JP2012089208A - Conductive member, mounting structure of optical element, and pickup device with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide a mounting member with an optical element.SOLUTION: A mounting structure of an optical element 10 includes the optical element 10, a conductive member 20 equipped with the optical element 10, and a mounting member 110 equipped with the optical element 10 and the conductive member 20, the mounting member 110 is provided with the conductive member 20, and the conductive member 20 provides the mounting member 110 with the optical element 10. The conductive member 20 is used to equip the mounting member 110 with the optical element 10, and a conductive member body part 21 is provided with a locking part 28 that can equip the mounting member 110 with the conductive member body part 21. The locking part 28 is formed by being bent near an end part 22 of the conductive member body part 21. The locking part 28 has an inclination part 26 that can equip the mounting member 110 with the conductive member body part 21. A contact force generating part 29 for generating restoration elastic force to the mounting member 110 is provided at the end part 22 of the conductive member body part 21.

Description

  The present invention relates to a conductive member, an optical element mounting structure, and a pickup device including the same.

  A disk device pick-up device is used to read data from the disk. A disk device is used to record data on the disk. Examples of the disc include “CD” (Compact Disc) (trademark) and “DVD” (registered trademark) (Digital Versatile Disc).

  As for the optical element mounting structure and the optical pickup device including the same, for example, even when the members are bonded and fixed with a gap between them, the adhesive is peeled off, the strength is reduced, and the positional deviation occurs. There are a bonding structure without a gap, an optical head device using this bonding structure, and a bonding method (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2004-10759 (pages 1, 4 and 1-6)

  However, in the conventional optical pickup device, there is a concern that a complicated operation is involved in the manufacturing process of the optical pickup device. In addition, since complicated operations are involved in the manufacturing process of the optical pickup device, it has been difficult to keep the price of the optical pickup device low.

  In order to solve the above problems, an optical element mounting structure according to claim 1 of the present invention includes an optical element, a conducting member equipped with the optical element, and an attachment equipped with the optical element and the conducting member. And the mounting member is provided with the conducting member, and the conducting member is provided with the optical element by the conducting member.

  An optical element mounting structure according to a second aspect is the optical element mounting structure according to the first aspect, wherein the optical element is mounted on the conducting member.

  An optical element mounting structure according to claim 3 is the optical element mounting structure according to claim 1, wherein the optical element mounting structure includes a fixing member used when the optical element is mounted, and the mounting is performed by the fixing member. The optical element is fixed to a member.

  The optical element mounting structure according to claim 4 is the optical element mounting structure according to claim 3, wherein the optical element mounting structure according to any one of claims 1 to 3, A light receiving element is used as an optical element, a flexible substrate is used as the conducting member, a housing is used as the mounting member, and a cover is used as the fixing member.

  The conducting member according to claim 5 is a conducting member used when an optical element is mounted on the mounting member, and a locking portion that allows the mounting member main body to be mounted on the mounting member is provided on the conducting member main body. It is provided.

  A conductive member according to a sixth aspect is the conductive member according to the fifth aspect, wherein the locking portion is formed in the vicinity of an end of the conductive member main body.

  The conducting member according to claim 7 is the conducting member according to claim 5 or 6, wherein the locking portion is an inclined portion that allows the mounting member to be equipped with an end of the conducting member main body. It is characterized by having.

  The conducting member according to claim 8 is the conducting member according to any one of claims 5 to 7, wherein the contact force generating portion that generates a restoring elastic force to the mounting member is the conducting member main body portion. It was provided in the edge part of this.

  A conductive member according to a ninth aspect is the conductive member according to the eighth aspect, wherein the contact force generating portion is folded back with respect to the conductive member main body.

  The optical element mounting structure according to a tenth aspect is the optical element mounting structure according to any one of the first to fourth aspects, wherein the conductive member is any one of the fifth to ninth aspects. The conducting member described is used.

  A pickup apparatus according to an eleventh aspect has the optical element mounting structure according to any one of the first to fourth aspects or the tenth aspect.

  According to the present invention, when the mounting member is equipped with the optical element, the optical element is provided on the mounting member by the conducting member provided on the mounting member.

  Further, according to the present invention, the optical element is easily adjusted in position on the mounting member by the conducting member. Therefore, it is possible to configure a pickup device that can keep the price low.

It is the schematic which shows one Embodiment of the attachment structure of the conduction | electrical_connection member and optical element which concern on this invention. It is the schematic which shows the state by which the conduction member which has an optical element is equipped with an attachment member. It is the schematic which shows the state by which the conduction member which similarly has an optical element is provided in an attachment member. It is the schematic which shows the state by which the conduction member which similarly has an optical element is provided in an attachment member. It is the schematic which shows the state with which the conduction member which similarly has an optical element was equipped with the attachment member. It is a top view which shows the pick-up apparatus which concerns on this invention. It is a disassembled perspective view which shows the pick-up apparatus which concerns on this invention. It is the schematic which shows a pick-up apparatus and a disk apparatus provided with the same.

  Hereinafter, an embodiment of a conductive member, an optical element mounting structure, and a pickup device including the conductive member according to the present invention will be described in detail with reference to the drawings.

The head main body assembly 7 constituting the driving device assembly 5 includes a substantially flat base portion 80, a pair of long round bar-like supports 91 and 92 attached to the substantially flat base portion 80, and And a head driving device 90 movably mounted on a pair of long round bar-like supports 91 and 92. In addition, the optical head driving device 90 includes a pair of optical members 130 that irradiate the signal surface Ma of the disk M, which is one of the media M, with light such as laser light in focus. Yes. The base portion in this specification is, for example, a base or base such as a substantially plate-like one or a substantially substrate-like one, and is referred to for convenience. Further, the media means, for example, a disk on which data, information, signals, etc. are stored.

  The motor main body assembly 50 constituting the drive device assembly 5 includes a substantially flat substrate (not shown) having a circuit and a motor drive device attached to the substantially flat substrate so as to be energized. 70. The motor driving device 70 is also equipped with a small electric motor (not shown) for generating a rotational driving force, a rotating shaft (not shown) provided in the small electric motor, and a disk M mounted on the rotating shaft. And a rotation holding part 73.

  Further, as the drive device assembly 5 and the disk device 1 including the drive device assembly 5, for example, a traverse mechanism 5 and the optical disk device 1 including the same are used.

As the pickup device 100 shown in FIGS. 6 to 8, for example, a laser light (LASER: light amplification by) is passed through an optical member 130 that is an objective lens.
An optical pickup device 100 that can emit a simulated transmission of radiation is used. For example, an optical pick-up or an optical pick-up unit is abbreviated as “OPU”. Further, the objective lens is abbreviated as “OBL”, for example.

  Data such as information recorded on the medium M such as the disk M is reproduced by the laser light focused by the OBL 130 of the OPU 100 provided in the drive device assembly 5 of the disk device 1. Further, data such as information is recorded on the medium M such as the disk M by the laser beam focused by the OBL 130 of the OPU 100 provided in the drive device assembly 5 of the disk device 1. Further, data such as information recorded on the medium M such as the disk M is erased by the laser beam focused by the OBL 130 of the OPU 100 provided in the drive device assembly 5 of the disk device 1.

  The OPU 100 that constitutes the drive unit assembly 5 of the disk device 1 reproduces data, information, and signals recorded on various media M such as various disks M, and various media such as various disks M that are writable or rewritable. Data, information, and signals are recorded in M, and data, information, and signals of various media M such as various writable or rewritable discs M are erased.

