CN1573278A - Encoder, lens apparatus and digital camera employing the same - Google Patents

Abstract

Provided is an encoder making it easy to keep a distance proper at all times between a magnetic sensor and a magnetic scale, a lens device equipped with the encoder, and a digital camera equipped with the lens device. Both a magnetic sensor holder 205 for holding the magnetic sensor 207 and an ultrasonic linear motor 100 for driving a moving mirror frame 19 are fixed to a metallic frame 23a. With one end thereof fixed to a scale holding part 115-1 of the mirror frame 19, the magnetic scale 210 is pressed by a dome-shaped projection part 206-3 of a leaf spring 206 from behind on its free-end side toward the magnetometric sensor 207 via smooth-surfaced nonmagnetic metallic foil 211 stuck on the back surface thereof. Because of this, a scale surface of the magnetic scale 210 relatively contact-moves while making sliding contact with a detection part 207-1 of the magnetic sensor 207, and the magnetic sensor 207 can correctly read the scale of the magnetic scale 210 at all times.

Description

Scrambler, lens devices and the digital camera that uses this lens devices

Technical field

The present invention relates to simple in structure and the scrambler that precision is high, the digital camera that uses the lens devices of this scrambler and use this lens devices.

Background technology

Patent documentation 1: the spy open the 2000-02559 communique ([summary], Fig. 1)

In the past, a kind of as in the scrambler of continuous detecting position had the position detecting device that utilizes magnetoresistive element.This position detecting device is owing to the precision height, be easy to the continuous detecting shift position, and can miniaturization, thereby is specially adapted to the detection of lens moving.

, utilize the position detecting device of this magnetoresistive element to have following problem: if the interval of keeping regulation between magnetoresistive element (Magnetic Sensor) and magnetic scale not, Magnetic Sensor just can not correctly read magnetic scale.

Therefore, proposed to have simple adjusting mechanism and the position detecting device of the certain intervals that can between Magnetic Sensor and magnetic scale, keep.(for example, with reference to patent documentation 1.)

Yet, adjusting mechanism in the position detecting device that discloses in the above-mentioned patent documentation 1, that between Magnetic Sensor and magnetic scale, keep certain intervals, it is extremely large-scale comparing with other mounting structures.Like this, if adjusting mechanism is large-scale, the lens devices that has then caused assembling this position detecting device maximizes, and, become the main cause that causes the lens devices cost high.

Summary of the invention

In view of above-mentioned actual conditions in the past, problem of the present invention provides a kind of be easy to correctly keep all the time scrambler at the interval of Magnetic Sensor and magnetic scale, the digital camera that has the lens devices of this scrambler and have this lens devices.

At first, the scrambler that utilizes magnetic to detect of invention 1 is characterised in that to have: Magnetic Sensor, and it is installed on the static component; Magnetic scale, one partial fixing and are configured to the state of scale face towards above-mentioned Magnetic Sensor on the mobile member that can move with respect to this Magnetic Sensor; And push the unit, it is installed on the above-mentioned static component, for the said scale face that makes this magnetic scale and the test section sliding contact of above-mentioned Magnetic Sensor, the part on the above-mentioned mobile member of not being fixed on of above-mentioned magnetic scale, from pushing of the opposition side of said scale face towards above-mentioned Magnetic Sensor.

Like this, because the scale face of magnetic scale is always pushed and sliding contact with it to the test section of Magnetic Sensor by pushing the unit, and magnetic scale contact with respect to Magnetic Sensor mobile, thereby, Magnetic Sensor always can correctly read magnetic scale, always can detect the tram.

Invention 2 is characterised in that in invention 1 described scrambler, the above-mentioned unit of pushing is made of laminated spring; On this laminated spring, on the position corresponding, be formed with the protuberance of opposite sides of the said scale face of the above-mentioned magnetic scale of crimping with the above-mentioned test section of above-mentioned Magnetic Sensor.

Like this, the pressing part of the laminated spring of pushing towards the test section of Magnetic Sensor as the scale of magnetic scale of pushing the unit is formed protuberance, since little with the contact area of the face of the opposition side of scale face, therefore can not produce big frictional resistance, thereby can reduce by the load of pushing generation.

And invention 3 is characterised in that, in invention 1 or 2 described scramblers, on the face of the opposition side of the said scale face of above-mentioned magnetic scale, is provided with the unit of reducing friction.In this case, invention 4 is characterised in that, in invention 3 described scramblers, the above-mentioned unit of reducing friction is the nonmagnetic metal thin slice that sticks on the face of opposition side of said scale face of above-mentioned magnetic scale.In addition, invention 5 is characterised in that, in invention 3 described scramblers, the above-mentioned unit of reducing friction is arranged on the resin bed on the face of opposition side of said scale face of above-mentioned magnetic scale.

Like this, owing to can further reduce by the load of pushing generation, and then can reduce the abrasion that cause by friction, thereby can make the life-span of scrambler keep permanent, can use cheap member to reduce cost simultaneously.

Secondly, the scrambler that utilizes magnetic to detect of invention 6 is characterised in that to have: Magnetic Sensor, and it is installed on the static component; Magnetic scale, one partial fixing and are configured to the state of scale face towards above-mentioned Magnetic Sensor on the mobile member that can move with respect to this Magnetic Sensor; And the pushing unit, it is installed on the face of opposition side of said scale face of this magnetic scale integratedly, pushes the movable part of above-mentioned magnetic scale, and it is contacted with above-mentioned Magnetic Sensor.

Invention 7 is characterised in that in invention 6 described scramblers, above-mentioned pushing unit is non magnetic resilient blade.Be characterised in that and invent 8 in invention 6 described scramblers, above-mentioned pushing unit is resinous elastic sheet.

And the scrambler that utilizes magnetic to detect of invention 9 is characterised in that to have: Magnetic Sensor, and it is installed on the static component; Mobile member, it moves with respect to above-mentioned static component; And magnetic scale, it is installed on the installation portion of this mobile member, and moves with respect to above-mentioned Magnetic Sensor.The above-mentioned installation portion of above-mentioned mobile member is keeping above-mentioned magnetic scale obliquely, and the part that makes above-mentioned Magnetic Sensor one side of being configured in of above-mentioned magnetic scale is than being installed in fixed part on this installation portion more near this Magnetic Sensor one side.

Like this,, make it near Magnetic Sensor one side because the maintaining part of magnetic scale keeps magnetic scale obliquely, thereby, even without the pressing member that magnetic scale is pushed to the Magnetic Sensor side etc., also can realize stable contact, it is simpler that structure becomes.

Secondly, the scrambler of invention 10 is characterised in that, the Magnetic Sensor of any one described scrambler in the invention 1 to 9 is fixedly installed on the assigned position of fixed component, this fixed component holds this mobile member in the mode that mobile member is free to slide, on the position corresponding with above-mentioned Magnetic Sensor, the magnetic scale of above-mentioned scrambler is fixed and is provided in the assigned position of above-mentioned mobile member, and above-mentioned magnetic scale is configured to from free-ended bearing of trend with the moving direction of the above-mentioned mobile member parallel state of fixed part to above-mentioned mobile member extension.

In addition, the lens devices of invention 11 is characterised in that to have invention 10 described scramblers; The mobile member of this scrambler is the mobile picture frame that keeps optical element, and same, fixed component is to take in the framework that this moves picture frame in the mode that above-mentioned mobile picture frame is free to slide.

In addition, invent 12 and be characterised in that, in invention 11 described lens devices, the above-mentioned magnetic scale of above-mentioned scrambler and above-mentioned Magnetic Sensor, with above-mentioned mobile picture frame being moved the driver element that drives, the superimposed lateral side that is configured in above-mentioned mobile picture frame.

In addition, invention 13 is characterised in that, in invention 11 or 12 described lens devices, also has the sensor that the absolute position detection of the absolute position of detecting above-mentioned mobile picture frame is used.

In addition, invention 14 is characterised in that in invention 11,12 or 13 described lens devices, above-mentioned driver element is with the ultrasonic linear motor of ultrasonic vibration element as drive source.

Like this, can realize small-sized, thin and the high lens devices of lens position precision.

And invention 15 digital camera is characterised in that, has in the invention 11 to 14 any one described lens devices as the photography lens devices.

Like this, be provided with small-sized, the thin and high digital camera of lens position precision small-sized, thin and the lens devices that the lens position precision is high in can realizing.

Description of drawings

Fig. 1 (a) and Fig. 1 (b) are the figure of schematic configuration that the digital camera of an embodiment is shown.

Fig. 2 is that A-A ' from the left side of the digital camera of embodiment lens devices that see, this digital camera is to the figure that looks section.

Fig. 3 is the exploded perspective view from the front side of the digital camera of embodiment lens devices that see, this digital camera.

Fig. 4 is the exploded perspective view from the rear side of the digital camera of embodiment lens devices that see, this digital camera.

Fig. 5 (a) changes the oblique view that direction is amplified the structure of the 1st fixed picture frame portion that illustrates an embodiment, and Fig. 5 (b) is the figure that sees from its bending optical axis direction.

Fig. 6 (a) is the exploded perspective view that is assembled in the member in the 1st fixed picture frame portion, and Fig. 6 (b) is the outboard profile that is assembled in the zoom usefulness motor unit in the 1st fixed picture frame portion equally.

Fig. 7 be illustrate zoom with the structure of motor unit and with the figure that engages (Department closes the The Ru) relation of axis cam.

Fig. 8 is the exploded oblique view of the aperture/shutter unit of an embodiment.

Fig. 9 (a) is the exploded perspective view of the ultrasonic linear motor of an embodiment, and Fig. 9 (b) is the oblique view that its assembling completion status is shown.

Figure 10 is the figure of electrode wiring of Vib. that the connection ultrasonic linear motor of an embodiment is shown.

Figure 11 (a) and Figure 11 (b) are the oblique views that the ultrasonic vibration to the Vib. of the ultrasonic linear motor of an embodiment schematically illustrates.

Figure 12 (a) is that the ultrasonic linear motor and the 3rd to an embodiment moves the oblique view that the method for attachment of picture frame describes, Figure 12 (b) is that illustrated oblique view is carried out in the leaf spring taking-up that will use in this connection, and Figure 12 (c) only takes out connecting portion to carry out illustrated oblique view.

Figure 13 (a) and Figure 13 (b) illustrate the oblique view that ultrasonic linear motor and the 3rd moves another method of attachment between the picture frame.

Figure 14 (a) and Figure 14 (b) illustrate the oblique view that ultrasonic linear motor and the 3rd moves the another method of attachment between the picture frame.

Figure 15 is that the detailed structure with the magnetic sensor unit of an embodiment moves picture frame together with ultrasonic linear motor and the 3rd and carries out illustrated exploded oblique view.

Figure 16 is the figure (1) of variation that the magnetic sensor unit of an embodiment is shown.

Figure 17 is the figure (2) of variation that the magnetic sensor unit of an embodiment is shown.

