JPH08287475A - Light receiving/emitting element positioning jig for optical pickup and light receiving/emitting element positioning method - Google Patents

Abstract

PURPOSE: To provide a positioning jig capable of surely positioning a light receiving/emitting element for a base member such as a slide base instead of parts such as a mirror plate of a prism mirror. CONSTITUTION: The positioning jig 230 of the light receiving/emitting element 120 is applied to an optical pickup provided with, the light receiving/emitting element 120. The positioning jig 230 consists of a hold part 240 holding the light receiving/emitting element 120 attached attachably/detachably to the base member 110 and an optical path adjustment part 250 integrated with the hold part 240. The jig 230 positions correctly the light receiving/emitting element 120 held by the hold part 240 to the base member 110. Further, the jig 230 is provided with the optical path adjustment part 250 adjusting the optical path of the light receiving/emitting element 120 for irradiating laser light from a light emission part on an information recording medium through an optical element and making the return light of the laser light light receive to a light receiving part through the optical element.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses, as a base member, a light emitting and receiving element which is used in an optical pickup most suitable for reproducing information from an information recording medium and recording information on the information recording medium. The present invention relates to a positioning jig for a light emitting / receiving element of an optical pickup for positioning the optical pickup and a positioning method for the light receiving / emitting element.

[0002]

2. Description of the Related Art An optical disc apparatus used for an optical disc such as a compact disc is arranged so that an optical pickup can be moved in the radial direction of the optical disc so that information can be reproduced from a desired track of the optical disc. .

A conventional optical pickup is shown in FIG. 15 and FIG.
Is shown in. The conventional optical pickup includes a slide base 510, a light emitting / receiving element 520, a prism mirror 53.
0, a biaxial actuator 540 and the like. A prism mirror 530 is positioned and fixed at the center of the slide base 510 via a mirror plate 550. That is, the prism mirror 530 is the mirror plate 5
It is integrated with 50, and the optical axis direction of the prism mirror 530 is set by rotating the mirror plate in the direction of arrow Q. In addition, the light receiving and emitting element 520
The plate spring 560 causes the biaxial actuator 540 to move toward the slide base 510 and the objective lens 544 to move.
have. In such an optical system, the laser light L emitted from the light emitting portion of the light emitting / receiving element 520 is reflected by the prism mirror 530, passes through the objective lens 544, and is focused on the information recording surface of the disc D. Then, the return light from the disk D is received by the light receiving portion of the light emitting / receiving element 520 via the objective lens 544 and the prism mirror 530.

[0004]

By the way, in this way, the laser light L from the light emitting / receiving element 520 is focused on the information recording surface of the disk D, or the return light from the disk D is surely received / light emitting element 520. In order to enable the light receiving section to receive light, it is necessary to adjust the optical positions of the prism mirror 530 and the light emitting / receiving element 520 as follows. That is, the beam adjustment process and the alignment process described below are required. In the beam adjusting step, with the biaxial actuator 540 removed from the slide base 510,
The prism mirror 530 and the light emitting / receiving element 520 are attached to the slide base 510. In this state, even if the laser light L from the light emitting portion of the light emitting / receiving element 520 is reflected via the prism mirror 530, the laser light L is still reflected by the disk D.
The prism mirror 530 so that it comes to the specified position
It is necessary to rotate the light emitting and receiving element 520 in the arrow Y direction to adjust the position while rotating in the direction of. After that, in the alignment process, the biaxial actuator 540 is positioned with respect to the slide base 510, and the light receiving portion of the light emitting / receiving element 520 actually causes the signal of the return light from the disk D to be read and turned on to the track of the disk D. The position of the light emitting / receiving element 520 is finely adjusted again so as to track.

As described above, the prism mirror 530 is integrally attached to the mirror plate 550, and the mirror plate 550 projects below the slide base 510. Therefore, in order to make the thin slide base 510, the mirror plate 550 is an obstacle. If the conventional slide base 510 has a mirror plate 5
In order to eliminate 50, the prism mirror 530, the slide base 510, the laser coupler 520 and the leaf spring 56.
Although it is necessary to increase the precision of each component of 0 to improve the mutual positional relationship, there is a problem that the cost is increased as a result.

