JP3498830B2 - Optical pickup - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to relates to a preferred optical pickup <br/> up to an optical disc apparatus using an optical disc such as a magneto-optical disk.

[0002]

2. Description of the Related Art An optical pickup is attached to an optical disk device and makes laser light incident on the optical disk to record information on the disk surface or reproduce recorded information.

In FIG. 10, a conventional optical pickup 5 is used.
Reference numeral 0 denotes a carriage 51 attached to the optical disk device to reciprocate, a light projecting / receiving unit 18 attached to the carriage 51, a flexible substrate 19 and a circuit board 21 for supplying an electric signal to the light projecting / receiving unit 18, and this circuit board. 21
And a cover 55 that covers.

A collar-shaped stem portion 23a integrally formed with a metal main body 23 is formed in the light emitting and receiving portion 18, and a light emitting element such as a laser diode and a light receiving element such as a photodiode are formed in the main body 23. Optical components such as integrated prisms are stored. Further, curved curved surface portions 25 are formed on both side surfaces of the stem portion 23a, and a plurality of terminals 100 of the light emitting element and the light receiving element are projected outward from the bottom portion 18b thereof. The front surface of the stem portion 23a, which is the opposite side of the bottom portion 18b, serves as an attachment reference surface for attaching the light emitting / receiving portion 18 to the carriage 51. Then, on the side opposite to the terminal 100 of the main body, there is provided a light projecting / receiving surface 33 having a window portion through which laser light is emitted and incident.

Electronic components (not shown) are provided on the surface of the circuit board 21.
Are soldered, and a groove portion 60, which is partially cut away, is formed in the peripheral portion thereof. By inserting the terminal 100 of the light emitting / receiving unit 18 into the groove 60 of the circuit board 21 and soldering the terminal 100, the terminal 100 and the circuit board 21 are electrically connected. The circuit board 21 constitutes a circuit for stably driving the light emitting element of the light emitting / receiving unit 18.

The cover 55 is a box body formed by bending a metal plate so as to have one opening, and both side walls of the cover 55 are formed by notching partly and bending the claw portions 61.
Are formed. Then, a part of the flexible substrate 19 and the circuit board 21 are attached to the side of the bottom portion 18b of the light emitting and receiving portion 18 described above, and the cover 55 is covered so as to abut the stem portion 23a of the light emitting and receiving portion 18.

The carriage 51 is made of a metal material such as aluminum and is die-cast in the shape of a box having a relatively large thickness. The carriage 51 extends from the body 62 in the same direction with a certain distance. It is composed of two arm portions 63a and 63b having different lengths. Then, a stepped portion 65 is provided on the inner side of both the arm portions 63a and 63b.
Further, the concave portions 66 are formed in the vicinity of the step portion 65, respectively. Further, a curved groove portion 67 is formed in the step portion 65, and a part of the groove portion 67 serves as a mounting reference surface. A mounting hole 68 is formed inside the recess 66, and the cutout groove 6 is formed at the tip of the long arm 63a.
4 are formed.

Further, the arm portion 63 is provided at the center of the main body 62.
An elongated groove-shaped recess 70 is formed along the extending direction of a and 63b. In the center of the recess 70, a triangular prism-shaped fixing portion 73 having an inclined surface 73a serving as a mounting reference surface is integrally formed with the main body 62. By forming the concave portion 70 in the main body 62, the arm portions 63a,
A thin wall portion 71 connecting the arms 63a and 63b is formed integrally with the main body 62 between the portions 63b. A round hole 72 is formed in the center of the thin portion 71 so as to penetrate therethrough. An objective lens (not shown) arranged directly above the fixing portion 73 is attached and fixed to the carriage 51.

The light emitting / receiving section 18 is attached to the carriage 51.
In the case of incorporating the stem portion 23a, the curved surface portion 25 of the light emitting and receiving portion 18 is fitted into the groove portion 67 of the carriage 51.
After finely adjusting the mounting position of the light emitting / receiving unit 18 with the front surface of the pressing member pressed against the mounting reference surface of the groove portion 67, the light emitting / receiving unit 18 is fixed with an adhesive or the like, and then the cover 55 is covered from the rear side to fix the mounting hole 6
8, the claw portion 61 of the cover 55 is snap-fastened.

