CN100578294C - Image sensing module - Google Patents
Image sensing module Download PDFInfo
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- CN100578294C CN100578294C CN200610092405A CN200610092405A CN100578294C CN 100578294 C CN100578294 C CN 100578294C CN 200610092405 A CN200610092405 A CN 200610092405A CN 200610092405 A CN200610092405 A CN 200610092405A CN 100578294 C CN100578294 C CN 100578294C
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- magnetite
- magnetic pole
- bearing seat
- load bearing
- image sensing
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Abstract
The present invention relates to an image sensing module. It includes the following several portions: fixed seat with fixing shaft, bearing seat with holding component, image sensing unit, coil, magnetite, auxiliary magnetite and Hall unit. Said invention provides the connection mode of all the above-mentioned portions and the concrete working principle of said image sensing module.
Description
[technical field]
The invention relates to a kind of image sensing module, particularly relevant for a kind of image sensing module of image sensing unit that allow in the two-dimensional directional motion.
[background technology]
As shown in Figure 1, United States Patent (USP) is announced No. 5266988 and has been disclosed a kind of image vibration restraining device that is used for camera.This image vibration restraining device is arranged in the camera lens 32, when using camera, angular acceleration unit 33p, 33y measure operator's the angular acceleration information of vibration camera, provide a circuit to calculate rear drive one group of driven unit 37p, 37y, this driven unit 37p, 37y make a certain eyeglass in the camera lens 32 move in the vertical optical axis direction, and revisal or inhibition are vibrated the image fog phenomenon that camera produces because of the operator.
Yet the eyeglass that drives in the camera lens moves in the vertical optical axis direction, can reduce the peripheral brightness of camera lens, and the mtf value of camera lens descends; Therefore, this kind method revisal operator vibrates the limited in one's ability of camera, perhaps reduces quality of optical imaging.
As shown in Figure 2, Japan's special permission login discloses a kind of travel mechanism No. 3551174.This travel mechanism utilizes piezoelectric element 35 to drive rotating shafts 34 and movable image sensing cell 16 as CCD, moves in the vertical optical axis direction.So, also can reach revisal or inhibition and vibrate the image fog phenomenon that camera produces, and look good with any camera lens because of the operator.
Piezoelectric element must be constantly by driven, so that suitable mobile CCD revisal image; Yet the more single eyeglass of the weight of CCD assembly is heavy, makes and must use the sizable piezoelectric element of volume could drive this assembly.Though this kind mode can not reduce the quality of optical imaging of camera lens, bulky piezoelectric element makes the camera volume with this revisal or inhibition hand vibrating function also increase thereupon.
[summary of the invention]
Fundamental purpose of the present invention is to provide a kind of image sensing module, can suppress or the revisal operator vibrates the image fog phenomenon that camera produces.
Image sensing module of the present invention comprises holder, is arranged at the load bearing seat on the holder and be fixed in image sensing unit on the load bearing seat movably; One first coil that it also comprises one first guide member that makes load bearing seat combine with holder and can move along a first direction with respect to holder, be arranged at one first magnetite on one of them of holder and load bearing seat, be arranged at that wherein another of holder and load bearing seat gone up and oppose with first magnetite, be arranged at this holder or this load bearing seat on one of them and corresponding to the first auxiliary magnetite of this first magnetite, and be arranged at one first other Hall subassembly of first coil, wherein first coil is between first magnetite and the first auxiliary magnetite.Produce magnetic force change between coil and first magnetite and the first auxiliary magnetite and drive load bearing seat and move along first direction by voltage to the first coil being provided, making to win by first guide member.
This first guide member comprises, is fixed in holder and load bearing seat one of them and a pair of first pivot parallel to each other, is arranged at a plurality of first grip parts of holder and load bearing seat respectively; By sheathed first pivot of these first grip parts difference, make load bearing seat combine, and load bearing seat can move along the axis direction of first pivot with holder.Further, this load bearing seat drives this image sensing unit and moves along the axis direction of first pivot.