Therefore, the present invention has been made in order to solve the above-mentioned problems, and parts such as a mirror plate of a prism mirror are abolished, and the light emitting / receiving element is surely attached to a base member such as a slide base. An object of the present invention is to provide a positioning jig for a light emitting / receiving element of an optical pickup that can be positioned and a method for positioning a light receiving / emitting element.

[0007]

According to the invention of claim 1, the above object is to provide a base member, an optical element set on the base member, and a light emitting and receiving element set on the base member. A light-receiving unit for irradiating the information recording medium with laser light through the optical element, and a light-receiving unit for receiving return light of the laser light from the information recording medium through the optical element. A positioning jig for a light emitting / receiving element, which is applied to an optical pickup that includes a light emitting element and records information on an information recording medium using a laser beam or reproduces information on the information recording medium, and is a base. A holding portion detachably attached to the member for holding the light emitting / receiving element with respect to the base member, and an optical path adjusting portion integrated with the holding portion. Information recording through In order to irradiate the body and receive the return light of the laser light from the information recording medium to the light receiving portion via the optical element, the light emitting / receiving element held by the holding portion is positioned on the base member to receive light. This is achieved by a positioning jig for a light emitting / receiving element of an optical pickup, which is provided with an optical path adjusting unit for adjusting an optical path of the light emitting element. In the invention of claim 2, preferably, the positioning jig is made of a thin plate having a spring property. In the invention of claim 3, preferably, the optical element includes the reflection mirror and a plane lens. In the invention of claim 4, the above-mentioned object is a base member, an optical element set on the base member, and a light emitting / receiving element set by positioning on the base member. A laser beam including a light emitting and receiving element including a light emitting section for irradiating the information recording medium through the light receiving section and a light receiving section for receiving return light of the laser beam from the information recording medium through the optical element. In a method of positioning a light emitting / receiving element, which is applied to an optical pickup for recording information on an information recording medium or reproducing information on the information recording medium by using, a positioning jig is detachably fixed to a base member. Thus, the light emitting / receiving element is held corresponding to the base member, the laser light from the light emitting portion is applied to the information recording medium through the optical element, and the return light of the laser light from the information recording medium is directed to the optical element. Through In order to receive the light part,
A method for positioning a light emitting / receiving element of an optical pickup, in which the light emitting / receiving element held by the holding portion is positioned by an optical path adjusting section with respect to a base member to adjust the optical path of the light receiving / emitting element Is achieved by In the invention of claim 5, after the light emitting and receiving element is bonded to the base member, the holding portion and the optical path adjusting portion integral with the holding portion are removed from the base member.

[0008]

According to the invention of claim 1, the holding portion of the positioning jig can be detachably attached to the base member. The holding portion holds the light emitting / receiving element with respect to the base member. The optical path adjusting unit positions the light emitting / receiving element held by the holding unit with respect to the base member. As a result, the laser light from the light emitting portion of the light emitting / receiving element is applied to the information recording medium via the optical element, and the return light of the laser light, which is the information recording medium, is received by the light receiving portion via the optical element. it can. After such adjustment, the positioning jig is removed from the base member. According to the invention of claim 4, the positioning jig is detachably fixed to the base member. Thereby, the light emitting / receiving element is held with respect to the base member. The light emitting / receiving element held by the holding portion is positioned by the optical path adjusting portion with respect to the base member. As a result, the laser light from the light emitting portion of the light emitting / receiving element is applied to the information recording medium via the optical element, and the return light of the laser light from the information recording medium can be received by the light receiving portion via the optical element. . Then, the light receiving element is bonded to the base member.

According to the invention of claim 5, after the bonding, the holding portion and the optical path adjusting portion which is integral with the holding portion are removed from the base member. Thus, after the light emitting / receiving element is fixed to the base member, the holding section and the optical path adjusting section which are no longer needed are removed, and the holding section and the optical path adjusting section are reused for positioning the next light receiving / emitting element. be able to.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The examples described below are
Since it is a preferred specific example of the present invention, various technically preferable limitations are attached, but the scope of the present invention is, unless otherwise stated to limit the present invention, in the following description.
It is not limited to these modes.

