CN1991431A - Object lens mounting structure of lens carrier - Google Patents
Object lens mounting structure of lens carrier Download PDFInfo
- Publication number
- CN1991431A CN1991431A CNA200510112445XA CN200510112445A CN1991431A CN 1991431 A CN1991431 A CN 1991431A CN A200510112445X A CNA200510112445X A CN A200510112445XA CN 200510112445 A CN200510112445 A CN 200510112445A CN 1991431 A CN1991431 A CN 1991431A
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- China
- Prior art keywords
- lens
- carrier
- object lens
- adhesive
- lens carrier
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Abstract
The invention relates to object lens fixup reinforce structure of optical pick-up regulating device especially in the lens holding frame. The object lens fixup reinforce structure of lens holding frame includes lens bond guiding device, and several faces can be formed in appropriate location according to the combined edges of lens holding frame, the two faces face to face, and open at the object lens direction to seal the lens bond in the lens. That can reduce efficiently the altitude resonance caused by the elastic mode of lens holding frame.
Description
[technical field]
The present invention relates to the light picker regulating device, particularly be mounted to the objective lens fitting structure of lens carrier and the light picker regulating device that can be fixed for object lens.
[background technology]
The normal optical pickup adjusting apparatus moves the mobile device (moving part) that object lens are installed, and makes that relative position keeps certain between object lens and CD, tracking illumination disk track, the effect of playing record or playing record data in the CD.This regulator is moved with the moving coil form according to permanet magnet magnetic force, and object lens are moved to desirable position.This moment, mobile device was promptly focused and the tracking direction motion aspect mutually perpendicular two.Tiltedly move the driving of direction and also can carry out,, should reduce similar unnecessary vibrations such as rotation for reducing the error of optical signalling.
Fig. 1 is the formation synoptic diagram of prior art light picker regulating device.
With reference to Fig. 1, its formation comprises that object lens 101 install at central part, and the outside is wound with the lens carrier (lens holder, 102) of the coil 105,106 that is used to follow the tracks of and focuses; Relative with coil 105,106 directions of said lens support 102, be arranged at magnet (magnet, 103 and magnetic head (Yoke, 104 of pedestal (base); Lens carrier about in the of 102 in the side end fix, and a plurality of up and down lines that support him hang (wire suspension, 107); In lens carrier 102 1 sides, braking (damper) support 109 of fixing wired suspension 107 1 ends.Symbol 108 is formed at the top and the bottom of lens carrier 102 as fixing base among the figure, and the end welding of line suspension 107 is fixed.
The traditional light picker regulating device identical with the above explained with reference to institute's accompanying drawing.
With reference to Fig. 1, object lens 101 are positioned at the centre of lens carrier 102, for focusing is wound with focusing coil 105 in each corner angle portion of lens carrier 102, are wound with tracking coil 106 for following the tracks of in a left side/right flank central part of lens carrier 102.
In addition, with above-mentioned coil 105,106 aspect relative positions promptly, be extruded with a plurality of magnetic heads 104 of ferromagnetism material in the left and right sides of lens carrier 102, be fixed with magnet 103 respectively at magnetic head front.Magnetic head 104 is by forming one with the integrated means of light picker base (not shown).
The upper and lower side central part of lens carrier 102 is combined with fixing base 108, the one end welding of two parallel lines suspensions 107 in each fixing base 108, and the other end of line suspension 107 is fixed by the vibroshock (damper is not shown) of braking (damper) support 109.
Here, subtract the characteristic that declines for line suspension 107 is had in brake holder 109 inside, and be combined with vibroshock (not shown).Be combined with mainboard (not shown) in the outside, make line hang the welding of 107 other ends and fixed.
Said lens support 102 hangs 107 by line and rises, and line hangs 107 electric current is provided respectively.
In said structure, the tracking coil 106 that 102 two side central parts of lens carrier adhere to through out-of-date, is pressed certain direction generation magnetic flux (magnetic flux) as electric current in suitably direction winding mutually.It produces reacting force and repulsive force by fixing magnet 103 and electromagnetic force.By this reacting force and repulsive force, lens carrier 102 moves by tracking direction (forward and backward) and moves, and the tracking servo that is used for the revisal tracking error is operated.
