JP2000331389A - Optical pickup, optical disk device and magnetic field modulation head device used for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce component costs, and to realize miniaturization by reducing an occupied space. SOLUTION: This head device 15 includes a magnetic head element 31 for recording an information signal in the magneto-optical recording layer of a magneto-optical disk 11, a slider for holding the magnetic head element 31 at a fixed gap to the surface of the magneto-optical disk 11, a head supporting member 32, with the magnetic head element 31 being attached to one end thereof, and the other end being supported by a fixed part 33 so as to be swung, and a wiring part, with one end thereof being connected to the magnetic head element 31 and the other end being disposed in the fixed part 33. The fixed part 33 is attached on the base 13a of an optical pickup 13. In addition, a distribution means 39 is provided to electrically connect the other end of the wiring part to a connecting part on the base of the optical pickup 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup and an optical disk device for recording or reproducing a signal of a magneto-optical disk, and a magnetic field modulation head device used for the optical pickup and the optical disk device.

[0002]

2. Description of the Related Art Conventionally, for a magneto-optical recording medium such as a magneto-optical disk in which a magneto-optical recording layer composed of a perpendicular magnetization film is provided on a transparent disk substrate having optical transparency, an optical disk device is used. Recording and reproduction of information signals are performed. Such an optical disk device includes, for example, a rotational drive unit such as a spindle motor for rotationally driving a magneto-optical disk, and an objective lens from a light source to a magneto-optical recording layer on one surface side of the rotating magneto-optical disk. An optical pickup that irradiates a light beam through an optical system and detects return light from the magneto-optical recording layer of the optical disk by a photodetector through the optical system, and a magneto-optical device on the other surface side of the magneto-optical disk A magnetic field modulation head device that applies an external magnetic field based on an information signal to be recorded on the recording layer, and a biaxial actuator that supports the objective lens so as to be movable in two axial directions, that is, a focus direction and a tracking direction. I have.

[0003] In the optical disk device configured as described above, a magnetic field modulation head device applies a magnetic field whose direction is modulated in accordance with an information signal to be recorded to a rotating magneto-optical disk. The light beam emitted from the optical pickup is condensed and irradiated. Thereby, by the irradiation of the light beam, the portion of the magneto-optical recording layer that has lost the coercive force by being heated to the Curie temperature or higher is magnetized according to the direction of the magnetic field applied by the magnetic field modulation head device, The rotation of the magneto-optical disk causes the light beam to move relatively from the above portion. Therefore, when the temperature of the portion becomes equal to or lower than the Curie temperature, the direction of the magnetization is fixed, and the magnetic recording of the information signal is performed.

By the way, in the optical disk device having such a configuration, at the time of recording the information signal, the magnetic head element of the magnetic field modulation head device is kept in contact with the rotatable magneto-optical disk at a fixed interval. To face each other. This is to prevent the core of a magnetic material such as ferrite constituting the magnetic head element from directly sliding on the magneto-optical disk, thereby preventing the magneto-optical disk from being damaged.

Therefore, in the conventional magnetic field modulation head device, even if surface contact occurs when the magneto-optical disk is rotationally driven due to warpage or unevenness of the thickness of the magneto-optical disk, the magnetic field modulation head device has a magnetic field modulation head device. An electromagnetic control mechanism for displacing the magnetic head element following the surface contact of the magneto-optical disk is provided so that the head element can maintain a constant interval without contacting the surface of the magneto-optical disk.

In a magnetic field modulation head device having such an electromagnetic control mechanism, electric power for driving the electromagnetic control mechanism is required, which increases power consumption and
Since a detection mechanism for detecting the interval between the magnetic head element and the magneto-optical disk is also required, not only does the mechanism for controlling the magnetic field modulation head device become complicated,
The optical disc device itself has a complicated configuration, and it is difficult to reduce the size and thickness of the entire device.

For this reason, instead of the magnetic field modulation head device which holds the magnetic head elements of the magnetic field modulation head device at fixed intervals by an electromagnetic control mechanism, a magneto-optical disk which can generate surface contact due to rotational driving is replaced with a magneto-optical disk. There has been proposed an optical disk device provided with a magnetic field modulation head device, which records an information signal while a magnetic head element is in sliding contact with a disk.

