CN1240061C - Method for producing light magnetic head apparatus and light magnetic head apparatus - Google Patents
Method for producing light magnetic head apparatus and light magnetic head apparatus Download PDFInfo
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- CN1240061C CN1240061C CN 03138565 CN03138565A CN1240061C CN 1240061 C CN1240061 C CN 1240061C CN 03138565 CN03138565 CN 03138565 CN 03138565 A CN03138565 A CN 03138565A CN 1240061 C CN1240061 C CN 1240061C
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 118
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 77
- 238000009826 distribution Methods 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract 2
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000011514 reflex Effects 0.000 description 12
- 230000003068 static effect Effects 0.000 description 12
- 239000007767 bonding agent Substances 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 5
- 201000009310 astigmatism Diseases 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
To provide a method for manufacturing an optical head device in which heat radiation to a frame from a laser emitting element can be performed smoothly and a light spot can be formed appropriately for a light receiving element, and to provide an optical head device. When an optical head device 1 is manufactured, since a first laser emitting element 4 is fixed to a frame through a metal attaching member, a heat radiation characteristic is enhanced. At the time, the tilt and the position of an outgoing light axis of the laser emitting element 4 are hard to be adjusted due to the restriction of a structure of the attaching member, but the position adjustment and tilt adjustment are performed by a rising mirror 15.(C)2004,JPO.
Description
Technical field
The present invention relates on framework, to be equipped with the adjustment technology of the light intensity distributions in the light magnetic head apparatus of laser instrument light-emitting component.
Background technology
Light magnetic head apparatus at the record regenerating that is used for CD (small-sized disc) and DVD optical recording medias such as (digital multifunctional discs), by the light-conducting system object lens that lead, will be gathered in optical recording media from the light of laser instrument light-emitting components such as laser diode by the light that object lens are collected.At this moment, on metallic or resinous framework, be equipped with the lens driver of object lens and tracking direction and focus direction driving object lens etc., and, also be equipped with photo detectors such as described laser instrument light-emitting component and photodiode on this framework.Wherein, the laser instrument light-emitting component was to be fixed on the framework by being pressed in the hole on the framework in the past.
Yet, in the structure in the hole that the laser instrument light-emitting component is pressed into framework, can not carry out the optical axis adjustment of laser instrument light-emitting component.
For this reason, in recent years, employing be under the state that the laser instrument light-emitting component is floated from framework, in the middle of it, to be coated with the structure that again the laser instrument light-emitting component is fixed in framework with certain thickness bonding agent.Adopt this structure, the laser instrument light-emitting component is fixed in available posture arbitrarily and position.
Wherein, if the special-purpose light magnetic head apparatus of regeneration, then the distribute heat because of the laser instrument light-emitting component is little, so even carry also accessible under the state that the laser instrument light-emitting component is floated from framework.But when wanting optical recording media write down, the laser instrument light-emitting component thermal value during because of record is big, so this heat must be emitted to framework effectively.
Yet, when under the state that the laser instrument light-emitting component is floated, being adhesively fixed on the framework,,, exist the problem that laser instrument light-emitting component temperature obviously rises so radiating efficiency is low because of between laser instrument light-emitting component and framework, being separated with certain thickness bonding agent.
In view of the above-mentioned problems, the objective of the invention is to, provide a kind of laser instrument light-emitting component that can make successfully to dispel the heat, also can make photo detector be formed with the light magnetic head apparatus manufacture method of correct luminous point to framework.
Summary of the invention
In order to solve above-mentioned problem, the invention provides a kind of manufacture method of light magnetic head apparatus, described light magnetic head apparatus comprises: the laser instrument light-emitting component; Will be from the catoptron of guiding object lens after the laser-bounce of this laser instrument light-emitting component ejaculation; Drive the objective lens device of described object lens along focus direction and tracking direction; Acceptance is from the reflective photo detector of optical recording media; And be equipped with this photo detector, described laser instrument light-emitting component, the framework of described catoptron and described object lens, this method comprises: before described photo detector is equipped on described framework, by practising physiognomy the installation component that contacts when carrying described laser instrument light-emitting component on described framework or after carrying with described framework, penetrate laser from this laser instrument light-emitting component, monitor that according to it result adjusts the position or the degree of tilt of described catoptron on optical axis, adjust thus to the guiding of described object lens the light intensity distributions of laser beam, wherein, described installation component has: the plate that engages with described framework face; And under the state that described laser instrument light-emitting component is kept by the component fixture of described plate lift-launch on described framework, and, described component fixture is connected by the slip curved surface with described plate, the changeable described laser instrument light-emitting component of this slip curved surface is to the degree of tilt of the ejaculation optical axis of described framework, when carrying described laser instrument light-emitting component on described framework by described installation component, on described slip curved surface, by the described relatively plate of described component fixture is slided, degree of tilt to the ejaculation optical axis of described laser instrument light-emitting component is adjusted, and adjusts the light intensity distributions of the laser beam of the described object lens of guiding thus.
In the present invention and since by with framework practise physiognomy the installation component that contact with the lift-launch of laser instrument light-emitting component on framework, therefore, need between laser instrument light-emitting component and framework, not be separated with certain thickness bonding agent.Like this, when optical recording media write down, even laser instrument light-emitting component thermal value is big, this heat also can pass to framework expeditiously by installation component, and the temperature that can restrain the laser instrument light-emitting component rises.Again, when carrying the laser instrument light-emitting component on framework by installation component, though be subjected to the constructional restriction of installation component, be not easy to adjust the inclination and the position thereof of the ejaculation optical axis of laser instrument light-emitting component, but in the present invention, owing to be to be undertaken that this position is adjusted and tilt adjustments etc., so for the laser instrument light-emitting component, be that preferential loading structure is also accessible even adopted with thermal diffusivity by catoptron.
