CN2862066Y

CN2862066Y - Auto Focus Lens Module

Info

Publication number: CN2862066Y
Application number: CN 200520144136
Authority: CN
Inventors: 徐三伟; 黄世超; 朱贤儒
Original assignee: Yipin Internat Science & Technology Co ltd
Current assignee: Yipin Internat Science & Technology Co ltd
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-01-24
Anticipated expiration: 2015-12-31

Abstract

The utility model relates to an automatic focusing lens module, which utilizes electromagnetic force to drive a lens to move forwards and backwards for focusing and comprises a bottom cover, two guide pins, two conducting strips, a lower frame, a lens sleeve, two springs, a coil, a lens upper frame, two magnets and an upper cover, wherein the lens sleeve, the coil and the upper frame are clamped on the periphery of the lens to form a lens barrel group, and the coil is clamped between the lens sleeve and the upper frame to reduce the diameter width and the occupied volume of the coil; the two arc magnets are respectively clamped on the left side and the right side of the coil and are positioned by the upper cover so as to reduce the volume occupied by the magnets; the two springs are respectively sleeved on the two guide pins at the opposite angles of the inner surface of the bottom cover (base) and are respectively pressed upwards on the inner surface of the upper cover so as to provide uniform spring force for the focusing movement of the lens cone; therefore, the components of the lens module are simplified, the volume is reduced, and the lens barrel group can stably focus and move.

Description

The autofocus lens module

Technical field

The utility model provides a kind of autofocus lens module, refers in particular to a kind of driving force of utilizing electromagnetic force and compression spring masterpiece to adjust for the camera lens focusing.

Background technology

The mobile phone of digital camera or tool shoot function all is provided with a camera lens module, and can set up a focus adjuster on the camera lens module; And the camera lens module that uses at present must meet in design gently, approaches, short and small requirement, and must have accuracy and durability, guarantees to operate 200,000 times at least as focus adjuster can not get loose; And it is favourable in the focusing adjusting gear of commonly seeing with means of electromagnetic forces adjustment person, but the person's of commonly using coil is to be set in the lens barrel periphery of (comprising camera lens and outer sandwiched frame thereof), and the set magnet of coil periphery also is a whole circle formula ring-shaped magnet, cause and commonly use the shared volume of camera lens module and increase relatively, be unfavorable for miniaturization; Does not commonly use again the person and be to use shell fragment forming equilibrium state, but this shell fragment design is subject to external force deformation with electromagnetic force, comprise vibrations, playback (original position falls back) or use for a long time after, causing influences stationarity and the accuracy that lens barrel moves.

Summary of the invention

The utility model fundamental purpose is to provide a kind of autofocus lens module, and it is that utilize that a lens sleeve, a coil and a upper ledge be folded in camera lens outer placed forming a lens barrel group, and makes the coil clamping between lens sleeve and upper frame; Again two arc-shaped magnets are folded in the left and right side of coil respectively, and locate by a loam cake; Lead on the tip at the diagonal angle two that two springs is set in the inner face of a bottom respectively again, and it is upwards oppressed on the inner face of loam cake respectively; Thus, make camera lens module reach member simplification, volume-diminishedization and lens barrel group and can stablize the effect that focusing is moved.

The technical solution adopted in the utility model is: a kind of autofocus lens module comprises:

Bottom is a rectangle frame support body, and its four jiaos places are provided with to fasten with four supports and supply to be buckled into one with loam cake, and its centre is provided with a perforation for the optical path that forms camera lens, and the place, diagonal angle of its inner face is provided with two fixed orifices and leads the tip for plugging one respectively;

Two lead the tip, are vertical respectively inserting admittedly on place, bottom inner face diagonal angle two fixed orifices;

Two conducting strips are to be sticked respectively on bottom connecting different electrodes, and establish a medium pore between two conducting strips for the optical path that forms camera lens, and each conducting strip is established a perforation and passed for leading tip correspondence again;

One lower frame is provided in a side of on two conducting strips, and its centre is provided with a medium pore for the optical path that forms camera lens;

Lens sleeve is to comprise peripheral two symmetrical protruding ears of an annular frame and frame loops periphery, respectively establishes a perforation on this two lug and leads tip correspondence for two and pass, and is provided with a medium pore again for the assembling camera lens;

Two springs are to be set in respectively to lead on the tip, and the bottom of each spring is pressed against downwards respectively on two symmetrical protruding ears of lens sleeve;

Camera lens is to be installed in the medium pore of lens sleeve;

Coil is to be set in above the annular frame of lens sleeve, and its head, tail end lead are connected to conducting strip respectively;

