aforementioned announcement is a design architecture, can similarly be applied among first embodiment, the prestressing apparatus of first embodiment is replaced to the structural design of the 3rd embodiment, that is in the framework at first embodiment, this prestressing apparatus also replaceable for comprise be disposed at this lens barrel relatively away from the adjusting lever of this wear-resisting side, be fixed in this adjusting lever and the contact of rolling to the roller of this hollow base frame inner surface and provide this roller to contact prestressed elastic parts.Because the technical field those of ordinary skill all can be understood and implements according to this under the integral body of local member was replaced and be should be among these each embodiment, so arrange in pairs or groups no longer in addition embodiment and accompanying drawing are given unnecessary details.
In sum, the present invention utilizes the camera lens body, piezo-activator, and member such as position sensing apparatus is formed the embodiment of aforementioned many optical lens, reached a kind of video-signal system that is placed in, surveillance, optical system, camera, but the piezo-electricity activation type optical lens in digital camera or the camera cell phone, and this piezo-electricity activation type optical lens to have torsion big, volume is little, member is simple, firm in structure, easy to manufacture with the assembling convenient grade effect person, overcome shortcoming of the prior art already, meet usability on the industry in the patented claim important document, novelty and progressive.
The foregoing description is illustrative principle of the present invention and effect thereof only, but not is used to limit the present invention.The technical field those of ordinary skill all can be under spirit of the present invention and category under any, and the foregoing description is modified and changed.Therefore, the scope of the present invention, the claim scope is listed as described later.
Claims (29)
1. piezo-electricity activation type optical lens comprises:
The camera lens body, have at least external connection form a unthreaded hole hollow base frame, can being positioned the lens barrel in this hollow base frame and being fixed in this lens barrel and along this unthreaded hole axle center axially-movable to mirror group that should the unthreaded hole axle center;
Piezo-activator is disposed between inner and this lens barrel of this hollow base frame, in order to drive this lens barrel with respect to this hollow base frame zoom that stretches that moves vertically; And
Position sensing apparatus is disposed in this hollow base frame, in order to the axial location of this lens barrel of sensing with respect to this hollow base frame.
2. piezo-electricity activation type optical lens according to claim 1, wherein, this camera lens body also has a lid, and this hollow base frame has an opening that is positioned at this unthreaded hole opposite side, for this lens barrel, mirror group, and piezo-activator are installed, and this lid of involution gives spacing whereby.
3. piezo-electricity activation type optical lens according to claim 1, wherein, this camera lens body also has first guidance part of being located in this hollow base frame and being parallel to this unthreaded hole axis direction, and this lens barrel outside is provided with the second relative guidance part, so as to guide this lens barrel in this hollow base frame along this unthreaded hole axle center axially-movable.
4. piezo-electricity activation type optical lens according to claim 3, wherein, this first guidance part comprises the guide rail of being located at the inner both sides of this hollow base frame, this second guidance part comprises that then correspondence is located at the guide groove of these lens barrel both sides.
5. piezo-electricity activation type optical lens according to claim 1, wherein, this camera lens body also comprises the wear-resisting portion that is located at the inner surface of this hollow base frame, and this piezo-activator is fixed in this lens barrel outside, and this wear-resisting of order and this piezo-activator keep in touch.
6. piezo-electricity activation type optical lens according to claim 5, wherein, this piezo-activator comprises piezoelectric stator and the prestressing apparatus that is fixed in this lens barrel outside, and makes this piezoelectric stator and this wear-resisting portion keep in touch.
7. piezo-electricity activation type optical lens according to claim 6, wherein, this prestressing apparatus comprises that one is disposed at the elastic parts between this piezoelectric stator and this lens barrel outside.
8. piezo-electricity activation type optical lens according to claim 6, wherein, this prestressing apparatus comprise be disposed at this lens barrel relatively away from the adjusting lever of this wear-resisting side, be fixed in this adjusting lever and the contact of rolling to the roller of this hollow base frame inner surface and provide this roller to contact prestressed elastic parts.
9. piezo-electricity activation type optical lens according to claim 8, wherein, this elastic parts is a spring.
10. piezo-electricity activation type optical lens according to claim 6, wherein, this lens barrel outside is provided with C type draw-in groove tightly to put this piezoelectric stator.
11. piezo-electricity activation type optical lens according to claim 1, wherein, this camera lens body also comprises the wear-resisting portion that is located at this lens barrel outside, and this piezo-activator is fixed in the inner surface of this hollow base frame, and this wear-resisting of order and this piezo-activator keep in touch.
12. piezo-electricity activation type optical lens according to claim 11, wherein, this piezo-activator comprises piezoelectric stator and the prestressing apparatus that is fixed in the inner surface of this hollow base frame, and makes this piezoelectric stator and this wear-resisting portion keep in touch.
13. piezo-electricity activation type optical lens according to claim 12, wherein, this prestressing apparatus comprises that one is disposed at the elastic parts between this piezoelectric stator and the inner surface of this hollow base frame.
14. piezo-electricity activation type optical lens according to claim 11, wherein, the inner surface of this hollow base frame is provided with C type draw-in groove tightly to put this piezoelectric stator.
