CN1532822A - Optical pick-up driver - Google Patents
Optical pick-up driver Download PDFInfo
- Publication number
- CN1532822A CN1532822A CNA031160069A CN03116006A CN1532822A CN 1532822 A CN1532822 A CN 1532822A CN A031160069 A CNA031160069 A CN A031160069A CN 03116006 A CN03116006 A CN 03116006A CN 1532822 A CN1532822 A CN 1532822A
- Authority
- CN
- China
- Prior art keywords
- lens carrier
- lens
- optical pick
- actuator
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
The present invention relates to light pick-up driver, and its lens stand is divided into cover part and bottom part to separate the inclined operation from orbit grasping and focusing operation and thus to eliminate crosstalk. The light pick-up driver includes objective to focus the laser light source onto the record medium; lens stand to support the objective and separated for independent inclined operation; magnetic loop part to drive the objective; inclined support part on two sides of the lens stand to support the lens stand; magnetic loop gauge inside the separated lens stand to drive inclined operation; and hooked part to connect the separated lens stand.
Description
Technical field
The present invention relates to a kind of optical pick-up actuator, relate in particular to a kind of lens carrier that will support object lens and be divided into cap and bottom, the only moving cap that separates when oblique operation, the optical pick-up actuator of crosstalking that can when the driver device is followed the trail of disc tracks, prevent.
Background technology
Fig. 1 is the planimetric map of existing optical pick-up actuator structure.
As shown in Figure 1, comprising: object lens 3, the light wave with the laser diode emission focuses on the optical disc information record surface; Lens carrier 1 is inserted in internal diameter with object lens 3; Magnet 10, with the both sides of lens carrier 1 each with a certain distance from and dispose; Yoke overlaps 9, is positioned at the back side of magnet 10, prevents the magnetic flux leakage that magnet 10 produces; Focusing coil 5 twists in lens carrier 1 outside; Track coil 7, its winding direction is vertical with the winding direction of focusing coil 5, respectively establishes 2 on focusing coil 5; Metal spring 8 is positioned at the both sides of lens carrier 1, plays support sector's effect; Baffle portion 11, fixing metal spring 8.
Comprise the optical pick-up actuator of said structure, working method is as follows,
The optical pick-up actuator utilization is for the focusing operation of object lens 3 and grasp rail operation and be located at the magnetic field force of the magnet 10 of lens carrier about 1, about carrying out, the operation of move left and right.The driving force of such optical pick-up actuator by in magnet 10 and yoke cover 9 magnetic field spaces that form, when applying electric current in track coil 7 and focusing coil 5, produces according to long-range navigation thatch (Lorenz) power of Fu Laiming (Fleming) Left Hand Rule.
Apply electric current when track coil 7, make object lens about 3 operations, apply electric current when focusing coil 5, object lens 3 are operated up and down.
But existing optical pick-up actuator, if when carrying out oblique driving operation, then operate whole lens carrier, when grasping track and focusing operation, cause revisal is oblique metal spring 8 tensions, and rail operation and focusing operation are grasped in influence, can not read orbital data accurately, and read the crosstalk phenomenon of next door orbital data.
Summary of the invention
In order to solve the shortcoming of prior art, the purpose of this invention is to provide a kind of optical pick-up actuator, the lens carrier of optical pick-up actuator is divided into cap and bottom, like this, during oblique operation on carrying out radial direction, the cap of moving lens carrier only is even grasping under the situation that rail operation and focusing operation mix, the powerful tension of metal spring phenomenon can not take place yet, thereby avoids the optical pick-up actuator of crosstalk phenomenon.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of optical pick-up actuator is characterized in, comprising:
Object lens, the light that LASER Light Source is launched focuses on optical recording media;
Lens carrier supports described object lens, is divided into to carry out oblique operation independently;
Magnetic circuit portion drives described object lens;
Supporting tool, in described lens carrier both sides with the support of lens support.
Description of drawings
Fig. 1 is the planimetric map of existing optical pick-up actuator structure;
Fig. 2 is the planimetric map of optical pick-up actuator structure of the present invention;
Fig. 3 is the outboard profile of the lens carrier cap of optical pick-up actuator of the present invention;
Fig. 4 be optical pick-up actuator of the present invention on lens carrier bottom in conjunction with the structure of lens carrier cap;
Fig. 5 is the oblique operation of optical pick-up actuator of the present invention;
Fig. 6 is the focusing operation after the oblique operation of optical pick-up actuator of the present invention.