Symbol description

1: digital camera; 2: the photographic lens window; 3: the flashlamp illumination window; 4: release-push; 5: circuit board; 6: battery; 7: lens devices; 8: the 1 fixed lens portions; 9: the 1 mobile lens portions; 11: the 2 mobile lens portions; 12: the 3 mobile lens portions; 13: the 2 fixed lens portions; 14: imaging apparatus; L1: prism; L2, L9: fixed lens; L3, L4, L5, L6, L7, L8: mobile lens; 15: the 1 fixed picture frame portions; 15-1: notch; 16: the 2 fixed picture frame portions; Moved picture frame in 17: the 1; Moved picture frame in 18: the 2; 18-1: notch; Moved picture frame in 19: the 3; 19-1: notch; 19-2: jut; 21: aperture position (shutter position); 22: main fixed picture frame; 23 (23a, 23b, 23c): metal framework; 24: bonding agent accumulates portion; 25: the zoom axis cam; 25-1: the 1st cam path; 25-2: the 2nd cam path; 26 (26a, 26b): narrow footpath portion; 27: gear; 28: the bearing embedded hole; 29: bearing; 31: protuberance; 32: pushing (paying Potential) leaf spring; 32-1: clubfoot portion; 32-2: stop section; 32-3: pushing spring portion; 33: notch; 34: protuberance; 35: the zoom motor unit; 36: reducing gear train; 37: the gear shaft fixed part; 38: the check plate fixed part; 39: pilot hole; 41: stop hole; 42: aperture/shutter unit; 43: aperture/shutter portion; 44,45: rotary solenoid; 44-1,45-1: gap; 46: ultrasonic linear motor; 47: magnetic sensor unit; 48: the Magnetic Sensor retainer; 49: Magnetic Sensor; 51: magnetic scale; 52: the pushing spring; 53 (53-1,53-2,53-3): bearing portion; 54 (54-1,54-2,54-3): pilot hole; 55 (55-1,55-2,55-3): U word notch; 56: the leading section outside; 57: side surface part; 58: stage portion; 59: light reflecting member; 61 (61-1,61-2): cam follower; 62: light reflecting member; 63 (63-2,63-3): protuberance; 64 (64-1,64-2): axis of guide supported hole; 65: the 1 axis of guides; 66: compression spring; 67: axis of guide supported hole; 68: the 2 axis of guides; 69: peristome; 71: the optical sensor mounting hole; 72,73: optical sensor; 74: dead eye; 75: protuberance; 76: smooth side face; 77: Long Circle; 79 (79-1,79-2,79-3,79-4): protuberance; H, p: the face that contains the 2nd optical axis 02; 81: inclined plane part; 82: the small rectangle protuberance; 83: the otch slotted eye; 84: shadow shield; 85: notch; 86: motor; 87: output shaft 88: base plate; 88-1: installation portion; 88-2: mounting hole; 89: driven wheel; 91: idling gear; 92,94: the deceleration gear wheel in large diameter; 93,95: the deceleration small diameter gear; 96: base plate; 96-1: spring stop hole; 97: long-armed; 97-1: holding section 98: y-bend spring; 99: galianconism; 99-1: holding section; 100: ultrasonic linear motor; 101: Vib. (ultrasonic vibrator); 101-1: top; 101-2: following; 101-3 a: side; 102 (102-1,102-2): move (walking certainly) voluntarily and use contact site; 103 (103-1,103-2): the axis of guide; 104: the support portion; 104-1: base portion; 104-2: erect (upright establishing) portion; 105: the solid bearing hole; 106: long hole of shaft bearing; 107: protuberance; 108: volute spring; 109: the anti-avulsion pin; 111: the pin pickup groove; 112 (112A, 112B): the stacked portion of piezoelectrics; 113: the pin member; 114: the picture frame main body; 115: engaging protrusion portion; 115-1: scale maintaining part; 115-2: dip plane; 116: slotted hole 117: leaf spring; 117-1: main part; 117-2: card ends (Department and ends) portion; 117-3: pushing portion; 118: circular hole 119: slotted hole; 200: rigidity clamping (clamping promptly clips and supports) member; 200 ': resilient clamp members; 201,201 ': base portion; 202 (202-1,202-2): protuberance; 202 ' (202 '-1,202 '-2): protuberance; 203 (203-1,203-2): clamping part; 203 ' (203 '-1,203 '-2): clamping part; 204: elastic component; 205 (205-1,205-2): the Magnetic Sensor retainer; 206: leaf spring; 206-1: fastener; 206-2: spring portion; 206-3: protuberance; 207: Magnetic Sensor; 207-1: test section; 208: bonding agent; 209: contact conductor 210: magnetic scale; 210-1: fastener; 210-2: free end side; 211: the nonmagnetic metal paper tinsel; 212: resin bed 213: non magnetic resilient blade.

Embodiment

Below, with reference to accompanying drawing, embodiments of the present invention are described.And in the following description, the 1st fixed picture frame portion 15 surfaces that an above-mentioned interarea for example forms as one by metal framework 23a surface with this metal framework 23a etc. constitute, and another interarea relative with it is made of open surface.And above-mentioned optical element for example is made of prism L1, lens L2～L9 etc., and above-mentioned reflective optical devices is made of prism L1 etc.And above-mentioned forming section for example is made of the 15, the 2nd fixed picture frame portion 16 of the 1st fixed picture frame portion etc., and an above-mentioned side for example is made of metal framework 23b, and all the other sides relative with it are made of open surface.And above-mentioned the 1st ways for example is made of the 1st axis of guide 65 grades, and above-mentioned the 2nd ways for example is made of the 2nd axis of guide 68 grades.And above-mentioned the 1st ways support portion is for example by axis of guide supported hole 64 (64-1, formation such as 64-2), and above-mentioned the 2nd ways support portion is made of axis of guide supported hole 67 grades.

Fig. 1 (a) and Fig. 1 (b) are the figure of schematic configuration that the digital camera of an embodiment is shown, Fig. 1 (a) is the oblique view that illustrates from the outward appearance of seeing previously of digital camera, and Fig. 1 (b) is the oblique view of configuration status that the major part of digital camera inside is shown.

Shown in Fig. 1 (a), digital camera 1 upper right corner in front has photographic lens window 2, has flashlamp illumination window 3 at its left.And superincumbent left part is provided with release-push 4.

Shown in Fig. 1 (b), in the inside of digital camera 1, roughly occupy whole left 2/3, dispose control device that constitutes by the circuit board 5 that has assembled various electronic units and the battery 6 that can arbitrarily load and unload replacing etc.And, its right-hand roughly occupying in whole 1/3 the part, be equipped with the lens devices 7 of blocking.

7 pairs of the lens devices light beam from subject from the photographic lens window 2 of Fig. 1 (a) along camera axis 01 incidents shown in Fig. 1 (b) reflects, make its optical axis 01 approximate right angle bending downwards, the 2nd optical axis 02 described later after this bending downwards, above-mentioned incident beam guiding is provided in the imaging apparatus bottom, that for example constitute of lens devices 7, generates photographed images by CCD etc.

Fig. 2 be the A-A ' of lens devices 7 that see from the left of Fig. 1 of digital camera 1 (b), shown in Fig. 1 (b) to looking sectional drawing, it shows the schematic configuration of lens unit each several part.

As shown in Figure 2, in the inside of lens devices 7, the 2nd optical axis 02 after above-mentioned bending downwards has a plurality of lens, and these a plurality of lens are by constituting with the lower part: the 1st fixed lens portion 8 that is made of prism L1 and lens L2; The 1st mobile lens portion 9 that constitutes by lens L3 and lens L4; The 2nd mobile lens portion 11 that constitutes by lens L5, lens L6 and lens L7; The 3rd mobile lens portion 12 that constitutes by lens L8; And the 2nd fixed lens portion 13 that constitutes by lens L9.And, in the terminal configuration of these lens combination imaging apparatus 14 is arranged.

The prism L1 of above-mentioned the 1st fixed lens portion 8 above-mentioned from photographic lens window 2 along camera axis 01 incidents from the light beam of subject by roughly 90.Reflect bending downwards, it will change the prism of light beam travel path and common lens stickup and formation one along the 2nd optical axis 02, and prism L1 is kept by the 1st fixed picture frame portion 15 with lens L2 and is fixed in the lens devices 7.And above-mentioned the 2nd fixed lens portion 13 is kept by the 2nd fixed picture frame portion 16 and is fixed in the lens devices 7.

Above-mentioned the 1st fixed picture frame portion 15 and the 2nd fixed picture frame portion 16 form as one by ester moulding with the end of the long side direction of metal framework described later, and this metal framework is along roughly becoming the L font with section that the vertical face of the 2nd optical axis 02 is cut.

Between the 1st fixed picture frame portion 15 and the 2nd fixed picture frame portion 16, dispose: keep the 1st of above-mentioned the 1st mobile lens portion 9 to move picture frame 17; Keep the 2nd of the 2nd mobile lens portion 11 to move picture frame 18; And keep the 3rd of the 3rd mobile lens portion 12 to move picture frame 19.

The above-mentioned the 1st moves picture frame the 17, the 2nd moves that picture frame 18 and the 3rd moves picture frame 19 so that the 9, the 2nd mobile lens portion 11 of above-mentioned the 1st mobile lens portion and the 3rd mobile lens portion 12 can keep them respectively independently along the mode that is moved by the 2nd optical axis 02 after the bending of above-mentioned prism L1 approximate right angle.

Above-mentioned the 1st mobile lens portion 9 and the 2nd mobile lens portion 11 are provided with in order to change along the focal length of the light beam of the subject of the 2nd optical axis 02 incidents of the optical system of this lens devices 7.In other words, keeping the 1st of the 1st mobile lens portion 9 and the 2nd mobile lens portion 11 to move picture frame 17 and the 2nd moves picture frame 18 and is provided with for the zoom ratio of regulating lens combination.

And the 3rd mobile lens portion 12 is provided with for the focal position of regulating the imaging on imaging apparatus 14 of above-mentioned light beam.In other words, keeping the 3rd of the 3rd mobile lens portion 12 to move picture frame 19 is provided with picture frame as the focusing that can move freely on the 2nd optical axis 02 directions.

And, between above-mentioned the 1st mobile lens portion 9 and the 2nd mobile lens portion 11, be provided with aperture position (also being shutter position) 21.

And, this lens unit is for thickness (depth) attenuation as far as possible before and after making, the 1st fixed picture frame portion the 15, the 2nd that keeps containing the 11, the 3rd mobile lens portion 12 of the 8, the 2nd mobile lens portion of the 1st fixed lens portion of diameter bigger lens L2, L5, L8 is respectively moved picture frame 18, moves the side of fore-and-aft direction of the digital camera 1 on frame wall the 2nd optical axis 02 of picture frame 19 (in the example of Fig. 2 with the 3rd, the rear side of digital camera 1) part or all excision forms notch 15-1,18-1,19-1.

