JP2003203381A - Optical pickup, optical disc device, method of manufacturing optical pickup, and optical pickup manufactured by this method - Google Patents

Abstract

(57) Abstract: An object of the present invention is to provide an optical pickup, an optical disk device, a method for manufacturing an optical pickup, and a method for manufacturing the optical pickup, which prevent movement of the position of an actuator during bonding and fixation and reduce the bonding yield. Provide an optical pickup. SOLUTION: In the die cast base 50, fixing screw holes 57, 58 are provided at positions on both sides of the actuator 40 inserted into an opening 53, and the position of the actuator 40 inserted into the opening 53 is adjusted. Later and before bonding, the fixing screws 67, 68 are formed to be inserted. And fixing screw holes 57, 58
Then, the fixing screws 67 and 68 are screwed in, the yoke 50 of the actuator 40 is sandwiched from both sides, and the adjusted actuator 40 is fixed so as not to move from the adjustment position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical pickup for irradiating a signal recording surface of an optical disk with a light beam and reproducing the data recorded on the signal recording surface based on the reflected light, an optical disk apparatus, The present invention relates to a method of manufacturing an optical pickup and an optical pickup manufactured by this method.

[0002]

2. Description of the Related Art An optical optical pickup converges and irradiates a light beam onto a track formed on an information recording surface of an optical disk, and records, reproduces, or erases information on a medium by changing the reflected light. It is something to do. When driving such an optical pickup, it is necessary to make the light beam follow the target recording track regardless of the surface warp of the rotating medium or the surface wobbling caused by the rotation, or the eccentricity of the recording track. The angle and position of the objective lens are finely controlled.

However, due to variations in the assembly accuracy of the optical pickup and the parts accuracy of the optical elements such as semiconductor lasers, when the optical pickup is assembled, there is a displacement between the light emitted from the optical system and the neutral position of the objective lens. There are cases. In such a case, the displacement of the objective lens causes a variation in the amount of light emitted from the objective lens and an imbalance in the radial distribution, which causes a deterioration in the quality of a reproduced signal of information and a problem such as recording / erasing.

Further, in the optical pickup, the light beam emitted from the fixed optical system is reflected by the mirror and made incident on the objective lens. Therefore, when the optical pickup is assembled, the objective lens and the incident laser light are slightly separated. Even if there is such a positional deviation, if the actuator is controlled to move the objective lens, the error in the relative positional relationship between the light emitted from the optical system and the objective lens may become excessive.

In order to solve such a problem, for example,
In Japanese Patent Laid-Open No. 9-180219, a wire support block is screwed to a support plate of an actuator base via a spring plate to adjust the tightening force of the screw so that the lens is attached to the actuator base. The position of the holder can be adjusted in the direction perpendicular to the tracking direction, and when the actuator base is attached to the main base, the two screws screwed into the actuator base from below the main base There is disclosed an optical head actuator capable of three-dimensionally finely adjusting the position of the objective lens in the radial direction and the tangential direction by changing the protrusion length.

[0006]

However, in the conventional technique as described above, the position of the optical head actuator is accurately adjusted, and then the position is adjusted by shrinkage of the adhesive or the like when the fixing is performed by adhesion as the main fixing. There was a possibility that the position of was moved.

The present invention has been made in view of the above points, and prevents movement of the position of the actuator at the time of bonding and fixing,
An object of the present invention is to provide an optical pickup, an optical disk device, a method for manufacturing an optical pickup, and an optical pickup manufactured by this method, which reduce a bonding yield.

[0008]