The OPU 100 constituting the drive unit assembly 5 of the disk device 1 includes, for example, “CD” (Compact Disc) (trademark) series / standard media and “DVD” (registered trademark) (Digital Versatile Disc) series / Standard media, “HD DVD” (High Definition DVD) (registered trademark) series / standard media, and “CBHD (China Blue High-Definition)” which is a media based on standards defined in China (example: The old name “CH-DVD”) series / standard media and the “BD” (Blu-ray / Blu-ray Disc) (registered trademark) series / standard media. The OPU 100 that constitutes the drive device assembly 5 of the disk device 1 corresponds to, for example, at least one medium selected from the group consisting of the various media. More specifically, the OPU 100 constituting the drive device assembly 5 of the disk device 1 corresponds to any one of the plurality of media.

  Examples of the medium M include the above-described various optical discs M, and a medium M having the following form is also included. For example, the disk M may be an optical disk M provided with a signal surface portion Ma on both sides of the disk and capable of data writing / erasing and data rewriting. Further, as the disk M, for example, an optical disk M provided with a two-layer signal surface portion Ma and capable of data writing / erasing, data rewriting and the like can be cited. In addition, for example, an optical disc for “HD DVD” and / or “Blu-ray / Blu-ray Disc” provided with a three-layer signal surface portion and capable of data writing / erasing, data rewriting, etc. (see FIG. Not shown). Further, for example, a “Blu-ray / Blu-ray Disc” optical disc provided with a four-layer signal surface portion and capable of data writing / erasing, data rewriting, and the like (not shown) is also included. In addition, for example, an optical disk M that can perform various kinds of writing on the label or the like by irradiating a laser beam on the side of the label surface of the optical disk M is also included. The signal surface portion Ma and the label surface portion of the optical disc M are configured to include a thin layer such as a metal thin film, for example. Data, information, a signal, etc. are recorded on the signal surface part Ma comprised with a metal thin film etc., and an image etc. are recorded on a label surface part. The signal surface portion Ma of the optical disc M is configured as a signal layer Ma configured to include, for example, a thin metal layer. As described above, the various optical disks M include optical disks having a multi-layer / multi-layer structure in various forms. For convenience, various types of optical disks will be collectively described as an optical disk M.

  Further, as the disk device 1 shown in FIG. 8, for example, an optical disk device 1 capable of emitting laser light is used. More specifically, as the disk device 1, for example, an optical disk device 1 corresponding to various optical disks M such as “CD”, “DVD”, “HD DVD”, “CBHD”, “BD”, and the like is used. Further, as the driving device assembly 5 constituting the disk device 1, for example, in the radial direction of the optical disk M so as to cross a substantially spiral signal portion (not shown) such as pits and tracks of the optical disk M. A traverse mechanism 5 is used that is configured so that the OPU 100 can be reciprocated along a substantial distance.

  Further, as the OPU 100 constituting the optical disc device 1 or the traverse mechanism 5, for example, an OPU 100 corresponding to the various optical discs M is used. Further, as the supports 91 and 92 that constitute the optical disk device 1 or the traverse mechanism 5 and support the OPU 100 movably, for example, slide shafts 91 and 92 having substantially straight round bar shapes are used.

  As the drive device 40 that rotates the optical disk M, a disk drive device 40 that includes a spindle motor, a turntable 73, and the like and that rotates the optical disk M is used. The turntable 73 provided on the spindle motor of the drive device 40 has both functions of aligning the optical disk M and ensuring stabilization during high-speed rotation of the optical disk M.

  Further, as the base part 80 constituting the optical disc device 1 or the traverse mechanism 5, for example, a pair of supports 91 and 92 on which the OPU 100 is movably mounted, a drive device 40 having a spindle motor, a turntable 73, and the like, A substantially flat chassis 80 to which is attached is used. The chassis means a built-in table on which, for example, components are mounted.

The optical disk device 1 includes the traverse mechanism 5 having the OPU 100, the slide shafts 91 and 92, the disk drive device 40, and the chassis 80. The optical disk device 1 and the traverse mechanism 5 constituting the disk device 1 are configured to include other components in addition to the various components described above, but detailed description of the other components is omitted here.

  Information is recorded on the optical disc M (FIG. 8) by a laser beam emitted from an optical member (not shown) that constitutes the light emitting element when current is supplied to an optical member (not shown) that constitutes the light emitting element. The information recorded on the optical disc M is reproduced, or the information recorded on the optical disc M is erased. Examples of the light emitting element include a semiconductor laser.

  The OPU 100 shown in FIGS. 6 to 8 includes an optical member so-called laser diode (LD) (not shown) that irradiates the optical disc M (FIG. 8) with laser light. The OPU 100 also includes a drive circuit unit so-called laser driver (LDD: LD driver) (not shown) that allows the LD to emit light by flowing electricity.

  In addition, the OPU 100 includes a conductive member 20 that electrically connects electrical components such as an LD, an LDD, a PDIC (photo diode IC), a photo detector (PD), and a front monitor diode (FMD). Is provided. Examples of the conductive member 20 include flexible substrates such as flexible flat circuit bodies and flexible printed circuit bodies. The flexible flat circuit body (flexible flat circuit / flexible flat cable) is abbreviated as “FFC”. A flexible printed circuit (flexible printed circuit / flexible printed cable) is abbreviated as “FPC”.

  For example, electricity is supplied from the LDD (not shown) to the LD through the FPC 20, and laser light is output from the LD. For example, a laser beam of 0.2 to 1000 mW (milliwatt) for “CD” capable of emitting an infrared laser beam having a wavelength of about 765 to 840 nm (nanometer) and a reference wavelength of about 780 nm is emitted from the LD. Is done. Further, for example, 0.2 to 1000 mW laser light for “DVD” that can emit red laser light having a wavelength of about 630 to 685 nm and a reference wavelength of about 635 nm or 650 nm is emitted from the LD. The LD includes, for example, a first wavelength laser beam having a reference wavelength of approximately 780 nm and a wavelength of approximately 765 to 840 nm, and a second wavelength having a reference wavelength of approximately 635 nm or 650 nm and a wavelength of approximately 630 to 685 nm. And a two-wavelength LD capable of emitting a wavelength laser beam.

  Depending on the design / specifications of the optical disc apparatus 1, OPU 100, etc., for example, the wavelength is about 340 to 450 nm, preferably about 380 to 450 nm, more preferably more than about 400 nm to 450 nm or less, and the reference wavelength is about 405 nm. Laser light of 0.2 to 1000 mW for “CBHD”, “HD DVD”, and “Blu-ray / Blu-ray Disc” capable of emitting laser light is emitted from the LD. In this case, the LD has, for example, a first wavelength laser beam having a reference wavelength of about 780 nm and an emission wavelength of about 765 to 840 nm, a reference wavelength of about 635 nm or 650 nm, and an emission wavelength of about 1. It is possible to emit laser beams of a plurality of types of wavelengths: a second wavelength laser beam of approximately 630 to 685 nm and a third wavelength laser beam having a reference wavelength of approximately 405 nm and an emission wavelength of approximately 340 to 450 nm. It is configured as a special LD. Further, as the LD, various LDs such as a single wavelength LD capable of emitting the laser light of each wavelength can be used. Further, as the LD, an LD capable of emitting laser light having at least one of the above wavelengths can be used.

