JPS61114525U - - Google Patents
Info
- Publication number
- JPS61114525U JPS61114525U JP20150184U JP20150184U JPS61114525U JP S61114525 U JPS61114525 U JP S61114525U JP 20150184 U JP20150184 U JP 20150184U JP 20150184 U JP20150184 U JP 20150184U JP S61114525 U JPS61114525 U JP S61114525U
- Authority
- JP
- Japan
- Prior art keywords
- lens holder
- base body
- coils
- direction changer
- magnet
- 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
- 230000003287 optical effect Effects 0.000 claims description 5
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Optical Recording Or Reproduction (AREA)
Description
第１図、第２図及び第５図は本考案に係る光学
的情報読取装置の一実施例を示す斜視図、平面図
、分解斜視図、第３図及び第４図は第２図を―
′線及び―′線にて切断して視た断面図で
ある。
４：発光器、５：レーザー光源、１２：受光素
子、１３：ベース体、１４：支点軸、１６：ミラ
ー、１７：レンズ保持体、２２：対物レンズ、２
９ａ，２９ｂ：コイルボビン、３０ａ，３０ｂ：
フオーカス動作用コイル、３１ａ，３１ｂ：トラ
ツキング動作用コイル、３２ａ，３２ｂ：外側ヨ
ーク、３３ａ，３３ｂ：マグネツト、３４ａ，３
４ｂ：内側ヨーク。
1, 2, and 5 are perspective views, plan views, and exploded perspective views showing one embodiment of the optical information reading device according to the present invention, and FIGS. 3 and 4 are the same as FIG. 2.
FIG. 4: Light emitter, 5: Laser light source, 12: Light receiving element, 13: Base body, 14: Fulcrum shaft, 16: Mirror, 17: Lens holder, 22: Objective lens, 2
9a, 29b: coil bobbin, 30a, 30b:
Focusing coil, 31a, 31b: Tracking coil, 32a, 32b: Outer yoke, 33a, 33b: Magnet, 34a, 3
4b: Inner yoke.
Claims (1)
に設けた支点軸を以つて所定の範囲内で上下動と
回動ができるように設けると共に上記レンズ保持
体の周縁下方の上記ベース体上に光学ユニツトか
らのレーザー光束を上記対物レンズ方向に方向変
換させる方向変換器を設け、かつ、 上記支点軸を挾む対称の位置で、しかも、上記
光学ユニツトと方向変換器との間の光路を遮ぎる
ことのない位置の上記レンズ保持体の下面に一対
のコイルボビンを夫々固着し、かつ、 これらコイルボビンの外周に夫々上記ベース体
上に設けられたマグネツト及びヨークと共にフオ
ーカス動作用の磁気回路を形成するフオーカス動
作用コイルを巻着すると共にこれらフオーカス動
作用コイルの外周に上記マグネツト及びヨークと
共にトラツキング動作用の磁気回路を形成するト
ラツキング動作用コイルを夫々固着した事を特徴
とする光学的情報読取装置。[Scope of Claim for Utility Model Registration] A lens holder provided with an objective lens is provided so as to be able to move up and down and rotate within a predetermined range using a fulcrum shaft provided on a base body, and the periphery of the lens holder is provided. A direction changer for changing the direction of the laser beam from the optical unit toward the objective lens is provided on the base body below, and the direction changer is located at a symmetrical position across the fulcrum axis, and is connected to the optical unit and the direction changer. A pair of coil bobbins is fixed to the lower surface of the lens holder at a position that does not block the optical path between the lens holder and the lens holder, and a focus movement is provided on the outer periphery of each coil bobbin together with a magnet and a yoke respectively provided on the base body. The invention is characterized in that coils for focus operation forming a magnetic circuit for the purpose of the invention are wound, and tracking operation coils for forming a magnetic circuit for tracking operation together with the magnet and yoke are fixed to the outer peripheries of these focus operation coils. optical information reading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150184U JPS61114525U (en) | 1984-12-27 | 1984-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20150184U JPS61114525U (en) | 1984-12-27 | 1984-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61114525U true JPS61114525U (en) | 1986-07-19 |
Family
ID=30763353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20150184U Pending JPS61114525U (en) | 1984-12-27 | 1984-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01224932A (en) * | 1988-03-04 | 1989-09-07 | Mitsubishi Electric Corp | Optical pickup device |
-
1984
- 1984-12-27 JP JP20150184U patent/JPS61114525U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01224932A (en) * | 1988-03-04 | 1989-09-07 | Mitsubishi Electric Corp | Optical pickup device |
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