CN101004470A

CN101004470A - Lens module

Info

Publication number: CN101004470A
Application number: CN200610033223.3A
Authority: CN
Inventors: 蔡明江
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2006-01-21
Filing date: 2006-01-21
Publication date: 2007-07-25
Anticipated expiration: 2026-01-21
Also published as: CN100501479C

Abstract

A lens module is prepared for arranging a regulation magnetic iron in lens cone, setting lens in lens cone, arranging a positioning magnetic iron set in sleeve, setting said lens cone in internal of said sleeve, maintaining balance of lens cone by interaction of positioning magnetic iron set and regulation magnetic iron.

Description

Camera lens module

[technical field]

The present invention relates to a kind of camera lens module, the particularly a kind of camera lens module that can in focus process, reduce friction.

[background technology]

Be provided with Focusing mechanism more in the camera lens modules, reach the needs of image at a distance more nearby to satisfy respectively to take.General Focusing mechanism all utilizes each the component locations conversion of mechanical driving device controls lens module to focus.Yet, when adopting mechanical driving device to focus, cause the intensity of Focusing mechanism and degree of regulation to be affected because of frequent friction between each drive disk assembly easily, shorten the serviceable life of camera lens module, and influenced shooting quality.

[summary of the invention]

In view of this, being necessary to provide a kind of can reduce friction in focus process, the camera lens module that increases the service life.

A kind of camera lens module comprises a lens barrel, an eyeglass and a sleeve; Wherein lens barrel further comprises a regulating magnet; Eyeglass is installed in lens barrel inside; Sleeve further comprises a location group of magnets, and described lens barrel is installed in this sleeve inner, and described phase magnet group and described regulating magnet interact and keep the balance of lens barrel.

Compared with prior art, described camera lens module can be in contact with one another with sleeve in reducing the lens barrel outside to a great extent in focus process, rub thereby reduce between lens barrel and the sleeve, prolonged the serviceable life of camera lens module, and need not add the complicated mechanical gearing, simple in structure, with low cost.

[description of drawings]

Fig. 1 is that the preferred embodiment of camera lens module of the present invention is used for the synoptic diagram than wide-long shot.

Fig. 2 is used for the synoptic diagram that closer distance is taken for the preferred embodiment of camera lens module of the present invention.

[embodiment]

See also Fig. 1, the preferred embodiment of camera lens module of the present invention comprises a lens barrel 1, an eyeglass 2 and a sleeve 3.Wherein eyeglass 2 is installed in lens barrel 1 inside, and lens barrel 1 is installed in sleeve 3 inside.One image sensing module 4 is installed in sleeve 3 one ends, is used to receive the optical image signal from eyeglass 2.

This lens barrel 1 is a hollow circular cylinder, it comprises an external cylindrical surface 101, an inner cylinder face 102, a shooting end 11 and one sense terminals 12, wherein this shooting end 11 and sense terminals 12 are located at the relative two ends of lens barrel 1 respectively, and this shooting end 11 offers one and takes opening 111, and sense terminals 12 offers a sensing opening 121.Lens barrel 1 also comprises a preceding stop section 13, stop section 14, a back, a regulating magnet 15, one first keeper 16 and one second keeper 17.Wherein preceding stop section 13 is an annulus, and it is set in contiguous end 11 places of taking on the external cylindrical surface 101; Back stop section 14 is an annulus, and it is set in contiguous sense terminals 12 places on the external cylindrical surface 101.Regulating magnet 15 ringwise, it is set on the external cylindrical surface 101 contiguous sense terminals 12 places regularly, and in preceding stop section 13 with afterwards between the stop section 14.The south magnetic pole of this regulating magnet 15 is arranged at and holds 11 places near taking, and the north magnetic pole of this regulating magnet 15 is arranged near sense terminals 12 places.First keeper 16 adopts the ferrimagnet manufacturing ringwise, and its external diameter is slightly less than the external diameter of preceding stop section 13, and this first keeper 16 is installed in 13 edges, preceding stop section; Second keeper 17 adopts the ferrimagnet manufacturing also ringwise, and its external diameter is slightly less than the external diameter of stop section 14, back, is installed in 14 edges, stop section, back.