FIG. 1 is a perspective view showing the optical pickup 100 and the disc D. As shown in FIG. The optical pickup 100 is
A biaxial actuator (also called a biaxial device) 10 and a base member (also called a slide base) 110 are provided. The biaxial actuator 10 has the following configuration. The biaxial actuator 10 shown in FIGS. 1 and 2 has a lens holder 12, a coil bobbin 13, a plurality of elastic supporting members 14a, 14b, 14c, 14d, a fixing member 16 and the like.

In the lens holder 12, the objective lens 11 is attached to an opening 12e formed on one end side which is a free end, and an opening 12c for attaching the coil bobbin 13 is formed on the other end side. ing. The lens holder 12 is composed of an upper holder portion 12a and a lower holder portion 12b integrally formed with a plurality of elastic supporting members 14a, 14b, 14c and 14d by a synthetic resin material. A cutout 12d is formed in a part of one side surface of the opening 12c of the lens holder. Objective lens 1
Reference numeral 1 is a single-lens lens having an aspherical surface on both sides, which is formed of glass or a synthetic resin having a light-transmitting property.

The coil bobbin 13 is formed of a synthetic resin or the like having a square horizontal cross-section having a square through hole 13e in the central portion and is formed in such a size that it can be inserted into the opening 12c of the lens holder 12. On the outer peripheral part of the lens holder 13,
The focusing coil 13a is wound along the optical axis direction of the objective lens 11. Tracking coil 13b
The pair of coil portions constituting the above is formed so that the planar shape thereof is substantially quadrangular. A plurality of terminal portions 21a, 21
Focusing coil 13 is provided on each of b, 21c, and 21d.
The winding start end and the winding end end of a and the tracking coil 13b are wound.

These plural terminal portions 21a, 21b, 21
When the coil bobbin 13 is attached to the lens holder 12 as described above, the c and 21d engage with the tip portions of a plurality of elastic supporting members 14a, 14b, 14c and 14d described later, and are electrically connected by soldering. Connected. The upper portion of the coil bobbin 13 is covered with a cover 24 as shown in FIG.

A plurality of elastic support members 14a, 14b, 14
c and 14d are formed of a material having elasticity and conductivity, such as a metal material. One end of each of the plurality of elastic support members 14a, 14b, 14c, 14d is attached to the lens holder 12, and the other end is attached to the fixing member 16. The plurality of elastic support members 14a, 14b, 14c, 14d are formed in a narrow shape so that the focusing direction F can be reduced.
It can be displaced in two directions of cs and the tracking direction Trk. These plural elastic support members 14a, 14b,
The lens holder 12 is movably supported by 14c and 14d in a direction parallel to the optical axis of the objective lens 11, that is, a focusing direction Fcs and a plane direction orthogonal to the optical axis of the objective lens 11, that is, a tracking direction Trk. .

The base member 110 is made of zinc die cast, for example. A mounting portion (not shown) to which the fixing portion 16 is mounted is provided on the base member 110 so as to project, and a pair of yoke portions 22 is provided on one end side.
a and 22b are provided. Yoke parts 22a and 22b
Are vertically provided from the base member 110 so as to face each other, and the permanent magnet 23 is attached to the yoke portion 22a of the pair of yoke portions 22a and 22b. A gap having a predetermined interval is formed between the yoke portion 22b and the magnet 23, and the focusing coil 13a and the tracking coil 13b are inserted into this gap.

FIG. 3 shows the entire base member 110 shown in FIG. 1 and optical elements and the like set in the base member 110. FIG. 4 is a diagram showing a state in which the light emitting / receiving element 120 and the positioning jig 130 are separated from the base member 110.

The base member 110 has bearings 111, 111 for moving in the direction of arrow S, and guide rods (not shown) for sliding are provided on the bearings 111, 111.
Is designed to pass through. The base member 110 is a reflection mirror (also referred to as a prism mirror) 14 as an optical element.
0 and a plane mirror 142. Reflection mirror 140
Is directly fixed to the bottom surface 110 a of the base member 110. The plane mirror 142 is erected and fixed at a position between the bearings 111, 111. The base member 110 has an inclined fixing portion 110b for adhering and fixing the light emitting / receiving element 120. A hole 110c is formed in this fixed portion 110b, and as shown in FIG.
It can be reflected by the plane mirror 142 through 10c. The laser light L reflected by the plane mirror 142 is vertically raised by the reflection mirror 140 and reflected by the reflection mirror 140,
The information recording surface of the disc D is focused through the objective lens 11 of FIG. The return light L of the laser light reflected on the information recording surface of the disk D is reflected by the reflection mirror 140 and the plane mirror 142 contrary to the above.
Then, the light is received by the light receiving portion of the light emitting / receiving element 120 through the hole 110c. The optical path of the laser light L and the way of arranging the light emitting / receiving element 120 are shown in FIG.