And, utilizing the present invention, from being preferential viewpoint,, also can adjust the degree of tilt of the ejaculation optical axis of laser instrument light-emitting component even use installation component that the laser instrument light-emitting component is carried on framework with thermal diffusivity.
In the present invention, when carrying described laser instrument light-emitting component on described framework, the position of the described installation component on the direction in the face of described framework is adjusted by described installation component.From being preferential viewpoint with thermal diffusivity, even use installation component that the laser instrument light-emitting component is carried on framework, so long as the structure that has adopted installation component and framework to practise physiognomy and contact just can be adjusted the position of the installation component on the direction in the face of framework.
In the present invention, the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result,, adjust the light intensity distributions of the luminous point that forms on this photo detector by adjustment to described photo detector position according to it by described photo detector.From being preferential viewpoint with thermal diffusivity, when using installation component to carry the laser instrument light-emitting component on framework, though can not adjust the position of the optical axis direction of laser instrument light-emitting component, and be not easy to adjust with the light shaft positive cross direction on the ejaculation optical axis, but in this adjustment, can be undertaken by photo detector one side.
In the present invention, dispose the optical grating element of the side beam that is divided into main beam that 0 inflection light by inflection laser constitutes and constitutes by ± 1 inflection light sometimes in the ejaculation direction side of described laser instrument light-emitting component.In this occasion, before described photo detector is fixed in described framework or after fixing, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, when the sensitive surface of relative this photo detector in the position of described side beam tilts, as long as adjust the direction of described optical grating element.Again, among the supervision result by photo detector, when the sensitive surface off normal of described main beam and relative this photo detector in interval of described side beam, as long as adjust the position of described optical grating element on optical axis.
Again, in the manufacture method of light magnetic head apparatus of the present invention, this light magnetic head apparatus comprises: the 1st laser instrument light-emitting component; The 2nd laser instrument light-emitting component that will penetrate with the 1st laser instrument light-emitting component different wavelength of laser; Be configured in the relay lens on the ejaculation optical axis of the 2nd laser instrument light-emitting component; To synthesize to the light path of same light path guiding from described the 1st laser instrument light-emitting component emitted laser with from the laser that described the 2nd laser instrument light-emitting component penetrates by described relay lens and use optical element; Separate the guiding with optical element, the reflective photo detector that acceptance is transmitted via described same light path from optical recording media by light path; And be equipped with described the 1st laser instrument light-emitting component, described the 2nd laser instrument light-emitting component, described relay lens, the synthetic optical element of using of described light path, described light path is separated the framework with optical element and described photo detector, this method comprises: by with practise physiognomy the 1st installation component that contacts of described framework described the 1st laser instrument light-emitting component being carried on described framework, then, by described photo detector the reflective of penetrating from described the 1st laser instrument light-emitting component of laser monitored, monitor the result according to it, by to carrying after the position adjustment of described photo detector on described framework, then, by carrying on described framework after with described the 2nd laser instrument luminous element position adjustment with practise physiognomy the 2nd installation component that contacts of described framework, then, by described photo detector the reflective of penetrating from described the 2nd laser instrument light-emitting component of laser monitored, monitor the result according to it, by the position of described relay lens on optical axis adjusted, adjust the light intensity distributions of the luminous point that forms on the described photo detector, wherein, described the 1st installation component and described the 2nd installation component all have: the plate that engages with described framework face; And under the state that described laser instrument light-emitting component is kept, by the component fixture of described plate lift-launch on described framework, described component fixture is connected by the slip curved surface with described plate, the changeable described laser instrument light-emitting component of this slip curved surface is to the degree of tilt of the ejaculation optical axis of described framework, when carrying described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component respectively on described framework by described the 1st installation component and described the 2nd installation component, on described slip curved surface, by the described relatively plate of described component fixture is slided, degree of tilt to the ejaculation optical axis of described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component is adjusted, and adjusts the light intensity distributions of the laser beam of the described object lens of guiding thus.
In the present invention and since by with framework practise physiognomy the installation component that contact with the 1st laser instrument light-emitting component and the lift-launch of the 2nd laser instrument light-emitting component on framework, therefore, need between laser instrument light-emitting component and framework, not be separated with certain thickness bonding agent.Like this, when optical recording media write down, even laser instrument light-emitting component thermal value is big, this heat also can pass to framework expeditiously by installation component, and the temperature that can restrain the laser instrument light-emitting component rises.Again owing to adopted isomorphic installation component that 2 laser instrument light-emitting components are fixed on the framework, so the influence of environment temperature is identical, takes the countermeasure to temperature variation easily.And, in the present invention, by the 1st installation component the 1st laser instrument light-emitting component is equipped on framework after, with its accordingly just photo detector be equipped on framework, and then the 2nd laser instrument light-emitting component is equipped on framework by the 2nd installation component.Therefore, though be position alignment with photo detector, the 2nd laser instrument light-emitting component is carried out the position adjustment and is equipped on framework, in the present invention because of the 2nd laser instrument light-emitting component being equipped on framework, so can not carry out position adjustment on the optical axis to the 2nd laser instrument light-emitting component by the 2nd installation component.Yet, be not that the 2nd laser instrument light-emitting component is carried out position adjustment on the optical axis in the present invention, but change the position adjustment on the optical axis of relay lens into, therefore can adjust the light intensity distributions of the luminous point that forms on the photo detector.Like this, can successfully dispel the heat to framework, and can on photo detector, form correct luminous point from the laser instrument light-emitting component.