This load bearing seat more comprises a movable platen, and one second guide member that makes load bearing seat combine with this movable platen and can move along second direction with respect to holder.Further, image sensing unit is fixed on this movable platen.
This image sensing module more comprise be arranged at one second magnetite on one of them of holder and movable platen, be arranged on wherein another of holder and movable platen and with one second coil of second magnetite opposition, be arranged at this holder or this load bearing seat on one of them and corresponding to the second auxiliary magnetite of this second magnetite, and be arranged at one second other Hall subassembly of second coil, wherein second coil is between second magnetite and the second auxiliary magnetite.By voltage to the second coil is provided, make that producing magnetic force change driving movable platen between second coil and second magnetite and the second auxiliary magnetite moves along second direction by second guide member.Further, between this movable platen and this load bearing seat, produce relative motion in second direction.
This second guide member comprises, is fixed in load bearing seat and movable platen on one of them and a pair of second pivot parallel to each other, is arranged at a plurality of second grip parts of load bearing seat and movable platen respectively; By sheathed second pivot of these second grip parts difference, make movable platen combine, and movable platen can be along the axis direction relative motion of second pivot with load bearing seat.
In the present invention, second direction is different from first direction; Preferably, the axis direction of first pivot is vertical with the axis direction of second pivot.
In the present invention, the N magnetic pole of first magnetite and S magnetic pole are arranged along the axis direction of first pivot; The N magnetic pole of second magnetite and S magnetic pole are arranged along the axis direction of second pivot.
In the present invention, the first auxiliary magnetite is parallel to first magnetite, and comprises N magnetic pole and S magnetic pole, and the N magnetic pole of the first auxiliary magnetite is corresponding to the S magnetic pole of first magnetite, and first assists the N magnetic pole of the S magnetic pole of magnetite corresponding to first magnetite.
In the present invention, second magnetite comprises N magnetic pole and S magnetic pole, and N magnetic pole and this S magnetic pole are arranged along the axis direction of second pivot.
In the present invention, the second auxiliary magnetite is parallel to second magnetite, and comprises N magnetic pole and S magnetic pole, and the N magnetic pole of this second auxiliary magnetite is corresponding to the S magnetic pole of this second magnetite, and this second assists the N magnetic pole of the S magnetic pole of magnetite corresponding to this second magnetite.
In the present invention, when image sensing module remained static, half and half of first Hall subassembly partly was positioned at the N magnetic pole and the S magnetic pole top of first magnetite; And half and half part of second Hall subassembly is positioned at the N magnetic pole and the S magnetic pole top of second magnetite.
Compared with prior art, the present invention adopts a pair of coil and two pairs of magnetites to drive image sensing unit in the vertical optical axis direction to move and can increase thrust to coil, thereby improves sensitivity and the speed of this image sensing module for vibration compensation.
[description of drawings]
Fig. 1 is that United States Patent (USP) discloses a kind of image vibration restraining device that is used for camera No. 5266988;
Fig. 2 is a kind of travel mechanism that Japan's special permission login discloses for No. 3551174;
Fig. 3 is the image sensing module of preferred embodiment of the present invention;
Fig. 4 is the rear view of the holder in this preferred embodiment;
Fig. 5 is a stereographic map, and a preferred embodiment of modulating the optical observation apparatus that shows correlative value of the present invention is described;
Fig. 6 is the longitudinal sectional view of this preferred embodiment, illustrates that capel body embedding that light into weakens the unit ties the state in pressure ring;
Fig. 7 a is the synoptic diagram of the combination of first magnetite of the present invention, first coil and the first auxiliary magnetite.
Fig. 7 b represents according to Lenz law coil stressed synoptic diagram in magnetic field.
Fig. 7 c is the state that the magnetic line of force distributes among the presentation graphs 7a.
Fig. 8 is the photographic means with image sensing module of the present invention.
[embodiment]
Before the present invention is described in detail, be noted that, at the employed relative position term of the following description content, for example " first direction X ", " second direction Y ", " third direction Z " are that the coordinate direction that is indicated with each figure is a benchmark, and are somebody's turn to do " first direction X " and should " second direction Y " reach and should " third direction Z " be perpendicular to one another.