In order to achieve the above object, an optical pickup according to the present invention is provided with an actuator for movably holding the objective lens with respect to an optical system base for making laser light incident on the objective lens. In an optical pickup in which the position of the actuator is adjusted and the adjusted actuator is bonded to the optical system base, the actuator is moved from the adjusted position after the position adjustment of the actuator and before the bonding. It is characterized by having a fixing member for fixing the actuator so as not to do so. In order to achieve the above object, the optical disk device of the present invention is provided with an actuator that movably holds the objective lens with respect to an optical system base that makes laser light incident on the objective lens, and adjusts the position of the actuator. A fixed member for fixing the actuator so that the actuator does not move from the adjusted position after the position adjustment of the actuator and before the position adjustment of the actuator. An optical pickup having: a turntable for mounting an optical disc having a signal recording surface; and a guide member for guiding the optical pickup in a radial direction of the optical disc mounted on the turntable. Characterize. In order to achieve the above object, a method of manufacturing an optical pickup according to the present invention is a method of manufacturing an optical pickup including an actuator that movably holds an objective lens, and an optical system base that makes a laser beam incident on the objective lens. In, the step of adjusting the position of the actuator when the actuator is attached to the optical system base, the step of fixing the actuator so as not to move from the adjusted position after the position adjustment of the actuator, and the step of fixing the actuator Bonding the actuator to the optical system base. In order to achieve the above object, an optical pickup of the present invention is an optical pickup including an actuator that movably holds an objective lens and an optical system base that makes laser light incident on the objective lens. The position of the actuator is adjusted at the time of mounting the actuator, and after the position of the actuator is adjusted, the actuator is fixed by using a fixing member so that the actuator does not move from the adjusted position, and the fixed actuator is fixed to the optical system base. It is manufactured by a method of adhering to.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a perspective view showing the overall configuration of the optical disc reproducing apparatus 1 according to the embodiment of the present invention. This optical disk reproducing device 1
Is used by being incorporated in a small personal computer such as a notebook type computer as shown in FIG.

The optical disk reproducing apparatus 1 shown in FIG. 2 is a tray 10 which is a movable body on which a disk drive unit for driving and reproducing a disk (not shown) is mounted, and a cabinet which is a housing for housing the tray 10. 11
It consists of and. The cabinet 11 is composed of an upper cabinet and a lower cabinet, but the upper cabinet is not shown in the figure.

The tray 10 can be inserted into and removed from the cabinet 11 in the direction of arrow A. That is, guide rails 12 having a U-shaped cross section for guiding and supporting the tray 10 are fixed to both inner walls of the cabinet 11, and the guide protrusions provided on both sides of the tray 10 are fixed to these guide rails 12. 13 are supported by the slide rails 14 so as to be fitted therein.

The tray 10 has a disk mounting portion 15 formed in a recessed shape corresponding to the outer shape of the optical disk 2.
And a disk motor (not shown) and turntable 1
In addition to a disk drive mechanism such as 6, an optical pickup 17 for reading data from the optical disk 2 by irradiating a recording area of a rotating optical disk 2 described later with laser light and capturing the reflected light, and an optical pickup 17 A pickup feeding mechanism for feeding the optical disc 2 in the radial direction is provided.

The disk drive mechanism and the pickup feed mechanism are mounted on a single mechanical chassis 18.
The mechanical chassis 18 is supported by the tray 10 in a floating structure via a vibration damping member such as damper rubber.

Further, the tray 10 has a tip portion in the ejecting direction at the time of reproduction of the optical disk 2 or the like.
An eject lock mechanism 20 is provided which holds the storage state of the cabinet 11 in the cabinet 11 and ejects the tray 10 from the cabinet 11 by pushing the eject button 19 when the optical disc 2 is replaced.

FIG. 4 is a circuit block diagram of the optical disk reproducing apparatus 1. The circuit of the optical disc reproducing apparatus 1 of FIG.
Spin motor 2 in which the turntable 16 is fitted to the rotary shaft
1, an optical pickup 17, an RF amplifier 22,
The data slice circuit 23 and the NRZI (Non Ret)
urn to Zero Inverted) demodulation circuit 24, ECC (Error Correction Code) processing circuit 25, demodulation circuit 26, address extraction circuit 27,
Track jump circuit 28 and pickup motor 29
A tracking servo circuit 30, a focusing servo circuit 31, and a spindle motor servo circuit 32.

The turntable 16 on which the optical disk 2 is mounted is fitted to the rotary shaft of the spindle motor 21 as described above, and rotates the mounted optical disk 2 in accordance with the rotation of the spindle motor 21. The spindle motor 21 is connected to a spindle motor servo circuit 32 via a signal line 33.

The spindle motor servo circuit 32 outputs a motor drive signal to the spindle motor 21 via a signal line 33 so that the spindle motor 21 rotates at a rotation speed according to a command output from the microprocessor.

Further, the spindle motor servo circuit 32
To monitor the rotation speed of the spindle motor 21,
A rotation speed signal corresponding to the rotation speed of the spindle motor 21 is input from the spindle motor 21 via the signal line 34.

Then, the spindle motor servo circuit 32
In accordance with a command from the microprocessor, the fine adjustment of the drive signal is performed according to the rotation speed signal so that the spindle motor 21 is rotated at the set rotation speed, and the rotation of the spindle motor 21 is feedback-controlled.