FIG. 11 is an enlarged sectional view of the fixed portion 73 of the carriage 51. On the inclined surface 73a of the fixing portion 73, the flat protrusion 7 slightly protruding from the inclined surface 73a.
Two 3b are formed at the same height, and this protrusion 73b
Is subjected to secondary processing and is formed with high precision to serve as a mounting reference surface.

Then, the mirror 40 is attached to the carriage 51.
When assembling the slanted surface 73a of the fixed portion 73
An appropriate amount of an ultraviolet curable adhesive is applied to the protrusion 73b provided on the surface of the mirror 73, and then a jig 4 is applied to the protrusion 73b with a jig.
While the back surface of 0 is abutted and held, ultraviolet rays are radiated to fix and fix the adhesive accurately.

The optical pickup 50 constructed in this way
11, the laser light emitted from the light emitting / receiving surface 33 of the light emitting / receiving unit 18 passes through the round hole 72 of the wall portion 71 and further through the mirror 40, and is perpendicular to the vertical direction from the horizontal direction as shown by the arrow in FIG. The light is bent into and is incident on the objective lens 14.

[0013]

As described above, the carriage 51 of the conventional example uses the aluminum die-casting which has high rigidity and can be processed with high accuracy, and when the mirror 40, which requires the assembling accuracy, is assembled. , It is assembled based on the processed surface of this aluminum die cast. However, the cost of the aluminum die casting itself is high, and the projection 73b provided on the inclined surface 73a of the fixed portion 73 of the carriage 51 is secondarily processed to finish, which causes a cost increase. Therefore, in order to reduce the cost in recent years, when the carriage 51 is replaced with a sheet metal of low cost from aluminum die casting and the mirror 40 is incorporated with the same structure as the conventional optical pickup 50, the inclined surface of the fixed portion 73 is formed. Since 73a must be formed by bending or the like, the positioning accuracy cannot be easily obtained.

[0014] The present invention is intended to solve the conventional problems, aims at a light pickup which is fixedly attached accurately mirror with the carriage consisting of low-cost metal plate subjected Hisage <br/> .

[0015]

As a first solving means for solving the above-mentioned problems, a carriage made of sheet metal,
Attached to this carriage, the light emitting element and the light receiving element
The light emitting and receiving unit that has and the front mounted on the carriage,
The holder that incorporates the light emitting and receiving unit and the carriage
An attached mirror and the carriage is flat.
A plate-shaped bottom plate part and a pair of bends provided on the bottom plate part
And a pair of cut-and-raised pieces, wherein the light emitting and receiving unit is
The main body with a window that serves as the light emitting and receiving surface on the front, and this main body
The holder has a terminal extending from the opposite side to the window
Has a pair of side wall parts and a bottom wall part, and
With the holder assembled,
The light emitting and receiving unit is arranged between the two pieces, and the light emitting and receiving unit and the front
The holder is secured to the pair of cut-and-raised pieces with an adhesive.
With the constant, the mirror is in a state of being disposed between the pair of bent pieces and a fixed configuration by adhesive means to the pair of bent pieces.

As a second solution, the bent piece
It is opposed to each other from the bottom plate portion of the carriage
The structure was formed by cutting and raising .

As a third solution, the mirror
Configuration and the end face of located on the flat side wall surface of the bent piece, formed by protruding the surface portion of the mirror from the end of the bent piece
I did .

As a fourth solution means, the light projecting and receiving light is used.
The main body of the portion has a collar-shaped stem portion, and
The holder is provided with a collar part for fitting the stem part,
Between the cut and raised piece and the stem portion, and the cut and raised piece.
The strain piece and the collar portion are fixed via the adhesive.
It has a different configuration.

As a fifth solution, the carry
The seat has a receiving part bent from the bottom plate part.
However, the adhesive is interposed between the receiving portion and the light emitting / receiving surface.
Then it was fixed. Also, as a sixth solution
The receiving part has an optical path at a position facing the window part.
The holes are formed.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an optical pickup 10 of the present invention. As shown in FIG. 1, the optical pickup 10 includes a carriage 1 made of a metal plate.
2, a lens actuator 110 having an objective lens 14, an emitter / receiver unit 18 for emitting a laser beam to the objective lens 14 through a mirror 40, and for receiving a return light from the objective lens 14; It is composed of a holder 20 in which the light emitting / receiving unit 18 is incorporated, and a cover 22 covering the holder 20.

