CN100397503C - Object lens carrier structure for optical read-write head - Google Patents
Object lens carrier structure for optical read-write head Download PDFInfo
- Publication number
- CN100397503C CN100397503C CNB2004101022288A CN200410102228A CN100397503C CN 100397503 C CN100397503 C CN 100397503C CN B2004101022288 A CNB2004101022288 A CN B2004101022288A CN 200410102228 A CN200410102228 A CN 200410102228A CN 100397503 C CN100397503 C CN 100397503C
- Authority
- CN
- China
- Prior art keywords
- object lens
- circuit board
- printed circuit
- pcb
- lens carrier
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
The present invention relates to an object lens carrier structure for an optical read-write head, which is arranged next to at least one magnetic field generating device. The object lens carrier structure slightly moves through a magnetic field which is generated by the magnetic field generating device. The object lens carrier structure for an optical read-write head comprises an object lens and a thin plate which is provided with a hole, wherein the object lens is arranged in the hole to make light rays pass, and the surface of the thin plate is provided with a conductive coil. The magnetic field which is generated by the magnetic field generating device influences the conductive coil in which current flows to make the object lens carrier structure move.
Description
Technical field
The invention relates to a kind of object lens carrier device, refer to be used in the object lens carrier device in the optical read/write head especially.
Background technology
Because of discs is subjected to a large amount of causes of using in market, be a kind of common Storage Media read-write equipment in order to the CD player of writable disc sheet, the wherein core parts in CD player are optical read/write head (optical pickup head).
See also Fig. 1, Fig. 1 is the synoptic diagram of known technology optical read/write head 2.Optical read/write head 2 is removable in CD player, in discs below with the writable disc sheet on the data of diverse location.Also comprise an object lens carrier device 4 in the optical read/write head 2, and two vicinities are arranged at the magnetic field generation device 6 of object lens carrier device 4 relative two sides.Object lens carrier device 4 is seized object lens (objective lens) 404 on both sides by the arms to form by the object lens clamping apparatus (objective lens holder) 402 of a box-shaped.
Object lens clamping apparatus 402 outer side lateral dominances twine out focusing actuation coil (focusing coil) 10 with enameled wire, in addition, in two sides of contiguous magnetic field generation device 6, utilize supporting construction to seek rail actuation coil (tracking coil) 12 to twine out in addition.Side as figure object lens clamping apparatus 402 has two to seek rail actuation coil 12, has 4 in relative two sides one and seeks rail actuation coil 12.
Optical read/write head 2 also comprises a plurality of elastic cantilevers 8, is in order to resiliency supported object lens carrier device 4, and allows that object lens carrier device 4 moves a little.Object lens carrier device 4 is and two magnetic field generation devices, 6 contiguous settings, by the magnetic field that this magnetic field generation device 6 is produced, adds that aforementioned these actuation coils 10,12 pass to electric current, then can move this object lens carrier device 4 a little.
Pass to electric current if focus on actuation coil 10, then object lens carrier device 4 can upper and lowerly a little move to D1, with the light of controlling optical read/write head discs is focused on.If seek rail actuation coil 12 and pass to electric current, then object lens carrier device 4 a little forward and backward D2 move, to desire the data rail of the data that reads in a plurality of data rails on the light alignment light disc of control optical read/write head.
Yet product has the trend of microminiaturization in recent years, as mini disc machine (Small Form Factor Optical Disk Drive is promptly arranged in the CD player; SFFO) come out, following many spaces that account for of the object lens clamping apparatus 402 phase shapes of box-shaped make the design in the CD player space utilization difficult.And, reduce the element cost if can further change design, all be the target of institute's active pursuit in the product design.
In addition, need to use the coiling facility that enameled wire is wrapped on the object lens carrier device in the general production run, and the quality of enameled wire winding will directly influence the action effect between coil and magnetic field; And, add under the requirement of coiling sperm quality that the production method that utilizes enameled wire to twine needs high production cost and duration with the trend of showing microminiaturization.
Therefore, fundamental purpose of the present invention is to provide a kind of object lens carrier device that is used in the optical read/write head, to address the above problem.
Summary of the invention
Purpose of the present invention is improved the object lens clamping apparatus of known box-shaped by a kind of object lens carrier device that is used in the optical read/write head, except that make the object lens carrier device more light, thin, also significantly reduce element cost and production time.