For example, a laser beam having an output value of 0.2 to 1000 mW, specifically 0.5 to 800 mW, is emitted from the LD. For example, when the laser beam has an output value of less than 0.2 mW, the amount of the laser beam that is reflected after reaching the optical disc M and reaches a light receiving element (not shown) is insufficient. When reproducing each data on the optical disc M, a laser beam having an output value of several to several tens of mW, for example, 0.2 mW or more, preferably 0.5 mW or more and 20 mW or less is sufficient. When writing each data or the like on the optical disc M, a laser beam having an output value of several tens to several hundreds mW is required. For example, when writing each data or the like on the optical disc M at high speed, a pulse laser beam having a high output value of more than 20 mW, specifically 200 mW, 400 mW, 600 mW, 800 mW, 1000 mW, or the like may be required.

  The OPU 100 includes an optical member so-called diffraction grating (in-line grating) (not shown) that divides a single laser beam into a plurality of parts. The first wavelength laser beam and the second wavelength laser beam emitted from the LD are divided into a plurality of regions such as four divisions, and a main beam (0th order light) and two sub beams (± first order diffracted light beams). ) And at least three beams.

  The OPU 100 also includes a light receiving element 10 that receives a part of the laser light emitted from the LD, for example, an FMD. The light receiving element 10 is configured as an FMD to which a part of laser light is irradiated. The light receiving element 10 monitors the laser beam output from the LD 10 and applies feedback for controlling the LD.

  The OPU 100 also includes a light receiving element that receives the laser light reflected from the signal layer Ma of the optical disc M, such as a photodetector, a PDIC, or a photodetector (not shown). The PD (not shown) includes a main light receiving portion (not shown) having a substantially rectangular shape in plan view corresponding to a main beam (0th order light) transmitted through a plurality of divided diffraction gratings such as a quadrant type, and a diffraction (not shown). It is configured to include at least three light receiving parts, which are a pair of sub light receiving parts (not shown) in plan view corresponding to a pair of sub beams (± first-order diffracted light beams) diffracted and branched by transmitting through the grating. The The main light receiving portion having a substantially rectangular shape in plan view is divided into four substantially equal parts and includes four segments having a substantially rectangular shape in plan view. In addition, the sub-light-receiving part having a substantially rectangular shape in plan view is divided into four substantially equal parts and includes four segments having a substantially rectangular shape in plan view. As described above, the OPU 100 is equipped with a PD having a plurality of light-receiving units each having a plurality of substantially rectangular segments in plan view. A segment means one of parts divided into several parts, such as a part and a fragment.

  The PD receives laser light reflected from the signal layer Ma of the optical disc M, converts the signal into an electrical signal, and detects data, information, and signals recorded on the signal layer Ma of the optical disc M. ing. The PD receives the laser beam reflected from the signal layer Ma of the optical disk M, converts the signal into an electric signal, and servo mechanism of the lens / holder assembly 193 including the lens holder 140 with the OBL 130 constituting the OPU 100. It is meant to operate. The OPU 100 reads, for example, data / information / signal recorded on the optical disc M, writes data / information / signal on the optical disc M, and erases data / information / signal recorded on the optical disc M. In this case, each laser beam is irradiated on each light receiving portion of the PD, thereby detecting a main information signal of the optical disc M, a focus error signal, a tracking error signal, and the like for the optical disc M.

  Further, according to the design / specifications of the optical disc apparatus 1 and the OPU 100, the OPU 100 includes a covering member, for example, a cover 30 (FIG. 7) that protects various components of the OPU 100. When the OPU 100 is assembled, for example, a cover 30 that protects various components is provided on the upper side of the OPU 100. The cover 30 is press-molded using, for example, a thin metal plate having excellent heat dissipation. Instead of the thin sheet metal cover 30, for example, a synthetic resin black cover 30 may be provided on the upper side of the OPU 100.

The OPU 100 also includes a housing 110 (FIGS. 6 and 7) in which various optical system parts, electrical system parts, drive system parts, and the like are provided. The housing means, for example, a box in which an object such as an apparatus or a part is accommodated, a box shape, or something similar to a box.
The housing 110 is formed using, for example, a metal material having excellent heat dissipation characteristics or a resin material having excellent sliding characteristics.

  As an optical system component mounted on the substrate 110B, for example, on the housing 110, for example, a laser diode, a half-wave plate (1 / 2λ plate), a wide-band quarter-wave plate with a limited aperture (¼λ plate) , Liquid crystal correction element (LCD: liquid crystal device / liquid crystal display), diffractive optical element (DOE: diffraction optical element), diffraction grating, divergent lens, prism, polarization beam splitter, dichroic filter, collimator lens, beam expander lens , Half mirror, reflect mirror, total reflection mirror, objective lens, front monitor diode, sensor lens, anamorphic lens, intermediate lens, photo detector and the like. The OPU 100 includes the optical system parts.

  In addition, as an electrical system component mounted on, for example, the board 110B of the housing 110, for example, an LDD, a printed board, a storage device (ROM: read-only memory), a suspension wire, a coil, an actuator, a flexible printed circuit body, Examples thereof include a beam expander unit including a connector, a laser driver, a laser diode, a liquid crystal correction element, and a collimator lens, a front monitor diode, and a photodetector. The OPU 100 includes the electric system parts.

  Further, as a drive system component mounted on, for example, the substrate 110B of the housing 110, for example, a beam expander unit including a suspension wire, a coil, a magnet, a yoke, an actuator, an objective lens, a lens holder, a collimator lens, and the like. Can be mentioned. The OPU 100 includes the drive system parts.

  Various parts such as various optical system parts, electrical system parts, and drive system parts constituting the OPU 100 are mounted on the housing 110. The housing 110 includes a housing body 115 on which various parts such as various optical system parts, electrical system parts, and drive system parts are provided, and a first support 91 that protrudes from the housing body 115 and serves as a first shaft member. A pair of main shaft bearings 111A and 111B that are movably matched with each other, and a second shaft member that protrudes from the housing body 115 toward the opposite side of the main shaft bearings 111A and 111B. The support body 92 and the bearing portion 112 for the countershaft that is movably matched are formed. The main shaft bearing portions 111 </ b> A and 111 </ b> B and the sub shaft bearing portion 112 are integrally formed with the housing body 115. The main shaft bearing portions 111A and 111B, the sub shaft bearing portion 112, and the housing main body 115 are formed as one unit.

  As a focusing detection method of the focused spot of the optical disc M in the OPU 100, for example, a detection method based on a differential astigmatism method and the like can be mentioned. The differential astigmatism method is, for example, a method of detecting the displacement of a focused spot by detecting a point image distortion formed by an optical system having astigmatism. The focusing spot focusing detection method in the OPU 100 is, for example, a detection method based on a differential astigmatism method. As the focusing detection method, for example, other detection methods such as Foucault method and knife edge method may be used in combination.

Examples of the focusing detection method for the focused spot of the optical disc M in the OPU 100 include a detection method based on the astigmatism method. The astigmatism method is, for example, a method of detecting the displacement of a focused spot by detecting a point image distortion formed by an optical system having astigmatism. As a focusing detection method, for example, a detection method based on a differential astigmatism method and the like can be cited. The differential astigmatism method is, for example, a method of generating a focus error signal by subtracting a focus error signal generated at a sub spot multiplied by a predetermined coefficient from a focus error signal generated at a main spot, Push-pull leakage is minimized. The focusing spot focusing detection method in the OPU 100 is, for example, a detection method based on a differential astigmatism method. As the focusing detection method, for example, other detection methods such as Foucault method and knife edge method may be used or used together. Depending on the type of each optical disc M, each focusing detection method such as a differential astigmatism method is automatically selected as appropriate.