FIG. 4 is a perspective view showing the carriage 12 of the optical pickup 10 of the present invention. As shown in FIG. 4, the carriage 12 has a rectangular flat plate-like bottom plate portion 24 made of metal, and a first side wall portion 26 erected at a right angle along both longitudinal edges of the bottom plate portion 24. And a second side wall portion 27. One ends of the first and second side wall portions 26 and 27 project from the bottom plate portion 24. The third side wall portions 29, 29, which are erected in the same manner as the first and second side wall portions 26, 27, have a constant space in the longitudinal direction of the side wall portions 26, 27 so that the bottom plate portion is provided. 24 and 24, respectively. Third side wall 2
A round hole 30 is formed in each of 9 and 29 in such a size that it can be inserted by one shaft rod (not shown). A cutout groove 28 is provided at one end of the first side wall portion 26.
Are formed.

Next, a substantially rectangular opening 36 is formed in the bottom plate 24, and a substantially rectangular notch 39 is formed in the outer edge of the bottom plate 24. There is. A pair of opposed bent pieces, that is, a first cut-and-raised piece 38 is formed on a part of the edge portion facing the opening 36, and the opposed surface is a side wall surface 38b. The first cut-and-raised pieces 38 are formed by cutting and raising from the bottom plate portion 24 in a state of facing each other by a bending jig (not shown) and bending them at a substantially right angle. Second cut-and-raised pieces 31 are provided at opposite edges of the notch 39 so as to extend along the first and second side wall portions 26 and 27, respectively. Each of the second cut-and-raised pieces 31 has a flat end surface 31a formed at right angles to the side wall surface 31b. Further, on the remaining edges of the cutout portion 39, the opposing side wall surfaces 3 of the second cut and raised piece 31 are provided.
A convex receiving portion 42 having a side wall surface 42a is vertically formed in a direction orthogonal to 1b. A round hole 72 is formed through the center of the receiving portion 42.

Next, an inclined portion 38a formed by obliquely cutting one corner of the side wall surface 38b is provided at an end portion of each first cut-and-raised piece 38, so that there is no burr and the like with high precision. It is processed and formed. Then, a mirror 40, which will be described later, is incorporated between the side wall surfaces 38b of the first cut-and-raised piece 38 along the inclined portion 38a.

FIG. 5 is a perspective view showing a state in which the mirror 40 is attached to the carriage 12 of the optical pickup 10 of the present invention. The mirror 40 shown in FIG. 5 is a rectangular plate in which a metal film is vapor-deposited on optical glass or an optical resin member. The side surface portion 40a and the front surface portion (or the back surface portion) of the mirror 40
40b is processed with high accuracy. That is, the surface portion 4
Reference numeral 0b is for reflecting the laser light so that the incident laser light is emitted to a predetermined position at a predetermined angle, and the side surface portion 40a is provided with the first cut-and-raised piece 3a.
8 between the side wall surfaces 38b.

FIG. 6 shows a holder 22 of the optical pickup 10 according to the present invention in which a light emitting / receiving section 18 and the like are incorporated and a cover 22 is provided.
It is a perspective view which shows the state which removed. As shown in FIG. 6, the light projecting / receiving unit 18 has a metal main body 23 and a flange-shaped stem portion 23a integrated behind the main body 23,
Curved curved surface portions 25 are formed on both side surfaces of the stem portion 23a. The front surface of the stem portion 23a is a mounting surface for mounting the light emitting and receiving portion 18 on the carriage 12, and the front surface of the main body 23 is a light emitting and receiving surface having a window portion 33a through which laser light enters and exits. It is 33.

The holder 20 has side walls 1 arranged opposite to each other.
6 and a collar portion 4a provided at one end of the both side wall portions 16
And a bottom wall portion 17. In the collar portion 4a,
A curved opening 14 is formed, and the curved surface portion 25 of the stem portion 23a of the light projecting / receiving portion 18 is fitted and arranged in the opening 14 using an adhesive means 13 such as an adhesive. Then, between the both side wall portions 16 of the holder 20, the circuit board 21 which is the same component as the conventional optical pickup 50 is provided.
Etc. are accommodated, and the terminals of the light emitting / receiving unit 18 and the circuit board 21 are fixed by soldering. In addition, the stem portion 23 of the light emitting and receiving portion 18
A part of the flexible substrate 19 is attached and fixed to the lower surface (back surface) of a.