Fig. 3 is the image sensing module of preferred embodiment of the present invention, can be applicable to vibrate the image fog phenomenon that camera produces with inhibition or revisal operator in the photographic means.This preferred embodiment comprises a holder 20, and this holder 20 has a hollow part 29 (the label ginseng is shown in Figure 4), and in this hollow part 29 load bearing seat 30 is set; Have a movable platen 40 that separates with it in the load bearing seat 30, wherein image sensing unit 50, as CCD, are arranged on the movable platen 40.Wherein, the light-sensitive surface (not shown) of image sensing unit 50 is towards the direction opposite with third direction Z.
Fig. 4 is the stereographic map of the holder in this preferred embodiment.As shown in Figure 4, this holder 20 has a pair of first magnetite 21,22, a pair of second magnetite 23,24.The both sides that are arranged at hollow part 29 that the first pair of magnetite 21,22 is parallel to each other, wherein the N magnetic pole of one first magnetite 21, S magnetic pole are arranged along first direction X, and the N magnetic pole of another first magnetite 22, S magnetic pole are also arranged along first direction X.The both sides that are arranged at hollow part 29 that the second pair of magnetite 23,24 is also parallel to each other, wherein the N magnetic pole of one second magnetite 23, S magnetic pole are arranged along second direction Y, and the N magnetic pole of another second magnetite 24, S magnetic pole are also arranged along second direction Y.Moreover the same pole N of first magnetite 21,22 is 29 settings towards the hollow part, and the same pole S of second magnetite 23,24 29 settings towards the hollow part.
Fig. 5 is the stereographic map that has the load bearing seat of movable platen in this preferred embodiment; Fig. 6 is the rear view that has the load bearing seat of movable platen in this preferred embodiment.As Fig. 5, shown in Figure 6, this load bearing seat 30 has two alar part 31a, 31b, and on these two alar part 31a, 31b, a pair of first coil 32a, 32b are set respectively, a pair of first auxiliary magnetite 21 ', 22 ' and the first Hall subassembly 44a.Wherein, the first auxiliary magnetite 21 ' is arranged at alar part 31a, corresponding to first magnetite 21, first Hall subassembly 44a next-door neighbour, the first auxiliary magnetite 21 ' also is arranged on the alar part 31a, the first coil 32a is arranged between first magnetite 21 and the first auxiliary magnetite 21 ', wherein first magnetite 21 is parallel to the S utmost point setting of the N utmost point of the first auxiliary magnetite 21 ' and the first auxiliary magnetite 21 ' corresponding to first magnetite 21, and the S utmost point of the first auxiliary magnetite 21 ' is provided with corresponding to the N utmost point of first magnetite 21, shown in Fig. 7 a; Another first auxiliary magnetite 22 ' is arranged at another alar part 31b, similarly the first coil 32b is arranged between first magnetite 22 and the first auxiliary magnetite 22 ', wherein first magnetite 22 is parallel to the S utmost point setting of the N utmost point of the first auxiliary magnetite 22 ' and the first auxiliary magnetite 22 ' corresponding to first magnetite 22, and the S utmost point of the first auxiliary magnetite 22 ' is provided with corresponding to the N utmost point of first magnetite 22.Should be slightly rectangular to the first coil 32a, 32b, its long limit is parallel to each other.Load bearing seat also comprises a pair of first pivot 25,26 parallel to each other.