  Moreover, as a tracking detection method of the condensing spot of the optical disk M in the OPU 100, for example, a detection method based on a differential push-pull (DPP) method and the like can be cited. The differential push-pull method is, for example, a method for detecting the displacement of a focused spot by using a main beam for reading and writing data and two sub beams for detecting a positional deviation correction signal. The tracking detection method of the focused spot in the OPU 100 is, for example, a detection method based on a differential push-pull method. As the tracking detection method, for example, other detection methods such as a phase difference method and a heterodyne detection method may be used in combination.

  Moreover, as a tracking detection method of the condensing spot of the optical disk M in the OPU 100, for example, a detection method based on a differential push-pull (DPP) method and the like can be cited. The differential push-pull method is, for example, a method for detecting the displacement of a focused spot by using a main beam for reading and writing data and two sub beams for detecting a positional deviation correction signal. Further, examples of the tracking detection method include a detection method based on a DPD (Differential Phase Detection) method including a phase difference method and the like. More specifically, as a tracking detection method, for example, a phase difference method based on a phase difference signal detected by a quadrant photodetector is cited. As the tracking detection method of the focused spot in the OPU 100, for example, a detection method based on a DPP method, a DPD method, a phase difference method, a heterodyne detection method, or the like is used or used in combination. Also, depending on the type of each optical disc M, each tracking detection method such as a phase difference method is automatically selected as appropriate. As the tracking detection method, another detection method such as a three beam method may be used.

  As shown in FIGS. 1 to 5, the mounting structure of the optical element 10 includes an optical element 10, a conductive member 20 equipped with the optical element 10, a mounting member 110 equipped with the optical element 10 and the conductive member 20, It is configured with. The mounting member 110 includes the conducting member 20, and the conducting member 20 includes the optical element 10 on the mounting member 110.

  Further, the optical element 10 is attached to the conducting member 20.

  Further, the mounting structure of the optical element 10 is further provided with a fixing member 30 (FIG. 7) used when the optical element 10 is mounted. The optical element 10 is fixed to the mounting member 110 by the fixing member 30.

  A light receiving element 10 is used as the optical element 10. Further, a flexible substrate 20 is used as the conductive member 20. A housing 110 is used as the mounting member 110. A cover 30 is used as the fixing member 30.

  The optical element 10 is formed in a substantially rectangular plate shape that can be irradiated with light when viewed from the side. The contact force generating portion 29 of the conducting member 20 is formed in a substantially V shape when viewed from the side.

  The attachment member 110 is formed using resin and / or metal. The conducting member 20 is formed using, for example, a flexible conductor or a flexible insulating covering material.

  When the optical element 10 is mounted on the mounting member 110, the optical element 10 is mounted on the mounting member 110 by the conducting member 20 mounted on the mounting member 110.

  Since the conducting member 20 is provided in the mounting member 110, for example, when the mounting position of the optical element 10 mounted on the mounting member 110 together with the conducting member 20 is adjusted, the conducting member 20 is inadvertently shifted, and accordingly. Thus, for example, it is avoided that the position adjustment of the optical element 10 is performed inaccurately. Therefore, the optical element 10 is easily provided on the mounting member 110.

  The conductive member 20 is a conductive member 20 used when the optical element 10 is mounted on the mounting member 110. The conducting member main body 21 is provided with a locking portion 28 that enables the conducting member main body 21 to be mounted on the mounting member 110.

  Further, the locking portion 28 is bent in the vicinity of the end portion 22 of the conducting member main body portion 21.

  Further, the locking portion 28 has an inclined portion 26 that allows the mounting member 110 to be equipped with the end 22 of the conducting member main body 21.

  In addition, the conducting member main body 21 is provided with a contact force generating portion 29 that generates a restoring elastic force with respect to the mounting member 110.

  In addition, a contact force generating portion 29 is folded back with respect to the conductive member main body portion 21.

  In the mounting structure of the optical element 10, the conducting member 20 having the above configuration is used as the conducting member 20.

  When the optical element 10 is mounted on the mounting member 110, the optical element 10 is mounted on the mounting member 110 by the conducting member 20 mounted on the mounting member 110.

  In addition, since the conducting member main body 21 is provided with the locking portion 28 that enables the conducting member main body 21 to be mounted on the mounting member 110, for example, the mounting of the optical element 10 equipped on the mounting member 110 together with the conducting member 20. When the position is adjusted, it is avoided that the conducting member 20 is inadvertently shifted, and accordingly, for example, the position adjustment of the optical element 10 is performed incorrectly. Therefore, the optical element 10 is easily provided on the mounting member 110.

  Further, the elastic holding portion 28 is provided in the vicinity of the end portion 22 of the conductive member main body portion 21 of the conductive member 20, thereby facilitating attachment work when the conductive member 20 including the optical element 10 is attached to the attachment member 110. Done. Along with this, for example, the stability and reliability of the initial performance in the mounting structure of the optical element 10 are improved.

  In consideration of attachment and detachment of the conducting member 20 and / or the light receiving element 10 with respect to the mounting member 110, an inclination angle is set on the engaging portion 28 of the end 22 of the FPC main body 21 constituting the conducting member 20. The adjustable inclined portion 26 is formed so that the conducting member 20 can be easily attached to the attachment member 110 in a detachable manner.

  Further, by forming the inclined portion 26 in the engaging portion 28 of the end portion 22 of the FPC main body portion 21 constituting the conductive member 20, the engaging portion of the mounting member 110 is attached when the conductive member 20 is attached to the mounting member 110. Since the engaging portion 28 of the FPC 20 is engaged with 128, the effect of preventing the displacement of the conducting member 20 with respect to the mounting member 110 is also expected.

  Further, since the optical element 10 is fixed to the mounting member 110 by the fixing member 30, for example, the optical element 10 is fixed to the mounting member 110 without using a joining member. Therefore, it is possible to configure the pickup apparatus 100 that can keep the price low.

  The pickup device 100 has a mounting structure for the optical element 10.

  If the mounting structure of the optical element 10 is configured, the optical element 10 is easily provided on the mounting member 110 by the conducting member 20. Therefore, it is possible to configure the pickup apparatus 100 that can keep the price low.

  The OPU 100 having the mounting structure of the optical element 10 is compared with the optical element 10 irradiated with the laser beam and the optical element 10 in detail, including the conductive member, the mounting method of the optical element, and the assembly method of the pickup device. The conducting member 20 provided with the optical element 10 at the end 22 used when the conducting member engaging portion 128 of the mounting member 110 is equipped while being aligned with high accuracy and accuracy, and the optical element 10 and the conducting member 20. And an attachment member 110 equipped with the above.

  Further, the OPU 100 having the mounting structure of the optical element 10 is equipped with the engaging portion 28 provided at the end portion 22 of the conducting member 20 and the engaging portion 28 of the end portion 22 of the conducting member 20 being inserted. And a conducting member engaging portion 128 of the mounting member 110 having the accommodating portion 129.

  The optical element 10 is formed as, for example, a light receiving element 10 having an approximately rectangular plate shape, for example, FMD, irradiated with a plurality of laser beams. Further, the FPC 20 is used as the conductive member 20. A housing 110 is used as the mounting member 110. A protective cover 30 is used as the fixing member 30. Further, an FPC holding portion 128 is used as the conducting member engaging portion 128. Further, as the accommodating portion 129 constituting the engaging member engaging portion 128, for example, a substantially rectangular box-like accommodating chamber 129 having a substantially G shape in side view, which constitutes the FPC holding portion 128, is used.

