JPH08153334A - Lens holder of cd pickup - Google Patents
Lens holder of cd pickupInfo
- Publication number
- JPH08153334A JPH08153334A JP31755194A JP31755194A JPH08153334A JP H08153334 A JPH08153334 A JP H08153334A JP 31755194 A JP31755194 A JP 31755194A JP 31755194 A JP31755194 A JP 31755194A JP H08153334 A JPH08153334 A JP H08153334A
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- wiring board
- pickup
- flexible wiring
- thin film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010409 thin film Substances 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000007747 plating Methods 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000011231 conductive filler Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＣＤピックアップのレ
ンズホルダーの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a lens holder for a CD pickup.
【０００２】[0002]
【従来の技術】従来、この種のＣＤピックアップのレン
ズホルダーとして、対物レンズを支持する合成樹脂製の
レンズホルダーの外周面に給電用配線層を備えたフレキ
シブル配線基板を貼り付け、その上に湾曲させたフォー
カッシング用およびトラッキング用薄膜コイルをそれぞ
れ接着し、その後、半田ペースト等により配線基板側に
前記コイルの巻回端を導電接続して実装したものが知ら
れている。2. Description of the Related Art Conventionally, as a lens holder for a CD pickup of this type, a flexible wiring board having a power supply wiring layer is attached to the outer peripheral surface of a lens holder made of synthetic resin for supporting an objective lens, and a flexible wiring board is bent on the outer surface. It is known that the focusing and tracking thin-film coils are adhered to each other, and then the winding ends of the coils are electrically connected and mounted on the wiring board side by solder paste or the like.
【０００３】図２および図３に、従来のＣＤピックアッ
プのレンズホルダーの構造およびそれにフレキシブル配
線基板および薄膜コイルを取り付ける手段を示す。製作
工程としては、図２に示すように、フレキシブル配線基
板の取り付け面の形状に合わせて形成した表面をもつ型
材１を用意し、この型材の表面にフレキシブル配線基板
２を接着剤等により仮着した状態として、この仮着した
基板表面に接着剤を塗布したフォーカッシング用薄膜コ
イル３、トラッキング用薄膜コイル４を治具５により押
し付けて接着すると共に、その薄膜コイルを、型材１の
治具５との押圧挟持により、所望の形状に湾曲し、その
後、前記フレキシブル配線基板２を型材１から取り外
し、図３に示すように、合成樹脂製レンズホルダー６に
接着剤により貼り付ける。なお、図３においては、７は
対物レンズ、８は支持軸、９は内ヨーク、１０は外ヨー
ク、１１はマグネットである。2 and 3 show the structure of a conventional lens holder for a CD pickup and a means for attaching a flexible wiring board and a thin film coil thereto. In the manufacturing process, as shown in FIG. 2, a mold material 1 having a surface formed according to the shape of the mounting surface of the flexible wiring board is prepared, and the flexible wiring board 2 is temporarily attached to the surface of the mold material with an adhesive or the like. In this state, the thin film coil 3 for focusing and the thin film coil 4 for tracking, which are coated with an adhesive, are pressed and bonded by the jig 5 to the surface of the temporarily attached substrate, and the thin film coil is fixed to the jig 5 of the mold material 1. The flexible wiring board 2 is removed from the mold material 1 by being pressed and clamped by the and, and is then attached to the synthetic resin lens holder 6 with an adhesive as shown in FIG. In FIG. 3, 7 is an objective lens, 8 is a support shaft, 9 is an inner yoke, 10 is an outer yoke, and 11 is a magnet.
【０００４】[0004]
【発明が解決しようとする課題】上記ＣＤピックアップ
のレンズホルダーの構成にあっては、フレキシブル配線
基板は高単価であり、全体コストに占める割合が高く、
これが製造上で問題とされている。In the structure of the lens holder of the above CD pickup, the flexible wiring board has a high unit price, and its ratio to the total cost is high.
This is a problem in manufacturing.