And, for and the part correspondingly picture frame of weakened shortcoming cut with the frame wall, as the 1st fixed picture frame 15, do not have the 2nd, the 3rd of other special reinforcing sections and move picture frame 18,19, clipping the 2nd optical axis 02 side relative with above-mentioned notch, be on the frame wall of front side, be provided with to the outstanding protuberance described later in outside.In the drawings, why the 2nd, the 3rd preceding side frame wall that moves the digital camera 1 of picture frame 18,19 looks thick slightly, is because show the section of raised part.

And, move picture frame 19 for the 3rd because it is thin down on the whole a little less than, might only utilize raised part fully not strengthen, thereby, jut 19-2 is set, make its from the phacoid installation portion of lens L8 around above the effective sunlight of lens L8 extraneous.

Fig. 3 is the exploded perspective view of the said lens device 7 seen from the front side of digital camera 1.

Fig. 4 is the exploded perspective view of the same said lens device 7 seen from the rear side of digital camera 1.

And, in above-mentioned Fig. 3 and Fig. 4, give the numbering identical with Fig. 2 to the structure division identical and illustrate with Fig. 1 with structure illustrated in figures 1 and 2.

As above-mentioned Fig. 3 and shown in Figure 4, lens devices 7 has main fixed picture frame 22.When having taken in Fig. 3 or whole inscape shown in Figure 4 in the inside and outside installation of this main fixed picture frame 22, integral body has formed the outer shape of apparatus main body, and this apparatus main body inscape of packing in the folded flat space on rectangular relative two interareas and between these two interareas forms.

Above-mentioned main fixed picture frame 22 forms at least one interarea of above-mentioned two interareas.In the structure of this lens devices 7, another interarea is open.By a side of the long side direction in the folded flat space of the interarea that forms with this metal framework 23a and open another interarea, also the metal framework 23b that becomes approximate right angle to be provided with continuously by the metal framework 23a from an interarea constitutes.

And a side of short side direction (among Fig. 3 and Fig. 4, the short side direction side of top) is also by becoming the continuous metal framework 23c that is provided with of approximate right angle to constitute respectively with the metal framework 23a of above-mentioned interarea and the metal framework 23b of long side direction side.

Like this, metal framework 23 (23a, 23b) constitute and the framework of the rectangular section of long side direction (also being the 2nd optical axis 02 directions after the above-mentioned bending), become the framework of the ideal structure that adopts small quantity of material formation rigidity for the L font formed by 1 side of 1 interarea and long side direction.

Injection mo(u)lding (outsert molding) is shaped to the fixedly forming section of one respectively with metal framework 23 on being formed with by metallic matrix on any end of the long side direction of this metal framework 23.These two fixedly forming section be the 1st fixed picture frame portion 15 and the 2nd fixed picture frame portion 16 that Fig. 2 also illustrates.

And, the 1st fixed picture frame portion 15 keep and the prism L1 that fixedly also illustrates among Fig. 2 and Fig. 3 and Fig. 4 in omitted illustrated lens L2.And the 2nd fixed picture frame portion 16 keeps and has fixedly omitted diagram among Fig. 3 and Fig. 4 and the lens L9 that illustrated among Fig. 2.

Between the 1st fixed picture frame portion 15 and the 2nd fixed picture frame portion 16, dispose 3 mobile picture frames also illustrating among Fig. 2 (the 1st move picture frame 17, the 2 move picture frame 18 and the 3rd move picture frame 19).

On these 3 mobile picture frames and above-mentioned two fixed picture frames, be formed with the bonding agent that keeps and fix each lens and accumulate portion 24 (with reference to Fig. 3).It is the minim gaps that form between lens side face of being fixed and picture frame that this bonding agent accumulates portion 24.

And the 3rd bonding agent portion of accumulating that moves picture frame 19 and the 2nd fixed picture frame portion 16 is blocked in the drawings and cannot see.And the back also will be told about the bonding agent portion of accumulating of the 1st fixed picture frame portion 15.

Before above-mentioned 3 the mobile picture frames of assembling, approach the long side direction side of open sides of main fixed picture frame 22 and the sidepiece of the 1st fixed picture frame portion 15, dispose zoom with axis cam 25.Zoom has with axis cam 25: have cam part cam path groove and form the large diameter part of side face, and from the narrow footpath 26 (26a of portion of the coaxial projection in two ends of large diameter part, 26b), on the narrow footpath 26a of portion on the end of the opposition side that is projected on imaging apparatus 14, be set with gear 27.

Zoom with axis cam 25 with a narrow footpath 26a of portion insert for the time being lead to the 1st fixed picture frame portion 15 with the incorporate fusion of metal framework 23c portion in the bearing embedded hole 28 that forms after, in drop-down, another narrow footpath 26b of portion is embedded in the dead eye that is blocked among the figure and forms in invisible the 1st fixed picture frame portion 15, a narrow footpath 26a of portion is engaged with bearing 29 in bearing embedded hole 28.Like this, zoom with axis cam 25 being supported by it with respect to the mode of the 1st fixed picture frame portion 15 rotation.

Be formed with the littler protuberance of diameter 31 at zoom with the jag of a narrow footpath 26a of portion of axis cam 25, when a narrow footpath 26a of portion engaged with bearing 29, this protuberance 31 was outside upward outstanding from bearing 29.By carrying out by pushing, be positioned at metal (upper on and stable keep with axis cam 25 zoom with 32 pairs of these protuberances 31 of pushing leaf spring.

Pushing leaf spring 32 is by constituting with the lower part: by cut channel a part from the main part in four directions roughly from and bending downwards, make its terminal horizontal bending again and 3 32-1 of clubfoot portion forming; The stop section 32-2 that the excision of main part central authorities is formed; And the pushing spring 32-3 of portion that is set to one from the main part extension.

On the other hand, in metal framework 23c one side, on the position corresponding, be formed with 3 notchs 33 with 3 32-1 of clubfoot portion of above-mentioned pushing leaf spring 32, in the substantial middle of surrounding, be formed with the corresponding protuberance 34 of stop section 32-2 with above-mentioned pushing leaf spring 32 by these 3 notchs 33.

If at 3 32-1 of clubfoot portion that make pushing leaf spring 32 with when 3 notchs 33 of metal framework 23c engage, the main part of pushing leaf spring 32 is gone into to metal framework 23c side pressure, then the end of stop section 32-2 is limited on the side face of protuberance 34, thereby, pushing leaf spring 32 is positioned on the outside of metal framework 23c, and zoom is positioned by pushing by the terminal part of this pushing spring 32-3 of portion with the protuberance 31 of axis cam 25.

Thus, zoom with axis cam 25 according to the promptly parallel direction of the long side direction of its central shaft and main fixed picture frame 22 with the 2nd optical axis 02, be configured in the prism L1 that keeps by the 1st fixed picture frame portion 15 near, and at least on direction of principal axis, its part is adjacent with side of prism L1.

Then, zoom is configured in by in the inclined-plane of the 1st fixed picture frame portion 15 of the reflecting surface dorsal part that keeps prism L1 and the spatial portion that roughly is the triangular prism shape that metal framework 23c forms with motor unit 35 (back will be told about in detail), and its reducing gear train 36 engages with the gear 27 of zoom with axis cam 25.By the retainer (with reference to Fig. 4) at gear shaft fixed part 37 and check plate fixed part 38 these two positions being fixed in the pilot hole 39 and stop hole 41 that is formed in the 1st fixed picture frame portion 15, this zoom is fixed in the 1st fixed picture frame portion 15 with motor unit 35 with screw.And, about above-mentioned reducing gear train 36 and zoom snap-fit relationship, will tell about in detail in the back with the gear 27 of axis cam 25.

Follow above-mentioned action, aperture/shutter unit 42 (with reference to Fig. 3) is installed on main fixed picture frame 22.Aperture/shutter unit 42 has: have the catoptrical aperture that limits by light quantity that forms the 2nd optical axis 02 and the aperture/shutter portion 43 of shutter; And respectively the aperture and the shutter of this aperture/shutter portion 43 carried out mechanically operated rotary solenoid 44 and 45.

Aperture/shutter portion 43 is configured on the aperture position shown in Figure 2 (shutter position) 21, and two rotary solenoids 44 and 45 are configured in the below of zoom with axis cam 25.About this aperture/shutter unit 42, will tell about in detail in the back.

And, below this aperture/shutter unit 42, will be used for moving picture frame 19 and move the ultrasonic linear motor 46 that drives and magnetic sensor unit 47 and be configured to the state that on the short side direction of main fixed picture frame 22, is superposed side by side the 3rd.

Thus, ultrasonic linear motor 46 is configured in shooting face one side (face side of apparatus main body, the i.e. side that in Fig. 1 (b) can see) of zoom with the position of the axle extending direction of axis cam 25.

Magnetic sensor unit 47 (with reference to Fig. 4) has Magnetic Sensor retainer 48, Magnetic Sensor 49, magnetic scale 51 and pushing spring 52.

And, about above-mentioned ultrasonic linear motor 46 and magnetic sensor unit 47, will tell about in more detail in the back.

Like this, after having disposed above-mentioned each member, move picture frame 18 and the 3rd and move picture frame 19 and assemble using the 1st of adhesive securement mobile lens portion shown in Figure 2 (9,11,12, Fig. 3 and Fig. 4 omit diagram) to move picture frame the 17, the 2nd respectively.

Then, 1st, the 2nd, the 3rd face that moves front and back lens maintaining part periphery, digital camera 1 (front and back of the lens devices 7 shown in Fig. 1 (b)) of picture frame 17,18,19 forms the plane with respect to the 2nd optical axis 02, like this, can realize being assembled in the slimming of the mobile picture frame in the lens devices 7.

And, in order further to realize slimming, the the 2nd, the 3rd picture frame rear portion of moving the maintenance lens of picture frame 18,19 (is equivalent to tiltedly upper left part among Fig. 3, the frame wall part that is equivalent to oblique bottom right among Fig. 4), corresponding with the smooth circumferential surface sections at lens rear portion carries out otch and forms notch 18-1,19-1 (with reference to Fig. 2, Fig. 3, Fig. 4), and the smooth circumferential surface sections at lens rear portion is exposed.

The 1st move picture frame the 17, the 2nd move picture frame 18 and the 3rd move picture frame 19 (with reference to Fig. 4) have respectively bearing portion 53 (53-1,53-2,53-3), in these bearing portions 53, be respectively arranged with pilot hole 54 (54-1,54-2,54-3).

And, move picture frame the 17, the 2nd the 1st and move picture frame 18 and the 3rd and move on the picture frame 19, on the end relative, have respectively with above-mentioned bearing portion 53 U word notch 55 (55-1,55-2,55-3).