In addition, movable platen 40 also has two alar part 41a, 41b, and a pair of second auxiliary magnetite 23 ', 24 ', a pair of second coil 42a, 42b and the one second Hall subassembly 44b is set respectively on these two alar part 41a, 41b.The second auxiliary magnetite 23 ' is arranged at alar part 41a, second Hall subassembly 44b next-door neighbour, the second auxiliary magnetite 23 ' also is arranged on the alar part 41a, the second coil 42a is arranged between second magnetite 23 and the second auxiliary magnetite 23 ', wherein to be parallel to the N utmost point of the second auxiliary magnetite 23 ' and the second auxiliary magnetite 23 ' be S utmost point setting corresponding to first magnetite 23 to second magnetite 23, and the S utmost point of the second auxiliary magnetite 23 ' is the N utmost point setting corresponding to first magnetite 23; Another second auxiliary magnetite 24 ' is arranged at another alar part 41b, another second coil 42b is arranged between second magnetite 24 and the second auxiliary magnetite 24 ', wherein to be parallel to the N utmost point of the second auxiliary magnetite 24 ' and the second auxiliary magnetite 24 ' be S utmost point setting corresponding to first magnetite 24 to second magnetite 24, and the S utmost point of the second auxiliary magnetite 24 ' is the N utmost point setting corresponding to first magnetite 24.Should be also slightly rectangular to the second coil 42a, 42b, its long limit is parallel to each other.Moreover in load bearing seat 30 outsides, the alar part 41a place of contiguous movable platen 40 has two first grip part 35a, 35b, and this first grip part 35a, 35b have a hole 351a, 351b respectively; And in load bearing seat 30 outsides, another alar part 41b place of contiguous movable platen 40 has two first grip part 35c, 35d, and these two first grip part 35c, 35d have a hole 351c, 351d respectively.
One coil by current i can be subjected to power F in magnetic field B, according to Lenz law (Lenz ' s Law), F=i * B, shown in Fig. 7 b, stressed F can be divided into horizontal component Fx and vertical stress component Fy, and horizontal component Fx helps coil to move in horizontal direction, and vertical stress component Fy then can make coil contact with magnetite and increase the friction force that the obstruction coil moves, therefore wish that vertical stress component Fy is the smaller the better, so must make magnetic field B (magnetic line of force) vertical with surface level as far as possible.Therefore the present invention is with two groups of magnetites (for example first magnetite and the first auxiliary magnetite) configured in parallel, and make the S utmost point of the N utmost point of a magnetite corresponding to another magnetite, shown in Fig. 7 a, so make by the magnetic line of force of coil and the angle of surface level and can spend near 90, be that the magnetic line of force can level off to vertical with surface level, the vertical stress component Fy that coil is subjected to levels off to 0 and horizontal component Fx reaches maximum, and the distribution of its magnetic line of force is shown in Fig. 7 c.
A pair of first pivot 25,26 is set parallel to each other; Wherein, the first short pivot 25 is positioned at a side setting of magnetite 21 and magnetite 24, and another first long pivot 26 is arranged at a side of magnetite 23 in the direction away from hollow part 29.In this embodiment, the first long pivot 26 pass load bearing seat 30 two first grip part 35c, 35d hole 351c, 351d and after being held, be fixed in again on grip part 25b, the 25c of holder 20; And the first short pivot 25 passes the first grip part 35a of load bearing seat 30, hole 351a, the 351b of 35b, is fixed among the grip part 25a of holder 20 again.Like this, this constitutes one first guide member 60 to first pivot 25,26 and these grip parts 25a, 25b, 25c, 35a, 35b, 35c, 35d; Make load bearing seat 30 can utilize this first guide member 60 to move at second direction Y.
As Fig. 5, shown in Figure 6, this load bearing seat 30 also has a hollow part 39; And image sensing unit 50 places in the hollow part 39 and is arranged on the movable platen 40.Movable platen 40 has a circuit board 45, image sensing unit 50 and these circuit board 45 electrically connects; And be fixed on this circuit board 45 and around the rectangle frame 46 of this image sensing unit 50.This rectangle frame 46 a pair of frame wall 461,462 parallel with first direction X has the second grip part 463a, 463b, 463c, 463d respectively; And the second grip part 463a, 463b, 463c, 463d have a hole 4631a, 4631b, 4631c, 4631d respectively.A pair of second pivot 47,48 is parallel to first direction X; Wherein, one second pivot 47 passes grip part 36a, the 36b on the load bearing seat 30, be fixed in load bearing seat 30 after inserting hole 4631a, the 4631b of the second grip part 463a, 463b of movable platen 40 again, another second pivot 48 combines movable platen 40 after passing hole 4631c, the 4631d of the second grip part 463c, 463d of grip part 36c, 36d on the load bearing seat 30 and movable platen 40 respectively with load bearing seat 30.Like this, this constitutes one second guide member 70 to second pivot 47,48 and these grip parts 36a, 36b, 36c, 36d, 463a, 463b, 463c, 463d; Make movable platen 40 can utilize this second guide member 70 to move at first direction X.