FIG. 2 is a partially enlarged perspective view of the optical pickup 10 of the present invention with the second side wall portion 27 removed. The cover 22 is a metal box body having one opening, and covers the holder 20 through the opening to cover the cover 22.
The mounting claw 22a protruding toward the opening side is fitted into the mounting hole 45 of the holder 20, and then the tip of the mounting claw 22a is bent to be fixed. Note that, as shown in FIG. 1, two holes 46 for positioning adjustment are formed side by side on the side wall facing the opening of the cover 22.

Next, as shown in FIG. 1, the lens actuator 110 includes an actuator base 111, a lens holder 112 which is flexibly held by the actuator base 111, and has an objective lens 14.
It is composed of a yoke 113 integrated with the lens holder 112. And actuator base 1
11 is attached and fixed on the opening 36 of the carriage 12.

Next, the assembly of each component will be described. FIG. 8A is a sectional view of the carriage 12 schematically shown in the vicinity of the center in the optical pickup 10 of the present invention, and in FIG.
A perspective view showing a jig for incorporating and fixing 0 is shown.

First, a jig for incorporating the mirror 40 into the carriage 12 will be described. In FIG. 8B,
At the four corners of the flat base 151 of the jig, substantially rectangular parallelepiped protrusions 152a, 152b, 152c, 152d are provided integrally with the base 151, respectively. And
The protrusions 152a, 152b, 152c, 152d include
A stepped portion 153, which is partially cut away, is provided in the outer direction thereof, respectively, and the protrusions 152a, 15
Locking portions 154 and 154 are attached and fixed to the step portion 153 of 2b, respectively. Then, the protrusions 152a,
An elongated cylindrical shaft rod 155 is attached between the stepped portions 153, 153 of the 152b, and the locking portion 15
It is clamped and fixed by 4,154. This shaft rod 15
5 has the same diameter as the shaft rod used when the optical pickup 10 is attached to the disc device.

In the central portion of the upper surface of the base 151, there is provided a projection 156 having a substantially V-shaped notch 156a at a height lower than that of the projections 152a, 152b, 152c, 152d described above. It is provided integrally with the base 151. The width dimension of the cutout portion 156 a of the protrusion 156 is smaller than the width dimension between the first cut-and-raised pieces 38. Furthermore, the protrusion 15 on the upper surface of the base 151
Pins 157 are provided at positions in front of and behind 6.

Next, a method of incorporating the mirror 40 of the optical pickup 10 of the present invention into the first cut-and-raised piece 38 of the carriage 12 will be described with reference to FIG. First, the mirror 40 is placed on the cutout portion 156a of the protrusion 156 of the jig with the reflecting surface thereof facing downward and further tilted.
The carriage 12 is placed upside down on the jig, and the cutout groove 28 of the first side wall portion 26 of the carriage 12 is fitted to the shaft rod 155 of the jig. Further, the pin 1 is inserted into a pin receiving hole (not shown) of the bottom plate portion 24 of the carriage 12.
57, and the respective third side wall portions 29 are placed on the stepped portions 153 and 153 of the protrusions 152c and 152d, respectively, so that the carriage 12 does not move on the jig base 151. Hold. Then, the bottom plate portion 24 of the carriage 12 becomes a horizontal plane, and the attachment position reference of the first cut-and-raised piece 38 of the carriage 12 and the mirror 40 is set. At this time, the mirror 40 moves the first cut-and-raised piece 38.
The surface portion 40b (reflection surface side) of the mirror 40 is slightly protruded from the inclined portion 38a of the first cut-and-raised piece 38 in the space between the side wall surfaces 38b.

Next, from the back side of the carriage 12, the gap between the side wall surface 38b of the first cut-and-raised piece 38 and the side surface portion 40a of the mirror 40 (the gap dimension width H2 in FIG. 3 is 0.1).
mm or less. ) UV curable adhesive 13 (see FIG. 9).
(See reference) by injecting and filling, and irradiating with ultraviolet rays,
As shown in FIGS. 5 and 9, they are fixed in a floating state. Here, the jig is used to mount the mirror 40 on the notch 156a of the protrusion 156 which is the mounting reference surface, the positioning is adjusted, and the mirror 40 is fixed to the cut-and-raised piece 38, so that the mirror 40 is accurate and simple. It can be attached and fixed to.