And, on formed stage portion 58 on the border of the 1st leading section outside 56 (with reference to Fig. 3) that move picture frame 17 and the side surface part 57 that disposes above-mentioned bearing portion 53, light reflecting member 59 is disposed in stickup, and wherein leading section outside 56 is relative with the rearward end with above-mentioned bearing portion 53 and U word notch 55.

And, move extending upward on the part of setting of picture frame 18 in the 1st the part and the 2nd that moves picture frame 17 with the 53-2 of bearing portion one with the setting of the 53-1 of bearing portion integral transverse projection, be formed with respectively cam follower 61 (61-1,61-2).

And, erect at the 3rd that move picture frame 19 and the 53-3 of bearing portion integral transverse on the side of setting and be pasted with light reflecting member 62.

And, move picture frame 18 and the 3rd the 2nd and move on the picture frame 19, on the leading section relative outside with rearward end with above-mentioned bearing portion 53 and U word notch 55, be formed with the reinforcement usefulness that Fig. 2 illustrated protuberance 63 (63-2,63-3).

This protuberance 63 is to be provided with for the intensity that strengthens to making the said apparatus integral thinned excise the picture frame that the frame wall is short of.

And, pilot hole 54 interpolations at above-mentioned 3 mobile picture frames are connected with the 1st axis of guide 65, the two end supports of the 1st axis of guide 65 is at axis of guide supported hole 64 (64-1,64-2), (64-1 64-2) is formed on the open side separately and the immediate bight of opening interarea with the 1st fixed picture frame portion 15 and the 2nd fixed picture frame portion 16 this axis of guide supported hole 64.

Like this, the 1st, the 2nd and the 3rd move picture frame 17,18 and 19 (i.e. 3 mobile lens portions 9,11,12) with can be supported in the mode that optical axis shown in Figure 202 directions move.

And, by axis of guide supported hole a 64 (64-1 of support the 1st axis of guide 65,64-2) be formed on and open side and the immediate bight of opening interarea, make the 1st axis of guide 65 in lens devices 7 main bodys that form by main fixed picture frame 22, approach open side as far as possible and be configured with the most external that open interarea intersects.By by the 1st axis of guide 65 spring bearing portions 53 that so dispose near most external as far as possible, 3 mobile picture frames are configured in the inner and wasting space not of narrow flat apparatus main body.

When inserting logical the 1st axis of guide 65, move at the 1st 53-1 of bearing portion and the 2nd that moves picture frame 17 between the 53-2 of bearing portion of picture frame 18, have compression spring 66 by pushing force by outer embeddings and be contained on the 1st axis of guide 65.

And, before above-mentioned 3 the mobile picture frames of assembling, dispose the 2nd axis of guide 68, its two ends are supported by other two axis of guide supported holes 67 (with reference to Fig. 4), these other two axis of guide supported holes 67 be formed on the 1st fixed picture frame portion 15 and the 2nd fixed picture frame portion 16 separately by closing on side and the immediate position of opening interarea that metal framework 23b constitutes.

The 2nd axis of guide 68 is positioned at exit facet one side of the prism L1 that is kept by the 1st fixed picture frame portion 15, shown in the Fig. 5 (b) that describes in detail later, it is by axis of guide supported hole 67, be configured on the above-mentioned identical position, wherein, axis of guide supported hole 67 is formed in the drop shadow spread of exit facet direction of profile of prism L1 and outside the optics effective range of exit facet one side beam and near this optics effective range.

When above-mentioned 3 the mobile picture frames of assembling, above-mentioned U word notch 55 (55-1,2,3) laterally is being entrenched on above-mentioned the 2nd axis of guide 68, and after supporting in the mode that can be free to slide, by being that fulcrum makes each move picture frame to rotate to the inside with the 2nd axis of guide 68, being provided in the 1st and moving the cam follower 61 that picture frame 17 and the 2nd moves on the picture frame 18 and embed zoom with engaging in the cam path of axis cam 25 and with it in the mode that can be free to slide.

That is, with on the axis cam 25, be formed with respectively and the corresponding cam (cam path that engages with cam follower 61-1,61-2) of a plurality of picture frames (in this example the 1st move picture frame 17 and the 2nd move picture frame 18) at zoom.

And, meanwhile, the back side of the 1st leading section outside 56 (with reference to Fig. 3) that move picture frame 17 being approached to form the metal framework 23a of an interarea disposes, and moves the protuberance 63 that picture frame 18 and the 3rd moves the reinforcement usefulness that forms on the leading section outside of picture frame 19 the 2nd and is embedded in equally in the peristome 69 that is formed on the metal framework 23a.

For fear of to along with the 2nd move that picture frame 18 and the 3rd moves moving of picture frame 19 and the mobile lens that moves (the mobile generation with reference to the lens L5 of Fig. 2～L8) is disturbed, promptly in order to avoid the mobile of protuberance 63 counteracted, this peristome 69 forms the up and down long peristome corresponding with the shift motion of above-mentioned mobile lens.

Afterwards, above-mentioned the 1st axis of guide 65 is inserted led in each moves the axis of guide supported hole 64 at the pilot hole 54 of bearing portion 53 of picture frame and both ends.Like this, above-mentioned two axis of guides (65,68) and zoom with axis cam 25 adjacent and with the axle configured in parallel of zoom with axis cam 25.

Like this, because the mutual adjacent and configured in parallel of axis-shaped component, thereby help the miniaturization of device integral body.

3 mobile picture frames (17,18,19) support by these two axis of guides, be constrained to can about (optical axis 02 directions) slide, and forbid rotation around another axis of guide by an axis of guide, determine they with optical axis 02 rectangular directions on the position, they are configured in the main fixed picture frame 22.

And,, with compression spring 66 outer embeddings and be contained on the 1st axis of guide 65, move picture frame 17 and the 2nd with the 1st and move picture frame 18 and push to mutually opposite direction by moving at the 1st 53-1 of bearing portion and the 2nd that moves picture frame 17 between the 53-2 of bearing portion of picture frame 18.

Like this, be fastened on zoom each interior cam follower 61-1,61-2 of cam path of axis cam 25, be pressed towards the separately opposite side of zoom with the cell wall of the cam path of axis cam 25, therefore, when zoom uses the rotation of axis cam 25 to drive, the play that produces between cam path and the cam follower is eliminated, and like this, can correctly control when mobile and the position relation when mobile down.

In above-mentioned configuration, the 1st axis of guide 65 and zoom axis cam 25 almost parallels and disposed adjacent.

Afterwards, the imaging apparatus 14 that also illustrates in Fig. 2 is installed in below the 2nd fixed picture frame portion 16.And, with metal framework 23a be positioned at the face of the 1st fixed picture frame portion 15 on the one side be installed in the 1st and move on the corresponding position of light reflecting member 59 on the picture frame 17, be provided with optical sensor mounting hole 71, in this optical sensor mounting hole 71, dispose optical sensor 72.

The initial position of picture frame is moved in these optical sensor 72 detections the 1st.By zoom not being counted with the number of steps of the zoom motor of the stepper drive of motor unit 35 by making illustrated control device, detect the shift position, decide the 1st to move the displacement of picture frame to the initial position that this detected.

And, towards side one side of the opening of the 2nd fixed picture frame portion 16 be installed in the 3rd and move on the corresponding position of light reflecting member 62 on the picture frame 19, dispose another optical sensor 73.This optical sensor 73 is by detecting from being installed in the 3rd reflected light that moves the light reflecting member 62 on the picture frame 19, detects the 3rd initial position that moves picture frame 19.

Fig. 5 (a) changes direction the structure of the 1st fixed picture frame portion 15 parts of the 1st fixed lens portion 8 shown in Figure 2 of the maintenance in the said structure is amplified illustrated oblique view, and Fig. 5 (b) is the figure that sees from the face direction of its lens L2 (optical axis 02 directions).And, for ease of reference,, give the numbering identical and illustrate with Fig. 1 to Fig. 4 to the structure division that had illustrated.

Shown in Fig. 5 (a), in the 1st fixed picture frame portion 15, have and insert zoom that logical Fig. 3 also illustrates bearing embedded hole 28 with a narrow footpath 26a of portion of axis cam 25, has dead eye 74 simultaneously, another narrow footpath 26b of portion that 74 of this dead eyes support zoom with axis cam 25, it is blocked in Fig. 3 and cannot see.

And Fig. 5 (a) and Fig. 5 (b) illustrate the 1st fixed picture frame portion 15 that is configured as one with metal framework, and the diagram of metal framework is omitted.In addition, above the part of Fig. 3 and metal framework 23a shown in Figure 4 and 23b lays respectively in Fig. 5 (b) and on the right flank.

The 1st fixed lens portion 8, zoom axis cam 25 and zoom motor unit 35 etc. are installed in the 1st fixed picture frame portion 15.Wherein zoom makes the 1st, the 2nd to move picture frame 17,18 along the position relation is mobile according to the rules by the 2nd optical axis 02 after the prism L1 bending with axis cam 25, and it is the center rotation with axis cam 25 with its turning axle that zoom is used to make this zoom with motor unit 35.

At first, by the prism L1 (in Fig. 6 described later (a), carrying out detailed icon) in the 1st fixed lens portion 8 shown in Figure 2 of the 1st fixed picture frame portion 15 maintenances, be positioned by the part butt that does not hinder the optics effective range of the protuberance about the inner face that is arranged on the 1st fixed picture frame portion 15 75 with the prismatic reflection face, the part that does not hinder the optics effective range at the prism exit facet, by accumulate the bonding agent of filling in the gap that portion 24 forms at bonding agent, be adhesively fixed in the 1st fixed picture frame portion 15.

In order to realize the slimming of lens devices 7,, the excision of side face up and down of another lens L2 of being comprised in above-mentioned the 1st fixed lens portion 8 is formed smooth side face 76 along bending optical axis 02.Like this, lens L2 integral body forms Long Circle 77.

Except the shape of this Long Circle 77, the part of the maintenance lens L2 of the 1st fixed picture frame portion 15, corresponding with at least one side's (below among the figure) of the excision portion of the lens L2 that forms Long Circle 77 smooth side face 76 part forms notch 78 on the face parallel with optical axis 02.Like this, can realize the further slimming of lens devices 7.

And (79-3 79-4), keeps the circumferential part except that smooth side face 76 of the 8 interior lens L2 that comprised of the 1st fixed lens portion for 79-1,79-2 with the protuberance 79 that is arranged on 4 positions on the 1st fixed picture frame 15 inner faces.

Shown in Fig. 5 (b) (also with reference to Fig. 5 (a)), be arranged on the axis of guide supported hole 67 in the 1st fixed picture frame portion 15 in order to support the 2nd axis of guide 68, as mentioned above, together with being positioned at another outer axis of guide supported hole 67 of figure among Fig. 5 (b), be formed on constitute by metal framework 23b close the immediate position of side and opening interarea (among Fig. 5 (a), Fig. 5 (b) following).