[0008] Such a magnetic field modulation head device is configured, for example, as shown in FIG. 6, a magnetic field modulation head device 1 includes a magnetic head element 2 including a bobbin to which a magnetic core and a coil (not shown) are attached.
Are supported by the tip of the head support member 3. The other end of the head support member 3 is swingably supported by the fixed portion 1a.

The magnetic head element 2 has a slider (not shown) on the lower surface side facing the magneto-optical disk 4. Thus, the magnetic head element 2 is held at a constant interval on the surface of the magneto-optical disk 4 by sliding the slider on the surface of the magneto-optical disk 4 which is rotationally driven.

An optical pickup 6 is provided below the magneto-optical disk 4 on the side opposite to the magnetic head element 2. The optical pickup 6 emits a light beam from a light source (not shown) to a position on the opposite side of the magneto-optical disk 4 from the magnetic head element 2.
It is slidably supported along the main shaft 6a and the sub shaft 6b. As a result, the optical pickup 6 is sought in the radial direction of the magneto-optical disk 4 by a seek mechanism (not shown) to access a desired track position on the magneto-optical disk 4. Further, on the base 6c of the optical pickup 6, the fixed portion 1a of the magnetic field modulation head device 1 is mounted.
In the above-described seek operation, the magnetic field modulation head device 1 also performs a seek operation.

[0011]

By the way, in the magnetic field modulation head device 1, the connector 7b provided on the main substrate 7a of the optical disk device 7 is connected to the fixed portion 1a via a dedicated flexible printed board 8. Are connected to each other, and a lead wire (not shown) is routed along the head support member 3 so that wiring to the magnetic head element 2 is performed.

On the other hand, wiring to the optical pickup 6 is similarly performed on the main substrate 7a of the optical disk device 7.
The connector 7c provided above is connected to the base 6c via a dedicated flexible printed circuit board 9. For this reason, although the seek durability is high,
Two relatively expensive flexible printed circuit boards 8,
9, the cost of the magnetic field modulation head device 1 is increased. Furthermore, it is necessary to secure the space occupied by the flexible printed circuit board 8 of the magnetic field modulation head device 1 during the seek operation, and there is a problem that the size is further increased.

In view of the above, the present invention provides an optical pickup, an optical disk device, and a magnetic field modulation head device used for the same, which can reduce the cost of parts, reduce the occupied space, and reduce the size. It is intended to be.

[0014]

According to the first aspect of the present invention, there is provided a magnetic head element for recording an information signal on a magneto-optical recording layer of a magneto-optical disk, and the magnetic head element includes one end. A head support member that is mounted on the other end and is swingably supported with respect to the fixed portion, and a wiring portion that is connected to the magnetic head element at one end and the other end is disposed at the fixed portion. This is achieved by a magnetic field modulation head device, wherein the fixed portion is provided with power distribution means for electrically connecting the other end of the wiring portion and the connection portion of the base of the optical pickup.

According to the first aspect of the present invention, since the power distribution means for connecting the wiring portion to the magnetic head element of the magnetic field modulation head device and the connection portion of the base of the optical pickup is provided, the magnetic field modulation head is provided. The power distribution to the apparatus is performed from the main board of the optical disc apparatus via a flexible printed board that electrically connects the main board to the base of the optical pickup, and further via the power distribution means. Therefore, since the power distribution means is connected to the base of the optical pickup that performs a seek operation integrally with the magnetic field modulation head device, the power distribution means may not have seek durability. As a result, an expensive flexible printed circuit board having high seek durability is sufficient to connect between the base of the optical pickup and the main board of the optical disk. Further, since a flexible printed board for power distribution from the main board of the optical disc device to the magnetic field modulation head device is not required, an occupied space in the seek operation of the flexible printed board is not required, and the space can be saved.

According to the second aspect of the present invention, when the power distribution means has a connector at an end, the connector is connected to a connector provided at a connection portion of a base of the optical pickup. Since the end of the power distribution means is connected to the connection portion of the base of the optical pickup by the connector, the connection work is facilitated and the removal is also easily performed.