The optical pickup 17 reads the recorded data from the rotating optical disc 2 and outputs an RF signal (high frequency signal) corresponding to the read data to the RF amplifier 22 connected in the subsequent stage. The RF amplifier 22 is
The RF signal is amplified by a predetermined gain and then output to the data slice circuit 23 connected in the subsequent stage.

The data slicing circuit 23 slices the amplified RF signal to convert it into a square wave signal corresponding to the data, and then outputs it to the NRZI demodulation circuit 24 connected to the subsequent stage. The NRZI demodulation circuit 24 demodulates the generated square wave signal as digital data based on the NRZI demodulation rule, and then outputs the demodulated square wave signal to the ECC processing circuit 25 connected to the subsequent stage.

The ECC processing circuit 25 performs error correction processing on the digital data and then outputs it to the demodulation circuit 26 connected in the subsequent stage. The demodulation circuit 26 removes a margin bit added when recording data on the optical disc 2 from the data in order to suppress the DC signal component, and then a data reproduction system (not shown) connected in the subsequent stage, And outputs the data to the address extraction circuit 27.

The address extraction circuit 27 extracts the address of the read data from the data read by the optical pickup 17, and outputs this address to the track jump circuit 28 connected to the subsequent stage.

Upon receiving a command from a microprocessor (not shown), the track jump circuit 28 picks up a pickup motor 29 in order to access the optical pickup 17 on the optical disk 2 in accordance with the address of the recording position on the disk of the data to be accessed. A track jump signal as a drive signal is output to the. Then, the address obtained from the microprocessor and the address obtained from the address extraction circuit 27 are compared, and when they match, it is determined that the track jump is completed, and the process waits until the next data access command is output.

The pickup motor 29 rotates based on the track jump signal from the track jump circuit 28, and in order to access the data instructed by the command of the microprocessor, the optical pickup 17 is brought close to the data to be accessed. Moving.

The tracking servo circuit 30 moves the optical pickup 17 and then the optical pickup 17
The tracking servo processing is performed so that the light beam output from the device traces the data track on the optical disc 2.

The focusing servo circuit 31 performs focusing servo processing so that the light beam output from the optical pickup 17 is properly focused on the signal recording surface on which the data track is recorded.

The tracking servo circuit 30 and the focusing servo circuit 31 are both connected to the RF amplifier 22 in the preceding stage, and generate a tracking servo signal and a focusing servo signal based on the RF signal output from the RF amplifier 22, respectively. Then, the tracking servo signal and the focusing servo signal are output to an actuator 40, which will be described later, built in the optical pickup 17 via the signal lines 35 and 36.

In this way, the tracking servo circuit 3
0, the focusing servo circuit 31 performs feedback type tracking servo processing and focusing servo processing for the actuator 40 based on the RF signal reproduced by the optical pickup 17.

Then, after the tracking servo processing and the focusing servo processing are performed by the tracking servo circuit 30 functioning as an actuator control circuit and the focusing servo circuit 31, respectively,
The optical pickup 17 can read data.

Next, referring to FIG. 5, the optical disk reproducing apparatus 1
The structures of the disk drive mechanism and the pickup feed mechanism in FIG. FIG. 5 shows the disc mounting portion 15 and the mounted optical disc 2 in the optical disc reproducing apparatus 1.
FIG.

In the optical disc reproducing apparatus 1 of FIG. 5, a guide bearing 42 is provided in the optical pickup 17, and the guide bearing 42 is inserted through a guide shaft 43 provided in the main body. Then, the optical pickup 17 is held so as to be able to travel in the radial direction B of the optical disc 2 according to the guide of the guide shaft 43 in order to access the data area on the optical disc 2.

The optical pickup 17 is provided with an actuator 40 which will be described later and movably holds an objective lens 44. The objective lens 44 is provided on the signal recording surface of the optical disc 2 so that the optical pickup 17 irradiates the data track on the signal recording surface of the optical disc 2 with a light beam having a predetermined frequency with an appropriate focus. It is provided so as to face each other.

Then, the optical pickup 17 irradiates the signal recording surface of the optical disc 2 rotated by the turntable 16 through the objective lens 44 with a light beam, and reflects light reflected by the signal recording surface to the objective lens. Four
Take in via 4

The reflected light taken in is received by the light receiving element provided in the optical pickup 17,
It is converted into an RF signal and output to the subsequent stage via a signal line provided on the flexible printed board 45. The flexible printed circuit board 45 can be mechanically connected to the connector 46 and electrically connects the signal line to a signal processing circuit (not shown) in the subsequent stage.