And, like this, as can from Fig. 5 (a) find out, axis of guide supported hole 67 is positioned at exit facet one side (also being lens L2 one side) of the prism L1 that is kept by the 1st fixed picture frame portion 15, shown in Fig. 5 (b), be formed in the L1 ' of drop shadow spread of exit facet direction of profile of prism L1 and outside the optics effective range (with the positive same scope of oblong lens L2) of exit facet one side beam and near this optics effective range.

Therefore, the 2nd axis of guide 68 that is supported by above-mentioned relative two axis of guide supported holes 67 also is configured on the position same as described above.

And, be arranged on the axis of guide supported hole 64-1 in the 1st fixed picture frame portion 15 in order to support the Fig. 3 and the 1st axis of guide 65 shown in Figure 4, as mentioned above, in Fig. 5 (b), be positioned at figure outer be arranged on another axis of guide supported hole 64-2 in the 2nd fixed picture frame portion 16, be formed on and the relative open side of metal framework 23b and the immediate bight of relative opening interarea of metal framework 23a.

Therefore, the 1st axis of guide 65 that is supported by above-mentioned two relative axis of guide supported hole 64-1,64-2 also is configured on the position same as described above.

Like this, in other words, shown in Fig. 5 (b), can be the metal framework 23 that constitutes main fixed picture frame 22, the face (23a and 23b) that constitutes the L word shape with its section clips respectively and comprises by the face k of the optical axis 02 after the prism L2 bending or the state of p, is arranged on a side relative with the 1st axis of guide 65.

Fig. 6 (a) is the exploded perspective view that is assembled in the member in the 1st fixed picture frame portion 15, and Fig. 6 (b) is the outboard profile that is assembled in the zoom usefulness motor unit 35 in the 1st fixed picture frame portion equally.

Fig. 6 (a) illustrates among Fig. 5 and to be blocked by prism L1 and structure that bonding agent that the prism L1 of the opposite side inner side of invisible figure uses accumulates portion 24, protuberance 75 and other the 1st fixed picture frame portion 15 inner faces, and, remove lens L2, be illustrated in the bonding agent that unclear lens L2 uses among Fig. 5 and accumulate the protuberance 79 and the notch 78 at portion 24 and 4 positions.

And, in Fig. 6 (b), zoom motor unit 35 is shown with outboard profile, the side section of the 1st fixed picture frame portion 15 is shown.

Shown in Fig. 6 (a), the 1st fixed picture frame portion 15 has along the inclined plane part 81 of the reflecting surface of prism L1, and on this inclined plane part 81, the bottom of the protuberance of using with prism L1 75 is corresponding, on the position outside the optics effective range of the reflecting surface of prism L1, be provided with little rectangle protuberance 82.

And, in the gap that the zoom shown in Fig. 6 (b) is not had that the back side that is accommodated in inclined plane part 81 lavishly just had originally with motor unit 35 as the play space at the prism back side, as at the position surplus (escape げ) of zoom, be formed with the otch slotted eye 83 that is formed by otch at 3 positions with the bight, top of motor unit 35.

In order to prevent to enter the reflecting surface of prism L1 from this otch slotted eye 83, between the surface of inclined plane part 81 and the reflecting surface of prism L1 (dorsal part), shadow shield 84 is housed from behind harmful light.In the both side ends of shadow shield 84, be formed with the notch 85 that engages with raised part 82.Notch 85 constitutes the position surplus of protuberance 82, has the positioning function of shadow shield 84 simultaneously.

This routine zoom is made of stepping motor with the motor 86 of motor unit 35, and shown in Fig. 6 (b), motor 86 is approaching with inclined plane part 81, and it is configured in the opposition side (the play space at the back side) of prism L1 with respect to this inclined plane part 81.And, its output shaft 87 and the 2nd optical axis 02 configured in parallel.

Fig. 7 illustrates above-mentioned zoom is used the snap-fit relationship of axis cam 25 with structure and this zoom of motor unit 35 with motor unit 35 and zoom figure.And this figure is the figure that sees from the opposite side below of the figure of Fig. 6 (b), in other words, is the oblique view that only zoom is taken out and turns upside down and place with axis cam 25 with motor unit 35 and zoom.

As shown in Figure 7, with in the motor unit 35, on the side of the output shaft 87 that is provided with motor 86, base plate 88 is installed at zoom.On the two sides of base plate 88, be equipped with to constitute the rotation of motor 86 is passed to a plurality of gears of zoom with the gear train 36 of axis cam 25.

Gear train 36 is by constituting with lower gear: be installed in the driven wheel 89 on the output shaft 87 of motor 86; The idling gear 91 that directly meshes with this driven wheel 89, gear wheel in large diameter 92 with the 1st reduction gearing of this idling gear 91 engagements, constitute the small diameter gear 93 of the 1st reduction gearing with this gear wheel in large diameter 92, with the gear wheel in large diameter 94 of the 2nd reduction gearing of this small diameter gear 93 engagements, and with this gear wheel in large diameter 94 constitute the 2nd reduction gearing and with zoom with the direct small diameter gears 95 of engagement of the gear 27 of axis cam 25.

This zoom is with in the motor unit 35, have with the turning axle of zoom and be entrenched in the pilot hole that is arranged in the 1st fixed picture frame portion 15 with the 2nd reduction gearing of the gear 27 intermeshing small diameter gears 95 of axis cam 25, simultaneously, mounting hole 88-2 by the installation portion 88-1 that is provided with from base plate 88 approximate right angle bendings and projection is screwed this zoom in the 1st fixed picture frame portion 15 with motor unit 35.

Use in the motor unit 35 at this zoom, the gear wheel in large diameter 92 of the driven wheel 89 of output shaft 87, idling gear 91 and the 1st reduction gearing is configured in the same one side side of base plate 88, and the small diameter gear 93 of the 1st reduction gearing and the gear wheel in large diameter 94 of the 2nd reduction gearing and small diameter gear 95 are configured on the opposite face of the face with idling gear 91 is installed of base plate 88.

Promptly, in the gear train of forming by a plurality of gears that are installed on the base plate 88 36, with zoom with axis cam 25 (gear 27) directly meshed gears (small diameter gear 95 of the 2nd reduction gearing) be installed in and be equipped with in the gear train 36 with the gear (driven wheel 89) of the output shaft 87 base plate face that directly face of meshed gears (idling gear 91) is opposite on.

Like this, two sides at the base plate 88 of the driven wheel 89 that disposes the output shaft 87 parallel with the 2nd optical axis 02 disposes a plurality of reduction gearing, install at least one group of table the inside of crossing over base plate 88 of reduction gearing, and be positioned at the i.e. small diameter gear 95 of the 2nd reduction gearing of gear of final level of gear train 36 of face of the opposition side of base plate 88 with driven wheel 89, be meshing with each other with the gear on the axis cam 25 27 with the zoom that is arranged on the 2nd optical axis 02 configured in parallel, zoom is rotated with axis cam 25, thereby, be used for all can being made of spur gear to the gear train 36 of zoom with axis cam 25 transferring power, zoom shortens the thickness of 1 gear at least on the axle extending direction with the snap-fit relationship of axis cam 25 with motor unit 35 and zoom simultaneously.

Like this, the structure of zoom can be simplified, both snap-fit relationship can be in narrow as far as possible space, set up simultaneously with motor unit 35.

Along with the rotation of this zoom with the positive and negative both direction of the motor 86 of motor unit 35, zoom rotates to positive and negative both direction in the angle of specialized range with axis cam 25.Be fastened on by the cam follower 61-2 (with reference to Fig. 3) that makes the 1st cam follower 61-1 and the 2nd that moves picture frame 17 move picture frame 18 in the 1st cam path 25-1 and the 2nd cam path 25-2 of the periphery that is arranged at this zoom usefulness axis cam 25, along with of the rotation of above-mentioned zoom with axis cam 25, the 1st moves picture frame 17 and the 2nd moves picture frame 18 (i.e. the 1st mobile lens portion 9 and the 2nd mobile lens portion 11) and separates mobilely along the 2nd optical axis 02 directions, subject is looked like the zoom that dwindles/amplify.

Fig. 8 is the exploded oblique view of aperture/shutter unit 42.This figure be in Fig. 3 directly over roughly to the figure of aperture/shutter unit 42 of seeing.As shown in Figure 8, the rotary solenoid 44 of aperture/shutter unit 42 and 45 shell separately roughly form square, and its one side (among Fig. 8 following) is fixed on the base plate 96 in advance, and is fixed on the metal framework 23a by this base plate 96.

Rotary solenoid 44 is drive divisions that aperture is used, and has side from the gap 44-1 of its side along another rotary solenoid 45 and extends be provided with long-armed 97, and it makes this long-armed 97 angle rotation of scope according to the rules.

End long-armed 97, the holding section 97-1 that engages with the aperture device of aperture/shutter portion 43 is arranged to the pin shape by projection.Be carved with groove from this gap 44-1 of long-armed 97 to the outstanding root in outside, an end of y-bend spring 98 is sticked in this groove, and the other end card of y-bend spring 98 ends among the spring stop hole 96-1 on being arranged at base plate 96.

Since this y-bend spring 98 open pushing force, long-armed 97 always are urged and to the direction from bottom to top of figure, promptly are seen as counterclockwise direction from arrow a direction and rotate.Long-armed 97 the position that rotates up as shown in the figure is the position that the optical filter (not illustrating) that makes the aperture device that engages with it is avoided light path.

Another rotary solenoid 45 is drive divisions that shutter is used, have from the gap 45-1 of its side to the outside outstanding and with above-mentioned long-armed 97 galianconism that be arranged in parallel 99, it makes the angle rotation of scope according to the rules of this galianconism 99.

At the end of this galianconism 99, the holding section 99-1 that engages with the fast door open/close machine of aperture/shutter portion 43 also is arranged to the pin shape by projection.This illustrates galianconism 99 in direction from top to bottom, promptly is seen as the state that clockwise direction is rotated and stopped from arrow a direction.This position is to make the shutter of the fast door open/close machine that engages with it avoid the position of light path.

And, aperture/shutter portion 43 is installed on above-mentioned base plate 96.Like this, the drive division of the aperture device of aperture/shutter portion 43 engages with long-armed 97 holding section 97-1, and the drive division of the fast door open/close machine of aperture/shutter portion 43 engages with the holding section 99-1 of galianconism 99.

When aperture/shutter unit 42 was installed in metal framework 23a and goes up by base plate 96, aperture/shutter portion 43 was configured on the aperture position shown in Figure 2 21 between the 1st, the 2nd mobile lens portion 9,11.

Although make special diagram, in aperture/shutter unit 42, have: the shutter and the fast door open/close machine thereof that make the travel path switching of the light beam of on optical axis 02, advancing; Optical filter (the ND filter: neutral gray scale filter) of the light quantity of control directive shooting face; And the filter that this optical filter is advanced and retreat in the light beam travel path as aperture.