Upper ledge, be to comprise an annular frame and frame loops periphery two buttons, and mat two buttons and lens sleeve fasten, and make upper ledge, coil and lens sleeve be folded in the periphery of camera lens and form a lens barrel group, and make the coil clamping between the corresponding annular frame of the annular frame of upper ledge and lens sleeve;

Two magnet are two symmetrical arc-shaped magnets, are folded in the left and right side outer rim of coil respectively;

Loam cake is to be buckled into one and to form a camera lens module with bottom, makes two magnet clampings between loam cake and lower frame, and two springs respectively upwards compressing on the inner face of loam cake, two spring clamps are located between the lug of the inner face of loam cake and lens sleeve;

Thus, can utilize coil and magnet interphase interaction to produce electromagnetic force and move axially to drive the lens barrel group, and two springs be set in respectively lead on the tip and resiliency supported between lens barrel group and loam cake inner face, the lens barrel group can be stablized moves axially.

Can upwards be convexly equipped with a lug respectively on described two conducting strips, and a protruding axle can correspondence on the lower frame be set, make head, the tail end lead of coil can draw and walk around protruding and be welded on the lug of conducting strip respectively.

The place, inner face diagonal angle of described bottom can establish two location slightly, can establish two pilot holes at the correspondence position of this two conducting strip and this lower frame again, goes up slightly for two location that can corresponding be linked in bottom.

Description of drawings

Fig. 1 is the stereographic map of the utility model one embodiment;

Fig. 2 is the three-dimensional exploded view of the utility model Fig. 1;

Fig. 3 is the utility model Fig. 1 one side sectional view;

Fig. 4 is the utility model Fig. 1 another side cut-open view;

Fig. 5 A～Fig. 5 J is the three-dimensional combination figure that each member makes up in regular turn in the utility model;

Fig. 6 is a coil electrically conducting manner synoptic diagram of the present utility model.

Description of reference numerals: camera lens module 1; Lens barrel group 2; Bottom 10; Support 11; Perforation 12; Fixed orifice 13; Location slightly 14; Lead the tip 20; Conducting strip 30; Pilot hole 31; Lug 32; Medium pore 33; Perforation 34; Lug 35; Lower frame 40; Medium pore 41; Pilot hole 42; Protruding axle 43; Sleeve 50; Framework 51; Lug 52; Perforation 53; Medium pore 54; Spring 60; Coil 70; Lead 71; Camera lens 80; Upper ledge 90; Framework 91; Button 92; Magnet 100; Loam cake 110.

Embodiment

For making the utility model clear and definite more full and accurate, cooperate following each preferred embodiment diagram to describe in detail as the back now:

Shown in figure 1～Fig. 4 and Fig. 5 A～Fig. 5 J figure, the utility model camera lens module 1 comprises a bottom (base) 10, two lead the tip (guide pin) 20, two conducting strips (copper plate) 30, one lower frame (bottom plate) 40, one lens sleeve (lens holder) 50, two springs (spring) 60, one coil (coil) 70, one camera lens (lens) 80, one camera lens upper ledge (top plate) 90, two magnet (magnet) 100, an and loam cake (top cover) 110, wherein, lens sleeve 50, coil 70 and upper ledge 90 are the peripheries that are folded in camera lens 80, can synchronization-moving lens barrel group 2 and form one jointly, as shown in Figure 2; And lens barrel group 2 is again and two leads the tip 20, two conducting strips 30, a lower frame 40, two magnet 100 and be interposed in jointly between bottom 10 and the loam cake 110 and form a camera lens module 1, and lens barrel group 2 can be in camera lens module 1 telescopic movable, make that camera lens 80 has far, function is adjusted in nearly focusing.