In addition, focusing coil 105 horizontal direction different with tracking coil twined, when electric current flows, the direction of magnetic flux takes place at above-below direction, the magnetic flux and the electromagnetic force of fixed magnet are had an effect, produce acting force in vertical direction to coil, lens carrier 102 is gone up in focusing direction (upper and lower) and is moved, and operation is used for the focusing servomechanism installation of revisal.
The outside of identical therewith lens carrier 102 is wound with coil 105,106, together coil is moved mobile (moving) coil mode that is called with lens carrier 102.Coexisting mutually therewith is attached with magnet on the lens carrier outside, together magnet is moved the moving magnet mode that is called with lens carrier.The long-range navigation thatch power that not come bright lefft-hand rule by the move mode utilization of magnet and coil this moment.
Fig. 2 is the structural representation that existing lens are installed object lens.
With reference to Fig. 2, lens carrier 102 central parts are equipped with lens 101.For this lens 101 are installed, be formed with lens installation portion 110 at lens carrier 102 central parts.Be formed with light beam at the central part of lens installation portion 110 and pass through the hole.Be extruded with the lens guide shaft fixing unit 113 that object lens 101 are supported at certain position (about 3-4 position).
Said lens guide shaft fixing unit 113 forms simple erect type structure, forms definitely at interval with lens 101, is coated with bonding agent between said lens guide shaft fixing unit 113 and object lens 101, and object lens are fixed on the lens carrier 102.
Even cemented objective 101 on the open architecture characteristic of identical lens guide shaft fixing unit 113 therewith, but dying down property of bonding agent epistasis, be subjected to lens adhesive influence regulating device resonance the time, discrepancy in elevation resonance characteristics appears under characteristic frequency.Compare with the resonance peek in the actual lens support thus, the resonance peek of measuring in the object lens is bigger.
In addition, regulating device in the CD reflection face for when the depth of focus is focused, tracking illumination track on a drum or a disk, and in addition certain control will reach control successfully and should avoid regulator that unnecessary vibration takes place when regulating device drives.Particularly nearest, because should improve the controlled frequency zone,, but started the resonance that self elastic model of lens carrier assembly produces in the high power speed light storage device so the requirement on this specific character is just more and more urgent, gain margin is diminished, cause control performance to descend.
[summary of the invention]
The present invention proposes for addressing the above problem just, and the outside certain position of object lens is formed with the lens junction surface that strengthens lens carrier intensity.
In addition, scioptics of the present invention junction surface can be directed to inside with lens adhesive, so can strengthen the intensity of lens conjugation grade.
To achieve these goals, light picker regulating device lens mounting structure of the present invention is,
For central part object lens are installed, are equipped with the light picker regulating device of moving lens bracing frame,
Comprise the lens adhesive guide piece, its edge surface of installing according to object lens in lens carrier in position is formed with a plurality of, and its two sides is relative, the lens adhesive that smear bootable inside, and in the open formation of object lens direction.
More satisfactory is, outstandingly in the inside of lens adhesive guide piece is formed with bonding reinforcement projection, like this can two minutes the groove smeared of lens adhesive.
More satisfactory is that the lens adhesive guide piece can form
Or " V " or " U " word shape.
Of the present invention lens carrier objective lens fitting structure identical with the above, play in high density compact disc high power speed, in the drive system of record etc., strengthen the objective lens fitting structure that is installed in lens carrier, reduce the resonance peek size in the object lens effectively, thereby can realize the stable hierarchy of control in the high power speed drive system.
[description of drawings]
Fig. 1 (a) is the summary plane and the front schematic view of prior art light picker regulating device (b);
Fig. 2 is in the prior art light picker regulating device, the objective lens fitting structure synoptic diagram of object lens bracing frame;
Fig. 3 is a invention process example light pick-up regulator, the objective lens fitting structure synoptic diagram of lens carrier;
Fig. 4 is the objective lens fitting structure part expander graphs of the lens carrier of the invention process example.
[embodiment]
Below with reference to accompanying drawings embodiments of the invention are elaborated.