If the control device by circuit board 5 applies voltage to rotary solenoid 44, the pushing force of then long-armed 97 opposing y-bend springs 98 and downward direction is rotated, interlock therewith, the filter mechanism of aperture/shutter portion 43 enters in the light beam travel path optical filter, if stop to apply voltage, then long-armed 97 rely on the pushing force of y-bend springs 98 upwards to rotate as shown in the figure, interlock therewith, and filter mechanism is withdrawn into outside the light beam travel path optical filter.

If the control device by circuit board 5 applies the voltage of shutter close direction to rotary solenoid 45, then galianconism 99 upwards rotates, if stop to apply voltage, then keeps this state.Like this, close shutter and close the light beam travel path with the fast door open/close machine of the aperture/shutter portion 43 of galianconism 99 interlocks, and keep this state.

On the other hand, if the control device by circuit board 5 applies the voltage of shutter opening direction to rotary solenoid 45, then galianconism 99 rotates as shown in the figure, if stop to apply voltage, then keeps this state.Like this, open shutter and open light beam travel path with the fast door open/close machine of the aperture/shutter portion 43 of galianconism 99 interlocks, and keep this state.

Then, the ultrasonic linear motor that the 3rd picture frame that drives the 3rd mobile lens portion 12 that keeps focusing usefulness is moved describes.

Fig. 9 (a) is the exploded perspective view of the ultrasonic linear motor that uses in this example, and Fig. 9 (b) is the oblique view that its assembling completion status is shown.Shown in Fig. 9 (a) and Fig. 9 (b), ultrasonic linear motor 100 at first has: make rectangular Vib. (ultrasonic vibrator) 101; And with two relative up and down faces of this Vib. 101 on respectively with a plurality of (in the legends each two) of Vib. 101 forms as one or bonding split forms shape for lugs move voluntarily with contact site 102 (102-1,102-2).

Above-mentioned ultrasonic linear motor 100 also has: across Vib. 101 move voluntarily with contact site about in the of 102 clamping Vib. 101 and guide two axis of guides 103 that this Vib. 101 moves (103-1,103-2); And the support portion 104 that these axis of guides is positioned and prop up support integral.

On support portion 104, on the top that is set to the rising portions 104-2 of one from the two ends of base portion 104-1 respectively with base portion 104-1, be formed with last axis of guide 103-1 in above-mentioned two axis of guides 103 that are adhesively fixed and the solid bearing hole 105 that supports respectively, thereunder be formed with so that the mode that following axis of guide 103-2 can freely swing supports the long hole of shaft bearing 106 of this axis of guide.

And, on the outer bottom nearby of the both ends of the base portion 104-1 of support portion 104, on the position corresponding with inserting the following axis of guide 103-2 lead in the long hole of shaft bearing 106, be respectively arranged with protuberance 107, this protuberance 107, although do not see Chu in the drawings, yet be seen as interior sky, in this inside, maintain volute spring 108 from the top.

And, nearby will descend axis of guide 103-2 upward push to the upper end of the outstanding volute spring 108 in outside top at the both ends of following axis of guide 103-2 from inside.Like this, following axis of guide 103-2 is with last axis of guide 103-1, and the oscillating movement described later of the Vib. 101 of dependence clamping and the pushing force of volute spring 108 in the mode that can swing up and down, are supported by long hole of shaft bearing 106.

In order to prevent that this following axis of guide 103-2 that can freely swing from coming off and deviate from from long hole of shaft bearing 106, hold the both ends butt of the following axis of guide 103-2 of slotted hole 106 with slotting axis, dispose anti-avulsion pin 109, this anti-avulsion pin 109 is adhesively fixed on its both ends in the pin pickup groove 111 in the peristome outside that is formed at long hole of shaft bearing 106.

Above-mentioned Vib. 101 relies on its peculiar oscillating movement described later and moves the effect of using contact site 102 and two axis of guide 103-1,103-2 voluntarily, in the direction of being represented by four-headed arrow b parallel with 103-2 with axis of guide 103-1 shown in Fig. 9 (b), it is mobile to advance and retreat between the rising portions 104-2 at two ends.

Above-mentioned moving voluntarily with contact site 102, with the surface of contact of the 1st and the 2nd axis of guide 103 on, according to the curvature roughly the same with the radius of the 1st and the 2nd axis of guide 103, be provided with curved notch, move like this, voluntarily with contact site 102 only be limited carry out along the direction of the 1st and the 2nd axis of guide 103 mobile voluntarily.

As mentioned above, this routine ultrasonic linear motor 100 shown in this Fig. 9 (b) is self-portable structures that Vib. 101 self can move voluntarily.Below the structure of this Vib. 101 is carried out simple declaration.

Figure 10 is illustrated in to omit the illustrated figure that is connected to the electrode wiring of Vib. 101 among Fig. 9 (a) and Fig. 9 (b).And in Figure 10, the direction of Vib. 101 and the situation shown in Fig. 9 (a) and Fig. 9 (b) turned upside down to be illustrated.

Although diagram especially, in the inside of the Vib. 101 shown in this figure, (112A, 112B), like this, Vib. 101 forms rectangular shape to transversely arranged stacked 112 of two piezoelectrics that dispose prism shape on the whole.

Though omitted the detailed structure of each piezoelectrics stacked 112, but its structure is as follows: will apply thin rectangular shape shape that internal electrode handles, being carried out stacked by for example PZT (lead zirconate titanate) etc. as the piezoelectric body layer of material formation a plurality of, stacked initial and last, with the mode of these a plurality of stacked piezoelectric body layers of clamping, the stacked insulator layer that does not apply electrode.

The most external insulator layer that on the stacked direction of these piezoelectric body layers, forms, form among Fig. 9 (b) by two axis of guides 103 across two opposite faces that move voluntarily with the Vib. 101 of contact site 102 clampings, i.e. a relative up and down face 101-1 and another side 101-2 among Figure 10.

And, other side that piezoelectrics are stacked 112, be in Fig. 9 (b), also covering of Vib. 101 by the appropriate insulation layer with the parallel and not relative face of two axis of guides 103 and with the face of the bearing of trend quadrature of two axis of guides 103 with the axis of guide 103.

And, on Vib. 101, with two parallel and not relative sides of above-mentioned two axis of guides 103 with the axis of guide 103 on the side 101-3 shown in Figure 10, also be provided with external electrode terminals A+, A-, B+, B-at 4 positions on its surface.These external electrode terminals A+, A-, B+, B-are connected with the internal electrode of each piezoelectric body layer that has applied above-mentioned internal electrode processing respectively, and electrode terminal A+ constitutes A electrode mutually with A-, and electrode terminal B+ constitutes B electrode mutually with B-.

The driving voltage that utilization applies to these external electrode terminals A+, A-, B+, B-from control device, ultrasonic elliptically vibrating described later takes place in Vib. 101.

At the face of the stacked direction of stacked 112 of above-mentioned piezoelectrics, be to form the above-mentioned of shape for lugs on each two positions of two faces of the face 101-1 that constitutes by above-mentioned insulator layer of Vib. 101 and another side 101-2 to move voluntarily with contact site 102, be set at the optional position of the output characteristics of the maximum level that can obtain Vib. 101 respectively, promptly carry out the position of ultrasonic elliptically vibrating of the maximum level described later of Vib. 101.

And, in a side 101-3 of Vib. 101, central portion at Vib. 101, promptly in 1 time following compressional vibration and 2 each vibration modes of flexural vibrations common static point near (in this example this part being expressed as " joint "), the pin member 113 that usefulness is obtained in the mobile output of Vib. 101 is fixed on the 101-3 of side, and roughly at right angles projection configuration.

Like this, from Vib. 101 described later when the 3rd moves picture frame 19 and transmits displacing forcies, can not give the vibration transfer of Vib. 101 the 3rd not move picture frame 19 and cause waste, move picture frame 19 and can only pass to the 3rd to displacing force (mobile voluntarily driving force).

And the pin member 113 of usefulness is obtained in above-mentioned mobile output, so long as section is circular, square and other arbitrary shape and the hollow or solid member with rigidity, and can with what formation.

Like this, owing to make the shape and the characteristic on the material of transmission member of the driving force that picture frame moves simple, thereby can reduce manufacturing cost and install easily.

Figure 11 (a) and Figure 11 (b) are the oblique views that the ultrasonic elliptically vibrating to above-mentioned Vib. 101 schematically illustrates.At first, if to the A of Vib. shown in Figure 10 101 phase electrode and B mutually electrode to apply same-phase and frequency be alternating voltage about 160kHz, then be energized in the Vib. 101 and carry out 1 compressional vibration.And, if to above-mentioned A phase electrode and B mutually electrode to apply antiphase and frequency be alternating voltage about 160kHz, then be energized in the Vib. 101 and carry out 2 flexural vibrations.

If use finite element method (FEM) that Computer Analysis is carried out in these vibrations, then can be contemplated to the resonance compressional vibration state shown in Figure 11 (a) respectively, and the resonance flexural vibrations state shown in Figure 11 (b).And the result that ultrasonic vibration is measured has confirmed these anticipations.

Move voluntarily across 4 by the compressional vibration of these Vib.s 101 and the synthetic elliptical vibration of flexural vibrations and to act on two axis of guides 103 with contact site 102, as its retroaction, Vib. 101 is along two axis of guides 103, and advance and retreat move between two rising portions 104-2 of support portion 104.The principle of work of Here it is ultrasonic linear motor of the present invention.

; in the ultrasonic linear motor 100 shown in Fig. 9 (a) and Fig. 9 (b); shown in above-mentioned Figure 11 (a), Figure 11 (b); following axis of guide 103-2 in two axis of guides 103 up and down that move the Vib. 101 vibrate with contact site 102 clampings voluntarily; support but fixing by the long hole of shaft bearing 106 of support portion 104; its both ends suppress shake at left and right directions by long hole of shaft bearing 106; and above-below direction by volute spring 108 from lower support, and can in the scope of long hole of shaft bearing 106, swing.

Therefore, particularly work as Vib. 101 up and down between the axis of guide 103, with any support portion 104 side joints when near, the axis of guide 103 not parallel relatively (not having the interval of Vib. 101 1 sides to narrow down a little) up and down, accompany therewith, moving voluntarily with in the contact site 102, contact site is used in moving voluntarily of occurring sometimes not contacting with the axis of guide 103.

Yet, so separate with the part of contact site 102 even move voluntarily sometimes with the axis of guide 103, for the shift action of Vib. 101, there is not the problem of essence yet.For example, 4 move voluntarily with contact site 102 (below, with reference to Fig. 9 (b)), between two support portions 104, be near the center of moving movement scope of Vib. 101,4 are moved usefulness contact site 102 voluntarily and all contact with two axis of guides 103, and when Vib. 101 moves to left end, sometimes moving voluntarily with contact site 102-2 of lower-left is in the state that floats a little from following axis of guide 103-2, when Vib. 101 moved to right-hand member, moving voluntarily with contact site 102-2 of bottom right was in the state that floats a little from following axis of guide 103-2 sometimes.