Fig. 5 A～Fig. 5 J is the three-dimensional combination figure that each member makes up in regular turn in the utility model, wherein, shown in figure 5A, bottom 10 is rectangle frame support bodys, its four jiaos places are provided with and fasten with four supports 11 for being combined into one with loam cake 110, its centre is provided with a perforation 12 for the optical paths that form camera lenses 80 again, and place, bottom 10 inner faces, two diagonal angle is provided with two fixed orifices 13 and two location slightly 14 respectively again.Shown in figure 5B, two lead the tip (guide pin) the 20th, vertically plug respectively and are fixed on two fixed orifices 13 of bottom 10 inner faces.Shown in figure 5C, two conducting strips (copper plate) 30 are conductive copper sheets of two symmetric shapes, but mat on it on pilot hole 31 and the bottom 10 location 14 cooperate slightly, two conducting strips 30 are installed in respectively on the bottom 10 to form the electrical isolation state, and respectively mat lug 32 to connect different electrodes, establish a medium pore 33 again between two conducting strips 30 for the optical path that forms camera lenses 80, be provided with two perforation 34 again and lead the tip 20 correspondences for two and pass.Shown in figure 5D, lower frame (bottom plate) 40 is provided in a side of on two conducting strips 30, but the location of its place, mat diagonal angle two pilot holes 42 and bottom 10 14 cooperates slightly, and lower frame 40 is installed on two conducting strips 30, and its centre is provided with a medium pore 41 for the optical path that forms camera lenses 80 again.Shown in figure 5E, lens sleeve 50 comprises peripheral two symmetrical protruding ears 52 of an annular frame 51 and framework 51 ring rims, respectively establishes a perforation 53 on this two lug 52 and leads the tip 20 correspondences for two and pass, and sleeve 50 is provided with a medium pore 54 for assembling camera lens 80 again.Shown in figure 5F, two springs 60 are set in two respectively and lead on the tip 20, and the bottom of two springs 60 is pressed against downwards respectively on two symmetrical protruding ears 52 of lens sleeve 50, but and two springs, 60 mats lead the tip 20 and increase the stability of telescopic movable.Shown in figure 5G, camera lens 80 is to be installed in the medium pore 54 of sleeve 50.Shown in figure 5H, coil 70 is to be set in above the annular frame 51 of sleeve 50, and makes head, the tail end of coil 70 connect the different electrodes of two conducting strips 30 respectively.Shown in figure 5I, upper ledge (top plate) the 90th cooperates sleeve 50 designs, comprise an annular frame 91 and framework 91 ring rims two buttons 92, and mat two buttons 92 fasten with sleeve 50, what make that upper ledge 90, coil 70 and lens sleeve 50 be folded in camera lens 80 places and forms a lens barrel group 2 outward; And this coil 70 is clampings between the corresponding annular frame 51 of the annular frame 91 of upper ledge 90 and sleeve 50, can reduce the wide and shared volume in footpath of coil 60.Shown in figure 5J, two magnet (magnet) 100 are two symmetrical arc-shaped magnets, be folded in the left and right side outer rim of coil 70 respectively, use and replace the whole circle ring-shaped magnet of operated by rotary motion in coil periphery, and can reduce magnet 100 shared volumes, and the head of coil 70, tail end can change different electrodes and size of current, use to cooperate magnet 100 (N, the S utmost point) to drive lens barrel group 2 action of focusing to produce upper and lower different directions and different strong and weak electromagnetic force, to use.Last with reference to shown in Figure 1, loam cake 110 is to cooperate bottom 10 designs, can be buckled into one and form a camera lens module 1 with bottom 10, and make two magnet, 100 clampings between loam cake 110 and lower frame 40 and can not be shifted; Again two springs 60 respectively upwards compressing on the inner face of loam cake 110, make between the lug 52 of inner face that two springs 60 are folded in loam cake 110 and sleeve 50, and mat is led the tip 20 correctings again, make two springs 60 tool stability deeply in compression process.

During assembling, two springs 60 can adopt the compression spring, and when loam cake 110 and bottom 10 are buckled into one, this two spring 60 can be compressive state by loam cake 110 to lower compression earlier, this moment, two springs 60 were also simultaneously to two symmetry lug 52 of lower compression lens barrel group 2 middle sleeves 50, make lens barrel group 2 parked lower dead point positions in its flexible traverse, and form burnt position far away; And the producing method of

coil

70 and 100 electromagnetic forces of magnet only can select to produce upwards (preceding) electromagnetic force, makes when burnt position far away, and coil 70 obstructed electric currents cause and do not produce electromagnetic force, and the lens barrel group 2 was not subjected to the electromagnetic force effect and rested on burnt position far away this moment; When desiring to focus action, then control an an amount of electric current by coil 70, use produce an an amount of electromagnetic force with order about lens barrel group 2 upwards (to the shooting thing) stretch out, and form nearly burnt state, and when suffered electromagnetic force on the lens barrel group 2 equals the length of spring compressed power of two springs 60 and reaches balance, lens barrel group 2 promptly rests on this one nearer burnt position, adjustment back, therefore lens barrel group 2 moves forward to nearly burnt position palpus mat electromagnetic force by burnt position far away, but by nearly burnt position return back to backward burnt position far away then mat compression spring 60 restoring force and playback, adjust effect to reach far and near focusing.

The utility model camera lens module 1 compares with known camera lens module, has following advantage at least:

(1) coil 70 of the present utility model is that direct clamping is between the upper and lower corresponding

second ring framework

51,91 of lens sleeve 50 and upper ledge 90, coil 70 is embedded in the thickness of

second ring framework

51,91, so can effectively reduce the wide and shared volume in lens barrel group 2 footpaths, make camera lens module 1 volume-diminishedization.