15. piezo-electricity activation type optical lens according to claim 1, wherein, this camera lens body also comprises the wear-resisting portion that is located at this lens barrel outside, and this piezo-activator comprises and is fixed in this lens barrel outside relatively away from the prestressing apparatus of this wear-resisting portion and be fixed in the piezoelectric stator that the inner surface of this hollow base frame and this wear-resisting portion keep in touch.
16. piezo-electricity activation type optical lens according to claim 15, wherein, this prestressing apparatus comprise be disposed at this lens barrel relatively away from the adjusting lever of this wear-resisting side, be fixed in this adjusting lever and the contact of rolling to the roller of this hollow base frame inner surface and provide this roller to contact prestressed elastic parts.
17. piezo-electricity activation type optical lens according to claim 16, wherein, this elastic parts is a spring.
18. piezo-electricity activation type optical lens according to claim 15, wherein, the inner surface of this hollow base frame is provided with C type draw-in groove tightly to put this piezoelectric stator.
19. according to each described piezo-electricity activation type optical lens in the claim 5,11 and 15, wherein, this wear-resisting is slide rail.
20. piezo-electricity activation type optical lens according to claim 19, wherein, the material of this slide rail be selected from metal, oxide, and abrasion resistance material wherein one.
21. according to each described piezo-electricity activation type optical lens in the claim 6,12 and 15, wherein, this piezoelectric stator comprises a metal tube and two piezoelectric ceramic pieces.
22. piezo-electricity activation type optical lens according to claim 21, wherein, two piezoelectric ceramic pieces are fixedly arranged on the outside surface of this metal tube at interval.
23. piezo-electricity activation type optical lens according to claim 21, wherein, the number of plies of this piezoelectric ceramic piece is to be selected from wherein one of individual layer and multilayer.
24. piezo-electricity activation type optical lens according to claim 1, wherein, this camera lens body is the mirror group with many lens barrels and respective amount.
25. piezo-electricity activation type optical lens according to claim 24, wherein, this mirror group be comprise be selected from a slice optical mirror slip, and the eyeglass group wherein one.
26. piezo-electricity activation type optical lens according to claim 1, wherein, this position sensing apparatus is to be selected from optical profile type sensing apparatus, and electromagnetic type sensing apparatus wherein a kind of.
27. piezo-electricity activation type optical lens according to claim 1, wherein, this position sensing apparatus comprises the position reaction assembly that is fixed in this lens barrel outside and is fixed in the signal receiving assembly of this hollow base frame with received signal.
28. piezo-electricity activation type optical lens according to claim 1, wherein, this position sensing apparatus comprises the position reaction assembly that is fixed in this hollow base frame and is fixed in the signal receiving assembly of this lens barrel outside with received signal.
29. according to claim 27 or 28 described piezo-electricity activation type optical lens, wherein, this position reaction assembly is a reflective bar code and this signal receiving assembly is a sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610169232 CN101206297B (en) | 2006-12-20 | 2006-12-20 | Piezo-electricity drive type optical lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610169232 CN101206297B (en) | 2006-12-20 | 2006-12-20 | Piezo-electricity drive type optical lens |
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| CN101206297A true CN101206297A (en) | 2008-06-25 |
| CN101206297B CN101206297B (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610169232 Expired - Fee Related CN101206297B (en) | 2006-12-20 | 2006-12-20 | Piezo-electricity drive type optical lens |
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| CN (1) | CN101206297B (en) |
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| CN101969530A (en) * | 2009-07-27 | 2011-02-09 | 鸿富锦精密工业（深圳）有限公司 | Camera module |
| CN102365815A (en) * | 2009-03-31 | 2012-02-29 | 株式会社尼康 | Piezoelectric actuator and lens barrel |
| CN102749789A (en) * | 2011-04-22 | 2012-10-24 | 亚洲光学股份有限公司 | Focusing mechanism with multi-precision |
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| CN111435214A (en) * | 2019-01-11 | 2020-07-21 | 三赢科技（深圳）有限公司 | Camera module and electronic device with same |
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| US5587846A (en) * | 1994-07-15 | 1996-12-24 | Minolta Co., Ltd. | Lens moving apparatus |
| JP3352260B2 (en) * | 1994-12-27 | 2002-12-03 | キヤノン株式会社 | Lens drive |
| CN100362382C (en) * | 2002-06-05 | 2008-01-16 | 诺基亚有限公司 | Digital camera system with piezoelectric actuators |
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| CN102365815B (en) * | 2009-03-31 | 2015-09-23 | 株式会社尼康 | Piezo-activator and lens barrel |
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| CN102749789A (en) * | 2011-04-22 | 2012-10-24 | 亚洲光学股份有限公司 | Focusing mechanism with multi-precision |
| CN102798958A (en) * | 2011-05-27 | 2012-11-28 | 亚洲光学股份有限公司 | Focusing detection mechanism of lens |
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| US10146028B2 (en) | 2013-12-03 | 2018-12-04 | Bolymedia Holdings Co. Ltd. | Zoom/focus device and zoom lens |
| CN111435214A (en) * | 2019-01-11 | 2020-07-21 | 三赢科技（深圳）有限公司 | Camera module and electronic device with same |
| WO2021017181A1 (en) * | 2019-07-30 | 2021-02-04 | 南昌欧菲光电技术有限公司 | Camera module and lens assembly thereof, and mobile terminal |
| US12010429B2 (en) | 2019-09-12 | 2024-06-11 | Huawei Technologies Co., Ltd. | Camera module and mobile terminal |
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