Further, as shown in FIG.
The mirror 40 is arranged with a predetermined space provided between the side wall surfaces 38b of the first cut-and-raised piece 38. The surface portion 40b of the mirror 40 is slightly projected from the upper edge of the inclined portion 38a of the first cut-and-raised piece 38 by the jig along the inclined portion 38a. Therefore, the above-mentioned adhesive 13 does not spill over the surface portion 40b of the mirror 40.

A space is formed in the carriage 12 by cutting and raising the first cut-and-raised piece 38, and this space serves as an injection port for filling and applying the adhesive agent 13. Therefore, from the back side of the carriage 12. It is possible to easily inject the adhesive 13 and bond and fix it, and it is possible to improve workability. In particular, an ultraviolet curable adhesive is particularly effective because it is exposed to ultraviolet rays after being filled with the adhesive.

Next, in the lens actuator 110, the opening 3 in the bottom plate 24 of the carriage 12 is arranged so that the objective lens 14 is positioned at the center of the light emitted from the mirror 40.
It is arranged just above 6.

Next, with reference to FIG. 2, a method of incorporating the light emitting / receiving section 18 of the optical pickup 10 of the present invention into the second cut-and-raised piece 31 of the carriage 12 will be described. The light emitting / receiving unit 18 is integrated in the holder 20 in advance. Then, in order to attach and fix the holder 20 incorporating the light emitting / receiving unit 18 to the space (the notch 39) surrounded by the second cut-and-raised pieces 31, 31 and the receiving portion 42 of the carriage 12, first, the fixing is performed. Using a tool, the light emitting / receiving unit 18 is placed in a floating state with a certain gap provided in the space. At this time, as shown in FIG. 3, the window portion 33a of the light emitting and receiving portion 18 and the round hole 72 of the receiving portion 42 are arranged to face each other with a slight gap using the jig.
Further, the end face 31a of the second cut-and-raised piece 31 and the front surface of the flange portion 4a of the holder 20 and the front surface of the stem portion 23a of the light emitting and receiving portion 18 mounted and fixed to the flange portion 4a are arranged to face each other with a slight gap. I am letting you. Next, another jig is inserted into the hole 46 of the holder 20 so that the laser light emitted from the light emitting / receiving unit 18 is incident on the center of the objective lens 14 of the lens holder 112 through the mirror 40. The mounting position of the portion 18 is adjusted.

Then, the second cut-and-raised piece 31 described above is used.
Between the end face 31a of the holder and the front surface of the collar portion 4a of the holder 20 and the stem portion 23a of the light emitting and receiving portion 18, the gap dimension H
1 to 200 μm or less and UV curable adhesive 13
Is injected, filled, and fixed (at a point S in FIG. 7). Further, the light emitting / receiving surface 33 of the light emitting / receiving unit 27 and the receiving unit 4
The window 33 that serves as an optical path for the laser light is also provided between the side wall surface 2 and
The ultraviolet curable adhesive 13 is injected and filled so as not to block the a and the round hole 72, and then fixed and attached (in FIG. 7,
(T part). In this way, at least 4 places the adhesive 1
3 is attached, the light emitting and receiving unit 18 is attached to the carriage 12
Can be securely fixed to.

In the assembled optical pickup 10 of the present invention, the laser light emitted from the light projecting / receiving surface 33 of the light projecting / receiving section 18 passes through the round hole 72 of the receiving section 42, and further through the mirror 40, at a right angle. It bends and enters the objective lens 14. Then, the laser light emitted from the objective lens 14 is condensed on the optical disk surface, that is, the information recorded on the optical disk is read, and the return light reflected from the optical disk surface according to this information is the same. The light is incident on the light receiving element in the light projecting / receiving unit 18 through the optical path. Then, the return light can be converted into a necessary electric signal to read the information on the optical disc. Further, following the information on the optical disc surface, the carriage 12 of the optical pickup 10 moves in a controlled manner along the shaft rod of the optical disc device.

[0040]

As described above, a carriage made of sheet metal, a pair of bent pieces standing upright from the bottom plate of the carriage at a predetermined interval, and arranged between the bent pieces. This mirror is fixed by a bonding means with a predetermined gap between it and the bent piece, so that even with the bending accuracy of the sheet metal, the mirror can be positioned by simply supporting it. It can be adjusted accurately.

Further, since the bent pieces are formed by bending the bottom plate portions of the carriage so as to face each other, the bent pieces are easily deformed in the return direction, but the cut and raised directions are opposite to each other. Moreover, since the mirror is arranged between the bent pieces, it suppresses the deformation in the return direction,
It can be securely and accurately attached and fixed.