This signal processing circuit includes a data slice circuit 23, an NRZI demodulation circuit 24, an ECC processing circuit 25,
It is composed of a demodulation circuit 26 and the like.

A first embodiment of the structure of the optical pickup 17 of the present invention will be described with reference to FIGS. 1, 6 and 7. FIG. 6 is a perspective view of the die cast base 50. 1 is a bottom view of the optical pickup 17 in which the actuator 40 is mounted on the die cast base 50, and FIG. 7 is a perspective view of the optical pickup 17 in which the actuator 40 is mounted on the die cast base.

The die-cast base 50 of FIG. 6 is an optical system base made of a zinc alloy casting for holding the drive components and the optical system components built in the optical pickup 17, and is a guide bearing 42 (first Another guide bearing 52 (second guide bearing) is provided on the opposite side of the (guide bearing). These guide bearings 42, 52 are shown in FIG.
The optical pickup 1 is inserted into the guide shaft 43 shown in FIG.
7 is held so that it can run in the radial direction B of the optical disc.

The die cast base 50 has an opening 53,
54 is provided. The objective lens 4 is provided in the opening 53.
A yoke 60 that functions as a magnetic component for driving
An optical unit 61 for DVD (Digital Versatile Disc) in which the actuator 40 having the above, a laser having a wavelength of 650 nm, and a photodetector are unitized is mounted. An optical unit 62 for a CD (compact disc) in which a laser having a wavelength of 780 nm and a photodetector are unitized is mounted in the opening portion 54, and the optical pickup 17 shown in FIGS. 1 and 7 is formed.

Further, as shown in FIG. 6, the die cast base 50 is provided adjacent to the opening 53 with the actuator 4
Adjustment screw holes 55 and 56 are provided so as to correspond to screw holes (not shown) provided in the yoke 60 of No. 0. The adjusting screw holes 55 and 56 face the screw holes of the yoke 60 when the actuator 40 is inserted into the opening 53, and in FIG. 6, from the lower side to the upper side (direction of arrow C).
In FIG. 1, from the front side of the paper to the other side, the adjusting screw 6
5 and 66 are formed to be inserted.

By changing the screwing depths of the adjusting screws 65 and 66, the adjusting screw hole 55 adjusts the radial direction of the actuator 40, and the adjusting screw hole 56 adjusts the tangential direction of the actuator 40. To do. The adjusting screw holes 55, 56 and the adjusting screw 6
A position adjusting unit is constituted by the reference numerals 5 and 66.

In the die cast base 50,
Screw holes 57 and 58 for fixing as penetrating portions are provided at positions on both sides sandwiching the actuator 40 inserted in the opening 53 from the tracking direction. The screw holes 57 and 58 for fixing are indicated by arrows in FIGS. 6 and 7 after the actuator 40 is inserted into the opening 53 and the actuators 40 are finely adjusted by the screws 65 and 66 and before the bonding. The fixing screws 67 and 68 as pressing members are formed to be inserted in the D and E directions.

By screwing the fixing screws 67 and 68 into the fixing screw holes 57 and 58, the actuator 40
The unillustrated yoke 50 is pressed to sandwich the actuator 40 from both sides in the tracking direction, and the finely adjusted actuator 40 is fixed so as not to move from the adjustment position. This fixing screw hole 5
A fixing member is composed of 7, 58 and fixing screws 67, 68.

The optical pickup 17 according to the first embodiment of the present invention thus constructed has the adjusting screw when the actuator 40 is inserted into the opening 53 of the die cast base 50 shown in FIG. The adjusting screws 65 and 66 are screwed into the holes 55 and 56 in the arrow C direction, and the actuator 40 is attached. Then, the screwing depths of the adjusting screws 65 and 66 are adjusted to adjust the radial direction and the tangential direction of the actuator 40.

When the adjustment of the actuator 40 by the adjusting screws 65 and 66 is completed, the fixing screws 67 and 68 are respectively attached to the fixing screw holes 57 and 58 in the directions of arrows D and E, respectively. Screw into.

The fixing screws 67 and 68 are attached to the actuator 4
By screwing from both sides of 0, the yoke 60 of the actuator 40, which is attached to the die cast base 50 and whose direction is adjusted, is sandwiched from both sides,
The actuator 40 is fixed in the adjustment position.

Then, with respect to the actuator 40 fixed and attached to the die cast base 50 with fixing screws 67 and 68, a gap formed between the die cast base 50 and the actuator 40 in the tracking direction (see FIG. The optical pickup 17 is completed by adhering the dotted line portion (1) and the like) with an adhesive.