Eyeglass 2 is a circular eyeglass, and its exterior contour matches with the inner cylinder face 102 of lens barrel 1, and eyeglass 2 is installed on lens barrel 1 inside.Be appreciated that the eyeglass 2 that is installed in lens barrel 1 inside in the preferred embodiment of the present invention can be a plurality of.

Sleeve 3 is a hollow circular cylinder, and the inside of its hollow forms the inside surface 301 of a cylindrical so.This sleeve 3 comprises end 31 and one potted ends 32 of coming in and going out, this discrepancys hold 31 and potted ends 32 be located at the relative two ends of sleeve 3 respectively; The end 31 of wherein coming in and going out offers one and regulates opening 311, and this width of regulating opening 311 is greater than the diameter of the external cylindrical surface 101 of lens barrel 1 and the external diameter of regulating magnet 15, and less than the external diameter of preceding stop section 13.This sleeve 3 also comprises a location group of magnets 33 and an a positioning block 34, wherein phase magnet group 33 comprises one first phase magnet 331, one second phase magnet 332, one first magnetic conductive part 333 and one second magnetic conductive part 334, wherein first phase magnet 331 and second phase magnet 332 are annular, this first phase magnet 331 is installed on contiguous end 31 places of coming in and going out on the inside surface 301, this second phase magnet 332 is installed on contiguous potted ends 32 places on the inside surface 301, and the internal diameter of this first phase magnet 331 and second phase magnet 332 is all greater than the diameter of the external cylindrical surface 101 of lens barrel 1, also all greater than the external diameter of stop section 14, back.The north magnetic pole of first phase magnet 331 and second phase magnet 332 all is arranged near potted ends 32 places, and south magnetic pole all is arranged near end 31 places of coming in and going out.First magnetic conductive part 333 and second magnetic conductive part 334 and all adopt the ferrimagnet manufacturing all ringwise.Locating piece 34 a annular lug for convexing to form on the inside surface 301, it is located between first phase magnet 33 and second phase magnet 34, and the internal diameter of this locating piece 34 is greater than the diameter of the external cylindrical surface 101 of lens barrel 1, and less than the external diameter of stop section 14, back.First magnetic conductive part 333 is installed in end 31 inside of coming in and going out, and these first magnetic conductive part, 333 1 ends contact with first regulating magnet 331, and the other end exposes outside the lens barrel 1.Second magnetic conductive part 334 is installed in locating piece 34 inside, and the Outboard Sections of these second magnetic conductive part, 334 1 end faces contacts with second regulating magnet 332, and the inside part of this end face then exposes near the edge of potted ends 32 from locating piece 34.

Image sensing module 4 comprises a substrate 41 and an image sensing unit 42.Substrate 41 is made by materials such as plastics, glass fibre, reinforced plastics or potteries.Image sensing unit 42 is fixed in the surface of substrate 41, in order to being the electron image signal with the optical image conversion of signals.

When the preferred embodiment of camera lens module of the present invention is assembled, lens barrel 1 is installed in the sleeve 3, then preceding stop section 13 and stop section 14, back are put external cylindrical surface 101 and fixed from the shooting end 11 of lens barrel 1 and sense terminals 12 respectively, and the preceding stop section 13 that makes lens barrel 1 is positioned at outside the discrepancy end 31 of sleeve 3, come in and go out end 31 and locating piece 34 between preceding stop section 13 and stop section 14, back, and lens barrel 1 can move back and forth in sleeve 3 like this; And preceding stop section 13 cooperates with adjusting opening 311, can limit lens barrel 1 moving to potted ends 32; Back stop section 14 cooperates with locating piece 34, can limit lens barrel 1 moving to the end 31 of coming in and going out.When lens barrel 1 to potted ends 32 move by preceding stop section 13 blocks the time, first keeper 16 can contact with first magnetic conductive part 333 and be attracted by first magnetic conductive part 333 by first phase magnet 331, it is fixing with respect to sleeve 3 that lens barrel 1 is axially gone up in it; When lens barrel 1 to the end 31 of coming in and going out mobile during by stop section, back 14 blocks, second keeper 17 can contact with second magnetic conductive part 334 and be attracted by second magnetic conductive part 334 by second phase magnet 332, it is fixing with respect to sleeve 3 that lens barrel 1 is axially gone up in it.Substrate 41 with image sensing module 4 is fixed on the potted ends 32 of sleeve 3 at last, with the sensing opening 121 of image sensing unit 42 over against lens barrel 1, can will be the electron image signal from the optical image conversion of signals of eyeglass 2.