(2) person is arranged on coil periphery with a whole circle formula ring-shaped magnet to commonly use the electromagnetic type, makes entire outer diameter be 360 ° of increasings, and right the utility model is the left and right side periphery that mat two arc-shaped magnets 100 symmetries are folded in coil 70; Magnet 100 clampings so can simplify member and reduce magnet 90 shared volumes, make camera lens module 1 volume-diminishedization between loam cake 110 and lower frame 40 and can not be shifted again.

(3) the utility model utilizes two springs 60 to be folded between the lug 52 of the inner face of loam cake 110 and sleeve 50, and spring 60 is set in lead on the tip 20, make two springs 60 dark tool stability in compression process, can stablize and carry out distance focusing adjustment.

Again with reference to shown in figure 6, Fig. 5 C, Fig. 5 D, the head of coil 70, tail end are the different electrodes that connect two conducting strips 30 respectively, can upwards be convexly equipped with a lug 35 respectively on this two conducting strip 30, and can one protruding axle 43 be set correspondence on the lower frame 40, make the head/tail end lead 71 of coil 70 can draw and walk around protruding axle 42 respectively and be welded on the lug 35 of conducting strip 30, use preventing that lead 71 is because of lens barrel group 2 long-time movable fractures.

Above-mentioned graphic and explanation of taking off only is embodiment of the present utility model, and is non-for limiting embodiment of the present utility model; Generally be familiar with the personage of this skill, it complies with feature category of the present utility model, and other equivalence of being done changes or modifies, and all should be encompassed in the claim of following this case.

Claims

1. An autofocus lens module, characterized in that: comprising:

The bottom cover is a rectangular frame body with four fastening brackets at its four corners for fastening and integration with the upper cover, a perforation at the center for forming the optical path of the lens, and two fixing holes at the opposite corners on the inner surface for respectively inserting a guide pin;

The two guide pins are respectively vertically inserted and fixed on the two fixing holes at the opposite corners inside the bottom cover;

The two conductive sheets are respectively pasted on the bottom cover to connect different electrodes, and a central hole is provided between the two conductive sheets for forming the optical path of the lens, and each conductive sheet is provided with a perforation for the corresponding guide pins to pass through;

The lower frame is arranged on the two conductive sheets, and a central hole is provided in the center to form the optical path of the lens;

The lens sleeve includes an annular frame and two symmetrical lugs on the periphery of the frame ring. Each of the two lugs is provided with a perforation for the two guide pins to pass through, and a central hole for assembling the lens;

The two springs are respectively sleeved on the guide pins, and the bottom ends of each spring are respectively pressed downwards against the two symmetrical lugs of the lens sleeve;

The lens is fixed in the central hole of the lens sleeve;

The coil is set on the ring frame of the lens sleeve, and its head and tail wires are respectively connected to the conductive sheet;

The upper frame includes an annular frame and two buttons on the periphery of the frame ring, and the two buttons are fastened with the lens sleeve so that the upper frame, the coil and the lens sleeve are clamped on the periphery of the lens to form a lens barrel group. And the coil is clamped between the ring frame of the upper frame and the corresponding ring frame of the lens sleeve;

The second magnets are two symmetrical arc magnets, which are respectively clamped on the left and right outer edges of the coil;

The upper cover is integrated with the bottom cover to form a lens module, so that the two magnets are clamped between the upper cover and the lower frame, and the two springs are respectively pressed upwards on the inner surface of the upper cover, so that the two spring clips are set on the upper cover. between the inner face of the cover and the lug of the lens barrel;

Thus, the interaction between the coil and the magnet can be used to generate electromagnetic force to drive the lens barrel to move axially, and the two springs are respectively sleeved on the guide pins and elastically supported between the lens barrel and the inner surface of the upper cover, so that the lens barrel The group can move stably in the axial direction.

2. The autofocus lens module according to claim 1, characterized in that: a protruding piece can be protruded upwards on the two conductive sheets, and a protruding shaft can be correspondingly set on the lower frame, so that the head and tail end of the coil The wires can be respectively drawn out and welded on the protruding pieces of the conductive sheet by going around the protruding shafts.

3. The autofocus lens module according to claim 1, characterized in that: two positioning pins can be set at the inner corners of the bottom cover, and two positioning pins can be set at the corresponding positions of the two conductive sheets and the lower frame. The positioning holes are provided for correspondingly fitting on the two positioning points of the bottom cover.