Embodiment
Optical pick-up actuator for achieving the above object is characterized in, comprising: object lens, with focusing on the optical recording media that LASER Light Source is launched; Lens carrier supports object lens; Magnetic circuit portion drives object lens; Supporting tool, in the lens carrier both sides with the support of lens support;
Also comprise, be positioned at the inboard of the lens carrier both sides of separation, the magnetic circuit meter that carries out oblique driving; Supporting tool is oblique supporting tool; The lens carrier that separates by fixed hook instrument connect.
In the optical pick-up actuator among the present invention, lens carrier is divided into cap and bottom, the cap of the lens carrier that object lens are positioned at is only done oblique operation, rail operation and focusing operation are grasped in the bottom, thereby when carrying out oblique operation, do not influence the metal spring of focus, track, therefore can prevent the generation of crosstalking.
Below in conjunction with accompanying drawing,, be elaborated to embodiments of the invention.
Fig. 2 is the planimetric map of optical pick-up actuator structure of the present invention.
As shown in Figure 2, comprising: object lens 23, the light wave with the laser diode emission focuses on the optical disc information record surface; Lens carrier cap 21 supports object lens 23; Lens carrier bottom (not expression in the drawing) combines and disposes with lens carrier cap 21; Magnet 30, two lateral extent certain distances in the lens carrier bottom are relative to the configuration; Main yoke cover 29 is positioned at magnet 30 back sides, and the magnetic flux that stops magnet 30 to produce is revealed; Focusing coil 25 is positioned at lens carrier bottom, along the lens carrier bottom periphery and spiral; Track coil 27 is relative to the configuration with magnet 30 on the focusing coil 25, and winding direction is vertical with the existing direction of the volume of focusing coil 25; Metal spring 32 is positioned at lens carrier cap 21, the time plays the support effect carrying out oblique operation; Metal spring 28, each fixed configurations when grasping rail operation and focusing operation, plays the support effect in the lens carrier bottom.
In addition, though do not indicate on the drawing, the light coil of replacement is arranged in the peripheral region of lens carrier cap 21 both sides, this light coil is inserted in the lens carrier bottom inside; The inboard of lens carrier bottom disposes from the bottom light yoke cover and the magnet (with reference to Fig. 4) plugging, form magnetic field when oblique operation, around the light coil of lens carrier cap 21, disposes coil.
Comprise the optical pick-up actuator of said structure, working method is as follows:
Apply electric current in focusing coil 25 and track coil 27, because above-mentioned two coil configuration are in the field region that the magnet 30 of lens carrier bottom outside produces,, can make object lens grasp rail operation and focusing operation.In addition, in order to carry out oblique operation, the lens carrier bottom fixes with the light yoke cover and the magnet that are configured in the lens carrier bottom inside according to the coil of the light coil that is configured in lens carrier cap 21, has only said lens support cap 21 to carry out oblique operation.
Fig. 3 is the outboard profile of the lens carrier cap of optical pick-up actuator of the present invention.As shown in the figure, the light coil 21a that both sides peripheral part is reset and be positioned at the central part both sides, the lock section 21b that combines with the lens carrier bottom.Tail end around light coil 21a, configuration coil (not indicating among the figure) makes it to carry out oblique operation; When lock section 21b carries out oblique operation at lens carrier cap 21, play the effect of turning axle.
Fig. 4 is, optical pick-up actuator of the present invention on the lens carrier bottom in conjunction with the structure of lens carrier cap.
As shown in Figure 4, the bottom in lens carrier bottom 22 has disposed light yoke cover 36 and magnet 35, can form magnetic field when oblique operation; Top in lens bottom 22 is connected with the lens carrier cap 21 that supports object lens.
Fig. 5 be optical pick-up actuator of the present invention oblique line operation.The change of rugged property takes place when curved in CD, and object lens are come with the angle tilt that equals camber, in the optical pick-up actuator of the present invention, has only the cap of lens carrier to rotate at a certain angle, and the bottom of lens carrier can not rotate.