The invention relates to a kind of object lens carrier device that is used in the optical read/write head (optical pickup head), be and at least one magnetic field generation device is contiguous is provided with, by magnetic field that this magnetic field generation device produced to move this object lens carrier device a little.This object lens carrier device is to comprise object lens (objective lens) and a printed circuit board (PCB), and printed circuit board (PCB) is to adopt printed circuit board (PCB) (Printed Circuit Board; PCB).
One hole is set in this printed circuit board (PCB), and these object lens are to be arranged at this hole so that light passes through.This printed circuit board surface also is provided with a conductive coil (when printed circuit board (PCB) adopts printed circuit board (PCB), because printed circuit board (PCB) is a sandwich construction, satisfy described conductive coil and can be arranged at arbitrary laminar surface in the printed circuit board (PCB)), by the conductive coil of the influence of magnetic field circulating current that this magnetic field generation device produced, this object lens carrier device is moved.When printed circuit board (PCB) was printed circuit board (PCB), this conductive coil was the metallic circuit for this printed circuit board surface.
Further, this conductive coil is can comprise to seek a rail actuation coil (tracking coil) and a focusing actuation coil (focusing coil).This focusing actuation coil is to be provided with printing around the printed circuit board surface of this hole, and this seeks the rail actuation coil is also to print to be arranged at this printed circuit board surface.This seeks the corresponding magnetic field generation device in corresponding these magnetic field generation devices of rail actuation coil, to produce the power that forward and backward moves.This focuses on another the corresponding magnetic field generation device in corresponding these magnetic field generation devices of actuation coil, and is upper and lower to mobile power to produce.
In addition, these printed circuit board (PCB) both sides can be respectively provided to a few protruding part, and the protruding part of these both sides also in correspondence with each other.At this moment, this conductive coil is only to refer to this focusing actuation coil, and this object lens carrier device then comprises in addition seeks the rail actuation coil.The printed circuit board surface that this focusing actuation coil is still around this hole is provided with printing, and this is sought the rail actuation coil and then is wrapped in this protruding part to be arranged on this printed circuit board (PCB).This seeks the rail actuation coil to should magnetic field generation device, and to produce the power that forward and backward moves, this focuses on the corresponding same magnetic field generation device of actuation coil, and is upper and lower to mobile power to produce.
Further specify, this optical read/write head also comprises a plurality of elastic cantilevers, be in order to this object lens carrier device of resiliency supported, and make this object lens carrier device be fixed in this optical read/write head, and allow that this object lens carrier device moves a little, and after this object lens carrier device moves, provide the restoring force of this object lens carrier device playback institute palpus.This elastic cantilever can adopt conductive material, with the electric current that provides this conductive coil to be circulated.
Therefore, be used in object lens carrier device in the optical read/write head by the present invention, utilize printed circuit board (PCB) as printed circuit board (PCB), the object lens clamping apparatus that replaces known box-shaped, more light, thin except making the object lens carrier device, significantly reduce outside the cost of element, utilize the printed circuit board surface metallic circuit to make conductive coil, more can reduce because of spent man-hour, the wage of winding enameled wire, and directly save expending of enameled wire material cost.
Description of drawings
Can be further understood by the following detailed description and accompanying drawings about the advantages and spirit of the present invention, wherein:
Fig. 1 is the synoptic diagram of known technology optical read/write head;
Fig. 2 is the synoptic diagram of object lens carrier device first embodiment of the present invention;
Fig. 3 is that the present invention focuses on the side schematic view of actuation coil on printed circuit board (PCB);
Fig. 4 is the synoptic diagram of object lens carrier device second embodiment of the present invention; And
Fig. 5 is the transversary synoptic diagram of object lens carrier device of the present invention.
Embodiment
See also Fig. 2, Fig. 2 is the synoptic diagram of object lens carrier device 30 first embodiment of the present invention.The invention relates to a kind of object lens carrier device 30 that is used in the optical read/write head (optical pickup head), optical read/write head sees also Fig. 1, repeats no more in this.Object lens carrier device 30 is and at least one magnetic field generation device as described in Figure 1 is contiguous is provided with, by magnetic field that this magnetic field generation device produced with mobile object lens carrier device 30 a little.As Fig. 2, object lens carrier device 30 is to comprise object lens (objective lens) 32 and one printed circuit board (PCB) 34.Better embodiment is that printed circuit board (PCB) 34 adopts printed circuit board (PCB) (Printed Circuit Board; PCB) to make.