As shown in FIG. 5, the light emitting / receiving element 120 is
The base member 110 is arranged so as to be inclined. As a result, the light emitting / receiving surface of the light emitting / receiving element 120 faces the flat mirror 142 side and is inclined at an angle of a predetermined angle θ1 of preferably less than 90 degrees with respect to the base member 110.

In this case, when the laser light generated from the laser light source of the light emitting / receiving element 120 or the return light is received by the light receiving portion of the light emitting / receiving element 120, the angle θ3 is, for example, 16 °.

As described above, by arranging the light emitting / receiving element 120 so as to be inclined with respect to the base member 110 by a predetermined angle θ1, the thickness H of the slide base 10 can be reduced. This thickness H is, for example, 10 m
It can be m.

In the embodiment of the present invention, the reflection mirror 140 and the plane mirror 142 can be used to bend the laser light or the return light of the laser light twice.
Therefore, the light emitting / receiving element 120 can be arranged in the vicinity of the biaxial actuator 130 as compared with the related art.

Further, as shown in FIG. 1, the plane mirror 14
Reference numeral 2 is close to the bearings 111, 111, and preferably can be arranged below the guide shaft so as to avoid the guide shaft. Therefore, the horizontal projection area can be further reduced to achieve miniaturization.

Next, an example of the internal structure of the light emitting / receiving element 120 shown in FIGS. 3 and 4 is shown in FIG. In FIG. 6, a semiconductor element 124 is provided on the substrate 122.
And the micro prism 126 is arranged. On the substrate 122, a first photodetector group PD1 and a second photodetector group PD2 as light receiving portions are arranged or formed side by side. The first photodetector group PD1 and the second photodetector group PD2 have, for example, a predetermined pattern, and are returned by a read-only optical disc D such as a compact disc, and a focus error signal, a tracking error signal, and a reproduction signal (RF). Signal) can be obtained.

A laser diode chip 130 as a light emitting portion is arranged on the semiconductor element 124. The micro prism 126 has a slope 132. The slope 132 is formed at an angle α, for example. This angle α is preferably 45 °. The inclined surface 132 substantially faces the laser light emitting portion 134 of the laser diode chip 130. A photodiode 140 for monitoring laser light is provided behind the laser diode chip 130.

Next, the positioning jig 23 shown in FIG. 3 and FIG.
The structure of 0 will be described. The positioning jig 230 includes a holding section 240 and an optical path adjusting section 250. The holding part 240 of the positioning jig 230 is formed integrally with the optical path adjusting part 250 as shown in FIGS. 4 and 7. That is, the positioning jig 230 is formed by bending a metal plate having a spring property, for example.

A holding portion 240 of the positioning jig 230 shown in FIG.
Is a base 241, an elastic portion 242, and four arm portions 24.
3, the pressing portion 244 and the like. The base 241 is
As shown in FIGS. 8 and 9, this is a portion that is pressed against and fixed to the base member 110 by a screw N. Base 24
1 is integrated with the elastic portion 242. Elastic part 242
Can be elastically pressed in the arrow R direction by screwing the screw N into the female screw 110d of the base member 110. The arm portion 243 is continuously provided at one end of the elastic portion 242. The four arm portions 243 are configured to hold the left and right side portions 120x of the light emitting / receiving element 120 shown in FIG. The light emitting / receiving element 120 is
It is an almost rectangular parallelepiped package. Light emitting / receiving element 120
Is a flexible printed wiring board 12 for external connection.
It has 0y. The pressing portion 244 is a portion extending from the base portion 241, and by pressing the wide surface 120z of the light emitting and receiving element 120 of FIG. 10, the other surface 120g can be pressed against the fixed portion 110b of the base member 110. ing. The base member 110 has the hole 110c as described above. This hole 110c is
The laser light L is guided to the light receiving portion of the light emitting / receiving element 120, or conversely, the laser light L emitted from the light emitting portion of the light receiving / emitting element 120.
Is guided to the plane mirror 142 in FIG. In this way, the holding part 240 of the positioning jig is
1, elastic portion 242, arm portion 243, pressing portion 244
Is an integrally formed part.