Further, since the surface portion of the mirror is projected from the end portion of the bent piece, the adhesive does not squeeze out on the surface portion and the surface portion can be kept in a clean state.
It is possible to accurately reflect light to a predetermined position.

By forming the gap between the bent piece and the mirror to be 0.1 mm or less, it is possible to reduce the amount of change in the linear expansion coefficient on the attachment / bonding surface, and to maintain stable positioning accuracy.

In the method of assembling the optical pickup, a part of the bottom plate portion of the carriage made of sheet metal is cut and raised to form a pair of bent pieces, the mirror is mounted on the jig, and the carriage is mounted on the jig. Is placed, a mirror is provided with a gap provided between the pair of bent pieces, and the gap is filled with an adhesive means to fix the mirror to the bent piece. However, positioning of the mirror can be performed with high accuracy by simply supporting the mirror with a jig.

[Brief description of drawings]

FIG. 1 is a perspective view of an optical pickup of the present invention.

FIG. 2 is a partially enlarged perspective view of the optical pickup of the present invention with the second side wall portion removed.

FIG. 3 is a partially enlarged plan view of the optical pickup of the present invention.

FIG. 4 is a perspective view of a carriage of the optical pickup according to the present invention.

FIG. 5 is a perspective view showing a state in which a mirror is attached to the carriage of the optical pickup of the present invention.

FIG. 6 is a partially enlarged perspective view showing the incorporation of the light emitting / receiving unit and the holder of the optical pickup of the present invention.

FIG. 7 is a plan view of the optical pickup of the present invention.

FIG. 8A shows an optical pickup of the present invention,
FIG. 8B is a schematic cross-sectional view of the vicinity of the center of the carriage, and FIG. 8B is a perspective view showing a jig for incorporating the mirror.

FIG. 9A shows an optical pickup of the present invention,
FIG. 9B is a partially enlarged perspective view of the first cut-and-raised piece and the mirror, and FIG. 9B is a side view thereof.

FIG. 10 is a partially exploded perspective view of a conventional optical pickup.

FIG. 11 is a sectional view of a mirror portion of a conventional optical pickup.

[Explanation of symbols]

10 the optical pickup 12 carriage 13 adhesive 18 emitting and receiving portion 24 bottom plate portion 36 opening 38 bent piece (first cut-and-raised piece) 38a inclined portion 40 mirror 40a side portion 40b surface portion

Claims (6)

(57) [Claims] 1. A carriage made of sheet metal, and this carrier.
Mounted on the door and has a light emitting element and a light receiving element.
A light unit and the light emitting and receiving unit attached to the carriage.
Mounted in the holder and the carriage
And a flat bottom plate.
Section, a pair of bent pieces provided on the bottom plate, and a pair
It has a cut-and-raised piece of
The main body provided with a window part that becomes a surface and the window part of this main body
The holder has a terminal extending from the opposite side, and the holder has a pair of side walls.
Part and a bottom wall part, and the light emitting and receiving part and the holder are assembled.
In the combined state, between the pair of cut and raised pieces,
Place the light emitting / receiving unit and bond the light emitting / receiving unit to the holder.
When it is fixed to the pair of cut-and-raised pieces through an agent,
And the mirror is arranged between the pair of bent pieces.
In this state, the optical pickup is fixed to the pair of bent pieces by an adhesive means. Wherein said bent pieces are formed by cutting and bending so as to face each other from the bottom <br/> plate portion of the carriage
The optical pickup of claim 1, wherein the kite. 3. The end surface of the mirror is a flat surface of the bent piece.
The optical pickup according to claim 2, wherein the optical pickup is located on a side wall surface, and a surface portion of the mirror is projected from an end portion of the bent piece. 4. The main body of the light emitting / receiving unit is a collar-shaped step.
The holder fits the stem portion.
A mating collar is provided, and the cut-and-raised piece and the stem
Between the cut-and-raised piece and the collar part
Claim 1, characterized in that fixed through the serial adhesive
The optical pickup according to any one of 1 to 3 . 5. The carriage is folded from the bottom plate portion.
The receiving part and the light emitting / receiving surface.
Is fixed through the adhesive between
The optical pickup according to any one of claims 1 to 4. 6. The receiving portion has a position facing the window portion.
A hole serving as an optical path is formed in the table.
The optical pickup described in 5.