One hole is set in the printed circuit board (PCB) 34, object lens 32 be with inlay or the mode of sticking be arranged at this hole so that light be able to by.Printed circuit board (PCB) 34 surfaces also are provided with a conductive coil 40 (when printed circuit board (PCB) 34 adopts printed circuit board (PCB), because printed circuit board (PCB) is generally sandwich construction, satisfy described conductive coil 40 and can be arranged at arbitrary laminar surface in the printed circuit board (PCB)), by the conductive coil 40 of the influence of magnetic field circulating current that this magnetic field generation device produced, object lens carrier device 30 is moved.When printed circuit board (PCB) 34 was printed circuit board (PCB), conductive coil 40 was the metallic circuits for this printed circuit board surface, can utilize the etched mode of image to make.
Further specify, printed circuit board (PCB) 34 both sides are respectively provided to a few protruding part 42, and the protruding part 42 of both sides also in correspondence with each other.Then 2 protruding parts 42 are arranged on one side as Fig. 2, both sides then one have 4.In first embodiment of Fig. 2, conductive coil 40 is to be a focusing actuation coil (focusing coil) 44, and 30 of object lens carrier devices comprise in addition seeks rail actuation coil (tracking coil) 46.Printed circuit board (PCB) 34 surfaces that focus on actuation coil 44 and be around this hole are provided with printing, seek 46 of rail actuation coils and are wrapped in protruding part 42 to be arranged on the printed circuit board (PCB) 34.Seeking 46 pairs of rail actuation coils should magnetic field generation device, with the power that produces as Fig. 1 forward and backward D2 moves, focuses on actuation coil 44 and to should magnetic field generation device, with generation as the upper and lower power that moves to D1 of Fig. 1.
In addition, optical read/write head also comprises a plurality of elastic cantilevers 50, is in order to resiliency supported object lens carrier device 30, and allows that object lens carrier device 30 moves a little, and after object lens carrier device 30 moves, provides the restoring force of object lens carrier device 30 playback institute palpuses.But, so the optimal design mode of these elastic cantilevers 50 is to be four, and connect, and stretch out to be fixed on this optical read/write head from four symmetrical ends of printed circuit board (PCB) 34 because object lens carrier device 30 is the main structure body with printed circuit board (PCB) 34.Wherein, elastic cantilever 50 is to be conductive material, and elastic cantilever 50 is connected with conductive coil 40, and the electric current in order to provide conductive coil 40 to be circulated.
Cooperate Fig. 2 please further to consult Fig. 3, Fig. 3 is that the present invention focuses on the side schematic view of actuation coil 44 on printed circuit board (PCB) 34.In the present embodiment, focusing on actuation coil 44 is with the spiral fashion setting, and the outside one end that spiral fashion focuses on actuation coil 44 is directly to extend to the edge from this printed circuit board surface, to be connected to the wherein elastic cantilever 50 of a conductive material.The other end (an inboard end) that focuses on actuation coil 44 is to run through printed circuit board (PCB) 34 to printed circuit board (PCB) 34 opposite side surfaces, and extends to the edge from printed circuit board (PCB) 34 opposite side surfaces, with the elastic cantilever 50 that is connected to another conductive material.All be arranged on the surface, the same side of printed circuit board (PCB) 34 as elastic cantilever among the figure 50, be penetrated into the focusing actuation coil 44 on printed circuit board (PCB) 34 opposite side surfaces, penetrate the surface of getting back to printed circuit board (PCB) 34 tool elastic cantilevers 50 again, so that be connected to another elastic cantilever 50.
Supplementary notes, printed circuit board (PCB) is a sandwich construction on the practice, described focusing actuation coil 44 is with the spiral fashion setting, a plurality of spiral fashions can be set in sandwich construction, and run through sandwich construction and make a plurality of spiral coils be interconnected into one group to focus on actuation coil 44, principle is similar, no longer gives unnecessary details with diagram at this.