  An elastic holding portion 28 and a restoring contact force generating portion 29 of the FPC 20 are detachably provided and engaged with the accommodation chamber 129 constituting the FPC holding portion 128 of the housing 110, and the FPC holding portion of the housing 110 is also engaged. When the light receiving element 10 is mounted on the substrate portion 110B in the vicinity of the storage chamber 129 that constitutes 128, the FPC 20 for the FPC of the housing 110 is restored by the restoring elastic force generated in the deflectable restoring force generating portion 29 of the FPC 20. In the accommodation chamber 129 constituting the holding portion 128, the elastic holding portion 28 of the FPC 20 and the recoverable contact force generating portion 29 are provided in an expanded state, for example. At this time, the light receiving element 10 is elastically held easily and accurately with the mounting position being adjustable substantially along the front-rear direction DBF and / or the vertical direction DUD and / or the left-right direction DRL and / or the rotational direction. The housing 110 is provided.

  The light receiving element 10 is attached to the end 22 of the FPC 20.

Further, in the vicinity of the end portion 22 of the FPC 20, the flexible substantially flat plate-like FPC 20 is bent at a substantially right angle to form a bent portion 23 and a vertical portion 24 on which the light receiving element 10 is equipped is formed. In addition, the FPC 20 is folded at an acute angle to form a folded bent portion 25, a movable inclined portion 26 having the folded bent portion 25 as a substantially central axis is formed, and the movable inclined portion 26 is a tip portion 27. An elastic holding portion 28 and a restoring contact force generating portion 29 are formed in the vicinity of the end portion 22 of the FPC 20. When the FPC 20 is viewed from the side,
The length of the vertical portion 24 of the end portion 22 of the FPC 20 and the length of the inclined portion 26 are substantially the same.

  Further, the FPC holding portion 128 of the housing 110 located in the vicinity of the light receiving element 10 is formed, for example, in a substantially G shape in side view. More specifically, the FPC holding portion 128 of the housing 110 includes a substrate portion 110A constituting the housing 110, a first side plate portion 121 erected substantially perpendicular to the substrate portion 110A, and the first side plate portion 121. The second side plate portion 122 extending substantially horizontally from the first side plate portion 121 to the substrate portion 110A and the second side plate portion 122 substantially orthogonal to the second side plate portion 122 from the second side plate portion 122 to the substrate portion 110A. A third side plate portion 123 extending substantially orthogonally to the substrate portion and a fourth side plate portion 124 erected substantially perpendicular to the substrate portion 110A are provided. Further, a corner portion 125 is formed at a portion where the substrate portion 110A and the fourth side plate portion 124 are orthogonal to each other, and a corner portion 126 is formed at a portion where the substrate portion 110A and the first side plate portion 121 are orthogonal to each other. A corner portion 127A is formed at a portion where 121 and the second side plate portion 122 are orthogonal to each other, and a corner portion 127B is formed at a portion where the second side plate portion 122 and the third side plate portion 123 are orthogonal to each other. In addition, the substrate portion 110B constituting the accommodation chamber 129 of the FPC holding portion 128 of the housing 110 is thinner than the substrate portion 110A constituting the main portion of the housing 110.

  An elastic holding portion 28 and a restoring contact force generating portion 29 of the FPC 20 are detachably provided and engaged with the accommodation chamber 129 constituting the FPC holding portion 128 of the housing 110, and the FPC holding portion of the housing 110 is also engaged. When the light receiving element 10 is mounted on the substrate portion 110B in the vicinity of the storage chamber 129 constituting 128, the restoring elastic force generated in the folded bent portion 25 of the deflectable restoring force generating portion 29 of the FPC 20, The folded portion 25 of the FPC 20 is brought into contact with the corner portion 125 of the storage chamber 129, and the front end portion 27 of the FPC 20 is brought into contact with the corner portion 127 </ b> A of the storage chamber 129. At this time, the force generated at the folded bent portion 25 of the FPC 20 and the force generated at the front end portion 27 of the FPC 20 are balanced, and the light receiving element 10 is mounted while being aligned on the substrate portion 110B.

  Further, when the elastic holding portion 28 and the restoring contact force generating portion 29 of the FPC 20 are detachably provided in the accommodation chamber 129 constituting the FPC holding portion 128 of the housing 110, for example, the front end portion of the FPC 20 27 extends over the third side plate portion 123, for example, and the tip portion 27 of the FPC 20 is a groove formed by forming the first side plate portion 121, the second side plate portion 122, and the third side plate portion 123. Enter 127C. Due to the third side plate portion 123, the groove 127C, etc., the distal end portion 27 constituting the elastic holding portion 28 and the restoring contact force generating portion 29 of the FPC 20 is not prepared from the storage chamber 129 constituting the FPC holding portion 128 of the housing 110. This is avoided.

  In addition, the OPU 100 having the light receiving element 10 mounting structure further includes a protective cover 30 used when the light receiving element 10 is mounted on the housing 110. The light receiving element 10 is positioned and fixed to the housing 110 by using the fastener 35 such as the screw 35 (FIG. 7) and the like and the protective cover 30 is provided on the housing 110.

  The light receiving element 10 is formed in a substantially rectangular plate shape in side view having a transparent or translucent member that can be irradiated with laser light. Further, in order to equip the light receiving element 10 in the vicinity of the FPC holding portion 128 of the housing 110 with relative ease and accuracy, a contact force generated by the locking portion 28 provided in the vicinity of the end portion 22 of the FPC main body portion 21 of the FPC 20 is generated. The part 29 is formed in a substantially V shape in a side view.

The housing 110 and the FPC holding portion 128 of the housing 110 are formed using, for example, a synthetic resin and / or a lightweight metal. Moreover, FPC20 provided with the substantially V-shaped latching | locking part 28 in the side view, the recoverable contact force generation | occurrence | production part 29, and the FPC main-body part 21 is aromatic heat-resistant, such as metal foil, such as copper foil, and fully aromatic PI, for example. The synthetic resin is used. More specifically, the FPC 20 is excellent in heat resistance when soldering or the like is performed. For example, the FPC 20 has a plurality of insulating sheets made of aromatic heat-resistant synthetic resin such as wholly aromatic polyimide (PI) resin. The circuit conductor is printed, and a metal foil such as a copper foil is provided in parallel on the insulating sheet, and a transparent or translucent protective layer is provided thereon. The light receiving element 10 is formed using, for example, metal, resin, glass, or the like.

  The housing 110 that constitutes the OPU 100 and has the FPC holding portion 128 is excellent in electrical characteristics such as mechanical characteristics, sliding characteristics, dimensional stability, heat resistance, injection moldability, and insulation characteristics, and further, iron materials, etc. Formed by using a heat-resistant synthetic resin composition based on a polyarylene sulfide (PAS) resin such as a polyphenylene sulfide (PPS) resin that can be reduced in weight. Is done. For example, the resin material has a smaller specific gravity than iron and is suitable for weight reduction.

Examples of the composition based on PPS include DIC (DIC, former name: Dainippon Ink and Chemicals): DIC (registered trademark). As a specific PPS-based composition, for example, a non-reinforced linear PPS manufactured by DIC: “DIC / PPS”
"FZ-2100", made by DIC, which is a linear PPS reinforced with 30% glass fiber: "DIC PPS FZ-2130", made by DIC, which is a cross-linked PPS reinforced with 40% glass fiber: "DIC PPS FZ-1140-D9 "etc. are mentioned.