【０００５】[0005]
【発明の目的】本発明は、上述した問題点に鑑みてなさ
れたもので、高単価なフレキシブル配線基板を使用する
必要がないＣＤピックアップのレンズホルダーを提供す
ることを主たる目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a main object of the present invention is to provide a lens holder for a CD pickup that does not require the use of a highly unitary flexible wiring board.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明によるＣＤピックアップのレンズホルダー
は、レンズホルダーの外周部に導電部材を直接印刷、ま
たはメッキ等により形成し、この導電部材に薄膜コイル
が導通するように実装されたことを要旨としている。In order to achieve the above object, the lens holder of the CD pickup according to the present invention has a conductive member directly formed on the outer peripheral portion of the lens holder by printing or plating, and a thin film is formed on the conductive member. The gist is that the coil is mounted so as to be conductive.
【０００７】[0007]
【作用】上記構成によれば、レンズホルダーに導電部材
で直接施した印刷、またはメッキ等がフレキシブル配線
基板の役目を果たすので、フレキシブル配線基板を使用
しなくてもすむ。According to the above construction, printing or plating directly applied to the lens holder with a conductive member serves as a flexible wiring board, so that it is not necessary to use a flexible wiring board.
【０００８】[0008]
【実施例】図１に、本発明の一実施例を示す。図１にお
いて、２０はＰＰＳ（ポリフェニレンサルファイド）樹
脂よりなるレンズホルダー、２１は対物レンズであり、
レンズホルダー２０の外周面には、所定の回路パターン
に触媒を付与し、Ｐｄ（パラジウム）等を回路パターン
に析出させ、その後、電解銅めっきを施して成る回路パ
ターン２２が形成され、次にそこに湾曲させたトラッキ
ング用薄膜コイル２３およびフォーカッシング用薄膜コ
イル２４の各コイルを接着し、半田にて前記回路に導通
させることにより、ホルダーへのコイル実装がなされて
いる。FIG. 1 shows an embodiment of the present invention. In FIG. 1, 20 is a lens holder made of PPS (polyphenylene sulfide) resin, 21 is an objective lens,
A circuit pattern 22 is formed on the outer peripheral surface of the lens holder 20 by applying a catalyst to a predetermined circuit pattern, depositing Pd (palladium) or the like on the circuit pattern, and then performing electrolytic copper plating. Each of the tracking thin-film coil 23 and the focusing thin-film coil 24, which are curved, is adhered to each other and electrically connected to the circuit by soldering, whereby the coil is mounted on the holder.
【０００９】また、触媒付与の他に、導電性フィラー等
を入れた樹脂を用いて２色成形の回路パターンを作り、
その上に銅メッキを施す方法や、また、レンズホルダー
の外周面に導電ペーストを直接塗布して印刷回路を形成
した後、半田ペーストや導電ペーストによりコイルを実
装してもよい。In addition to applying a catalyst, a resin pattern containing a conductive filler or the like is used to form a two-color molding circuit pattern,
Alternatively, a copper plating may be applied thereon, or the outer peripheral surface of the lens holder may be directly coated with a conductive paste to form a printed circuit, and then the coil may be mounted with a solder paste or a conductive paste.
【００１０】[0010]
【発明の効果】以上、詳述したように、本発明によるＣ
Ｄピックアップのレンズホルダーの構成によれば、下記
のような効果が得られる。 （１）レンズホルダーの外周面に導電部材を直接印刷、
またはメッキ等により回路パターンを形成するので、高
単価のフレキシブル配線基板を使用する必要がなくな
り、コスト低減が可能となる。 （２）印刷またはメッキ配線の回路パターンが予めレン
ズホルダーの外周面に施されているため、フレキシブル
配線基板を貼り付ける手数が省け、ホルダーにコイルが
直接実装できるため、作業が容易となる。 （３）フレキシブル配線基板の分だけレンズホルダーの
重量が軽くなるため、操作上の感度が上る。 （４）レンズホルダーに機械的な外力が加わらない。 （５）フレキシブル配線基板の厚み分だけ薄くなる。 （６）レンズホルダー内のヨークとのギャップが減るの
で、磁気特性がよくなる。As described above in detail, C according to the present invention
According to the configuration of the lens holder of the D pickup, the following effects can be obtained. (1) Print conductive material directly on the outer surface of the lens holder,
Alternatively, since the circuit pattern is formed by plating or the like, it is not necessary to use a high-priced flexible wiring board, and the cost can be reduced. (2) Since the circuit pattern of the printed or plated wiring is preliminarily applied to the outer peripheral surface of the lens holder, the number of steps for attaching the flexible wiring board can be saved, and the coil can be directly mounted on the holder, which facilitates the work. (3) Since the weight of the lens holder is reduced by the amount of the flexible wiring board, the operational sensitivity is increased. (4) No mechanical external force is applied to the lens holder. (5) The flexible wiring board is thinned by the thickness thereof. (6) Since the gap with the yoke in the lens holder is reduced, the magnetic characteristics are improved.