Next, referring to FIGS. 4 and 7, the positioning jig 2
The optical path adjusting unit 250 of 30 will be described. 4 and 7
As shown in FIG. 3, the screw N is formed in the long hole 241 a of the base 241.
Then, as shown in FIG. 9, it is adapted to be screwed into the female screw 110d of the base member 110 through the elongated hole 242a of the elastic portion 242. These holes 241a and 242a
Are long holes that are long in the direction of the arrow X. As shown in FIG. 7, the elongated hole 241 b of the base portion 241 and the elastic portion 242.
The hole 242b is a hole for inserting the rod 300 for position adjustment. A dowel 241c is formed on the base 241 so as to project upward.

The long holes 241a and 242a are at corresponding positions, and the dowel 241c is provided at a position in the arrow X direction so as to be aligned with the long hole 241a. This dowel 24
1c is adapted to enter a hole 110h provided on the bottom surface 110f of the base member 110 of FIG. As shown in FIG. 7, the hole 242b is a circular hole into which the adjusting rod 300 is inserted. On the other hand, slot 24
1b and the long hole 241a are elongated in the arrow X direction.

FIG. 11 is a view of the base portion 241 of FIG. 7 viewed from the back side. FIG. 12 is a view of the elastic portion 242 as viewed from the back side. FIG. 13 is a view of the arm portion 243 of FIG. 7 viewed from the back side.

Next, the light emitting / receiving element 120 described above is used as shown in FIG.
A method of positioning and fixing as shown in FIG. 3 from the above state will be described. First, a beam adjusting process of the laser light L is performed. In this beam adjustment process, the base member 110 is
Reflecting mirror 140, plane mirror 142, light emitting / receiving element 12
0, and the positioning jig 230 is arranged. The biaxial actuator 10 shown in FIG. 1 has not yet been set for the base member 110. In this state, the light emitting / receiving element 1
The position of the light emitting / receiving element 120 is adjusted along the X direction and the Y direction so that the laser light L from the light emitting portion of 20 passes through the plane mirror 142 and the prism mirror 140 so as to be located at a predetermined position of the disk D. .

As a specific adjusting method, the positioning jig 230 is adjusted in the direction of arrow X in FIG. 7, and the light emitting / receiving element 120 is moved and adjusted in the direction of arrow Y. The adjustment of the positioning jig 230 in the arrow X direction is performed as follows. As shown in FIG. 8, screws N attach the base 241 to the base member 110. In this state, the dowel 241c of FIG. 7 is fitted in the hole 110h of the base member 110, as shown in FIG. Accordingly, the base 241 can position the base member 110 in the arrow X direction. Moreover, the long hole 241
a and 242a are used, the base member 11 of FIG.
Even if the female screw 110 d of 0 is formed at a position deviated in the direction of the arrow X due to manufacturing, the screw N can be fixed by attaching the base 241 to the base member 110. Then, as the screw N is screwed in from the state of FIG. 8 to the state of FIG. 9, the elastic portion 242 bends in the direction of the arrow R, so that the arm portion 243 causes the light emitting / receiving element 120 to move.
The side portion 120x can be held so as to be sandwiched. That is, the light emitting / receiving element 120 is held by the arm portion 243 so as not to move in the arrow X direction. In addition, the pressing portion 244 is the wide surface 120
Since the z side is pressed, the light emitting and receiving element 120 is
As shown in FIG. 3, the base member 110 is held by being pressed against the fixed portion 120g of the base member 110.

