JPS60173121U - Pickup device for optical information reading device - Google Patents
Pickup device for optical information reading deviceInfo
- Publication number
- JPS60173121U JPS60173121U JP5971784U JP5971784U JPS60173121U JP S60173121 U JPS60173121 U JP S60173121U JP 5971784 U JP5971784 U JP 5971784U JP 5971784 U JP5971784 U JP 5971784U JP S60173121 U JPS60173121 U JP S60173121U
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- receiving element
- light
- lens
- optical information
- 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
Landscapes
- Optical Head (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図ａないしＣは従来のピックアップ装置を示す図、
第２図ａは本考案に係るピックアップ装置の要部を示す
図、第２図す及びＣは該ピックアップ装置の一部詳細図
、第３図ａないしＣ並びに第４図は該ピックアップ装置
の一部変形例を示す図である。
主要部分の符号の説明、１・・・・・・半導体レーザ、
２・・・・・・コリメータレンズ、３・・・・・・偏光
ビームスプリッタ、４・・・・・・１／４波呆板、空・
・・・・・対物レンズ、６・・・・・・ディスク、９・
・・・・・全反射ミラー、２１・・・・・・凸レンズ、
６・・・・・・ディスク、９・・・・・・全反射ミラー
、２１・・・・・・凸レンズ、２２・・・・・・シリン
ドリカルレンズ、２３・・・・・・非分割受光素子、２
４・・・・・・４分割受光素子。FIGS. 1A to 1C are diagrams showing a conventional pickup device;
FIG. 2a is a diagram showing the main parts of the pickup device according to the present invention, FIGS. 2A and 2C are partial detailed views of the pickup device, and FIGS. It is a figure which shows the example of a part modification. Explanation of symbols of main parts, 1... Semiconductor laser,
2...Collimator lens, 3...Polarizing beam splitter, 4...1/4 wave drop plate, sky...
...Objective lens, 6...Disk, 9.
... Total reflection mirror, 21 ... Convex lens,
6... Disc, 9... Total reflection mirror, 21... Convex lens, 22... Cylindrical lens, 23... Non-divided light receiving element ,2
4...Four division light receiving element.
Claims (1)
手段の受光面に集束せしめて再生ＲＦ信号、フォーカス
エラー信号及び叶ラッキングエラー信号の３信号を“得
るためのレンズ機構とを含み、前記受光手段は前記３信
号を得る４分割受光素子と、前記４分割受光素子と協働
して前記再生ＲＦ信号を得る非分割受光素子とから成り
、前記レンズ機構は互いに近接して設けられて前記反射
光を集束せしめる凸レンズ及びシリンドリカルレンズと
、前記凸レンズ及びシリンドリカルレンズにより得られ
た集束光を分離して前記４分割受光゛ 素子及び非分
割受光素子に供給する反射ミラーとを有することを特徴
とする光学式情報読取装置におけるピックアップ装置。a lens mechanism for focusing reflected light from a recording surface of a recording medium onto a light-receiving surface of the light-receiving means to obtain three signals: a reproduction RF signal, a focus error signal, and a racking error signal; The light receiving means includes a four-split light receiving element that obtains the three signals, and a non-divided light receiving element that cooperates with the four-split light receiving element to obtain the reproduced RF signal, and the lens mechanisms are provided close to each other. It is characterized by comprising a convex lens and a cylindrical lens that focus the reflected light, and a reflecting mirror that separates the focused light obtained by the convex lens and the cylindrical lens and supplies it to the four-divided light receiving element and the non-divided light receiving element. A pickup device in an optical information reading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5971784U JPS60173121U (en) | 1984-04-23 | 1984-04-23 | Pickup device for optical information reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5971784U JPS60173121U (en) | 1984-04-23 | 1984-04-23 | Pickup device for optical information reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60173121U true JPS60173121U (en) | 1985-11-16 |
Family
ID=30586395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5971784U Pending JPS60173121U (en) | 1984-04-23 | 1984-04-23 | Pickup device for optical information reading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60173121U (en) |
-
1984
- 1984-04-23 JP JP5971784U patent/JPS60173121U/en active Pending
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