According to a fourth aspect of the present invention, the power distribution means is a contact portion provided on a surface of the fixed portion facing the base of the optical pickup, and the contact portion is formed of a fixed portion and a base of the optical pickup. When attached to the base of the optical pickup, when it comes into contact with the connection part of the base of the optical pickup, the fixed part of the magnetic field modulation head device is attached to a predetermined position on the base of the optical pickup, so that this fixed part When the contact portion provided on the opposing surface comes into contact with the connection portion of the base of the optical pickup, the work of connecting the power distribution means to the magnetic field modulation head device is automatically performed. Accordingly, the connection operation is easily performed, and the connection is released by removing the magnetic field modulation head device from the base of the optical pickup, thereby facilitating the handling.

According to the configuration of claim 5, the contact portion is
In the case where the contact portion is formed integrally with the head supporting means, the number of parts can be reduced if the contact supporting portion is formed as an extension of the head supporting means.

According to the configuration of claim 6, the contact portion is
When pressed against the connection of the base of the optical pickup based on the spring property of the material constituting the head support, the contact of the power distribution unit of the magnetic field modulation head device is connected to the connection on the base of the optical pickup. On the other hand, since it is pressed without providing a separate spring or the like, with a simple configuration,
The electrical connection is ensured at low cost.

According to the configuration of claim 7, the contact portion is
When plated with a conductive material such as nickel, gold, or silver, the contact resistance of the optical pickup with respect to the connection portion on the base is reduced, and the electrical connection is more reliably performed. Further, according to the eleventh aspect, a light source, a light focusing means for condensing a light beam from the light source from one side of the magneto-optical disk to the magnetic recording layer, and a return from the magnetic recording layer of the magneto-optical disk An optical pickup comprising: a light detector for detecting light via a light focusing means; and a base for housing an optical system including the light focusing means and the light detector, the base being electrically connected to a head side. A connection portion for connecting a power distribution means for performing the above-described operation is provided. If such an optical pickup is used, the above-described magnetic field modulation head device can be easily retrofitted.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. still,
Since the embodiments described below are preferred specific examples of the present invention, various technically preferred limitations are added.
The scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

FIG. 1 shows the configuration of an optical disk device incorporating the first embodiment of the magnetic field modulation head device according to the present invention. In FIG. 1, an optical disk device 10 includes a spindle motor 12 as a driving unit that rotationally drives an optical disk 11 as a magneto-optical disk, an optical pickup 13, a feed motor 14 as the driving unit,
A magnetic field modulation head device 15 having a magnetic field modulation head for recording information on the optical disk 11 is provided.

Here, the spindle motor 12 is driven and controlled by a system controller 16 and a servo control circuit 18, and is rotated at a predetermined rotation speed. Optical disk 11
Although a magneto-optical disk of a magnetic field modulation type is used, a read-only optical disk such as a compact disk (CD) used without driving the magnetic field modulation head device 15 can also be reproduced.

The optical pickup 13 irradiates the magnetic recording layer of the rotating optical disk 11 with light by a light converging means 21 (see FIG. 2) or outputs the light from a signal demodulator and an error correction circuit 17. The signal is recorded by the magnetic field modulation head device 15 based on the signal. Further, the optical pickup 13 detects the return light from the magnetic recording layer and outputs a reproduction signal based on the return light to the signal demodulator and the error correction circuit 17, or outputs the magnetic signal detected by the magnetic head 15. A reproduction signal based on the return light is output to the signal demodulator and the error correction circuit 17.

Thus, the recording signal demodulated by the signal demodulator and the signal demodulation unit of the error correction circuit 17 is error-corrected through the error correction unit, and is used when the optical disk device 10 is used for data storage of a computer. Is transmitted to an external computer or the like via the interface 19. As a result, the external computer and the like
1 can be received as a reproduced signal. When the optical disk device 10 is for audio, the error-corrected recording signal is supplied to a D / A (digital-analog) and A / D (analog-digital) converter 20 as shown by a dotted line. The digital-to-analog conversion is performed by the D / A conversion unit, and the signal is output as an audio signal.