In the present embodiment, after the actuator 40 is attached to the die-cast base and the direction thereof is adjusted, the actuator 40 is fixed to the adjusted position from both sides by a plurality of (two in this embodiment) screws. After that, since it is adhesively fixed to the die-cast base, there is an effect that the movement of the position of the actuator due to the contraction of the adhesive agent or the like can be prevented and the adhesive yield can be reduced.

Next, the structures of the second and third embodiments of the optical pickup 17 of the present invention will be described with reference to FIGS. FIG. 8 is a perspective view of a die cast base 70 of the optical pickup according to the second embodiment, and FIG. 9 is a perspective view of a die cast base 80 of the optical pickup according to the third embodiment.

FIGS. 10 to 11 are views showing the optical pickup 17 in which the actuator 40 is mounted on the die cast base 70 (or 80) of the second and third embodiments. FIG. 10 is a bottom view. FIG. 11 is a perspective view.

The second and third embodiments use two fixing screw holes and two fixing screws in the first embodiment as a member for fixing the adjusted actuator. On the other hand, by using the spring member, it is possible to fix the actuator with one fixing screw hole and one screw, and the description of other structures will be omitted because they are similar.

The die cast base 70 used in the second embodiment shown in FIG. 8 has a leaf spring 78 instead of the fixing screw hole 58 and the screw 68 in the first embodiment. It is provided in. Further, at the position where the leaf spring 78 faces the fixing screw hole 57, the repulsive force of the leaf spring 78 becomes the direction (arrow D direction) facing the screwing direction (arrow E direction) of the fixing screw 67. Mounted in position.

The die cast base 70 used in the third embodiment shown in FIG. 9 is replaced with the fixing screw hole 58 and the screw 68 in the first embodiment, and further in the second embodiment. Instead of the leaf spring 78 in the example, a spring 88 is provided on the side surface of the opening 53. Further, the spring 88 is a position facing the fixing screw hole 57, and the repulsive force of the leaf spring 78 is a direction (arrow D direction) facing the screwing direction (arrow E direction) of the fixing screw 67. Attached to.

Therefore, in the second and third embodiments, after the actuator 40 is inserted into the opening 53 and adjustment is made at the time of assembly, the fixing screw 67 is inserted into the fixing screw hole 57 by the arrow E. By screwing in the unillustrated yoke 50 of the actuator 40, the leaf spring 78 (or spring 88)
It will be pushed toward.

As a result, the leaf spring 78 (or the spring 8)
8) and the fixing screw 67 result in being sandwiched from both sides in the tracking direction, and the finely adjusted actuator 40 can be fixed so as not to move from the adjustment position. As a result, by bonding the gap formed between the die cast base 50 and the fixed actuator 40 in the tracking direction with an adhesive,
The optical pickup 17 is completed.

In this embodiment, after the actuator 40 is attached to the die cast base and the direction thereof is adjusted, the actuator 40 is fixed to the adjusted position from both sides by the spring member and one screw, and then the die Since the adhesive is fixed to the cast base, it is possible to prevent the movement of the position of the actuator due to the contraction of the adhesive and reduce the adhesive yield.

In the above-described embodiment, the adjusting method for adjusting the direction of the actuator by using the adjusting screw has been described, but the present invention is not limited to this, and the screw provided on the optical pickup 17 is used. For assembly in which the direction of the actuator is adjusted by another position adjusting method such as using a jig for position adjustment separate from the optical pickup 17 without using a fixing member such as a child. The present invention can also be applied to it.

[0058]

As described above, according to the present invention,
It is possible to prevent the movement of the position of the actuator at the time of bonding and fixing, and reduce the bonding yield.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a first embodiment of an optical pickup used in an optical disk reproducing device of the present invention.

FIG. 2 is a perspective view showing a configuration of an optical disk reproducing device.

FIG. 3 is a perspective view showing a small personal computer equipped with the optical disk reproducing apparatus of the present invention.

FIG. 4 is a circuit block diagram of an optical disk reproducing device.

FIG. 5 is a transparent plan view of the optical disk reproducing device.

FIG. 6 is a perspective view of a die cast base 50 used in the optical pickup 17 of the first embodiment.

FIG. 7 is a perspective view of the optical pickup 17 according to the first embodiment.

FIG. 8 is a perspective view of a die cast base 70 used in the optical pickup 17 of the second embodiment.

FIG. 9 is a perspective view of a die cast base 80 used in the optical pickup 17 of the third embodiment.