And, utilizing the present invention, from being preferential viewpoint,, also can adjust the degree of tilt of the ejaculation optical axis of laser instrument light-emitting component even use installation component that the laser instrument light-emitting component is carried on framework with thermal diffusivity.
In the present invention, the laser that penetrates from described the 1st laser instrument light-emitting component that is equipped on described framework is monitored, monitor the result according to it,, adjust light intensity distributions thus to the laser beam of described object lens guiding by reflector position or inclination on the described same light path are adjusted.When carrying the 1st laser instrument light-emitting component on framework by installation component, though be subjected to the constructional restriction of the 1st installation component, be not easy to adjust the inclination and the position thereof of the ejaculation optical axis of the 1st laser instrument light-emitting component, but in the present invention, owing to be to carry out adjustment of this position and tilt adjustments etc. by catoptron, therefore for the laser instrument light-emitting component, be that loading structure preferential, the use installation component is also accessible even adopted with thermal diffusivity.
In the present invention, the ejaculation direction side of the laser instrument light-emitting component of at least one side in described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component, when disposing the optical grating element of the side beam that is divided into main beam that 0 inflection light by inflection laser constitutes and constitutes by ± 1 inflection light, before described photo detector is fixed in described framework or after fixing, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, when the sensitive surface of relative this photo detector in the position of described side beam tilts, direction to described optical grating element is adjusted, when the sensitive surface off normal of described main beam and relative this photo detector in interval of described side beam, as long as adjust the position of described optical grating element on optical axis.
In the present invention, described the 1st laser instrument light-emitting component is used for DVD, and described the 2nd laser instrument light-emitting component is used for CD and CD-R.
In sum, in the present invention since by with framework practise physiognomy the installation component that contact with the lift-launch of laser instrument light-emitting component on framework, therefore, need between laser instrument light-emitting component and framework, not be separated with certain thickness bonding agent.Like this, when optical recording media write down, even laser instrument light-emitting component thermal value is big, this heat also can pass to framework expeditiously by installation component, and the temperature that can restrain the laser instrument light-emitting component rises.Again, when carrying the laser instrument light-emitting component on framework by installation component, though be subjected to the constructional restriction of installation component, be not easy to adjust the inclination and the position thereof of the ejaculation optical axis of laser instrument light-emitting component, but in the present invention, owing to be to be undertaken that this position is adjusted and tilt adjustments etc., so for the laser instrument light-emitting component, be that the loading structure of preferential use installation component is also accessible even adopted with thermal diffusivity by catoptron.
Again, in the present invention since by with framework practise physiognomy the installation component that contact with the 1st laser instrument light-emitting component and the lift-launch of the 2nd laser instrument light-emitting component on framework, therefore, need between laser instrument light-emitting component and framework, not be separated with certain thickness bonding agent.Like this, when optical recording media write down, even laser instrument light-emitting component thermal value is big, this heat also can pass to framework expeditiously by installation component, and the temperature that can restrain the laser instrument light-emitting component rises.Again owing to adopted isomorphic installation component that 2 laser instrument light-emitting components are fixed on the framework, so the influence of environment temperature is identical, takes the countermeasure to temperature variation easily.And, in the present invention, by the 1st installation component the 1st laser instrument light-emitting component is equipped on framework after, with its accordingly just photo detector be equipped on framework, and then the 2nd laser instrument light-emitting component is equipped on framework by the 2nd installation component.Therefore with the position alignment of photo detector, the 2nd laser instrument light-emitting component is carried out the position adjustment and is equipped on framework, but in the present invention, because of the 2nd laser instrument light-emitting component being equipped on framework, so can not carry out position adjustment on the optical axis to the 2nd laser instrument light-emitting component by the 2nd installation component.And in the present invention, be not that the 2nd laser instrument light-emitting component is carried out position adjustment on the optical axis, but changing the position adjustment on the optical axis of relay lens into, therefore, can adjust the light intensity distributions of the luminous point that forms on the photo detector.Like this, can successfully dispel the heat to framework, and can on photo detector, form correct luminous point from the laser instrument light-emitting component.
The simple declaration of accompanying drawing
Fig. 1 is the stereographic map of the light magnetic head apparatus used of CD, CD-R and DVD record regenerating.
Fig. 2 is the planimetric map of light magnetic head apparatus shown in Figure 1.
Fig. 3 is the longitudinal diagram of light magnetic head apparatus shown in Figure 1.
Fig. 4 is the key diagram of plane figure in the light magnetic head apparatus shown in Figure 1, the expression optical system.
Fig. 5 is for seeing the key diagram of the framework that uses the light magnetic head apparatus shown in Fig. 1 from oblique below.
Fig. 6 (A), (B) be respectively in the light magnetic head apparatus shown in Figure 1, expression carries the 1st laser instrument light-emitting component by installation component the outboard profile and the drawing in side sectional elevation of state on framework.
Fig. 7 (A), (B) be respectively in the light magnetic head apparatus shown in Figure 1, expression carries the 2nd laser instrument light-emitting component by installation component the outboard profile and the drawing in side sectional elevation of state on framework.
Fig. 8 (A)～(D) be in the light magnetic head apparatus shown in Figure 1, to the key diagram of the light intensity distributions of the laser beam of object lens guiding.
Fig. 9 in the light magnetic head apparatus shown in Figure 1, the expression photo detector is formed with the key diagram of the luminous point state of main beam and side beam.
Figure 10 is key diagram in the light magnetic head apparatus shown in Figure 1, that represent to be used in the installation component variation of installation laser instrument light-emitting component on the framework.
Embodiment
Explanation is suitable for light magnetic head apparatus of the present invention with reference to the accompanying drawings.
(integral body of light magnetic head apparatus constitutes)
Fig. 1 is the stereographic map of the light magnetic head apparatus used of CD, CD-R and DVD record regenerating.Fig. 2 is the planimetric map of light magnetic head apparatus shown in Figure 1.Fig. 3 is the longitudinal diagram of light magnetic head apparatus shown in Figure 1.Fig. 4 is the key diagram of plane figure in the light magnetic head apparatus shown in Figure 1, the expression optical system.
As depicted in figs. 1 and 2, this routine optical recording media 1 has resin system or metal framework 3.By being parallel to each other 2 axles (not shown) break-through that shape installs in linking part 301,302,303 with respect to machine, this framework 3 can move along guide shaft.
On the side surface part 32,33 of this framework 3, be equipped with the 2nd laser instrument light-emitting component 5 that the 1st laser instrument light-emitting component 4 that DVD uses and CD use respectively.DVD is used for the record regenerating of DVD with the 1st laser instrument light-emitting component 4, penetrates the laser of wavelength 650nm or 635nm.CD with the 2nd laser instrument light-emitting component 5 be used for CD with and the record regenerating of CD-R, the laser of ejaculation wavelength 780～800nm.
On framework 3, be equipped with flexible base, board 8, in the body 81 of this flexible base, board 8, be assembled with to drive and use IC10, be covered with the metal heat sink 21 that is fixed in framework 3 by screw 22 with the top position of IC10 in this driving.Like this, the heat that is taken place by IC10 is emitted by heat sink 21.And IC10 and heat sink 21 are configured in the top 31 of framework 3, and optical recording media is in this regional top position revolution.Thus, heat sink 21 is followed air-flow that the revolution of optical recording media produces bulk storage heat expeditiously, the reliability height of light magnetic head apparatus 1.
As described later, on framework 3, assemble photo detector, sensor leads, sighting the optical element of lens and static reflex mirror (catoptron) etc., above the static reflex mirror, disposing the object lens 9 that penetrate laser to optical recording media (not shown).On framework 3, also carrying the objective lens device 50 that focus direction and tracking direction drive object lens 9 again.As objective lens device 50, used the slide drive unit of the type that reverses of axle in this example.
In Fig. 3 and Fig. 4, the optical system of light magnetic head apparatus 1 is except the 1st laser instrument light-emitting component 4 of the 1st laser L1 (long wavelength's laser) that penetrates DVD and use and penetrate the 2nd laser instrument light-emitting component 5 of the 2nd laser L2 that CD uses, ejaculation optical axis along the 1st laser instrument light-emitting component 4 disposes the 1st optical grating element the 11, the 1st prism the 12, the 2nd prism 13 successively, sights lens 14 and static reflex mirror 15 (catoptron), disposes object lens 9 above static reflex mirror 15.Wherein, the 1st prism the 12, the 2nd prism 13, sight the same light path that lens 14, static reflex mirror 15 and object lens 9 have constituted the 1st laser L1, the 2nd laser L2 and reflective Lr.
The 1st optical grating element 11 have fixed inflection characteristic, by being divided into 3 wave beams, adopt known 3 wave beam methods or DPP method from the 1st laser L1 that the 1st laser instrument light-emitting component 4 penetrates, can carry out trail-and-error and detect.
After the 1st laser L1 that penetrates from the 1st laser instrument light-emitting component 4 is divided into 2 wave beams by the 1st optical grating element 11, see through the part reflecting face of the 1st prism 12 and the part reflecting face of the 2nd prism 13, be transformed to parallel beam by sighting lens 14 then, by static reflex mirror 15 guiding object lens 9, be collected in optical recording media D by object lens 9 then again.
The 2nd prism 13 promptly is the synthetic prism of using of light path, the inclined light shaft of the laser L2 that the part reflecting face of this prism penetrates from the 1st laser instrument light-emitting component 4 relatively becomes the states of 45 degree, is disposing relay lens the 16, the 2nd optical grating element 17 and the 2nd laser instrument light-emitting component 5 successively in the position, side of the 2nd prism 13.
The 2nd optical grating element 17 also have fixed inflection characteristic, by being divided into 3 wave beams with the 2nd laser L2 that the 2nd laser instrument light-emitting component 5 penetrates, adopt known 3 wave beam methods or DPP method from CD, can carry out trail-and-error and detect.
After the 2nd laser L2 that penetrates from the 2nd laser instrument light-emitting component 5 is divided into 3 wave beams by the 2nd optical grating element 17, see through relay lens 16 and sight lens 14 by the part reflecting face guiding of the 2nd prism 13 again, be transformed to parallel beam by sighting lens 14, then by static reflex mirror 15 guiding object lens 9, equally with the 1st laser L1 be collected in optical recording media by object lens 9.
In this example, the 1st prism 12 promptly is that light path is separated and use prism, and the part reflecting face of this prism becomes 45 states of spending from the inclined light shaft of the reflective Lr of optical recording media D relatively, sensor leads 18 and photo detector 2 in the side position configuration of the 1st prism 12.Like this, from the reflective Lr of optical recording media D by object lens 9, static reflex mirror 15, sight lens the 14, the 2nd prism 13 and be directed to the 1st prism 12, reflect by the part reflecting face of the 1st prism, arrive photo detectors 2 by sensor leads 18.
Sensor leads 18 promptly is the lens that the reflective generation astigmatism of both sides' laser L1, L2 is used, and the reflective Lr of laser L1, the L2 that is detected by photo detector 2 by sensor leads 18 astigmatism takes place.Like this, well-known, cut apart sensitive surface by on photo detector 2, having formed 4, can from cutting apart the photoelectricity flow of sensitive surface, these focus on revisal.
In addition, for example can be at reverse side configuration monitoring relative the 2nd prism 13 and the 2nd laser instrument light-emitting component 5 photo detector (not shown).
[loading structure on the framework]
Fig. 5 is for seeing the key diagram of the framework that uses the light magnetic head apparatus shown in Fig. 1 from oblique below.Fig. 6 (A), (B) be respectively in the light magnetic head apparatus shown in Figure 1, expression carries the 1st laser instrument light-emitting component by installation component the outboard profile and the drawing in side sectional elevation of state on framework.Fig. 7 (A), (B) be respectively in the light magnetic head apparatus shown in Figure 1, expression carries the 2nd laser instrument light-emitting component by installation component the outboard profile and the drawing in side sectional elevation of state on framework.
Shown in the state of seeing from oblique below among Fig. 5, framework 3 except the side surface part 32 of carrying the 1st laser instrument light-emitting component 4 and the side surface part 33 of carrying the 2nd laser instrument light-emitting component 5, also be formed with equipped section the 34, the 2nd prism 13 of the 1st prism 12 equipped section 35, sight the equipped section 36 of prism 14 and the equipped section 37 of static reflex mirror 15.
In this routine light magnetic head apparatus 1, shown in Fig. 5 and Fig. 6 (A), (B), as the installation component 60 that the 1st laser instrument light-emitting component 4 is equipped on side surface part 32 usefulness of framework 3, the parts that used the high component fixture 62 of thermal diffusivity by high plate 61 of metal thermal diffusivity and same metal system to constitute.Plate 61 promptly is and 32 tabular components that engage of side surface part of framework 3 that the inboard of component fixture 62 keeps the 1st laser instrument light-emitting component 4.The both sides of component fixture 62 front faces have formed curved surface 621, but form the recess 611 of the curved surface 621 of receiving element anchor clamps 62 in the side of plate 61, and component fixture 62 can be turned round at the inner face of curved surface 621 and recess 611 as slipping plane 601.
Again, made can be along the size of direction (direction shown in arrow X1 and the Y1) position in the side surface part 32 adjustment faces of framework 3 for plate 61.Like this, the 1st laser instrument light-emitting component 4 direction in the face of the side surface part 32 of framework 3, can slide on slipping plane 601 by component fixture 62 simultaneously in the enterprising line position adjustment of the direction shown in arrow X1, the Y1, can shown in arrow R1, carry out the revolution of horizontal direction.
Again, among Fig. 5, the inboard that the 2nd laser instrument light-emitting component 5 carries part promptly is the semicircular vat 38 of section, under the state that is installed in cylindrical shape anchor clamps 170, can carry the 2nd optical grating element 17, and the two end portions in the both sides of groove 38 with respect to the lens holder 160 that keeps relay lens 16 is formed with smooth planar support 39.Like this, the 2nd optical grating element 17 can turn round around optical axis shown in arrow R6 simultaneously in the enterprising line position adjustment of optical axis direction shown in arrow Z2.Again, the 2nd optical grating element 17 is shown on the optical axis direction as arrow Z4 and can carries out the position adjustment.
The 1st optical grating element 11 also for example with the 2nd optical grating element 17 the same remaining on the anchor clamps 110 cylindraceous, can be shown in arrow Z1 in the enterprising line position adjustment of optical axis direction, shown in arrow R7, can around optical axis, turn round simultaneously.
Wherein, shown in Fig. 5 and Fig. 7 (A), (B), the 2nd laser instrument light-emitting component 5 is the same with the 1st laser instrument light-emitting component 4, as the installation component 70 that the 2nd laser instrument light-emitting component 5 is equipped on side surface part 32 usefulness of framework 3, adopts the parts that are made of plate 71 and component fixture 72.Plate 71 promptly is and 33 tabular components that engage of side surface part of framework 3 that component fixture 72 side within it maintains the 2nd laser instrument light-emitting component 5.The both sides of component fixture 72 front faces have formed curved surface 721, but form the recess 711 of the curved surface 721 of receiving element anchor clamps 72 in the side of plate 71, and component fixture 72 can be turned round at the inner face of D curved surface 721 and recess 711 as slipping plane 701.
Again, the size of plate 71 is can be along direction (direction shown in arrow X2 and the Y2) position in the side surface part 32 adjustment faces of framework 3.Like this, the 2nd laser instrument light-emitting component 5 direction in the face of the side surface part 32 of framework 3 can move on the direction shown in arrow X2, the Y2, slides on slipping plane 701 by component fixture 72 simultaneously, can carry out the revolution of horizontal direction shown in arrow R2.
In this example, owing to by isomorphic installation component 60,70 2 laser instrument light-emitting components 4,5 are fixed on the framework 3, therefore, the influence of environment temperature is identical, can take some countermeasures to temperature variation easily.
In addition, shown in the arrow Z3 among Fig. 4, sensor leads 18 also can be in the enterprising line position adjustment of optical axis direction.
[manufacture method of light magnetic head apparatus]
Fig. 8 (A)～(D) be in the light magnetic head apparatus shown in Figure 1, to the key diagram of the light intensity distributions of the laser beam of object lens guiding.Fig. 9 in the light magnetic head apparatus shown in Figure 1, the expression photo detector is formed with the key diagram of the luminous point state of main beam and side beam.Figure 10 is key diagram in the light magnetic head apparatus shown in Figure 1, that represent to be used in the installation component variation of installation laser instrument light-emitting component on the framework.
When making this routine light magnetic head apparatus 1, about the 1st laser instrument light-emitting component 4, at first be to make the 1st laser instrument light-emitting component 4 luminous, by object lens 9 it is monitored, simultaneously, with plate 61 with component fixture 62 along the side surface part 32 of framework 3 in the enterprising line position adjustment of 2 direction of principal axis (X1 and Y1 direction).
That is, consider thermal diffusivity, this routine installation component 60 has adopted installation component 60 and 3 contacting structure of framework, so can direction carry out the position adjustment in the face of framework 3.
At this moment, on object lens 9, shown in Fig. 8 (A), if the center 90 of object lens 9 is consistent with the center L0 of light beam, then shown in Fig. 8 (B), (C), can form the point of correct light intensity distributions for the tracking of optical recording media D, and, the point of correct light intensity distributions also can be formed for photo detector 2.
Like this, according to monitoring the result, shown in Fig. 8 (D), when the beam center L0 of optical axis from the center 90 (beam center in the design) of object lens 9 when having departed from the distance beta part, at first static reflex mirror 15 is carried out position or tilt adjustments on the optical axis, the center 90 of object lens 9 is aimed at the center L0 of light beam.
In this example, by installation component 60 the 1st laser instrument light-emitting component 4 is carried on framework 3, though be subjected to installation component 60 constructional restrictions, be not easy the inclination and the position thereof of the ejaculation optical axis of regulation 1 laser instrument light-emitting component 4, but adjust and tilt adjustments owing to carry out this position by static reflex mirror 15, therefore adopted loading structure for the 1st laser instrument light-emitting component 4 by installation component 60, even with thermal diffusivity for preferentially also accessible.
At first, shown in Fig. 8 (D), when the ejaculation optical axis of the 1st laser instrument light-emitting component 4 has tilted the angle [alpha] part and when making beam center L0 from center 90 off normals of object lens 9 in the horizontal direction, make component fixture 62 by shown in the arrow R1 relatively plate 61 slide and turn round, by adjusting the degree of tilt that the 1st laser instrument light-emitting component 4 penetrates optical axis, the center 90 of object lens 9 is aimed at the center L0 of light beam.
Like this, on the installation component 60 that this example is used, owing to plate 61 is connected with component fixture 62 by slip curved surface 601, therefore, even with the thermal diffusivity is the loading structure of preferentially having taked to use installation component 60, also can adjust the degree of tilt that the 1st laser instrument light-emitting component 4 penetrates optical axis.
After this adjustment, when the side surface part 32 with plate 61 and framework 3 is adhesively fixed, component fixture 62 and plate 61 are adhesively fixed.
Like this, after being fixed on the 1st laser instrument light-emitting component 4 on the framework 3, make the 1st laser instrument light-emitting component 4 luminous, to its reflective supervision, monitor the result, on the optimum position, photo detector 2 and framework 3 are adhesively fixed according to this by photo detector 2.
On photo detector 2, as shown in Figure 9, formed 4 of point with the main beam L11 that constitutes by 0 inflection light cut apart sensitive surface 201 and have the side beam L12 that constitutes by ± 1 inflection light point 2 cut apart sensitive surface 202.Thus, in supervision result, when the relative sensitive surface 201,202 in the position of side beam L12 has tilted the angle gamma portion, the direction of the 1st optical grating element 11 is adjusted by photo detector 2.
When relative sensitive surface 201,202 off normals of interval G1, the G of main beam L11 and side beam L12, the position on the optical axis of the 1st optical grating element 11 is adjusted again.After also can or being adhesively fixed before photo detector 2 and framework 3 are adhesively fixed, this adjustment carries out in arbitrary time.
Secondly, the 2nd laser instrument light-emitting component 5 is also the same with the 1st laser instrument light-emitting component 4, make the 2nd laser instrument light-emitting component 5 luminous, by object lens 9 it is monitored, at this moment, though adjustment has been done in the position of static reflex mirror 15, has occurred sometimes having tilted the angle [alpha] part in the horizontal direction and having made the occasion of beam center L0 from center 90 off normals of object lens 9 when the ejaculation optical axis of the 2nd laser instrument light-emitting component 5.In this occasion, make component fixture 62 by shown in the arrow R2 relatively plate 61 slide and turn round, by adjusting the degree of tilt that the 2nd laser instrument light-emitting component 5 penetrates optical axises, the center 90 of object lens 9 is aimed at the center L0 of light beam.
Monitor by 2 pairs of the 2nd the reflective of penetrating from the 2nd laser instrument light-emitting component 5 of laser L2 of photo detector, monitor among the result at this, when the optical axis deviation of the 2nd laser instrument light-emitting component 5 during with the direction of its quadrature, with plate 71 with component fixture 72 along the side surface part 33 of framework 3 in the enterprising line position adjustment of 2 direction of principal axis (X2 and Y2 direction).
That is, consider thermal diffusivity, installation component 70 has also adopted installation component 70 and 3 contacting structure of framework, so can direction carry out the position adjustment of installation component 70 in the face of framework 3.
After this adjustment, when the side surface part 33 with plate 71 and framework 3 is adhesively fixed, component fixture 72 and plate 71 are adhesively fixed.
Like this, after being fixed on the 2nd laser instrument light-emitting component 5 on the framework 3 or before fixing, monitor by 2 pairs of the 2nd the reflective of penetrating from the 2nd laser instrument light-emitting component 5 of laser L2 of photo detector, monitor among the result at this, when the position off normal on the 2nd laser instrument light-emitting component 5 optical axises and not with in focus the time, though can not make adjustment by the position that 70 pairs of installation components are fixed on the 2nd laser instrument light-emitting component 5 optical axises of side surface part 33 usefulness of framework 3 for the 2nd laser instrument light-emitting component 5, but in this example, by being shown on the optical axis by arrow Z2, moves relay lens 16, sensor leads 18 is shown on the optical axis by arrow Z3 moves, can be in focus with the 2nd laser instrument light-emitting component 5 and photo detector 2.
At this moment, as shown in Figure 9, on photo detector 2, when the relative sensitive surface in the position of side beam L12 201,202 has tilted the angle gamma portion from the optimum position, the direction of optical grating element 11 is adjusted.When relative sensitive surface 201,202 off normals of interval G1, the G of main beam L11 and side beam L12, the position on the optical axis of optical grating element 11 is adjusted again.This adjustment also can be carried out in arbitrary time before the 2nd laser instrument light-emitting component 5 and framework 3 are fixed or after fixing.
[other embodiment]
In the above-described embodiments, as the installation component 60,70 that laser instrument light-emitting component 4,5 is equipped on framework 3 usefulness, constitute by plate 61,71 and component fixture 62,72, but also can be as shown in figure 10, when the inclined light shaft revisal of the horizontal direction that does not need to carry out to illustrate, adopt laser instrument light-emitting component 4,5 to be installed in the element mounting hole that forms on this installation component 60,70 by 1 installation component that metal plate constituted 60,70 that contacts with 3 of frameworks with reference to Fig. 8.
Claims (10)
1. the manufacture method of a light magnetic head apparatus, described light magnetic head apparatus comprises: the laser instrument light-emitting component; Will be from the catoptron of guiding object lens after the laser-bounce of this laser instrument light-emitting component ejaculation; Drive the objective lens device of described object lens along focus direction and tracking direction; Acceptance is from the reflective photo detector of optical recording media; And the framework that is equipped with this photo detector, described laser instrument light-emitting component, described catoptron and described object lens, this method comprises:
By with described framework practise physiognomy the installation component that contacts carry described laser instrument light-emitting component on described framework in or carry after, penetrate laser from this laser instrument light-emitting component, monitor that according to it result adjusts the position or the degree of tilt of described catoptron on optical axis, adjust light intensity distributions thus to the laser beam of described object lens guiding, wherein
Described installation component has: the plate that engages with described framework face; And under the state that described laser instrument light-emitting component is kept by the component fixture of described plate lift-launch on described framework,
Described component fixture is connected by the slip curved surface with described plate, and the changeable described laser instrument light-emitting component of this slip curved surface is to the degree of tilt of the ejaculation optical axis of described framework,
When carrying described laser instrument light-emitting component on described framework by described installation component, on described slip curved surface,, adjust the light intensity distributions of the laser beam of the described object lens of guiding thus by the described relatively plate slip of described component fixture is adjusted the degree of tilt of the ejaculation optical axis of described laser instrument light-emitting component.
2. light magnetic head apparatus manufacture method as claimed in claim 1 is characterized in that, when carrying described laser instrument light-emitting component on described framework by described installation component, the position of the described installation component on the direction in the face of described framework is adjusted.
3. light magnetic head apparatus manufacture method as claimed in claim 1, it is characterized in that, before being fixed on described photo detector on the described framework, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, by the adjustment of described photo detector position being adjusted the light intensity distributions of the luminous point that forms on this photo detector.
4. light magnetic head apparatus manufacture method as claimed in claim 1, it is characterized in that, dispose the optical grating element of the side beam that is divided into main beam that 0 inflection light by inflection laser constitutes and constitutes by ± 1 inflection light in the ejaculation direction side of described laser instrument light-emitting component
Before described photo detector is fixed in described framework or after fixing, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, when the sensitive surface of relative this photo detector in the position of described side beam tilts, the direction of described optical grating element is adjusted.
5. light magnetic head apparatus manufacture method as claimed in claim 1, it is characterized in that, dispose the optical grating element of the side beam that is divided into main beam that 0 inflection light by inflection laser constitutes and constitutes by ± 1 inflection light in the ejaculation direction side of described laser instrument light-emitting component
Before described photo detector is fixed in described framework or after fixing, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, when the sensitive surface off normal of described main beam and relative this photo detector in interval of described side beam, the position on the optical axis of described optical grating element is adjusted.
6. the manufacture method of a light magnetic head apparatus, described light magnetic head apparatus comprises: the 1st laser instrument light-emitting component; The 2nd laser instrument light-emitting component that will penetrate with the 1st laser instrument light-emitting component different wavelength of laser; Be configured in the relay lens on the ejaculation optical axis of the 2nd laser instrument light-emitting component; To synthesize to the light path of same light path guiding from described the 1st laser instrument light-emitting component emitted laser with from the laser that described the 2nd laser instrument light-emitting component penetrates by described relay lens and use optical element; Separate the guiding with optical element, the reflective photo detector that acceptance is transmitted via described same light path from optical recording media by light path; And be equipped with described the 1st laser instrument light-emitting component, described the 2nd laser instrument light-emitting component, described relay lens, the synthetic framework of using optical element, the separation of described light path to use optical element and described photo detector of described light path, this method comprises:
By described the 1st laser instrument light-emitting component being carried on described framework with practise physiognomy the 1st installation component that contacts of described framework,
Secondly, the reflective of penetrating from described the 1st laser instrument light-emitting component of laser monitored, monitors that according to it result carries out the position to described photo detector and adjusts and carry on described framework by described photo detector,
Then, by described the 2nd laser instrument light-emitting component is carried out the position adjusting and carry on described framework with practise physiognomy the 2nd installation component that contacts of described framework,
Then, by described photo detector the reflective of penetrating from described the 2nd laser instrument light-emitting component of laser monitored, monitor the result according to it, by carrying out described relay lens is adjusted the position adjustment on the optical axis light intensity distributions of the luminous point that forms on the described photo detector, wherein
Described the 1st installation component and described the 2nd installation component all have: the plate that engages with described framework face; And under the state that described laser instrument light-emitting component is kept by the component fixture of described plate lift-launch on described framework,
Described component fixture is connected by the slip curved surface with described plate, and the changeable described laser instrument light-emitting component of this slip curved surface is to the degree of tilt of the ejaculation optical axis of described framework,
When carrying described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component respectively on described framework by described the 1st installation component and described the 2nd installation component, on described slip curved surface, by the described relatively plate slip of described component fixture is adjusted the degree of tilt of the ejaculation optical axis of described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component, adjust the light intensity distributions of the laser beam of the described object lens of guiding thus.
7. light magnetic head apparatus manufacture method as claimed in claim 6, it is characterized in that, the laser that penetrates from described the 1st laser instrument light-emitting component that is equipped on described framework is monitored, monitor the result according to it, by reflector position or inclination on the described same light path are adjusted, adjust light intensity distributions thus to the laser beam of described object lens guiding.
8. light magnetic head apparatus manufacture method as claimed in claim 6, it is characterized in that, the ejaculation direction side of the laser instrument light-emitting component of at least one side in described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component disposes the optical grating element of the side beam that is divided into main beam that 0 inflection light by inflection laser constitutes and is made of ± 1 inflection light
Before described photo detector is fixed in described framework or after fixing, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, when the sensitive surface of relative this photo detector in the position of described side beam tilts, the direction of described optical grating element is adjusted.
9. light magnetic head apparatus manufacture method as claimed in claim 6, it is characterized in that, the ejaculation direction side of the laser instrument light-emitting component of at least one side in described the 1st laser instrument light-emitting component and described the 2nd laser instrument light-emitting component, dispose the optical grating element of the side beam that is divided into main beam that 0 inflection light by inflection laser constitutes and constitutes by ± 1 inflection light
Before described photo detector is fixed in described framework or after fixing, by described photo detector the reflective of penetrating from described laser instrument light-emitting component of laser monitored, monitor the result according to it, when the sensitive surface off normal of described main beam and relative this photo detector in interval of described side beam, the position of described optical grating element on optical axis adjusted.
10. light magnetic head apparatus manufacture method as claimed in claim 6 is characterized in that, described the 1st laser instrument light-emitting component is used for DVD, and described the 2nd laser instrument light-emitting component is used for CD and CD-R.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002159400A JP2004005823A (en) | 2002-05-31 | 2002-05-31 | Method for manufacturing optical head device and optical head device |
| JP2002159400 | 2002-05-31 | ||
| JP2002165962A JP2004014007A (en) | 2002-06-06 | 2002-06-06 | Method for manufacturing optical head device |
| JP2002165962 | 2002-06-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1469357A CN1469357A (en) | 2004-01-21 |
| CN1240061C true CN1240061C (en) | 2006-02-01 |
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ID=34196483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03138565 Expired - Fee Related CN1240061C (en) | 2002-05-31 | 2003-05-29 | Method for producing light magnetic head apparatus and light magnetic head apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1240061C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5085988B2 (en) * | 2007-06-21 | 2012-11-28 | 株式会社日立製作所 | Manufacturing method of optical element integrated head |
-
2003
- 2003-05-29 CN CN 03138565 patent/CN1240061C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1469357A (en) | 2004-01-21 |
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Owner name: NIDEC SANKYO CORP. Free format text: FORMER NAME OR ADDRESS: SANKYO SEIKI MFG. SEISAKUSHO K.K. |
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