A feed motor 14 for moving the optical pickup 13 to a predetermined recording track on the optical disk 11, for example, is connected to the optical pickup 13. The spindle motor 12 and the feed motor 14 are controlled by the servo control circuit 18, respectively.

FIG. 2 shows the structure of the main part of the optical pickup 13 of the optical disk device 10. In FIG. 2, an optical pickup 13 includes a light source 22 for irradiating the light focusing unit 21 with a light beam, and an optical disk 11 for irradiating the optical disk 11 via the light focusing unit 21.
An optical system 23 for separating return light from the
25 and 26 and a differential amplifier 27.

The light source 22 is, for example, a semiconductor laser device and emits a light beam having a predetermined wavelength.

The light focusing means 21 uses an objective lens, for example, and is supported by a biaxial actuator so as to be movable in two directions, a tracking direction along the radial direction of the optical disk 11 and a focusing direction orthogonal thereto. I have. The light converging means 21 is used when the data is reproduced.
2 functions to irradiate the recording layer (not shown) formed on the substrate of the optical disc 1 with the light beam from the optical disk 1 and to make the return light reflected by this recording layer incident on the optical system 23. Here, at the time of data recording, the magnetic field modulation head device 15
A magnetic field having an intensity corresponding to the recording signal supplied via the head drive circuit 15a is applied to the irradiation position of the laser beam.

The optical system 23 causes the light beam from the light source 22 to be incident on the light focusing means 21 and the light focusing means 2.
1 is separated and converted into a convergent light, a part of which is given astigmatism and is incident on the photodetector 24. Further, a part of the light is reflected and transmitted to the photodetector 25 and transmitted again. Light is incident on the photodetector 26.

The photodetector 24 has a function of converting a laser beam incident on each of the photodetectors into electric signals and outputting the electric signals to the servo control circuit 18 as servo signals. I do. In addition, the photodetector 2
5 and 26 function to output an electric signal corresponding to the amount of incident return light to the differential amplifier 27, respectively. The differential amplifier 27 calculates the difference between the outputs of the photodetectors 25 and 26, and outputs the calculation result to the signal modulation / demodulator and error correction circuit 17 as a magneto-optical signal (hereinafter, referred to as “MO reproduction signal”). Works like that.

FIG. 3 shows a first embodiment of the magnetic field modulation head device 15. In FIG. 3, the magnetic field modulation head device 15 has a magnetic head element 31 composed of a bobbin to which a magnetic core and a coil (not shown) are attached. The other end of the head support member 32 is swingably supported by the fixed portion 33.

The magnetic head element 31 is used for the magneto-optical disk 1
A head slider (not shown) is provided on the lower surface side opposite to 1. Thus, the magnetic head element 31 is held at a constant interval on the surface of the magneto-optical disk 11 by sliding the head slider on the surface of the magneto-optical disk 11 that is rotationally driven. .

An optical pickup 13 is provided below the magneto-optical disk 11 on the side opposite to the magnetic head element 31. The optical pickup 13 has a main shaft 3
4 and slidably supported along the countershaft 35. As a result, the optical pickup 13 is sought in the radial direction of the magneto-optical disk 11 by a seek mechanism (not shown) to access a desired track position on the magneto-optical disk 11. Further, the fixed portion 33 of the magnetic field modulation head device 15 is mounted on the base 13a of the optical pickup 13. When the optical pickup 13 performs the above-described seek operation, the magnetic field modulation head device 15 also performs the seek operation. It is supposed to do it.

Further, in the magnetic field modulation head device 15, the substrate of the optical disk device 10, for example, the main substrate 10
a from a connector 36 provided on the optical pickup 13 via a flexible printed circuit board 37 to a base 13a of the optical pickup 13; Via the distribution member 39 serving as
3, and a lead wire (not shown) is routed along the head support member 32, so that wiring to the magnetic head element 31 is performed.