  A molded body formed of a linear PPS (linear PPS) composition has, for example, large elongation and good toughness. On the other hand, the molded body formed of the crosslinked PPS composition has a higher elastic modulus than the molded body formed of, for example, a linear PPS composition. In addition, the molded body formed from the semi-crosslinked PPS composition includes, for example, both the characteristics of the molded body formed from the linear PPS composition and the characteristics of the molded body formed from the crosslinked PPS composition. It also has the characteristics of

  Alternatively, the housing 110 constituting the OPU 100 is made of, for example, a metal such as a non-ferrous metal or a die-cast alloy containing at least one element selected from the group consisting of aluminum (Al), magnesium (Mg), and zinc (Zn). Used to form. Aluminum, magnesium, and zinc are excellent in corrosion resistance and are non-ferrous metals having a specific gravity smaller than that of iron. For example, the housing 110 is formed using a non-ferrous metal material such as an aluminum alloy containing aluminum as a main component.

  The FPC 20 is configured as an FPC 20 that is used when the light receiving element 10 is mounted in the housing chamber 129 that constitutes the FPC holding portion 128 of the housing 110 while being accurately and easily aligned. The end portion 22 of the FPC main body 21 constituting the FPC 20 is provided with an engaging portion 28 that allows the end portion 22 of the FPC 20 to be mounted while aligning the FPC holding portion 128 of the housing 110 as a temporary stop, for example. It has been.

  Further, the FPC main body portion 21 of the FPC 20 is formed in a substantially flexible plate shape in a side view. Further, the locking portion 28 of the FPC 20 is formed as an elastic holding portion 28 which is formed in the vicinity of the end portion 22 of the FPC main body portion 21 so as to be bent in a substantially V shape in a side view.

  In addition, the locking portion 28 of the FPC 20 has an elastic slope portion 26 that allows the end portion 22 of the FPC main body portion 21 of the FPC 20 to be easily detachably mounted on the FPC holding portion 128 of the housing 110, for example. It is formed as a holding part 28.

  Further, a restoring contact force generating portion 29 having a substantially V shape in a side view for generating a restoring elastic force with respect to the FPC holding portion 128 of the housing 110 is provided at the end portion 22 of the FPC main body portion 21. ing.

  For example, the substantially flat plate-like FPC material constituting the FPC 20 is folded back and formed in a substantially inverted V shape in the side view at the folded-back bending portion 25, so that the recoverable contact force generating portion 29 having a substantially V shape in the side view is movable. The inclined portion 26 extends substantially along the direction away from the mounting portion 24 of the light receiving element 10, for example. Further, when the restoring contact force generating portion 29 of the FPC 20 including the FPC main body portion 21 and the restoring contact force generating portion 29 is in a natural state, the folded bent portion 25 tilted at an acute angle of the recovering contact force generating portion 29. The movable inclined portion 26 is extended to the distal end portion 27 while being inclined with respect to the FPC main body portion 21 and the mounting portion 24 of the light receiving element 10. A restoring contact force generating portion 29 having a substantially V shape in a side view with respect to the FPC main body portion 21 is folded back, and an end portion 22 of the FPC 20 is formed in a V shape in a side view, for example. The FPC main body portion 21 is in contact with the light receiving element 10, and the folded bent portion 25 inclined at an acute angle of the recoverable contact force generating portion 29 is brought into contact and locked in the storage chamber 129 constituting the FPC holding portion 128 of the housing 110. The

  When the position of the light receiving element 10 is adjusted in a state where the restoring elastic force is generated in the restoring contact force generating part 29 in the accommodation chamber 129 constituting the FPC holding part 128, for example, the displacement of the light receiving element 10 The load change of the restoring contact force generating portion 29 with respect to is slightly absorbed.

  In the mounting structure of the light receiving element 10, the FPC 20 having the above-described form is used as the FPC 20.

  The OPU 100 has a mounting structure for the light receiving element 10.

  If the mounting structure of the light receiving element 10 is configured, the FPC 20 allows the light receiving element 10 to be easily and relatively adjusted in position on the FPC holding portion 128 of the housing 110. Therefore, the OPU 100 that can keep the price low can be configured.

  When the light receiving element 10 is mounted while being aligned in the accommodation chamber 129 that constitutes the FPC holding portion 128 of the housing 110, the light receiving element 10 is placed in the accommodation chamber 129 that constitutes the FPC holding portion 128 of the housing 110. It is attached along the front-rear direction DBF and / or the up-down direction DUD and / or the left-right direction DRL and / or the rotational direction by the restoring elastic force generated in the deflected restoring contact force generating portion 29 of the FPC 20 mounted on In a state in which the position can be adjusted, the housing 110 is elastically held easily and accurately in the housing chamber 129 constituting the FPC holding portion 128 of the housing 110.

  Further, a locking portion 28 that enables the end portion 22 of the FPC 20 to be mounted while aligning the FPC holding portion 128 of the housing 110 as, for example, temporary fixing, is an end portion 22 of the FPC main body portion 21 constituting the FPC 20. For example, the FPC 20 is detachably engaged with the storage chamber 129 constituting the FPC holding portion 128 of the housing 110, so that the mounting position of the light receiving element 10 mounted on the housing 110 together with the FPC 20 is, for example, the front-rear direction DBF. When the FPC 20 is adjusted substantially along the up-down direction DUD and / or the left-right direction DRL and / or the rotation direction, the FPC 20 is carelessly moved back and forth in the accommodation chamber 129 constituting the FPC holding portion 128 of the housing 110. Direction DBF and / or up and down direction DUD and / or left and right direction DRL and / or It is shifted substantially along the rotational direction, occurrence of a problem that the position adjustment of the Accompanying this example the light receiving element 10 is incorrectly made as a result are avoided.

Accordingly, the FPC is placed in the storage chamber 129 that constitutes the FPC holder 128 of the housing 110.
20 end portions 22 are provided with high accuracy, and the light receiving element 10 is elastically held with high accuracy in the vicinity of the storage chamber 129 constituting the FPC holding portion 128 of the housing 110.

  In addition, an elastic holding portion 28 that is bent in a substantially V shape in a side view is provided in the vicinity of the end portion 22 of the FPC main body portion 21 of the FPC 20, so that the storage chamber 129 that constitutes the FPC holding portion 128 of the housing 110. The attachment work when the end 22 of the FPC 20 including the light receiving element 10 is attached is easily performed. Accordingly, for example, in the mounting structure of the light receiving element 10, the stability of the initial performance is improved, and the light receiving element is also used in reliability evaluation in a thermal shock test [H / S: heat shock] or the like. The positional deviation of 10 is improved.

  In addition, regarding the shape of the elastic holding portion 28 of the FPC 20, the FPC 20 and / or the light receiving element 10 of the housing 110 is attached to and removed from the FPC 20 and the light receiving element 10 at the time of repair. The movable inclined portion 26 is formed on the elastic holding portion 28 of the end portion 22 so that the elastic holding portion 28 is substantially V-shaped, and the FPC 20 can be easily attached to and detached from the FPC holding portion 128 of the housing 110, for example. It can be installed.

  Moreover, the movable holding part 26 is formed in the elastic holding part 28 of the end part 22 of the FPC main body part 21 constituting the FPC 20, and the FPC main body part 21 constituting the FPC 20 is formed, for example, by the elastic holding part 28 having a substantially V shape. When the FPC 20 is attached to the FPC holding portion 128 of the housing 110, the elastic holding portion 28 of the FPC 20 is engaged with the FPC holding portion 128 of the housing 110. The effect of preventing the position shift of the FPC 20 with respect to the FPC holder 128 is also expected.