See also Fig. 4, Fig. 4 is the synoptic diagram of object lens carrier device 30 second embodiment of the present invention.Described conductive coil 40 also can be to comprise to seek rail actuation coil (tracking coil) 46 and one focusing actuation coil (focusing coil) 44.In the present embodiment, printed circuit board (PCB) 34 surfaces that focus on actuation coil 44 and be around this hole are provided with printing, and at this moment, seeking rail actuation coil 46 is also to print to be arranged at printed circuit board (PCB) 34 surfaces.Focus on actuation coil 44 correspondences magnetic field generation device as described in Figure 1, to produce as the upper and lower power that moves to D1 of Fig. 1.Seek 46 other correspondences of palpus of rail actuation coil and design, to produce the power that moves as Fig. 1 forward and backward D2 in the magnetic field generation device of object lens carrier device 30 belows.And as the explanation of Fig. 3, these actuation coils 44,46 also can be by elastic cantilever 50 with delivered current.
See also Fig. 5, Fig. 5 is the transversary synoptic diagram of object lens carrier device 30 of the present invention.Object lens carrier device 30 also comprises a match connecto (adapter) 60, match connecto 60 is to be fixedly connected on around the hole 64 of printed circuit board (PCB) 34, be through hole 62 in the match connecto 60, generally can be described as into pupil (entrance pupil) for a pre-sizing.Through hole 62 is little than the hole 64 of printed circuit board (PCB) 34, and 64 settings of corresponding hole, in order to the light of restricted passage hole 64.Match connecto 60 and fixedly connected with object lens 32 by through hole 62 edges is so that object lens 32 are fixed on the printed circuit board (PCB) 34.
Therefore, be used in object lens carrier device 30 in the optical read/write head by the present invention, utilize printed circuit board (PCB) 34 as printed circuit board (PCB), the object lens clamping apparatus that replaces known box-shaped, more light, thin except making object lens carrier device 30, significantly reduce outside the cost of element, utilize the printed circuit board surface metallic circuit to make conductive coil 40, more can reduce because of spent man-hour, the wage of winding enameled wire, and directly save expending of enameled wire material and coiling facility cost.
By the above detailed description of preferred embodiments, be to wish to know more to describe characteristic of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (8)
1. object lens carrier device that is used in the optical read/write head, this object lens carrier device and at least one magnetic field generation device are contiguous to be provided with, and is undertaken moving a little by the magnetic field that this magnetic field generation device produced, and it is characterized in that this object lens carrier device comprises:
One object lens;
One printed circuit board (PCB) is provided with a hole in this printed circuit board (PCB), these object lens are to be arranged at this hole so that light passes through, and is provided with conductive coil in this printed circuit board (PCB) and printing, and
A plurality of elastic cantilevers in order to this printed circuit board (PCB) of resiliency supported, and are electrically connected with this conductive coil,
Wherein, an electric current flows in this conductive coil by those elastic cantilevers, and with the magnetic field interaction that this magnetic field generation device is produced, this printed circuit board (PCB) is moved.
2. the object lens carrier device that is used in the optical read/write head as claimed in claim 1 is characterized in that wherein this conductive coil is the metallic circuit for this printed circuit board surface.
3. the object lens carrier device that is used in the optical read/write head as claimed in claim 1 is characterized in that wherein this conductive coil is to be spiral fashion.
4. the object lens carrier device that is used in the optical read/write head as claimed in claim 3, it is characterized in that, wherein an end of this spiral fashion conductive coil extends to the edge from this printed circuit board surface, the other end is to run through this printed circuit board (PCB) to this printed circuit board (PCB) opposite side surface, and extend to the edge on this printed circuit board (PCB) opposite side surface certainly.
5. the object lens carrier device that is used in the optical read/write head as claimed in claim 1, it is characterized in that, wherein this conductive coil comprises and seeks rail actuation coil and and focus on actuation coil, this focusing actuation coil is to be provided with printing around the thin sheet surface of this hole, this is sought the rail actuation coil and also prints and be arranged at this thin sheet surface, this seeks the rail actuation coil to the corresponding magnetic field generation device in should magnetic field generation device, before producing, the back is to the power that moves, this focuses on actuation coil to the corresponding magnetic field generation device in should magnetic field generation device, on producing, down to the power that moves.
6. the object lens carrier device that is used in the optical read/write head as claimed in claim 1, it is characterized in that, wherein these printed circuit board (PCB) both sides are respectively provided to a few protruding part, the protruding part of these both sides in correspondence with each other, this conductive coil is to be a focusing actuation coil, and this object lens carrier device also comprises seeks the rail actuation coil, this seeks the rail actuation coil to should magnetic field generation device, to produce the power that forward and backward moves, this focuses on actuation coil to should magnetic field generation device, and is upper and lower to mobile power to produce.