Here, the flexible printed circuit board 3
Reference numeral 7 is different from the flexible printed circuit board 9 in the conventional magnetic field modulation head device 1 shown in FIG. 6 and includes a wiring to the magnetic head element 31. Also,
The power distribution member 40 connects between the magnetic field modulation head device 15 and the optical pickup 13. Since the magnetic field modulation head device 15 moves integrally with the optical pickup 13 during a seek operation, the seek operation is performed. , There is no need to have seek durability, and therefore it need not be a flexible printed circuit board.

The optical disk device 10 according to the present embodiment
It is configured as described above. At the time of reproduction, in FIG.
The light beam from the light source 22 of the optical pickup 13 is focused on the recording layer of the optical disc 11 via the light focusing means 21. Then, the return light from the optical disk 11 again enters the photodetectors 24, 25, and 26 of the optical pickup 13 via the light focusing means 21 and the optical system 23. As a result, the photodetectors 25 and 26 convert the signals into electric signals, and the differential amplifier 27 generates an MO reproduction signal, thereby reproducing the data. At the time of recording, a magnetic field having an intensity corresponding to the recording signal supplied via the head drive circuit 15a is applied to the light beam irradiation position of the optical disk 11 by the magnetic head element 31 of the magnetic field modulation head device 15, and the information signal Is performed.

In this case, in the magnetic field modulation head device 15, since the wiring to the magnetic head element 31 is performed from the base 13a of the optical pickup 13 via the power distribution member 39, the power distribution member 39 is not affected by the seek operation. Absent. Therefore, the power distribution member 39 does not need to be a flexible printed circuit board because it does not need to have seek durability. As a result, compared to the conventional magnetic field modulation head device 1, only one relatively expensive flexible printed circuit board is required, and the cost of parts is reduced. In addition, since the power distribution member 39 is not affected by the seek operation, the space occupied by the power distribution member 39 is small and space saving is realized, and the optical pickup 13 and the entire optical disk device 10 are easily reduced in size and thickness. Will be.

FIG. 4 shows the configuration of a magnetic field modulation head device according to a second embodiment of the present invention. In FIG.
The parts denoted by the same reference numerals as those in the first embodiment have the same configuration, and thus the duplicated description will be omitted, and the description will focus on the differences. In the figure, the magnetic field modulation head device 40 has substantially the same configuration as the magnetic field modulation head device 15 shown in FIG. 3, but differs in the following points. That is, in the magnetic field modulation head device 40, the magnetic head element 31
Instead of the power distribution member 39 and the connector 38 for wiring to the optical pickup 13, a plurality of (two in the illustrated case) contact portions 4 are provided as connection portions provided on the base 13 a of the optical pickup 13.
1 and these contact portions 41, respectively,
And a plurality of contact portions 42 provided on the lower surface of the fixed portion 33 of the magnetic field modulation head device 40.

The base 13a of the optical pickup 13
In the illustrated case, the contact portion 41 disposed on the upper side
This is configured as a land formed by a conductive pattern formed on a. Such a land is, for example, a base 13a
It is formed at the same time as the conductive pattern for leading the wiring. The contact portion 41 is made of a separate conductive material from the base 13a.
It may be configured by mounting on top.

As shown in FIG. 5, the contact portion 42 provided on the lower surface of the fixing portion 33 is, for example, a head supporting member 32.
The extended portion 32a is exposed on the lower surface of the fixed portion 33, and is formed as a bent portion bent along the lower surface. In addition, the contact portion 42 is further configured as a curved contact portion 42 having a distal end portion that is convex downward in a cross section. In this case, since the contact portion 42 is made of the elastic material forming the head support member 32, the contact portion 4 is formed.
2 may be a spring contact. Then, as shown in FIG. 5, when the fixing portion 33 is placed on the base 13 a of the optical pickup 13, the contact portion 42 is pressed against the contact portion 41 based on elasticity, and electrical contact is made. This is done reliably.

The contact portions 41 and 42 are preferably plated on the surface with a conductive material such as nickel, gold or silver. Thereby, the contact resistance when the contact portions 41 and 42 come into contact with each other is further reduced, and the electrical connection is performed more reliably.