【図１】本発明の一実施例を示すＣＤピックアップのレ
ンズホルダーの斜視図である。FIG. 1 is a perspective view of a lens holder of a CD pickup showing an embodiment of the present invention.
【図２】フレキシブル配線基板に薄膜コイルを実装する
従来の実装構成図である。FIG. 2 is a conventional mounting configuration diagram in which a thin film coil is mounted on a flexible wiring board.
【図３】従来のＣＤピックアップのレンズホルダーの平
面図である。FIG. 3 is a plan view of a lens holder of a conventional CD pickup.
１ 型材 ２ フレキシブル配線基板 ３ フォーカッシング用薄膜コイル ４ トラッキング用薄膜コイル ５ 治具 ６ レンズホルダー ７ 対物レンズ ８ 支持軸 ９ 内ヨーク １０ 外ヨーク １１ マグネット １２ レンズホルダー ２１ 対物レンズ ２２ 回路パターン ２３ トラッキング用薄膜コイル ２４ フォーカッシング用薄膜コイル 1 Mold Material 2 Flexible Wiring Board 3 Thin Film Coil for Focusing 4 Thin Film Coil for Tracking 5 Jig 6 Lens Holder 7 Objective Lens 8 Support Shaft 9 Inner Yoke 10 Outer Yoke 11 Magnet 12 Lens Holder 21 Objective Lens 22 Circuit Pattern 23 Tracking Thin Film Coil 24 Thin film coil for focusing
Claims (2)
接印刷、またはメッキ等により形成し、この導電部材に
薄膜コイルが導通するように実装したことを特徴とする
ＣＤピックアップのレンズホルダー。1. A lens holder for a CD pickup, wherein a conductive member is directly printed or formed on the outer peripheral portion of the lens holder by plating or the like, and the thin film coil is mounted on the conductive member so as to conduct electricity.
ラーを入れた樹脂を用いて２色成形パターンを作り、そ
の上に銅メッキを施して回路パターンとする請求項１に
記載のＣＤピックアップのレンズホルダー。2. The CD pickup according to claim 1, wherein a two-color molding pattern is formed on the outer peripheral portion of the lens holder by using a resin containing a conductive filler, and copper is plated on the molding pattern to form a circuit pattern. Lens holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31755194A JPH08153334A (en) | 1994-11-28 | 1994-11-28 | Lens holder of cd pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31755194A JPH08153334A (en) | 1994-11-28 | 1994-11-28 | Lens holder of cd pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08153334A true JPH08153334A (en) | 1996-06-11 |
Family
ID=18089524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31755194A Pending JPH08153334A (en) | 1994-11-28 | 1994-11-28 | Lens holder of cd pickup |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08153334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7065774B2 (en) * | 2002-10-02 | 2006-06-20 | Samsung Electronics Co., Ltd. | Optical pickup actuator and optical disc drive using the same |
-
1994
- 1994-11-28 JP JP31755194A patent/JPH08153334A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7065774B2 (en) * | 2002-10-02 | 2006-06-20 | Samsung Electronics Co., Ltd. | Optical pickup actuator and optical disc drive using the same |
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