7. the object lens carrier device that is used in the optical read/write head as claimed in claim 1 is characterized in that wherein this elastic cantilever is to be conductive material.
8. the object lens carrier device that is used in the optical read/write head as claimed in claim 1, it is characterized in that, this object lens carrier device also comprises a match connecto, this match connecto is to be fixedly connected on around the hole of this printed circuit board (PCB), the through hole of a pre-sizing is set on this match connecto, this through hole is little than the hole of this printed circuit board (PCB), and to should the hole setting, light in order to this hole of restricted passage, and by fixedlying connected with these object lens at this through hole edge, so that these object lens are fixed in this printed circuit board (PCB).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101022288A CN100397503C (en) | 2004-12-16 | 2004-12-16 | Object lens carrier structure for optical read-write head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101022288A CN100397503C (en) | 2004-12-16 | 2004-12-16 | Object lens carrier structure for optical read-write head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1790504A CN1790504A (en) | 2006-06-21 |
| CN100397503C true CN100397503C (en) | 2008-06-25 |
Family
ID=36788289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004101022288A Expired - Fee Related CN100397503C (en) | 2004-12-16 | 2004-12-16 | Object lens carrier structure for optical read-write head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100397503C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07153097A (en) * | 1993-12-01 | 1995-06-16 | Tdk Corp | Apparatus for driving objective lens |
| JPH09134533A (en) * | 1995-11-07 | 1997-05-20 | Matsushita Electric Ind Co Ltd | Objective lens-supporting apparatus |
| JP2003338061A (en) * | 2002-05-17 | 2003-11-28 | Sanyo Electric Co Ltd | Objective lens driving mechanism |
-
2004
- 2004-12-16 CN CNB2004101022288A patent/CN100397503C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07153097A (en) * | 1993-12-01 | 1995-06-16 | Tdk Corp | Apparatus for driving objective lens |
| JPH09134533A (en) * | 1995-11-07 | 1997-05-20 | Matsushita Electric Ind Co Ltd | Objective lens-supporting apparatus |
| JP2003338061A (en) * | 2002-05-17 | 2003-11-28 | Sanyo Electric Co Ltd | Objective lens driving mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1790504A (en) | 2006-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7313799B2 (en) | Objective-lens driving apparatus and optical disk apparatus | |
| US8842505B2 (en) | Magnetic disk device and method of controlling magnetic head | |
| CN100397503C (en) | Object lens carrier structure for optical read-write head | |
| CN1331134C (en) | Optical pck-up and optical disk device | |
| CN100397493C (en) | Methods and apparatuses for accessing a hybrid disc | |
| US20060077785A1 (en) | Objective lens carrier structure for optical pickup head | |
| JP5046918B2 (en) | Pickup for accessing a mobile storage medium and drive having the pickup | |
| CN1329897C (en) | Actuator for mobile optical recording/reproducing apparatus | |
| KR100488039B1 (en) | Optical pick-up actuator | |
| TWI260615B (en) | Optical pickup actuator and optical recording and reproducing apparatus and method for the same | |
| US20050229197A1 (en) | Optical pickup actuator and optical recording and/or reproducing apparatus employing the same | |
| US20080005755A1 (en) | Actuator of optical pickup head | |
| JPH11232671A (en) | Object lens driving device | |
| CN100545925C (en) | Light picker | |
| CN100495551C (en) | Optical head device and optical information device, computer, optical disc generator, vehicle navigation system, optical recorder and optical disc server | |
| TWI258753B (en) | Optical recording apparatus and related method | |
| JP2005353208A (en) | Objective lens driver and optical head device | |
| EP2128862A1 (en) | Flat actuator made from one piece of PCB | |
| CN100349220C (en) | Optical reading head actuator | |
| US20040172644A1 (en) | Optical head apparatus and optical disk apparatus using this optical head apparatus | |
| JP2004127492A (en) | Optical pickup actuator and optical disk drive adopting same | |
| US20070159702A1 (en) | Pickup unit and disk drive unit provided with such a pickup unit | |
| JP2005092956A (en) | Optical disk drive | |
| JP2002288857A (en) | Optical pickup actuator | |
| CN101641738A (en) | Pickup for accessing moving storage media and drive having the pickup |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20100118 |