The magnetic field modulation head device 40 having the above configuration
According to this, when the fixed portion 33 of the magnetic field modulation head device 40 is placed at a predetermined position on the base 13 a of the optical pickup 13, each of the contact portions 42 exposed on the lower surface of the fixed portion 33 becomes an optical Wiring to the magnetic head element 31 is automatically performed by contacting a corresponding contact portion 41 provided on the base 13a of the pickup 13.

Here, since each contact portion 42 is configured to have elasticity by the extension 32a of the head support member 32, as shown in FIG. 5B, each contact portion 42 has its elasticity. , The corresponding contact portions 4
1 is reliably brought into electrical contact, and the reliability of the connection is improved. Therefore, in the magnetic field modulation head device 40, the wiring work is not required, and the power distribution member 39 and the connector 38 in the magnetic field modulation head device 15 shown in FIG. Cost and assembly costs will be reduced. In this case, the optical pickup 13
In other words, if the base 13a and the contact portion 41 as a connection portion are provided, the configuration of the fixing portion 33 side can be freely provided on the user side in various forms to form the magnetic field modulation head device. Good.

In the above-described embodiment, the flexible printed circuit board 37 and the power distribution member 39 are connected to the main board 10a of the optical disk apparatus 10 and the base 13a of the optical pickup 13 by connectors 36 and 38, respectively. However, the present invention is not limited to this, and they may be connected directly by soldering or the like.

In the above-described embodiment, the contact portion 42 is formed as an extension of the head support member 32 for supporting the magnetic head element 31. However, the present invention is not limited to this. May be attached to the lower surface of the fixing portion 33. Further, in the above-described embodiment, the optical disk device for recording / reproducing a magneto-optical disk has been described. However, the present invention is not limited to this, and other types of optical disks, for example, compact Obviously, the present invention can be applied to an optical disk device compatible with a read-only optical disk such as a disk (CD).

[0047]

As described above, according to the present invention, the number of flexible printed circuit boards is reduced and the wiring to the magnetic field modulation head device is simplified, so that the cost is reduced and the magnetic field modulation is further reduced. It is possible to provide an optical pickup, an optical disk device, and a magnetic field modulation head device used in the optical pickup, which can be reduced in size by eliminating a space occupied by the wiring means of the head device at the time of seeking.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing a configuration of an optical disk device incorporating a first embodiment of a magnetic field modulation head device according to the present invention.

FIG. 2 is a schematic diagram showing a configuration of an optical pickup in the optical disk device of FIG.

FIG. 3 is a schematic perspective view showing a configuration of a first embodiment of a magnetic field modulation head device in the optical disc device of FIG. 1;

FIG. 4 is a schematic perspective view showing a configuration of a second embodiment of the magnetic field modulation head device in the optical disc device of FIG. 1;

5A and 5B are partially enlarged cross-sectional views showing a base portion of an optical pickup and a contact portion provided on a fixing portion of the magnetic field modulation head device of FIG. 4 before (A) mounting and after (B) mounting.

FIG. 6 is a schematic perspective view showing a configuration of an example of a conventional magnetic field modulation head device.

[Explanation of symbols]

10 optical disk device, 11 optical disk, 1
2 ... Spindle motor, 13 ... Optical pickup, 14 ... Feed motor, 15 ... Magnetic field modulation head device, 15a ... Head drive circuit, 16 ... System controller, 17 ... Signal Modulator / demodulator and error correction circuit, 18 servo control circuit, 19 interface, 20 D / A, A / D converter, 21 ...
Light focusing means, 22 ... light source, 23 ... optical system, 2
4, 25, 26 photodetector, 27 differential amplifier, 31 magnetic head element, 32 head support member, 32a extended portion, 33 fixed portion, 34 ・
..Main shaft, 35 ... Sub shaft, 36, 38 ... Connector, 37 ... Flexible printed circuit board, 39 ...
Power distribution member, 40 ... magnetic field modulation head device, 41, 42
... Contact part.