  Further, since the light receiving element 10 is finally fixed to the housing 110 by the protective cover 30 using the fastener 35 such as the screw 35, the light receiving element 10 is fixed to the housing 110 without using an adhesive, for example. Is done. Therefore, the OPU 100 that can keep the price low can be configured.

  Next, a representative optical member of the OPU 100 will be described. As an optical member 130 constituting the OPU 100, a substantially convex shape that condenses laser light (not shown) on the signal surface portion Ma of the medium M such as the optical disk M. OBL130 is used. Thus, for example, the OPU 100 including one OBL 130 is configured. More specifically, for example, a numerical aperture corresponding to a first laser wavelength light having a wavelength of about 765 to 840 nm, a second laser wavelength light having a wavelength of about 630 to 685 nm, and a third laser wavelength light having a wavelength of about 340 to 450 nm. An OPU 100 having an OBL 130 of approximately 0.85 is configured. The numerical aperture means, for example, the product of the sine of the angle at which the effective radius (incident pupil radius) of the objective lens is viewed from an object point in an optical instrument and the refractive index of the medium on the incident side. The numerical aperture is abbreviated as “NA”. The numerical aperture is used to express the performance of the objective lens.

  The laser beam is focused on the signal layer Ma of the optical disk M by moving the OBL 130 of the OPU 100 up and down / left and right using the actuator 190 of the OPU 100. More specifically, when irradiating and forming a high-precision laser spot on the signal layer Ma of the optical disc M, the OBL 130 mounted on the lens holder 140 is moved by the actuator 190 of the OPU 100 to the focusing direction D1, the tracking direction D2, and as necessary. Accordingly, it is moved substantially along the tilt direction D4 and the like. An actuator means a driving device that converts energy into translational motion, rotational motion, and the like, for example. The OPU 100 performs focusing adjustment, tracking adjustment, and tilt adjustment as necessary when the laser beam is focused by the OBL 130. In addition, the focusing adjustment, the tracking adjustment, and the tilt adjustment are performed substantially simultaneously, for example.

  Focus means, for example, focus or focus. Focusing means focusing or focusing. The track means a signal trajectory on the optical disc M, for example. The tracking means that a minute signal portion provided on the signal surface portion Ma of the optical disk M is tracked and observed using light, and the position of the orbit drawn in a substantially spiral shape is determined. The tilt in the optical disk device or the optical pickup device means an angular deviation between the disk surface and the optical axis of the objective lens.

  For example, when the focus servo of the lens holder assembly 193 including the lens holder 140 to which the OBL 130 is mounted is performed on the optical disc M, the lens holder assembly 193 including the lens holder 140 to which the OBL 130 is mounted is It is moved along the vertical direction D1. Further, when the tracking servo of the lens holder assembly 193 including the lens holder 140 to which the OBL 130 is mounted is performed on the optical disc M, the lens holder assembly 193 including the lens holder 140 to which the OBL 130 is mounted is For example, the optical disk M is moved along the left-right direction D2 with respect to the line direction of a substantially spiral track (not shown). The servo or servo mechanism means a mechanism that measures the state of the object to be controlled, compares the measured value with a reference value, and automatically performs correction control. When the laser beam focused by the OBL 130 is focused on the signal layer Ma of the optical disc M, the lens / holder assembly 193 including the lens holder 140 equipped with the OBL 130 is driven vertically and horizontally by the actuator 190. .

  Further, when the OPU 100 moves substantially along the longitudinal direction D2 of the substantially round bar-shaped supports 91 and 92, a substantially round hole-shaped first bearing portion 111A, a substantially round bar-shaped first support 91, Is in sliding contact. Further, when the OPU 100 moves substantially along the longitudinal direction D2 of the substantially round bar-shaped supports 91, 92, the substantially round hole-shaped second bearing portion 111B, and the substantially round bar-shaped first support 91, , Is in sliding contact. Further, when the OPU 100 moves substantially along the longitudinal direction D2 of the substantially round bar-like supports 91 and 92, a third bearing part 112 having a substantially U-shaped sliding bearing structure in a sideways manner, The second support 92 is in sliding contact. The longitudinal direction D2 of the substantially round bar-shaped supports 91 and 92 is the moving direction D2 of the OPU 100 applied from the inner peripheral side of the optical disc M to the outer peripheral side and / or the movement of the OPU 100 applied from the outer peripheral side of the optical disc M to the inner peripheral side. The direction is D2.

  The supports 91 and 92 are formed as, for example, slide shafts 91 and 92 that can be slidably brought into contact with the bearing portions 111A, 111B, and 112 of the housing 110 of the OPU 100. The supports 91 and 92 are excellent in corrosion resistance. For example, “Hot Finished Stainless Steel Bar” defined based on “JIS G 4304”, “Cold Formed Stainless Steel” defined based on “JIS G 4318”. A “bar” or the like is used. The bearing portions 111A, 111B, and 112 are formed as, for example, sliding portions 111A, 111B, and 112 that can be slidably contacted with the slide shafts 91 and 92.

  The OPU 100 has a substantially three-point structure that is stable on the pair of slide shafts 91 and 92 by the first sliding portion 111A, the second sliding portion 111B, and the third sliding portion 112 of the housing 110. It is supported movably. The OPU 100 is movable on the pair of slide shafts 91 and 92 by three main points of the first sliding portion 111A, the second sliding portion 111B, and the third sliding portion 112 of the housing 110. Therefore, the friction is reduced as compared with, for example, an OPU (not shown) having a four-point support structure.

Further, since the third sliding portion 112 constitutes an open sideways substantially U-shaped sliding bearing structure, for example, the assembling operation of the OPU 100 to the slide shaft 92 serving as the auxiliary shaft is performed. Is easily done. Further, since the third sliding portion 112 is configured to constitute an open sideways substantially U-shaped sliding bearing structure, for example, with respect to the first slide shaft 91 serving as the main shaft, the sub shaft A slight error such as the degree of parallelism of the second slide shaft 92 is absorbed by the third sliding portion 112 of the opened substantially U-shaped sliding bearing structure in a sideways manner.

  The OPU 100 is configured to include other parts other than the above-described various parts, but detailed description of other parts is omitted here.

  The pickup apparatus main body assembly 7 constituting the traverse mechanism 5 includes a substantially flat chassis 80, a pair of long round rod-like slide shafts 91 and 92 attached to the substantially flat chassis 80, and a pair of long And an OPU 100 that is movably mounted on a round rod-shaped slide shaft 91, 92. In addition, the OPU 100 includes a pair of OBLs 130 that irradiate the signal surface Ma of the disk M with light such as laser light in focus.

  A substantially flat chassis 80 constituting the optical pickup apparatus main body assembly 7 is provided with a substantially flat circuit board constituting the rotating motor main body assembly 50 by using a stopper, an adhesive, or the like. In addition, since the pair of substantially round bar-shaped slide shafts 91 and 92 are provided in the substantially flat chassis 80, the traverse mechanism 5 that is highly accurate and is less likely to be displaced, the optical disc apparatus 1 including the traverse mechanism 5, and the like. Is configured.

  The optical disc apparatus 1 including the OPU 100 and the traverse mechanism 5 records data, information, signals, and the like on the various optical discs M, reproduces data, information, signals, and the like on the various optical discs M, and the various optical discs M. For example, it can be used in a recording / reproducing apparatus that erases data, information, signals, and the like. Further, the optical disk apparatus 1 including the OPU 100 and the traverse mechanism 5 can be used for, for example, a reproduction-only apparatus that reproduces data, information, signals, and the like of the various optical disks M.