See also Fig. 2, when the preferred embodiment of camera lens module of the present invention is used to take longer-distance scene, earlier with lens barrel 1 to the potted ends 32 of sleeve 3 be pressed into preceding stop section 13 by block in regulating outside the opening 311, this moment, eyeglass 2 and image sensing unit close together were fit to take longer-distance scene.Regulating magnet 15 is positioned at second phase magnet 332 at this moment, and the north magnetic pole position of the position of the north magnetic pole of regulating magnet 15 and second phase magnet 332 is approaching, and the south magnetic pole position of the position of the south magnetic pole of regulating magnet 15 and second phase magnet 332 is approaching; If lens barrel 1 will cause regulating magnet 15 more approaching with second phase magnet 332 on the offset direction in its directly upwards occurrence positions skew, the magnetic repulsion on the offset direction is increased; 332 of the regulating magnet 15 on opposite with this offset direction on the other hand direction and second phase magnets mutually away from, magnetic repulsion on this direction is reduced, therefore will to drive lens barrel 1 mobile on this direction opposite with the offset direction for regulating magnet 15 suffered magnetic repulsions, make lens barrel 1 come back to the middle position of inside surface 301, the lens barrel 1 footpath suffered magnetic repulsion complete equipilibrium of all directions upwards herein, lens barrel 1 will reach steady state (SS) in the central authorities of sleeve 3 inside; Because the effect of magnetic repulsion, the external cylindrical surface 101 of lens barrel 1 can not be in contact with one another with the inside surface 301 of sleeve 3.By above method, can prevent that lens barrel 1 from skew directly upwards occurring in it, avoid the external cylindrical surface 101 of lens barrel 1 in the focus process to be in contact with one another simultaneously and rub with sleeve 3.When lens barrel 1 to potted ends 32 move by preceding stop section 13 blocks the time, first keeper 16 contacts with first magnetic conductive part 333, the magnetic force of first phase magnet 331 has attracted first keeper 16 by first magnetic conductive part 333, prevent that lens barrel 1 from moving in the axial direction, thereby guarantee that lens barrel 1 is positioned at the position that is suitable for taking.

When the preferred embodiment of camera lens module of the present invention is used to take the scene of closer distance, piece 34 blocks are positioned lens barrel 1 stop section 14 after the discrepancy end 31 of sleeve 3 is drawn out to earlier, this moment, eyeglass 2 was far away with the image sensing unit distance, was fit to take the scene of closer distance.This moment, first phase magnet 331 was placed in outside the regulating magnet 15, and similarly, under the effect of magnetic repulsion, lens barrel 1 will reach steady state (SS) in sleeve 3 central interior, prevented that lens barrel 1 from directly upwards occurring being offset and rubbing with sleeve 3 in it; Second keeper 17 then contacts with second magnetic conductive part 334, and the magnetic force of second phase magnet 332 has attracted second keeper 17 by second magnetic conductive part 334, prevents that lens barrel 1 from moving in the axial direction, guarantees that lens barrel 1 is positioned at the position that is suitable for taking.

Be appreciated that, the magnetic pole setting of regulating magnet 15, first phase magnet 331 and second phase magnet 332 in the preferred embodiment of camera lens module of the present invention can change simultaneously, as long as it is all identical that three's magnetic pole is provided with direction, can guarantee that lens barrel 1 relies on electromagnetic repulsion force to keep balance in the middle position of sleeve 3 inside, and avoid the external cylindrical surface 101 of lens barrel 1 to be in contact with one another and rub with sleeve 3.