Fig. 3 is a lens carrier objective lens fitting structure synoptic diagram of the present invention.With reference to Fig. 3, its formation comprises: the lens carrier 202 that object lens 201 is installed and moves in the multiaxis direction at central part; The lens installation portion 210 that is used to support object lens 201 at the central part of lens carrier 202; Be extruded with a plurality of certain angles that have on lens installation portion 210, the two sides relative to each other and the open lens adhesive guide part 211 of object lens direction; The lens adhesive groove 212 that in the lens adhesive guide piece, forms; For in two fens lens adhesive grooves, in lens adhesive guide part 211, press the outstanding bonding reinforcement projection 213 of object lens direction.
The objective lens fitting structure of the lens carrier of identical therewith the invention process example is illustrated with reference to accompanying drawing.
With reference to Fig. 3 and Fig. 4, lens carrier 202 is formed with light beam by hole (not shown), can make central part that object lens 20l is installed, and is formed with lens installation portion 210 at light beam by the outside, hole, and object lens 201 are installed.For starting lens carrier 202, in two sides, be wound with coil in addition, for example focusing and tracking coil 205,206.
Said lens bonding agent guide piece 211 two sides are relative, in any one direction, promptly give prominence to the open shape of object lens direction, for example can form " U ", and " C ", " E ",
Any one also can be semisphere or once above crooked structure in addition in " V " word shape.
In addition, lens adhesive guide piece 211 its inner faces also can form concaveconvex shape, because of the relative structure in two sides, are formed with bonding agent groove 212 inner.And as other example, lens adhesive guide piece 211 also can together form a top part with loam cake.
In addition, lens adhesive guide piece 211 can form outstanding bonding reinforcement outstanding 213 in inner object lens direction, here, bonding reinforcement outstanding 213 can be more than one, highly compare and to hang down with bonding agent guide piece 211, bonding in addition reinforcement projection 213 also can be given prominence in the lens installation portion 210, also can form concaveconvex shape.
This lens installation portion 210 inside are coated with lens adhesive (not shown) in lens adhesive guide piece 211 inside after object lens 201 are installed.This moment, lens adhesive comprised UV bonding agent or cementing agent.Because the structure in the lens adhesive guide piece 210 can not flow out to the outside in lens adhesive groove 212, at this moment,, take lens adhesive to be connected to each other in the groove 212 two minutes structure according to bonding reinforcement projection 213, make bonding agent more firm.
Be coated with lens adhesive between this lens adhesive guide piece 201 and the object lens lateral surface, object lens 201 can be than more firmly being installed on the lens carrier 202 now.Said lens bonding agent guide piece 211 is provided with and is at least more than two, can exchange mutually with existing lens guiding firmware to be provided with.
Identical therewith, on the central part of lens carrier 202, scioptics bonding agent guide piece 211 inner binders are installed object lens 201, further strengthen the intensity of bonding agent.Actual lens support 202 has improved weak link when moving, can improve the phenomenon that gain margin that the high difference resonance that causes because of lens carrier 202 self elasticity produces diminishes.
By above-mentioned explanation, those skilled in the art can carry out various change and modification fully in the scope that does not depart from the technology of the present invention thought.Therefore, technical scope of the present invention is not limited to the content of instructions, must determine its technical scope according to interest field.
Claims (3)
1, the objective lens fitting structure of lens carrier is characterized in that, comprising:
The lens adhesive guide piece, its edge surface of installing according to object lens in lens carrier in position is formed with a plurality of, and its two sides is relative, the lens adhesive that smear bootable inside, and in the open formation of object lens direction.
2, as the objective lens fitting structure of claim item 1 described lens carrier, it is characterized in that,
Outstandingly in the inside of lens adhesive guide piece be formed with bonding reinforcement projection, like this can two minutes the groove smeared of lens adhesive.
As the objective lens fitting structure of claim item 1 described lens carrier, it is characterized in that 3, the lens adhesive guide piece can form
Or " V " or " U " word shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510112445XA CN1991431A (en) | 2005-12-30 | 2005-12-30 | Object lens mounting structure of lens carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200510112445XA CN1991431A (en) | 2005-12-30 | 2005-12-30 | Object lens mounting structure of lens carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1991431A true CN1991431A (en) | 2007-07-04 |
Family
ID=38213817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200510112445XA Pending CN1991431A (en) | 2005-12-30 | 2005-12-30 | Object lens mounting structure of lens carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1991431A (en) |
-
2005
- 2005-12-30 CN CNA200510112445XA patent/CN1991431A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |