JP2009238340A - Optical head device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical head device which allows a biasing member for fixing an optical element to a base to be fixed to the base by its own biasing force. <P>SOLUTION: The V-shaped part 64 of the spring 63 of the optical head device is provided with an abutting part 66a whose end abuts on a device frame 11 on the inferior angle 64a side of a V shape on a V-shaped branch 65a, an abutting part 66b whose intersection part between V-shaped branches 65a and 65c on the superior angle 64b side of a V shape on the V-shaped branch 65a abuts on the device frame 11, and an abutting part 66c whose end on the inferior angle 64a side of the V shape on the V-shaped branch 65c abuts on a lens holder 62. The abutting parts 66a, 66b and 66c respectively abut on the device frame 11, the device frame 11, and the lens holder 62 to make the inferior angle 64a larger than that during no load period, and the lens holder 62 is fixed in its biased state to the device frame 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical head device used for reproducing or recording an optical recording disk such as a CD (Compact Disk) or a DVD (Digital Versatile Disk).

As a conventional optical head device, a sensor lens that generates astigmatism with respect to return light from an optical recording medium, a lens holder that holds the sensor lens, a base to which the lens holder is bonded and fixed, and a lens holder that is a base There is known an optical head device having a leaf spring that temporarily fixes a lens holder to a base before being bonded and fixed to (see, for example, Patent Document 1).
JP 2004-206760 A

  However, the conventional optical head device has a problem that the leaf spring is fixed to the base with screws, and the number of parts is large.

  The present invention has been made to solve the conventional problems, and the biasing member that fixes the optical element to the base without using a screw is the biasing force of the biasing member itself when fixing the optical member to the base. An object of the present invention is to provide an optical head device that can be fixed to a base.

  An optical head device of the present invention includes a laser light source, a light receiving element, an optical system for converging laser light emitted from the laser light source to an optical recording medium and guiding return light from the optical recording medium to the light receiving element. An optical head device having a base on which the laser light source, the light receiving element, and the optical system are mounted, and an optical element holder having an attachment surface in contact with the base and holding the optical element of the optical system; A biasing member that biases the optical element holder and presses and fixes the mounting surface of the optical element holder against the base and is also fixed to the base by the biasing force. The member is formed by one and the other branches extending from one intersecting portion to the other intersecting portion, and the biasing member is an inferior angle of the intersecting portion on the one branch A first base abutting portion whose end abuts against the base, a second base abutting portion whose apex is in contact with the base on the dominant angle side of the intersection, A holder abutting portion whose end is in contact with the optical element holder on the minor angle side on the other branch, the first base abutting portion, the second base abutting portion, The optical element holder is fixed to the base in an urging state so that the inferior angle becomes larger than that when no load is caused by the holder contact portion contacting the base, the base, and the optical element holder, respectively. It is characterized by.

  With this configuration, when the optical element holder is fixed to the base by the biasing force of the biasing member, the biasing member is fixed to the base by the restoring force generated in the biasing member. The biasing member that fixes the optical element to the base can be fixed to the base by the biasing force of the biasing member itself.

  Further, the mounting surface of the optical head device of the present invention includes the two mounting surfaces that are parallel to the optical axis passing through the optical element, and the two mounting surfaces are arranged adjacent to each other and intersect with each other. It is preferable that they are simultaneously pressed against the base by the biasing member.

  With this configuration, the optical head device of the present invention can determine the position of the optical element holder with respect to the base in the direction orthogonal to the optical axis by simultaneously pressing two intersecting mounting surfaces against the base.

  The mounting surface of the optical head device of the present invention includes the two mounting surfaces that are parallel to the optical axis passing through the optical element, the two mounting surfaces being spaced apart from each other, and the two mounting surfaces. It is preferable that the virtual planes including the surfaces intersect with each other and are simultaneously pressed against the base by the biasing member.

  With this configuration, the optical head device of the present invention can determine the position of the optical element holder with respect to the base in the direction orthogonal to the optical axis by simultaneously pressing two intersecting mounting surfaces against the base.

  Further, the biasing member of the optical head device of the present invention is characterized by having an orthogonal direction movement preventing portion that prevents the movement in the direction orthogonal to the optical axis by contacting the base. preferable.

  With this configuration, when the optical element holder is fixed to the base by the urging force of the urging member, the optical head device of the present invention can be applied to the urging member in a direction perpendicular to the optical axis passing through the optical element with respect to the base. It is possible to prevent the urging member from moving due to the restoring force generated.

  Further, the biasing member of the optical head device of the present invention is characterized in that it has a parallel-direction movement preventing portion that prevents the biasing member from moving in a direction parallel to the optical axis by contacting the base. preferable.

  With this configuration, the urging member does not move in a direction parallel to the optical axis of the optical element, so that the optical element holder is fixed to the base by the urging force of the urging member. However, the optical element can be adjusted in a direction parallel to the optical axis.

  According to the present invention, the urging member for fixing the optical element to the base is formed by one and the other branches extending from the intersecting portion to one and the other, and the urging member is on one of the branches. A first base contact portion whose end is in contact with the base, a second base contact portion whose top is in contact with the base, And a holder contact portion whose end is in contact with the optical element holder, the first base contact portion, the second base contact portion, and the holder contact portion. Since the optical element holder is fixed to the base in a biased state so that the minor angle becomes larger than that when there is no load by contacting the base, the base, and the optical element holder, respectively, the optical element is fixed to the base. The biasing member can be fixed to the base by the biasing force of the biasing member itself. That. Therefore, the optical element can be fixed to the base without using a screw, and the number of parts can be reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  First, the configuration of the optical head device according to the present embodiment will be described.

  FIG. 1 is a perspective view of an optical head device 10 according to the present embodiment. FIG. 2 is an exploded perspective view of the optical head device 10. FIG. 3 is a perspective view of the optical head device 10 with some components removed.

  The optical head apparatus 10 shown in FIG. 1 reproduces information on an optical recording disk (not shown) such as a CD disk or a DVD disk by using a laser beam having a wavelength of 650 nm and a laser beam having a wavelength of 780 nm. And a two-wavelength optical head device capable of recording.

  As shown in FIGS. 1 to 3, the optical head device 10 is disposed on the optical recording disk side with respect to the device frame 11 made of metal, which is a base made of a die-cast product such as magnesium or zinc, and the device frame 11. A metal cover 12 attached to the device frame 11 covering various components on the device frame 11, a metal cover 13 attached to the objective lens driving mechanism 40, and an AlGaInP-based semiconductor laser that emits laser light having a wavelength of 650 nm band The laser light source device 21 as a laser light source provided with the laser light source device 21, the laser light source device 22 including an AlGaAs semiconductor laser that emits laser light having a wavelength of 780 nm band, and the laser light source device 21 and the laser light source device 22 Light receiving element for monitoring 23 for receiving laser light and recording on optical recording disk An optical element including a signal detecting light receiving element 24 for receiving the laser light reflected by the laser light source, and an objective lens 31 for converging the laser light emitted by the laser light source device 21 and the laser light source device 22 onto the recording surface of the optical recording disk. A system 30, an objective lens driving mechanism 40 mounted on the apparatus frame 11 for servo-controlling the position of the objective lens 31, a laser light source device 21, a laser light source device 22, a monitor light receiving element 23, and a signal detecting light receiving element. 24 and a flexible circuit board 50 electrically connected to the objective lens driving mechanism 40 and the like.

  The apparatus frame 11 holds a bearing 11a and a bearing 11b engaged with a main shaft and a sub shaft (not shown) for driving an optical recording disk, a positioning projection 11c for the metal cover 12, and a metal cover 12. And a claw 11d.

  The metal cover 12 includes a hole 12 a that fits into the protrusion 11 c of the device frame 11 and a groove 12 b that engages with the claw 11 d of the device frame 11.

  The metal cover 13 has a hole 13 a through which the laser light emitted from the objective lens 31 passes and covers the objective lens driving mechanism 40.

  The laser light source device 21, the laser light source device 22, and the monitor light receiving element 23 are mounted on the device frame 11 and covered with a metal cover 12.

  The optical system 30 transmits the laser light emitted from the laser light source device 21 and reflects the laser light emitted from the laser light source device 22, and an optical path combining polarizing prism 32, and between the laser light source device 21 and the polarizing prism 32. , A diffractive element 33 in which a half-wave plate is integrally formed, a diffractive element 34 and a relay lens 35 disposed between the laser light source device 22 and the polarizing prism 32, a monitor light receiving element 23 and a polarized light A half mirror 36 disposed between the prisms 32 to partially reflect the laser light emitted from the polarizing prism 32 and a phase difference of ¼ wavelength to the laser light emitted from the polarizing prism 32 and reflected by the half mirror 36. A quarter-wave plate 37 for generating a laser beam, and a collimating lens 38 for converting the laser light transmitted through the quarter-wave plate 37 into parallel light, A rising mirror 39 for raising the laser beam made parallel light by the remate lens 38 toward the optical recording disk; and a sensor lens 61 for generating astigmatism with respect to the return light from the optical recording disk. Yes.

  The polarizing prism 32, the diffractive element 33, the diffractive element 34, the relay lens 35, the half mirror 36, the quarter wavelength plate 37, the collimating lens 38, the rising mirror 39, and the sensor lens 61 are mounted on the apparatus frame 11. The polarizing prism 32, the diffraction element 33, the diffraction element 34, the relay lens 35, the half mirror 36, and the quarter wavelength plate 37 are covered with the metal cover 12. The collimating lens 38 and the raising mirror 39 are covered with an objective lens driving mechanism 40.

  The flexible circuit board 50 is electrically connected to an end portion (not shown) electrically connected to the laser light source device 21, an end portion 50 b electrically connected to the laser light source device 22, and the monitor light receiving element 23. An end portion 50c to be connected, an end portion 50d electrically connected to the signal detection light-receiving element 24, and an end portion (not shown) electrically connected to the objective lens driving mechanism 40; It is partially bent and mounted three-dimensionally on the apparatus frame 11 and covered with a metal cover 12.

  FIG. 4 is a cross-sectional view taken along line AA in FIG. 5 and is a view in the vicinity of the sensor lens 61. FIG. 5 is a perspective view of the optical head device 10 as seen from the upper surface side, and is a view in the vicinity of the sensor lens 61.

  As shown in FIGS. 4 and 5, the sensor lens 61 is bonded and fixed to a lens holder 62 as an optical element holder, and is fixed to the apparatus frame 11 via the lens holder 62. The sensor lens 61 does not necessarily have to be bonded and fixed to the lens holder 62, and may be configured by resin molding with the lens holder 62. The lens holder 62 includes two mounting surfaces 62 a and 62 b that are parallel to and orthogonal to the optical axis 61 a passing through the sensor lens 61 and abut against the apparatus frame 11, and a through hole 62 c through which return light passes through the sensor lens 61. And a curved surface 62d that is disposed on the opposite side of the attachment surfaces 62a and 62b with respect to the through hole 62c and extends in a direction parallel to the optical axis 61a that passes through the sensor lens 61. Here, the apparatus frame 11 has holder fixing surfaces 11e and 11f to which the mounting surfaces 62a and 62b of the lens holder 62 are bonded and fixed orthogonally to each other.

  6A, 6B, and 6C are a front view, a bottom view, and a side sectional view of a spring 63 as an urging member, respectively.

  As shown in FIGS. 4 and 6C, the lens holder 62 is urged against the device frame 11 by a spring 63 as an urging member manufactured by bending a metal plate. The spring 63 has a V-shaped V-shaped portion 64 that urges the lens holder 62 in a direction indicated by an arrow 63a in which the lens holder 62 is pressed against the apparatus frame 11 by two mounting surfaces 62a and 62b. The V-shaped portion 64 is on the V-shaped inferior angle 64a side on the one V-shaped branch 65a and has an abutting portion 66a as a first base abutting portion whose end abuts on the apparatus frame 11. An abutment portion 66b as a second base abutment portion on the side of the V-shaped dominant angle 64b on the branch 65a and where the intersecting portion of the V-shaped one branch 65a and the other branch 65c abuts the apparatus frame 11; , A V-shaped minor angle 64 a side of the other V-shaped branch 65 c, and an end portion thereof has a contact portion 66 c as a holder contact portion that contacts the lens holder 62. As shown in FIG. 4, the V-shaped portion 64 has an inferior angle 64a shown in FIG. 6C because the contact portions 66a, 66b, and 66c contact the device frame 11, the device frame 11, and the lens holder 62, respectively. The lens holder 62 is fixed to the apparatus frame 11 in a biased state so as to be larger than that at the time of loading. Here, the apparatus frame 11 protrudes from the contact portion 11g to the contact portion 11h side with the contact portions 11g and 11h contacting the contact portions 66a and 66b of the spring 63, respectively, and moves the branch 65a of the spring 63. And a guide portion 11i for guiding.

  7A and 7B are a perspective view as seen from the front side and a perspective view as seen from the back side of the spring 63, respectively.

  As shown in FIGS. 6 and 7, the branch 65c of the V-shaped portion 64 includes a bent portion 65d disposed on both sides of the tip and bent in a direction opposite to the V-shaped bending direction, and a V-shaped apex 65b. And a notch 65e disposed in the center in the vicinity.

  FIG. 8 is a perspective view seen from the bottom side of the optical head device 10 and is a view in the vicinity of the spring 63. FIG. 9 is a perspective view of the optical head device 10 as viewed from the upper surface side, in which the sensor lens 61 and the spring 63 are omitted.

  As shown in FIGS. 4, 8, and 9, the spring 63 has a hook 67 that is bent from the branch 65 a in a direction opposite to the bending direction of the V-shaped portion 64. The hook 67 serves as an orthogonal direction movement prevention unit that prevents the V-shaped portion 64 from moving in the direction indicated by the arrow 64 c orthogonal to the optical axis 61 a of the sensor lens 61 by contacting the contact portion 11 k of the device frame 11. The movement of the V-shaped portion 64 in the direction indicated by an arrow 64d (see FIG. 5) parallel to the optical axis 61a of the sensor lens 61 is prevented by coming into contact with the apparatus frame 11, thereby preventing the movement in the parallel direction. And a side portion 67b as a portion. Here, the device frame 11 is formed with a through hole 11j. The through hole 11j includes a contact portion 11k that contacts the end 67a of the hook 67 and a contact portion 11l that contacts the side portion 67b of the hook 67. It has in a part of wall part which forms.

  Next, the operation of the optical head device 10 will be described.

  As shown in FIG. 3, the laser light emitted from the laser light source device 21 passes through the polarizing prism 32 and enters the half mirror 36. Part of the laser light incident on the half mirror 36 is transmitted through the half mirror 36 and detected by the monitor light receiving element 23, and used for controlling the amount of laser light emitted from the laser light source device 21. Part of the laser light incident on the half mirror 36 is reflected by the half mirror 36, passes through the quarter wavelength plate 37 and the collimator lens 38, rises up by the rising mirror 39, and passes through the objective lens 31. As a result, the recording surface of the optical recording disk is reached.

  Similarly, the laser light emitted from the laser light source device 22 is reflected by the polarizing prism 32 and enters the half mirror 36. Part of the laser light incident on the half mirror 36 is detected by the monitoring light receiving element 23 through the half mirror 36 and used for controlling the amount of laser light emitted from the laser light source device 22. Part of the laser light incident on the half mirror 36 is reflected by the half mirror 36, passes through the quarter wavelength plate 37 and the collimator lens 38, rises up by the rising mirror 39, and passes through the objective lens 31. As a result, the recording surface of the optical recording disk is reached.

  Furthermore, when reproducing the information recorded on the recording surface of the optical recording disk, the laser light that has reached the recording surface of the optical recording disk is reflected by the recording surface and becomes return light. The return light passes through the objective lens 31, is reflected by the rising mirror 39, passes through the collimator lens 38, the quarter wavelength plate 37, the half mirror 36, and the sensor lens 61, and then receives the signal detection light-receiving element 24. Detected. Here, the return light detected by the signal detection light-receiving element 24 is given astigmatism by passing through the sensor lens 61. Therefore, by forming a four-divided light receiving element in the signal detecting light receiving element 24, focusing correction can be performed from the photoelectric flow rate of these divided light receiving elements.

  Next, an operation for fixing the sensor lens 61 to the apparatus frame 11 will be described.

  First, the signal detection light receiving element 24 is fixed to the apparatus frame 11.

  Next, the lens holder 62 to which the sensor lens 61 is bonded and fixed is disposed so that the mounting surfaces 62 a and 62 b abut on the holder fixing surfaces 11 e and 11 f of the apparatus frame 11.

  Next, the spring 63 is inserted into the installation location in the apparatus frame 11 with the end of the branch 65a as the head. Here, since the spring 63 contacts the guide portion 11i of the apparatus frame 11 at the end of the branch 65a before contacting the lens holder 62, the spring 63 contacts the curved surface 62d of the lens holder 62 by the branch 65c and the minor angle 64a widens. Even if a restoring force is generated by this, it is possible to move to the set place by being guided by the guide portion 11i. The spring 63 moves while being guided by the guide portion 11i when the operator presses the hook 67. However, since the branch 65c has the notch 65e, the spring 67 is easily pressed by the operator. ing.

  When the hook 67 enters the through hole 11j, the spring 63 is prevented from moving in the direction indicated by the arrow 64c due to the contact between the end portion 67a of the hook 67 and the contact portion 11k of the apparatus frame 11. .

  At this time, the spring 63 is in contact with the curved surface 62d of the lens holder 62 at the contact portion 66c of the branch 65c. It is fast. Accordingly, the attachment surfaces 62 a and 62 b of the lens holder 62 are pressed against the holder fixing surfaces 11 e and 11 f of the device frame 11. That is, the lens holder 62 is temporarily fixed to the device frame 11 by the spring 63.

  Further, as described above, the spring 63 is pressed against the contact portions 11g and 11h of the apparatus frame 11 by the contact portions 66a and 66b of the branch 65a by the restoring force generated by the expansion of the minor angle 64a. That is, the spring 63 that is in contact with the lens holder 62 by the contact portion 66 c is fixed to the apparatus frame 11 by the contact portions 66 a and 66 b of the branch 65 a and the end portion 67 a of the hook 67. An adhesive or the like is not necessary for fixing the spring 63.

  Next, the lens holder 62 is moved and moved in the extending direction indicated by the arrow 64 d of the optical axis 61 a of the sensor lens 61 in a state where the lens holder 62 is temporarily fixed to the apparatus frame 11 by the spring 63, thereby adjusting the position. This position adjustment is performed while the laser light emitted from the laser light source device 21 and the laser light source device 22 is detected by the light receiving element 24 for signal detection. Since the spring 63 is in contact with the curved surface 62d of the lens holder 62 at the contact portion 66c of the branch 65c, when the lens holder 62 is moved in the direction indicated by the arrow 64d, the friction force with the lens holder 62 causes Although a force is applied in the moving direction of the lens holder 62, that is, the direction indicated by the arrow 64d, the lens holder 62 is prevented from moving in the direction indicated by the arrow 64d by contacting the contact portion 11l of the apparatus frame 11 with the side portion 67b of the hook 67. Is done. Further, since the spring 63 has the bent portions 65d disposed on both sides of the tip of the branch 65c, when the lens holder 62 is moved in the direction indicated by the arrow 64d, both side surfaces of the tip of the branch 65c are arranged on the lens. It is possible to prevent the holder 62 from being caught.

  When the position adjustment of the lens holder 62 in the direction indicated by the arrow 64d is completed, the attachment surfaces 62a and 62b of the lens holder 62 are bonded and fixed to the holder fixing surfaces 11e and 11f of the apparatus frame 11 by the UV curable adhesive.

  Since the spring 63 is not fixed by an adhesive or the like, when the hook 67 is pushed into the lens holder 62 side through the through hole 11j, the minor angle 64a is widened, and the end 67a of the hook 67 and the device The contact of the frame 11 with the contact portion 11k is released and the frame 11 can be detached from the apparatus frame 11. Therefore, the spring 63 can be easily attached and detached as compared with the case where the spring 63 is fixed by screws as in the prior art.

  As described above, in the optical head device 10, when the lens holder 62 is fixed to the device frame 11 by the biasing force of the spring 63, the spring 63 is fixed to the device frame 11 by the restoring force generated in the spring 63. Therefore, the spring 63 that fixes the sensor lens 61 to the device frame 11 can be fixed to the device frame 11 by the biasing force of the spring 63 itself. Therefore, the sensor lens 61 can be fixed to the apparatus frame 11 without using a screw, and the number of parts can be reduced.

  Further, in the optical head device 10, the two mounting surfaces 62 a and 62 b of the lens holder 62 are parallel to the optical axis passing through the sensor lens 61, are arranged adjacent to each other and intersect with each other, and at the same time by the spring 63. Therefore, the position of the lens holder 62 with respect to the apparatus frame 11 in the direction orthogonal to the optical axis can be determined. In the optical head device 10, the two mounting surfaces 62a and 62b of the lens holder 62 are not arranged adjacent to each other, that is, the two mounting surfaces 62a and 62b are arranged apart from each other. The same effect can be obtained if the virtual planes including the attachment surfaces 62a and 62b intersect each other.

  Further, since the optical head device 10 has the side portion 67b as a parallel direction movement preventing portion for preventing the spring 63 from moving in the direction indicated by the arrow 64d, the sensor lens 61 is provided with the hook 67 of the spring 63. Even when the sensor lens 61 is fixed to the device frame 11 by the spring 63, the sensor lens 61 can be adjusted in the direction indicated by the arrow 64d. The spring 63 may include a parallel direction movement prevention portion at a place other than the side portion 67 b of the hook 67. For example, the spring 63 may include a parallel direction movement preventing portion on the side portion opposite to the side portion 67b of the hook 67, or may include a parallel direction movement preventing portion on the side portion of the branch 65a. .

  The optical head device 10 has a sensor lens 61 as an optical element fixed to the device frame 11 by a spring 63, but an optical element other than the sensor lens 61 is fixed as an optical element to the device frame 11 by a spring 63. You may have an element.

1 is a perspective view of an optical head device according to an embodiment of the present invention. It is a disassembled perspective view of the optical head apparatus shown in FIG. FIG. 2 is a perspective view of the optical head device shown in FIG. 1 with some components removed. It is side surface sectional drawing of the optical head apparatus shown in FIG. 1, Comprising: It is a figure of the vicinity of a sensor lens. It is the perspective view seen from the upper surface side of the optical head apparatus shown in FIG. 1, Comprising: It is a figure of the vicinity of a sensor lens. (A) It is a front view of the spring of the optical head apparatus shown in FIG. (B) It is a bottom view of the spring of the optical head apparatus shown in FIG. (C) It is side surface sectional drawing of the spring of the optical head apparatus shown in FIG. (A) It is the perspective view seen from the front side of the spring of the optical head apparatus shown in FIG. (B) It is the perspective view seen from the back side of the spring of the optical head apparatus shown in FIG. It is the perspective view seen from the bottom face side of the optical head apparatus shown in FIG. 1, Comprising: It is a figure of the vicinity of a spring. It is the perspective view seen from the upper surface side of the optical head apparatus shown in FIG. 1, Comprising: It is the figure which abbreviate | omitted the sensor lens and the spring.

Explanation of symbols

10 Optical Head Device 11 Device Frame (Base)
21, 22 Laser light source device (laser light source)
24 Light receiving element for signal detection (light receiving element)
30 Optical system 61 Sensor lens (optical element)
61a Optical axis 62 Lens holder (optical element holder)
62a, 62b Mounting surface 63 Spring (biasing member)
64 V-shaped part 64a Recessed angle 64b Superior angle 65a Branch (one branch)
65b vertex 65c branch (the other branch)
66a Contact part (first base contact part)
66b Contact part (second base contact part)
66c Contact part (holder contact part)
67a end (orthogonal direction movement prevention part)
67b Side part (parallel movement prevention part)

Claims (5)

A laser light source, a light receiving element, an optical system for converging laser light emitted from the laser light source to an optical recording medium and guiding return light from the optical recording medium to the light receiving element, the laser light source, and the light receiving element And an optical head device having a base on which the optical system is mounted,
An optical element holder having an attachment surface in contact with the base and holding the optical element of the optical system; and urging the optical element holder to press the attachment surface of the optical element holder against the base and fix the optical element holder A biasing member fixed to the base by the biasing force itself;
The urging member is formed by one and the other branch extending from one intersecting portion to the other intersecting portion, and the urging member is on a minor angle side of the intersecting portion on the one branch. A first base abutting part whose end abuts against the base, a second base abutting part whose apex abuts on the base, and a second base abutting part on the dominant angle side of the intersecting part; A holder abutting portion that is on the minor angle side on the branch and has an end abutting against the optical element holder, the first base abutting portion, the second base abutting portion, and the holder The optical element holder is fixed to the base in a biased state so that the contact angle is in contact with the base, the base, and the optical element holder so that the minor angle becomes larger than that when no load is applied. An optical head device.   The mounting surface includes two mounting surfaces that are parallel to the optical axis passing through the optical element. The two mounting surfaces are arranged adjacent to each other and intersect with each other and are simultaneously pressed against the base by the biasing member. The optical head device according to claim 1, wherein   The mounting surface includes two mounting surfaces that are parallel to the optical axis that passes through the optical element, the two mounting surfaces are spaced apart from each other, and the virtual planes including the two mounting surfaces are mutually connected. 2. The optical head device according to claim 1, wherein the optical head device is crossed and simultaneously pressed against the base by the biasing member.   2. The optical head device according to claim 1, wherein the biasing member includes an orthogonal direction movement preventing unit that prevents the biasing member from moving in a direction orthogonal to the optical axis by contacting the base. 3. 2. The optical head device according to claim 1, wherein the biasing member includes a parallel direction movement preventing unit that prevents the biasing member from moving in a direction parallel to the optical axis by contacting the base. 3.

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