Fig. 8 is the photographic means with image sensing module of the present invention.As Fig. 3 and shown in Figure 8, has a vibration perception component 110 in the photographic attachment 100, for example angular acceleration assembly or acceleration assembly, after getting the vibratory output that the user operates photographic attachment 100 by these vibration perception component 110 sensings, provide a voltage signal to these first coils 32a, 32b and these second coils 42a, 42b by a pulse width modulation circuit 120 or digital circuit.These first, second coils 32a, 32b, 42a, 42b produce transformable magnetic field respectively, after these first magnetite, 21,22, first auxiliary magnetites 21 ', 22 ', these second magnetites 23,24 and the second auxiliary magnetite 23 ', 24 ' effect, this load bearing seat 30 can produce corresponding motion in second direction Y, and this movable platen 40 can make image sensing unit 50 also can produce corresponding motion in first direction X and second direction Y in the corresponding motion of first direction X generation.Like this, can suppress or the revisal operator vibrates the image fog phenomenon that camera produces.
In the specific embodiment of the present invention, when photographic attachment 100 during in stationary state, image sensing module also remains static, above the N magnetic pole that half and half of the first Hall subassembly 44a partly is positioned at first magnetite and the S magnetic pole; And half and half part of the second Hall subassembly 44b is positioned at the N magnetic pole and the S magnetic pole top of second magnetite.Therefore, to measure the changes of magnetic field amount obtain be zero for these first, second Hall subassemblies 44a, 44b.When the user operates photographic attachment 100, and when the device 100 of taking pictures was produced vibration, these first, second coils 42a, 42b, 43a, first, second magnetite 21,22,23,24 of 43b and these and first, second auxiliary magnetite 21 ', 22 ', 23 ', 24 ' effect drove load bearing seat 40 and produce corresponding motion at first direction X and second direction Y; These first, second Hall subassemblies 44a, 44b measure the variable quantity obtain magnetic field, can calculate amount of movement and the travel frequency of learning load bearing seat 40 like this, and the voltage signal that provides of in good time corrected impulse width modulation circuit or digital circuit.
Conclude above-mentionedly, image sensing module of the present invention can obtain following effect and advantage, so really can reach the purpose of invention:
1. because the present invention changes image sensing unit with respect to the position of optical axis, be not in the modulation camera lens The position of eyeglass is not so can reduce peripheral brightness and the image quality of camera lens.
2. because the present invention adopts a pair of coil and two pairs of magnetites to drive the image sense in the vertical optical axis direction The measurement unit motion can increase the thrust to coil, thereby improves this image sensing module for the compensation of vibration Sensitivity and speed.
Claims (11)
1. image sensing module, it comprises holder, is arranged at the load bearing seat on the holder and be arranged at image sensing unit on the load bearing seat movably; It is characterized in that: it also comprises: one first guide member that makes load bearing seat combine with holder and can move along a first direction with respect to holder, be arranged at holder and load bearing seat one first magnetite on one of them, be arranged on wherein another of holder and load bearing seat and with one first coil of first magnetite opposition, be arranged at this holder or this load bearing seat on one of them and with this first magnetite position corresponding up and down first assist magnetite, and be arranged at one first other Hall subassembly of first coil, wherein first coil is between first magnetite and the first auxiliary magnetite, by voltage to the first coil is provided, making wins produces magnetic force change between coil and first magnetite and the first auxiliary magnetite and drives load bearing seat and move along first direction by first guide member, this load bearing seat comprises that more one is installed on this load bearing seat and can produces the movable platen of motion with respect to this load bearing seat, this load bearing seat also has a hollow part, this image sensing unit places in the hollow part and is arranged on the movable platen, make this image sensing unit be fixed on this movable platen, this image sensing module more comprises second guide member that makes this movable platen combine with this load bearing seat and can move along a second direction with respect to this load bearing seat, one is arranged at one of them second coil of this holder and this movable platen, one be arranged at this holder and this movable platen one of them and with this second coil second magnetite in opposite directions, one is arranged at one of them the second auxiliary magnetite of this holder or this load bearing seat, and corresponding to this second magnetite, make this second coil between this second magnetite and this second auxiliary magnetite and one with this second coil be arranged at jointly this holder and this movable platen one of them and be arranged at second Hall subassembly by this second coil, by providing voltage, make this second coil and this second magnetite to this second coil, produce magnetic force change and drive this load bearing seat between the second auxiliary magnetite and move along this second direction by this second guide member.