Claims (11)

[Claims] 1. A magnetic head element for recording an information signal on a magneto-optical recording layer of a magneto-optical disk, and the magnetic head element is attached to one end and the other end is swingably supported with respect to a fixed portion. A head support member, and a wiring portion having one end connected to the magnetic head element and the other end disposed on the fixed portion, wherein the fixed portion has the other end of the wiring portion and an optical pickup. A magnetic field modulation head device comprising a power distribution means for electrically connecting a connection portion of a base. 2. An optical pickup according to claim 1, wherein said power distribution means includes a connector at an end thereof, and said connector is connected to a connector provided at a connection portion of a base of said optical pickup. 3. A magnetic field modulation head device according to claim 1. 3. The optical power distribution means is a contact portion provided on the fixed portion, and the contact portion comes into contact with a contact portion of a base of the optical pickup when the fixed portion is attached to a base of the optical pickup. 2. The method of claim 1, wherein
3. A magnetic field modulation head device according to claim 1. 4. An optical pickup according to claim 1, wherein said power distribution means is a contact portion provided on a surface of the fixed portion facing the base of the optical pickup. The magnetic field modulation head device according to claim 1, wherein the magnetic field modulation head device contacts a connection portion of a base of the pickup. 5. The magnetic field modulation head device according to claim 4, wherein said contact portion is constituted by an extension of a head support means. 6. The magnetic field modulation head according to claim 5, wherein the contact portion is pressed against a connection portion of a base of the optical pickup based on a spring property of a material constituting the head support means. apparatus. 7. The magnetic field modulation head device according to claim 6, wherein the contact portion is plated with a conductive material such as nickel, gold or silver. 8. A light source, a light converging means for converging a light beam from the light source from one side of the magneto-optical disk to a magnetic recording layer, and a light converging means for returning light from the magnetic recording layer of the magneto-optical disk. A magnetic field modulation head device disposed on the other side of the magneto-optical disk, wherein the magnetic field modulation head device transmits an information signal to a magneto-optical recording layer of the magneto-optical disk. A magnetic head element for performing recording on the head, a head support member having the magnetic head element attached to one end and the other end swingably supported with respect to the fixed portion, and one end connected to the magnetic head element and the other end Includes a wiring portion provided on the fixed portion, and the fixed portion is provided with a power distribution means for electrically connecting the other end of the wiring portion and a connection portion of the base of the optical pickup. Characterized in that the optical Kkuappu. 9. A flexible printed circuit board for connecting the base to a substrate of an optical disk device, the flexible printed substrate performing power distribution from the substrate of the optical disk device to the optical pickup and power distribution to the magnetic field modulation head device. The optical pickup according to claim 8, wherein the optical pickup is configured. 10. A rotation driving means for rotating and driving a magneto-optical disk, and irradiating a light beam from one side of the rotating magneto-optical disk to a magnetic recording layer thereof from a light source via a light focusing means,
An optical pickup for detecting return light from the magnetic recording layer of the magneto-optical disk by a photodetector via a light focusing means and recording an information signal from the other side of the magneto-optical disk by a magnetic field modulation head device; A means for supporting the light focusing means so as to be movable in two axial directions, that is, a focusing direction and a tracking direction; a signal processing circuit for generating a reproduction signal based on a detection signal from the photodetector; and a detection signal from the photodetector. And a servo circuit for moving the light focusing means of the optical pickup in two axial directions based on the magnetic field modulation head device, wherein the magnetic field modulation head device records information signals on the magneto-optical recording layer of the magneto-optical disk. A head element, a head support member to which the magnetic head element is attached at one end and the other end swingably supported with respect to the fixed portion; A wiring portion connected to the head element and having the other end disposed on the fixed portion; and electrically connecting the other end of the wiring portion and the connection portion of the base of the optical pickup to the fixed portion. An optical disc device, comprising: 11. A light source, a light converging means for converging a light beam from the light source from one side of the magneto-optical disk to a magnetic recording layer, and a light converging means for returning light from the magnetic recording layer of the magneto-optical disk. An optical pickup including a photodetector that detects through the optical pickup, wherein a base that houses the optical system including the light focusing unit and the photodetector includes a power distribution unit for electrically connecting to a head side. An optical pickup having a connection portion for connection.