Fig. 6 is the focusing operation after the oblique line of optical pick-up actuator of the present invention is operated.As shown in the figure, under the situation of lens carrier cap with certain angle tilt, drive, carry out focusing operation up and down by the focusing coil that is configured in the said lens frame bottom.Because the extracting rail operation of optical pick-up actuator of the present invention and focusing operation are to operate according to the metal spring that is fixed on the lens carrier cap, thereby carry out carrying out focusing operation again after the tilt operation, tilt operation can not have influence on yet and focus on the used metal spring of behaviour, and the angle of inclination that therefore can keep original also can prevent to crosstalk.
As previously mentioned, optical pick-up actuator of the present invention, the lens carrier that optical pick-up actuator is used partly is divided into cap and bottom, make the tilt operation that grasps on rail operation and focusing operation and the radial direction, therefore operate by the metal spring that separates, prevented by tilt operation and grasp rail operation and focusing operation carries out and crosstalking of occurring simultaneously.
Simultaneously, separate pitch drives portion, and can reduce the size of the drive current that is used for tilt operation, therefore have the advantage that reduces power consumption.
The present invention is not limited in the above embodiments, and knowing those skilled in the art can not break away under the situation of main points of the present invention in the claim tolerance band, can carry out numerous variations.
Claims (3)
1. an optical pick-up actuator is characterized in that, comprising:
Object lens, the light that LASER Light Source is launched focuses on the optical recording media;
Lens carrier supports described object lens, is divided into to carry out oblique operation independently;
Magnetic circuit portion drives described object lens;
Supporting tool, in described lens carrier both sides to support described lens carrier.
2. optical pick-up actuator as claimed in claim 1 is characterized in that, described supporting tool is the supporting tool that radius tilts.
3. optical pick-up actuator as claimed in claim 1 is characterized in that, the lens carrier of described separation by fixed hook instrument connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031160069A CN1532822A (en) | 2003-03-26 | 2003-03-26 | Optical pick-up driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031160069A CN1532822A (en) | 2003-03-26 | 2003-03-26 | Optical pick-up driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1532822A true CN1532822A (en) | 2004-09-29 |
Family
ID=34284543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031160069A Pending CN1532822A (en) | 2003-03-26 | 2003-03-26 | Optical pick-up driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1532822A (en) |
-
2003
- 2003-03-26 CN CNA031160069A patent/CN1532822A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1194341C (en) | Optical head actuator | |
| CN1356693A (en) | 4-axle drive actuator for optical pick-up | |
| CN1397941A (en) | Optical pick-up device actuator | |
| CN1744214A (en) | Objective lens driving device | |
| CN1238846C (en) | Optical pickup device, its actuating device, and optical recording reproducing device using same | |
| CN1190784C (en) | Light collecting device and method of installing said light collecting device | |
| CN1744212A (en) | Objective lens holder for an objective lens driving device | |
| CN1179332C (en) | Optical read/write system | |
| US8199613B2 (en) | Objective lens actuator and a thin-sized optical pickup with magnetic circuit having different lengthed magnets | |
| CN1441414A (en) | Optical pick-up head actuator and optical recording/replaying device using it | |
| CN1197978A (en) | Optical pick-up apparatus | |
| CN1532822A (en) | Optical pick-up driver | |
| CN1208768C (en) | Objective driver and optical head therewith | |
| CN1558405A (en) | Light pickoff actuator and optical recording and/or reproducing apparatus using the actuator | |
| CN1201307C (en) | Optical mechanism driving device | |
| CN1841534A (en) | Optical pickup | |
| CN1124393A (en) | Optical pickup device | |
| CN1609966A (en) | Supporting member for an optical pick-up actuator, and optical pick-up actuator and optical recording/reproducing apparatus using the same | |
| CN1355918A (en) | Optical pick-up apparatus | |
| CN1311446C (en) | Objective driving device and optical disc device | |
| US20050229197A1 (en) | Optical pickup actuator and optical recording and/or reproducing apparatus employing the same | |
| CN1287367C (en) | Light head device | |
| JP3489115B2 (en) | Pickup head | |
| CN1127073C (en) | Disk apparatus | |
| CN1296259A (en) | Objective lens driving device for laser optical head |
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 |