Next, the adjusting rod 300 is inserted into the hole 242b and the elongated hole 241b as shown in FIG. That is, FIG.
As shown in FIG. 4, the tip of the adjusting rod 300 fits into the hole 110 b of the base member 110. Then, the operator finely operates the other end of the adjusting rod 300 in the arrow V direction, whereby the positioning jig 230 can be finely adjusted in the arrow X direction with respect to the base member 110. As a result, the light emitting / receiving element 12 has the dowel 241c.
Delicate positioning in the X direction of 0 can be performed. Next, the positioning adjustment of the light emitting / receiving element 120 in the arrow Y direction is performed. The positioning adjustment in the arrow Y direction is performed by pushing the light emitting / receiving element 120 in the arrow Y direction with tweezers or a rod-shaped tool. In this way, the light emitting / receiving element 120 is adjusted in the XY directions.

Next, after the above-mentioned beam adjusting process is completed, the process proceeds to the alignment process. The biaxial actuator 10 of FIG. 1 is attached to the base member 110.
Then, with respect to the disk D, the laser light L is emitted from the light emitting portion of the light emitting / receiving element 120 to the plane mirror 142 and the prism mirror 1.
It irradiates through 40 and the return light is reflected.
0, it is taken into the light receiving portion of the light emitting / receiving element 120 via the plane mirror 142. That is, the signal of the information is read by the light receiving portion of the light emitting / receiving element 120 by applying the disc D, and the Y of the light receiving / emitting element 120 is turned on so that the laser light is on-track.
Finely adjust the position in only the direction. The fine adjustment in this case is only the adjustment in the direction of the arrow Y in FIG.
Only the light emitting / receiving element 120 in the positioning jig 230 is finely adjusted in the arrow Y direction (almost vertical direction) without moving itself. In this case, the light emitting / receiving element 120 can be finely adjusted in the arrow Y direction by using an adjusting member such as tweezers or a rod-shaped member.

Next, when such an alignment process is completed, the light emitting / receiving element 120 is attached to the base member 110 shown in FIG.
The fixing member 110b is fixed with an adhesive. After the fixing with the adhesive is completed, the screw N in FIG. 9 is removed, and the positioning jig 230 is removed from the base member 110. The positioning jig 230 can be reused as an adjusting jig when the light emitting / receiving element 120 is attached to the next base member, and resource saving and cost reduction can be achieved.

As described above, in the embodiment of the present invention, the beam adjustment (optical path adjustment) of the laser beam is performed without the need for a plate for rotationally adjusting the reflection mirror such as the prism mirror used conventionally. In this case, the light emitting / receiving element 120
May be adjusted independently in the X and Y directions.
After the light emitting / receiving element 120 is positioned, the light emitting / receiving element 120 is bonded and fixed to a predetermined position of the base member 110. After the bonding is completed, the positioning jig 23
0 has the advantage that it can be removed and reused. To adjust the beam without adjusting the rotation of the prism mirror as in the related art, it is sufficient to adjust the light emitting / receiving element in the X-Y directions, but after removing the optical pickup from the beam adjusting machine once, This optical pickup is set in the alignment adjuster. In the alignment adjuster, the light emitting / receiving element must be finely adjusted only in the Y direction. Therefore, it is necessary that the light emitting / receiving element can be independently adjusted in the XY directions with respect to the base member. In the embodiment of the present invention, the mirror plate and the step of bonding the mirror plate and the mirror plate to the base member, which are conventionally required, can be omitted, and the cost can be reduced. Further, the positioning jig 230 is the light receiving / emitting element 1.
Since it can be removed after the positioning of 20 is adjusted, it is possible to provide a thinner optical pickup.

The present invention is not limited to the above embodiment. In the above-described embodiment, the present invention is applied to an optical disc reproducing device such as a compact disc. However, the present invention is not limited to this, and the positioning jig for the light emitting / receiving element of the optical pickup of the present invention can be applied to an apparatus for recording / reproducing or reproducing another type of optical disk. For example, other types of optical disks are, for example, read-only compact disks (CD-ROM).
And a mini disk (MD) for magneto-optical recording and reproduction.

[0038]

As described above, according to the present invention, the parts such as the mirror plate of the prism mirror can be eliminated and the light emitting / receiving element can be reliably positioned with respect to the base member such as the slide base. it can.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an optical pickup and a disc to which a positioning jig for a light emitting / receiving element of the optical pickup of the present invention is applied.