In this case, (bottom right when left end) of not floating moved voluntarily to contact with following axis of guide 103-2 with contact site 102-2 and carried out elliptical vibration, becomes the displacing force source of Vib. 101.Therefore, if two or three contact with the axis of guide 103 up and down arbitrarily, then move the displacing force that can obtain Vib. 101 with contact site 102 voluntarily.

Figure 12 (a) is the oblique view that above-mentioned ultrasonic linear motor 100 and the 3rd method of attachment of moving picture frame 19 are described, Figure 12 (b) is that illustrated oblique view is carried out in the leaf spring taking-up that will use in this connection, and Figure 12 (c) only takes out connecting portion to carry out illustrated oblique view.

And Figure 12 (a) is that ultrasonic linear motor 100 and the 3rd moves the figure that picture frame 19 is seen from the left summary oblique upper of Fig. 4.And, in the following explanation of Figure 12 (a) and (b), (c), when expressing up and down all around direction, be not meant Fig. 4 and be meant the direction shown in Figure 12 (a) and (b), (c).And for the ease of understanding, Figure 12 (a) will insert logical and be fixed on mediad pin that pin parts 113 that inner mobile output obtains usefulness set firmly face from the pin of the oblique upper left opposite side of Vib. 101 and set firmly the face side and extract and illustrate.

Shown in Figure 12 (a), the 3rd moves picture frame 19 by constituting with the lower part: the picture frame main body 114 and the 53-3 of bearing portion that keep the 3rd mobile lens portion 12; And from the 53-3 of this bearing portion engaging protrusion portion 115 that is provided with of projection downwards.Substantial middle portion in engaging protrusion portion 115 is being equipped with long slotted hole 116 with promptly parallel with the 2nd optical axis 02 direction of the moving direction of picture frame main body 114.

Be pressed to and the 3rd move the leaf spring 117 at the position (slotted hole 116 of engaging protrusion portion 115) of picture frame 19 butts moving pin parts 113 that output obtains usefulness, be fastened in this slotted hole 116 by opposite side from figure.

Leaf spring 117 is by constituting with the lower part: flat main part 117-1; Be bent into 2 sections fastener 117-2 to front and top from the below of this main part 117-1; And from the left side of main part 117-1 to the 117-3 of pushing portion of front bending.

The fastener 117-2 of this leaf spring 117, with from opposite side around the mode of going into, clamp the 3rd bottom of moving the engaging protrusion portion 115 that is formed with slotted hole 116 of picture frame 19, card ends in engaging protrusion portion 115.Like this, the opposite side opening surface driving fit of the main part 117-1 of leaf spring 117 and slotted hole 116 is inserted into assigned position in the slotted hole 116 to the 117-3 of pushing portion from opposite side.

Between the left part of 117-3 of pushing portion and slotted hole 116, be formed with and insert the logical gap that the pin member 113 of usefulness is obtained in output of moving just.

Move between the face of front face side of the side of opposite side of picture frame main body 114 of picture frame 19 and engaging protrusion portion 115 the 3rd, be formed with the space of lucky configuration ultrasonic linear motor 100.When having disposed ultrasonic linear motor 100 in this space, it moves the pin member 113 that usefulness is obtained in output, shown in Figure 12 (c), inserts in the gap that leads between the left part that is formed at 117-3 of pushing portion and slotted hole 116.

By this engaging, the pin member 113 that usefulness is obtained in mobile output is under an embargo in slotted hole 116 and moves to the 2nd optical axis 02 directions, moves up and down and then admits of play.

By this play, position deviation in the time of can absorbing the installation of Vib. 101 and two axis of guides 103 etc.

And, thus, direction that the pin member 113 that usefulness is obtained in mobile output moves Vib. 101 to the 2nd optical axis 02 directions and power correctly pass to the 3rd and move picture frame 19, on the other hand, absorb by moving up and down of causing of the elliptical vibration of Vib. 101 by moving up and down in the slotted hole 116, do not move picture frame 19 and do not pass to the 3rd, thereby when focus adjustment, the subject picture can not rock.

Like this, in this example, in Vib. 101 and the 3rd moves connection between the picture frame 19, form fixing by Vib. 101 on the one hand, on the other hand, the state that the pin parts 113 that obtain usefulness by mobile output connect wherein moves the pushing force of exporting the pin parts 113 dependence leaf springs 117 that obtain usefulness and only is connected to and the 3rd position (slotted hole 116 of engaging protrusion portion 115) of moving picture frame 19 butts, like this, the displacing force of Vib. 101 (driving force) is passed to the 3rd and move picture frame 19.

Figure 13 (a) and Figure 13 (b) illustrate ultrasonic linear motor 100 (Vib. 101) and the 3rd to move the oblique view of another method of attachment between picture frame.Shown in this figure (a), move in the engaging protrusion portion 115 of picture frame 19 the 3rd, be formed with circular hole 118 and slotted hole 119 along the arrangement of the 2nd optical axis 02 directions.

In this example, prepared to replace the rigidity clamping components 200 of the monomer of pin member 113 that above-mentioned mobile output obtains usefulness and leaf spring 117.Rigidity clamping components 200 is by constituting with the lower part: rectangular plate-like base 201; The protuberance 202 that forms at two positions, the back side of this base portion 201 (202-1,202-2); And from the both ends of the left and right sides long side direction of base portion 201 to the front roughly projection be set to the right angle clamping part 203 (203-1,203-2).On the inner face of clamping part 203, be pasted with the elastic component 204 that for example constitutes respectively by silicon rubber etc.

The protuberance 202-1 of rigidity clamping components 200 is embedded in the circular hole 118 of engaging protrusion portion 115 and is positioned, and protuberance 202-2 is embedded in the slotted hole 119 and the rotation that is under an embargo, and is fixed by bonding.

When in being formed at the 3rd gap of moving between the face of front face side of the side of opposite side of picture frame main body 114 of picture frame 19 and engaging protrusion portion 115, having disposed ultrasonic linear motor 100, shown in Figure 13 (b), with clamping part 203 across the elastic component 204 that sticks on its inner face, above-mentioned rigidity clamping components 200 clips two external surface 101-5 and the 101-6 with direction of travel (moving direction) quadrature of Vib. 101, Vib. 101 and the 3rd is moved picture frame 19 be connected.

Like this, rigidity clamping components 200 is by elastic component 204 clamping Vib.s 101, thus, in this case, the position deviation in the time of also can absorbing the installation of above-mentioned Vib. 101 and two axis of guides 103 etc.And, thus, prevent to apply unnecessary external force, so that the vibration characteristics of Vib. 101 is not affected.

And the clamping part 203 of rigidity clamping components 200 enters between two axis of guide 103-1 of configured in parallel of ultrasonic linear motor 100 and the 103-2 and forms the state that clips Vib. 101.

Like this, adopt structure shown in Figure 13, also can pass to the 3rd to the displacing force voluntarily (displacing force) of the Vib. 101 of ultrasonic linear motor 100 and move picture frame 19.And, in the figure, rigidity clamping components 200 and the 3rd is moved picture frame 19 separate and illustrate, yet be not limited thereto, also can move picture frame 19 to the 3rd and rigidity clamping components 200 constitutes one.

Figure 14 (a), Figure 14 (b) illustrate ultrasonic linear motor 100 (Vib. 101) and the 3rd to move the oblique view of the another method of attachment between the picture frame 19.The structure of engaging protrusion portion 115 that shown in Figure 14 (a) the 3rd moves picture frame 19 is identical with the situation of Figure 13 (a).And, in this example, replace rigidity clamping components 200 and use resilient clamp members 200 '.

The base portion 201 ' of resilient clamp members 200 ', protuberance 202 ' (202 '-1,202 '-2), clamping part 203 ' (203 '-1,203 '-2) etc. are whole to be formed by elastic component.Therefore, the inner face in clamping part 203 ' (203 '-1,203 '-2) there is no need as the situation of Figure 13, pastes elastic component 204.

As the elastic component that forms above-mentioned resilient clamp members 200 ', for example can use polyester elastomer etc.

Adopt like this to constitute, also can pass to the 3rd to the displacing force voluntarily (displacing force) of the Vib. 101 of ultrasonic linear motor 100 and move picture frame 19.

And, if Vib. 101 move the structure that drive transmitting member that picture frame 19 transmission drives is made Figure 13 or clamping components shown in Figure 14 to the 3rd, then have and need not to carry out moving the advantage that pin member 113 that output obtains usefulness is installed in the machining on the Vib. 101.

And, in above-mentioned Figure 13 and Figure 14, all Vib. 101 is carried out resilient clamp, yet when when the stop position to the moving body that driven by ultrasonic linear motor 100 (in this example be the 3rd move picture frame 19) does not require high precision, even it is between clamping components and Vib., have plurality of gaps, also no problem.In this case, clamping components not necessarily need be made of elastic component.

Figure 15 is that the detailed structure with Fig. 3 and magnetic sensor unit 47 shown in Figure 4 moves picture frame 19 together with the ultrasonic linear motor 100 and the 3rd that this magnetic sensor unit 47 is installed and carries out illustrated exploded oblique view.

This magnetic sensor unit 47 be for make optical sensor shown in Figure 3 73 detect the 3rd move the initial position of picture frame 19 after, the 3rd displacement that moves picture frame 19 that begins from this initial position detected be provided with.

As shown in figure 15, above-mentioned ultrasonic linear motor 100, as Figure 12 and illustrated in fig. 13, be configured in the 3rd and move between the side and engaging protrusion portion 115 of picture frame main body 114 of picture frame 19.And in Figure 15, (205-1 205-2) is fixed on the metal framework 23a together with Magnetic Sensor retainer 205 for ultrasonic linear motor 100.

The fastener 206-1 card of leaf spring 206 is ended on the 205-1 of transverse plane portion of Magnetic Sensor retainer 205, by the vertical planar portions 205-2 maintenance Magnetic Sensor 207 of Magnetic Sensor retainer 205.In Magnetic Sensor 207, be formed with the test section 207-1 that is used to detect magnetic in substantial middle portion.And, draw 4 contact conductors 209 from the top of test section 207-1, this 4 contact conductors 209 use bonding agents 208 to strengthen and being electrically connected of Magnetic Sensor 207.

And, the fastener 210-1 of magnetic scale 210 is bonded to scale maintaining part 115-1, wherein scale maintaining part 115-1 from the engaging protrusion portion 115 that upwards erects (representing with the shape that erects because the direction seen turns upside down) by the 3rd 53-3 of bearing portion that moves picture frame 19 downwards at Figure 12 to Figure 14 further according to the rules step laterally (the oblique lower right of Figure 15 to) stretch out and form planar portions, like this, magnetic scale 210 with the scale face towards the test section 207-1 of Magnetic Sensor 207 and be fixed on the scale maintaining part 115-1.