  The state in which the disk M is mounted in the optical disk apparatus 1 will be described. A tray (not shown) that can be inserted into and removed from the optical disk apparatus body 2 of the optical disk apparatus 1 is used. Is provided with a disk M.

  The optical disk apparatus 1 (FIG. 8) can be equipped with an optical disk M and can be loaded into and unloaded from the optical disk apparatus main body 2 and a clamper (not shown) facing the turntable 73 and the turntable 73. A clamp device that can hold and fix the optical disk M, a drive device 40 that includes the turntable 73 and rotates the optical disk M, an OPU 100 that irradiates the optical disk M with laser light, and a radius of the optical disk M The OPU 100 is configured to include a pair of slide shafts 91 and 92 that movably support the OPU 100 when moving the OPU 100 along the direction D2.

  An optical disk M is accommodated in the optical disk device 1 by using a substantially plate-shaped tray that is made to be able to enter and exit from the substantially rectangular box-shaped casing 3 so-called optical disk device cover 3 constituting the optical disk device 1. A drive device 40 for rotating the optical disk M is housed in the optical disk device cover 3 constituting the optical disk device 1. As the drive device 40, a disk drive device 40 having a substantially round plate-like turntable 73 on which the optical disk M is mounted is used. The OPU 100 that reads the data / information / signal of the optical disc M, records the data / information / signal on the optical disc M, and erases the data / information / signal of the optical disc M constitutes the optical disc constituting the optical disc apparatus 1. It is equipped in the device cover 3. An optical disk apparatus 1 is assembled by attaching an upper cover (not shown) to the lower optical disk apparatus cover 3 equipped with various components.

A clamp device having a turntable 73 and a clamper facing the turntable 73 was used to position the optical disk M having a round hole Mb in the center portion Mc between the turntable 73 and the clamper. It is pinched securely in a state and is detachably fixed.

  The optical disk apparatus 1 is an optical disk apparatus 1 for a notebook PC including an OPU 100 for a notebook personal computer (PC), for example, but may be used as an optical disk apparatus 1 for a desktop PC, for example. Good. Further, the optical disk apparatus 1 is configured to include other parts in addition to the above-mentioned various parts, but detailed description of other parts is omitted here.

  The OPU 100 is mounted on the optical disc apparatus 1 assembled in, for example, a computer, audio / video equipment, game machine, in-vehicle device (none of which is shown). The OPU 100 and the optical disc apparatus including the OPU 100 include, for example, a notebook personal computer PC, a laptop PC, a desktop PC, a computer such as an in-vehicle computer, a game machine such as a computer game machine, a CD player / CD It can be installed in sound and / or video equipment such as a recorder, a DVD player / DVD recorder, a “Blu-ray / Blu-ray Disc” player / “Blu-ray / Blu-ray Disc” recorder ( Neither is shown). The OPU 100 is compatible with a plurality of discs such as “CD” type optical disc, “DVD” type optical disc, “HD DVD” type optical disc, “CBHD” type optical disc, “Blu-ray / Blu-ray Disc” type optical disc, etc. It is possible. Further, the OPU 100 can be adapted to one optical disc having a plurality of signal surface portions. The OPU 100 is, for example, a computer, audio and / or video equipment, game, etc., compatible with various optical disks such as “CD”, “DVD”, “HD DVD”, “CBHD”, “Blu-ray / Blu-ray Disc”. It can be installed in a machine, an in-vehicle machine, etc. (both not shown).

  As mentioned above, although embodiment of this invention was described, embodiment mentioned above is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed / improved without departing from the gist thereof, and equivalents thereof are also included.

  For example, instead of the light receiving element 10 such as FMD, PD, or PDIC, a light emitting element such as LD may be used as the optical element 10.

  In addition, an LD capable of emitting laser light having at least one of the above wavelengths may be configured as the LD. Further, at least three OPUs 100 may be equipped with single-wavelength LDs that can emit laser beams of the respective wavelengths.

  In addition, a plurality of OBLs may be mounted on the lens holder 140 without using one OBL 130. For example, a tangential direction that is perpendicular to a focusing direction D1 that is substantially along the optical axis direction D1 of the OBL 130 and a tracking direction D2 that is substantially along the one radial direction D2 of the optical disk M. A pair of OBLs may be arranged in parallel on the lens holder 140 substantially along the so-called tangential direction D3. Further, for example, a pair of OBLs may be arranged in parallel in the lens holder 140 along the tracking direction D2 that is substantially along the one radial direction D2 of the optical disk M.

  The OPU 100 includes an optical system corresponding to the first, second, and third wavelength laser beams, and the lens holder 140 includes an optical system that corresponds to the first, second, and third wavelength laser beams. Correspondingly, one OBL 130 corresponding to three types of laser light, that is, laser light in the infrared wavelength band, laser light in the red wavelength band, and laser light in the blue-violet wavelength band may be held.

  Further, for example, instead of the light receiving portion having a substantially rectangular shape in plan view, which is divided into four substantially equally divided into four segments in plan view, two segments having substantially rectangular shapes in plan view are provided. A light receiving portion (both not shown) having a substantially rectangular shape in plan view may be formed in the photodetector. In addition, for example, instead of the main light receiving portion having a substantially rectangular shape in plan view and the sub light receiving portion having a substantially rectangular shape in plan view, a polygonal shape such as a main light receiving portion having a substantially octagonal shape in plan view and a sub light receiving portion having a substantially octagonal shape in plan view. The light receiving unit may be configured as a photodetector (both not shown). For example, instead of the four-divided diffraction grating, a plurality of divided diffraction gratings such as a two-divided diffraction grating or a three-divided diffraction grating (not shown) may be used.

10 Light receiving element (optical element)
20 FPC (conductive member)
21 FPC body (conducting member body)
22 End 26 Movable inclined part (inclined part)
28 Elastic holding part (locking part)
29 Contact force generator 30 Cover (fixing member)
100 OPU (Pickup device)
110 Housing (Mounting member)

Claims (11)

An optical element mounting structure,
An optical element;
A conducting member equipped with the optical element;
A mounting member equipped with the optical element and the conducting member;
With
The attachment member is provided with the conducting member, and the attachment member is provided with the optical element by the conducting member. The optical element mounting structure according to claim 1,
The optical element is mounted on the conducting member. An optical element mounting structure according to claim 1 or 2,
A fixing member used when the optical element is equipped;
The optical element is fixed to the mounting member by the fixing member. An optical element mounting structure according to claim 3,
A light receiving element is used as the optical element,
A flexible substrate is used as the conducting member,
A housing is used as the mounting member,
A cover is used as the fixing member. A conducting member used when mounting the optical element on the mounting member;
The conductive member main body is provided with a locking portion that allows the conductive member main body to be mounted on the mounting member. The conductive member according to claim 5,
The locking portion is formed by bending near the end of the conducting member main body. It is the conduction member according to claim 5 or 6,
The locking portion has an inclined portion that allows the end portion of the conducting member main body portion to be mounted on the mounting member. It is a conduction member given in any 1 paragraph of Claims 5-7,
An abutting force generating portion that generates a restoring elastic force with respect to the mounting member is provided at an end of the conducting member main body. The conduction member according to claim 8,
The contact force generating portion is formed to be folded with respect to the conductive member main body. The optical element mounting structure according to any one of claims 1 to 4,
The conducting member according to any one of claims 5 to 9 is used as the conducting member. A pickup device,
It has the attachment structure of the optical element of any one of Claims 1-4 or 10. It is characterized by the above-mentioned.

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