2. image sensing module as claimed in claim 1 is characterized in that: this first guide member comprises that several are arranged at first grip part and a pair of parallel to each other and first pivot that gripped of a wherein part by these first grip parts separately on this holder and this load bearing seat respectively; By sheathed this first pivot of these first grip parts difference, make this load bearing seat combine, and this load bearing seat can move along the axis direction of this first pivot with this holder.
3. image sensing module as claimed in claim 1 is characterized in that: this load bearing seat more comprise one with the circuit board of this movable platen secure bond, this image sensing unit and this circuit board electrically conduct.
4. image sensing module as claimed in claim 1, it is characterized in that: this second guide member comprises: several are arranged at second grip part and a pair of parallel to each other and second pivot that gripped of a wherein part by these second grip parts separately on this load bearing seat and this movable platen respectively, by sheathed this second pivot of these second grip parts difference, make this movable platen combine, and this movable platen can move along the axis direction of this second pivot with this load bearing seat.
5. image sensing module as claimed in claim 4 is characterized in that: the axis direction of this second pivot is vertical with the axis direction of this first pivot.
6. image sensing module as claimed in claim 1 is characterized in that: this second magnetite comprises N magnetic pole and S magnetic pole, and this N magnetic pole and this S magnetic pole are arranged along the axis direction of this second pivot.
7. image sensing module as claimed in claim 6, it is characterized in that: this second auxiliary magnetite is parallel to this second magnetite, and comprise N magnetic pole and S magnetic pole, and the N magnetic pole of this second auxiliary magnetite is corresponding to the S magnetic pole of this second magnetite, and the S magnetic pole of this second auxiliary magnetite is corresponding to the N magnetic pole of this second magnetite.
8. image sensing module as claimed in claim 6 is characterized in that: when this image sensing module remained static, half and half of this second Hall subassembly partly was positioned at the N magnetic pole and the S magnetic pole top of this second magnetite.
9. image sensing module as claimed in claim 1 is characterized in that: this first magnetite comprises N magnetic pole and S magnetic pole, and this N magnetic pole and this S magnetic pole are arranged along the axis direction of this first pivot.
10. image sensing module as claimed in claim 9, it is characterized in that: this first auxiliary magnetite is parallel to this first magnetite, and comprise N magnetic pole and S magnetic pole, and the N magnetic pole of this first auxiliary magnetite is corresponding to the S magnetic pole of this first magnetite, and the S magnetic pole of this first auxiliary magnetite is corresponding to the N magnetic pole of this first magnetite.
11. image sensing module as claimed in claim 9 is characterized in that: when this image sensing module remained static, half and half of this first Hall subassembly partly was positioned at the N magnetic pole and the S magnetic pole top of this first magnetite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610092405A CN100578294C (en) | 2006-05-26 | 2006-05-26 | Image sensing module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610092405A CN100578294C (en) | 2006-05-26 | 2006-05-26 | Image sensing module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1862316A CN1862316A (en) | 2006-11-15 |
| CN100578294C true CN100578294C (en) | 2010-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610092405A Expired - Fee Related CN100578294C (en) | 2006-05-26 | 2006-05-26 | Image sensing module |
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| Country | Link |
|---|---|
| CN (1) | CN100578294C (en) |
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2006
- 2006-05-26 CN CN200610092405A patent/CN100578294C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1862316A (en) | 2006-11-15 |
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