This magnetic scale 210 is made of resin system thin slices such as rubber-like sheeting, for example polyester, applies magnetic in scale face one side, and this magnetic is magnetized according to certain intervals.In order to make Magnetic Sensor 207 read this magnetic, preferably, the scale face of magnetic scale 210 and the test section 207-1 of Magnetic Sensor 207 are always approaching as far as possible.

This magnetic scale 210 is fixedly mounted on the 3rd by scale maintaining part 115-1 and moves on the picture frame 19, and Magnetic Sensor 207 is fixed on the metal framework 23a, the 3rd moves picture frame 19, as mentioned above, along two axis of guides (65,68) be configured in movably on this metal framework 23a, thus, Magnetic Sensor 207 and magnetic scale 210 also be configured to relatively-movable state.

As shown in figure 15, constitute the magnetic scale 210 and above-mentioned Magnetic Sensor 207 of scrambler, together with moving ultrasonic linear motor 100 laminated configuration that picture frame 19 moves driving in the 3rd sidepiece one side that moves picture frame 19 to the 3rd.

And, as mentioned above, the position of ultrasonic linear motor 100 and scrambler relation is: ultrasonic linear motor 100 be provided in the 3rd move the picture frame main body 114 of picture frame 19 and dispose pin member 113 and the engaging protrusion portion 115 of connecting elements such as leaf spring 117 between, Magnetic Sensor 207 is configured to and the 2nd optical axis 02 almost parallels in the 3rd outside of moving the engaging protrusion portion 115 of picture frame 19.Thus, but the miniaturization of propulsion plant.

At the back side of above-mentioned magnetic scale 210, as shown in figure 15, preferably be pasted with ganoid nonmagnetic metal paper tinsel 211.The magnetic scale 210 that is pasted with this metal forming 211 is fixed on the scale maintaining part 115-1 by its fastener 210-1.

And leaf spring 206 has from fastener 206-1 and descends downwards and cross out into the 206-2 of spring portion of hook-type, is formed with the protuberance 206-3 to the dome shape of magnetic scale 210 lateral processes in the end of the 206-2 of spring portion.This protuberance 206-3 is formed on the position corresponding with the test section 207-1 of Magnetic Sensor 207.

The fastener 206-1 of this leaf spring 206 is fixed on the metal framework 23a with Magnetic Sensor retainer 205-1, thus, will not to be fixed on the part on the fastener 210-1 of magnetic scale 210 be that free end side 210-2 pushes by the test section 207-1 of metal forming 211 to Magnetic Sensor 207 to the protuberance 206-3 of leaf spring 206.

Like this, the scale face of magnetic scale 210 with the relatively moving when test section 207-1 slips of Magnetic Sensor 207.

Thus, the scale by making magnetic scale 210 contacts mobile towards the test section 207-1 of Magnetic Sensor 207, and Magnetic Sensor 207 can more correctly read the scale of magnetic scale 210.

And, form by the protuberance 206-3 of dome shape owing to push the part of leaf spring 206 at the back side of scale face across metal forming 211, thus can make with the frictional resistance of metal forming 211 minimum, thereby, can reduce by the drag loading of pushing generation.

And, as mentioned above, owing to pasted ganoid nonmagnetic metal paper tinsel 211 at the back side that is pressed of scale face, thereby can keep long device lifetime suppressing very lowly with the caused abrasion of the friction of leaf spring 206.

Figure 16 is the figure that the variation of above-mentioned magnetic sensor unit is shown.The metal forming 211 that paste at the back side of the scale face of the magnetic scale 210 that magnetic sensor unit replacement shown in Figure 16 is shown in Figure 15, and form resin bed 212 at the back side of scale face.Resin bed 212 for example can be formed by fluorine resin etc.Because the general smooth surface of resin, frictional resistance is few, and sliding is good, thereby forms resin bed 212 like this, also can reduce the drag loading that produces by pushing.

Figure 17 is the figure that another variation of magnetic sensor unit is shown.In the example shown in this figure, replace Figure 15 and leaf spring 206 shown in Figure 16, one is equipped with nonmagnetic resilient blade 213 on the face of the opposition side of the scale face of magnetic scale 210.

This resilient blade 213 according to less than 180 ° angle θ bending, forms two ends than the state of central authorities near Magnetic Sensor 207 sides from substantial middle, and it is arranged on the magnetic scale 210 integratedly continuously in the end of the fastener 210-1 of magnetic scale 210 side.

Thereby, by the elasticity of resilient blade 213, can push the movable part of the scale face of Magnetic Sensor 207 with magnetic scale 210 appropriateness to Magnetic Sensor 207 pushings, it is contacted with the test section 207-1 of Magnetic Sensor 207.

And resilient blade 213 is not limited to metal, also can be resinous elastic sheet.

And, the 3rd scale maintaining part 115-1 that moves picture frame 19 can be constituted: reduce the step of Magnetic Sensor 207 sides and form making whole upper right side from the figure oblique dip plane 115-2 of inclination to left down, one end of magnetic scale 210 is fixed on the 115-2 of this dip plane, magnetic scale 210 is tilted so that the free end side of magnetic scale 210 and Magnetic Sensor 207 side joints are near, and hold it on the scale maintaining part 115-1.

In this case, resilient blade 213 not bendings, and stick on the back side of magnetic scale 210.

Like this,, magnetic scale 210 is stably contacted with the test section 207-1 of Magnetic Sensor 207, can promote cost to reduce and the miniaturization of device even without the such pressing member of leaf spring shown in Figure 15 206 etc.

Adopt above-mentioned Figure 15 to any structure shown in Figure 17, by magnetic scale 210 is pushed to Magnetic Sensor 207 elasticity, can reduce the frictional resistance between Magnetic Sensor 207 and the magnetic scale 210, can absorb simultaneously the 3rd when moving picture frame 19 and moving and position deviation Magnetic Sensor 207, and can obtain the position signalling of expectation according to magnetic with simple structure.

As described above such, according to the present invention, in the magnetic scale and Magnetic Sensor that constitute scrambler, by magnetic scale is pushed to Magnetic Sensor elasticity, make the test section sliding contact of the scale face and the Magnetic Sensor of magnetic scale, thereby, simple in structure, frictional resistance between Magnetic Sensor and magnetic scale is alleviated, and can absorb moving lens and frame shift when moving and the position deviation of Magnetic Sensor, simultaneously always can use Magnetic Sensor correctly to read magnetic scale, can obtain the position signalling of the hope of mobile picture frame.

Like this, can provide the scrambler that always detects correct shift position, the digital camera that has the lens devices of this scrambler and have this lens devices.

Claims (15)

1. scrambler that utilizes magnetic to detect is characterized in that having:

Magnetic Sensor, it is installed on the static component;

Magnetic scale, one partial fixing and are configured to the state of scale face towards above-mentioned Magnetic Sensor on the mobile member that can move with respect to this Magnetic Sensor; And

Push the unit, it is installed on the above-mentioned static component, for the said scale face that makes this magnetic scale and the test section sliding contact of above-mentioned Magnetic Sensor, the part on the above-mentioned mobile member of not being fixed on of above-mentioned magnetic scale, from pushing of the opposition side of said scale face towards above-mentioned Magnetic Sensor.

2. the described scrambler of claim 1 is characterized in that,

The above-mentioned unit of pushing is made of laminated spring; On this laminated spring, on the position corresponding, be formed with the protuberance of face of opposition side of the said scale face of the above-mentioned magnetic scale of crimping with the above-mentioned test section of above-mentioned Magnetic Sensor.

3. claim 1 or 2 described scramblers is characterized in that,

On the face of the opposition side of the said scale face of above-mentioned magnetic scale, be provided with the unit of reducing friction.

4. the described scrambler of claim 3 is characterized in that,

The above-mentioned unit of reducing friction is the nonmagnetic metal thin slice that sticks on the face of opposition side of said scale face of above-mentioned magnetic scale.

5. the described scrambler of claim 3 is characterized in that,

The above-mentioned unit of reducing friction is arranged on the resin bed on the face of opposition side of said scale face of above-mentioned magnetic scale.

6. scrambler that utilizes magnetic to detect is characterized in that having:

Magnetic Sensor, it is installed on the static component;

Magnetic scale, one partial fixing and are configured to the state of scale face towards above-mentioned Magnetic Sensor on the mobile member that can move with respect to this Magnetic Sensor; And

The pushing unit, it is installed on the face of opposition side of said scale face of this magnetic scale integratedly, pushes the movable part of above-mentioned magnetic scale, and it is contacted with above-mentioned Magnetic Sensor.

7. the described scrambler of claim 6 is characterized in that,

Above-mentioned pushing unit is non magnetic resilient blade.

8. the described scrambler of claim 6 is characterized in that,

Above-mentioned pushing unit is resinous elastic sheet.

9. a scrambler that utilizes magnetic to detect is characterized in that,

Have:

Magnetic Sensor, it is installed on the static component;

Mobile member, it moves with respect to above-mentioned static component; And

Magnetic scale, it is installed on the installation portion of this mobile member, and moves with respect to above-mentioned Magnetic Sensor,

The above-mentioned installation portion of above-mentioned mobile member is keeping above-mentioned magnetic scale obliquely, and the part that makes above-mentioned Magnetic Sensor one side of being configured in of above-mentioned magnetic scale is than being installed in fixed part on this installation portion more near this Magnetic Sensor one side.

10. a scrambler is characterized in that,

The Magnetic Sensor of any one described scrambler in the claim 1 to 9 is fixedly installed on the assigned position of fixed component, this fixed component holds this mobile member in the mode that mobile member is free to slide, on the position corresponding with above-mentioned Magnetic Sensor, the magnetic scale of above-mentioned scrambler is fixed and is provided in the assigned position of above-mentioned mobile member;

Above-mentioned magnetic scale is configured to from free-ended bearing of trend with the moving direction of the above-mentioned mobile member parallel state of fixed part to above-mentioned mobile member extension.

11. a lens devices is characterized in that,

Has the described scrambler of claim 10;

The mobile member of this scrambler is the mobile picture frame that keeps optical element, and same, fixed component is to take in the framework that this moves picture frame in the mode that above-mentioned mobile picture frame is free to slide.

12. the described lens devices of claim 11 is characterized in that,

The above-mentioned magnetic scale of above-mentioned scrambler and above-mentioned Magnetic Sensor are with above-mentioned mobile picture frame being moved the driver element that drives, superimposed sidepiece one side that is configured in above-mentioned mobile picture frame.

13. claim 11 or 12 described lens devices is characterized in that, also have the sensor that the absolute position detection of the absolute position of detecting above-mentioned mobile picture frame is used.

14. claim 11,12 or 13 described lens devices is characterized in that, above-mentioned driver element is with the ultrasonic linear motor of ultrasonic vibration element as drive source.

15. a digital camera is characterized in that, has in the claim 11 to 14 any one described lens devices as the photography lens devices.

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