FIG. 10 is an optical pickup 1 according to second and third embodiments.
The bottom view of 7.

FIG. 11 is an optical pickup 1 according to second and third embodiments.
7 is a perspective view of FIG.

[Explanation of symbols]

1 Optical disc playback device 2 optical disc 10 trays 11 cabinets 12 Guide rail 13 Guide protrusion 14 Slide rail 15 Disk mount 16 turntable 17 Optical pickup 18 mechanical chassis 19 eject button 20 Eject lock mechanism 40 actuators 42 guide bearing (first guide bearing) 43 Guide shaft 44 Objective lens 45 Flexible printed circuit board 46 connector 50, 70, 80 Die cast base 52 guide bearing (second guide bearing) 53, 54 opening 55, 56 Adjustment screw hole 57, 58 Screw hole for fixing 60 York 61 DVD optical unit 65, 66 adjusting screw 67, 68 Fixing screw 78 leaf spring 88 spring

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5D117 AA02 CC07 GG00 KK21 KK23                 5D119 AA38 BA01 NA02 NA07                 5D789 AA38 BA01 NA02 NA07

Claims (11)

[Claims] 1. An actuator for movably holding the objective lens is attached to an optical system base for making laser light incident on the objective lens, the position of the actuator is adjusted, and the adjusted actuator is attached to the optical system base. The optical pickup bonded by means of the above-mentioned method, further comprising a fixing member for fixing the actuator so that the actuator does not move from the adjusted position after the position adjustment of the actuator and before the adhesion. 2. The optical pickup according to claim 1, wherein the fixing member includes a plurality of pressing members arranged at positions sandwiching the actuator and pressing the actuator. 3. The optical system base has a plurality of penetrating portions provided in a plurality of portions adjacent to the actuator and sandwiching the actuator, and the fixing member passes through each of the penetrating portions of the actuator. The optical pickup according to claim 1, comprising a plurality of screw members for pressing the side surfaces. 4. The optical system base has a penetrating portion provided at a position adjacent to the actuator, and a spring member provided at a position facing the penetrating portion, and the fixing member is the penetrating portion. 2. The optical pickup according to claim 1, further comprising a screw member that pushes a side surface of the actuator through a portion in a direction in which the spring member is provided. 5. An actuator for movably holding the objective lens is attached to an optical system base for making laser light incident on the objective lens, the position of the actuator is adjusted, and the adjusted actuator is attached to the optical system base. And an optical pickup having a fixing member for fixing the actuator so that the actuator does not move from the adjusted position after the position adjustment of the actuator and before the adhesion, and a signal recording surface. An optical disc device comprising: a turntable on which an optical disc including the optical disc is mounted; and a guide member that guides the optical pickup in a radial direction of the optical disc mounted on the turntable. 6. The optical disk device according to claim 5, wherein the fixing member in the optical pickup is composed of a plurality of pressing members arranged at positions sandwiching the actuator and pressing the actuator. . 7. The optical system base in the optical pickup has a plurality of penetrating portions provided in a plurality of portions that are adjacent to the actuator and sandwich the actuator, and the fixing member in the optical pickup is 6. The optical disk device according to claim 5, comprising a plurality of screw members that press the side surface of the actuator through the respective penetrating portions. 8. The optical system base in the optical pickup has a penetrating portion provided at a position adjacent to the actuator, and a spring member provided at a position facing the penetrating portion, 6. The optical disk device according to claim 5, wherein the fixing member in the optical pickup is a screw member that pushes a side surface of the actuator through the penetrating portion in a direction in which the spring member is provided. 9. The optical disk according to claim 6, wherein the fixing member in the optical pickup is arranged so as to sandwich the actuator in the tracking direction of the optical pickup. apparatus. 10. A method of manufacturing an optical pickup including an actuator that movably holds an objective lens, and an optical system base that makes laser light incident on the objective lens, wherein the position of the actuator is adjusted when the actuator is attached to the optical system base. And, after adjusting the position of the actuator, fixing the actuator so that the actuator does not move from the adjusted position, and adhering the fixed actuator to the optical system base, A method of manufacturing an optical pickup, comprising: 11. An optical pickup comprising an actuator for movably holding an objective lens and an optical system base for making laser light incident on the objective lens, wherein the position of the actuator is adjusted when the actuator is attached to the optical system base. After the position adjustment of the actuator, the actuator is fixed by using a fixing member so that the actuator does not move from the adjusted position, and the fixed actuator is bonded to the optical system base. An optical pickup featuring.