FIG. 2 is a perspective view of the biaxial actuator shown in FIG.

FIG. 3 is an assembled perspective view showing a base member of the optical pickup, a light emitting / receiving element, and a positioning jig.

FIG. 4 is an exploded perspective view showing a state in which the light emitting / receiving element and the assembly jig in FIG. 3 are removed.

FIG. 5 is a diagram showing a positional relationship between a reflection mirror, a plane mirror, and a light emitting / receiving element.

FIG. 6 is a diagram showing an example of an internal structure of a light emitting / receiving element.

FIG. 7 is a perspective view showing a positioning jig.

FIG. 8 is a view showing a state in which a positioning jig is attached to a base member.

FIG. 9 is a diagram showing a light emitting / receiving element held by an arm portion of a positioning jig.

FIG. 10 is a view showing a state in which a dowel of a positioning jig is inserted into a hole of a base member.

FIG. 11 is a bottom view showing the base of the positioning jig.

FIG. 12 is a bottom view showing the elastic portion of the positioning jig.

FIG. 13 is a rear view showing the arm section.

FIG. 14 is a diagram showing an operation for finely adjusting the positioning jig with respect to the base member.

FIG. 15 is a perspective view showing the structure of a conventional optical pickup.

16 is a diagram showing a conventional optical pickup of FIG.
The figure which shows the state which is going to adhere | attach the mirror plate of a prism mirror with respect to a slide base.

[Explanation of symbols]

 110 Base Member 120 Light-Emitting / Receiving Element 140 Prism Mirror (Optical Element) 142 Plane Mirror (Optical Element) 230 Positioning Jig 240 Holding Part for Positioning Jig 250 Optical Path Adjusting Part for Positioning Jig

Claims (5)

[Claims] 1. A base member, an optical element set on the base member, and a light emitting / receiving element set on the base member by positioning the laser beam to an information recording medium via the optical element. Information is recorded on an information recording medium by using a laser beam, which is provided with a light emitting and emitting unit that emits light, and a light emitting and receiving unit that includes a light receiving unit for receiving return light of laser light from the information recording medium via an optical element. A positioning jig for the light emitting / receiving element, which is applied to an optical pickup that records or reproduces information from an information recording medium, and is detachably attached to the base member to hold the light emitting / receiving element with respect to the base member. And a holding portion for performing the optical path adjusting portion that is integrated with the holding portion.The laser light from the light emitting portion is irradiated onto the information recording medium through the optical element, and the laser light from the information recording medium is emitted. Return of An optical path adjusting section for positioning the light emitting / receiving element held by the holding section on the base member and adjusting the optical path of the light receiving / emitting element so that the light is received by the light receiving section via the optical element. A positioning jig for a light emitting / receiving element of an optical pickup, which is characterized in that 2. A positioning jig for a light emitting / receiving element of an optical pickup according to claim 1, which is made of a thin plate having a spring property. 3. The positioning jig for a light emitting / receiving element of an optical pickup according to claim 1, wherein the optical element includes a reflection mirror and a plane lens. 4. A base member, an optical element set on the base member, and a light emitting and receiving element set on the base member by positioning the laser beam to the information recording medium via the optical element. Information is recorded on an information recording medium by using a laser beam, which is provided with a light emitting and emitting unit that emits light, and a light emitting and receiving unit that includes a light receiving unit for receiving return light of laser light from the information recording medium via an optical element. In a method of positioning a light emitting / receiving element applied to an optical pickup for recording or reproducing information on an information recording medium, a light receiving / emitting element is attached to a base member by detachably fixing a positioning jig to the base member. Correspondingly held, the information recording medium is irradiated with the laser light from the light emitting portion through the optical element, and the return light of the laser light from the information recording medium is received by the light receiving portion through the optical element. The light receiving / emitting element held in the holding section is positioned with respect to the base member by the optical path adjusting section to adjust the optical path of the light receiving / emitting element, and the light receiving / emitting element is bonded to the base member. Positioning method of light emitting element. 5. The method for positioning a light emitting / receiving element of an optical pickup according to claim 4, wherein after the light emitting / receiving element is adhered to the base member, the holding portion and the optical path adjusting portion integral with the holding portion are removed from the base member.