Claims

1. camera lens module, it comprises a lens barrel and an eyeglass, wherein eyeglass is installed in lens barrel inside, it is characterized in that: this lens barrel comprises a regulating magnet; This camera lens module further comprises a sleeve, and this sleeve comprises a location group of magnets, and lens barrel is installed in this sleeve inner, and phase magnet group and regulating magnet interact and keep the balance of lens barrel.

2. camera lens module as claimed in claim 1, it is characterized in that: described lens barrel is a hollow circular cylinder, it comprises an external cylindrical surface, an inner cylinder face, a shooting end and a sense terminals, wherein take end and be located at the relative two ends of this lens barrel respectively with sense terminals, and take end and offer a shooting opening, sense terminals offers a sensing opening.

3. camera lens module as claimed in claim 2 is characterized in that: described lens barrel further comprises a preceding stop section and stop section, a back, and wherein preceding stop section is an annulus, and it is set in contiguous described shooting end place on the described external cylindrical surface; Back stop section is an annulus, and it is set in contiguous described sense terminals place on the described external cylindrical surface.

4. camera lens module as claimed in claim 3, it is characterized in that: described lens barrel comprises a regulating magnet, first keeper and one second keeper, wherein regulating magnet ringwise, it is set in contiguous described sense terminals place on the described external cylindrical surface regularly, and between described preceding stop section and stop section, described back; First keeper and second keeper all adopt the ferrimagnet manufacturing ringwise and all; First keeper is installed in edge, described preceding stop section, and second keeper is installed in edge, stop section, described back.

5. camera lens module as claimed in claim 2 is characterized in that: described eyeglass is a circular eyeglass, and its exterior contour matches with the inner cylinder face of described lens barrel, and eyeglass is installed on lens barrel inside.

6. camera lens module as claimed in claim 4, it is characterized in that: described sleeve is a hollow circular cylinder, it comprises an inside surface, a discrepancy end and a potted ends, and wherein inside surface is the face of cylinder of the inside formation of this sleeve hollow, and come in and go out end and potted ends are located at the relative two ends of this sleeve respectively; Described discrepancy end offers one and regulates opening, and this width of regulating opening is greater than the diameter of the external cylindrical surface of described lens barrel and the external diameter of described regulating magnet, and less than the external diameter of described preceding stop section.

7. camera lens module as claimed in claim 6, it is characterized in that: described phase magnet group further comprises one first phase magnet and one second phase magnet, this first phase magnet and second phase magnet are annular, first phase magnet is installed on contiguous described discrepancy end place on the described inside surface, and second phase magnet is installed on contiguous described potted ends place on the inside surface; The internal diameter of this first phase magnet and second phase magnet is all greater than the diameter of the external cylindrical surface of described lens barrel, and all greater than the external diameter of stop section, described back; It is all identical that the magnetic pole of described regulating magnet, first phase magnet and second phase magnet is provided with direction.

8. camera lens module as claimed in claim 7 is characterized in that: described sleeve further comprises a positioning block, and this locating piece is an annular lug that convexes to form on the described inside surface, and it is located between described first phase magnet and described second phase magnet; The internal diameter of this locating piece is greater than the diameter of the external cylindrical surface of described lens barrel, and less than the external diameter of stop section, described back.

9. camera lens module as claimed in claim 8 is characterized in that: described lens barrel is installed on the described sleeve, and block portion is positioned at outside the described discrepancy end before described, comes in and goes out end and described locating piece between preceding stop section and stop section, described back.

10. camera lens module as claimed in claim 9 is characterized in that: described phase magnet group further comprises first magnetic conductive part and one second magnetic conductive part, and this first magnetic conductive part and one second magnetic conductive part all adopt the ferrimagnet manufacturing ringwise and all; Wherein said first magnetic conductive part can be installed in the described sleeve in contact with described first keeper, contacts with described first regulating magnet simultaneously; Described second magnetic conductive part can be installed in the sleeve in contact with described second keeper, contacts with described second regulating magnet simultaneously.