JPS5999222U - optical pickup device - Google Patents
optical pickup deviceInfo
- Publication number
- JPS5999222U JPS5999222U JP19276582U JP19276582U JPS5999222U JP S5999222 U JPS5999222 U JP S5999222U JP 19276582 U JP19276582 U JP 19276582U JP 19276582 U JP19276582 U JP 19276582U JP S5999222 U JPS5999222 U JP S5999222U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- light
- detection
- receiving element
- pickup device
- 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
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図は一般的な光ピツクアップ装置における基本的な
光学系の一構成例を示す図、第２図ａ。
ｂ、 ｃは従来のフーコ法によるフォーカス検出の原
理を説明するための光学系統図、第３図ａ、 ｂ。
Ｃは従来のトラッキング検出の原理を説明するための光
学系統図、第４図ｉは本考案の一実施例におけるフォー
カスおよびトラッキング検出用の光学系を示す図、第４
図すは同図ａの平面図、第５図は一般的なフーコ法によ
るフォーカス検出用の光学系統図、第６図、第７図およ
び第８図はミラーを用いて光束を折曲させてフォーカス
検出を行なわせるようにした光学系統の構成例をそれぞ
れ示す図である。
１・・・半導体レーザ、３・・・１／４波長板、４・・
ゼームスプリツタ、５・・・対物レンズ、６・・・光デ
ィスク、７・・・光電変換素子、８・・・集光レンズ、
９・・・ナイフェツジ、１０．１１，１２．１３．１５
・・・受光素子、１４・・・ミラー、１６・・・ダハ・
ミラー。
第５図FIG. 1 is a diagram showing an example of the configuration of a basic optical system in a general optical pickup device, and FIG. 2a is a diagram showing an example of the configuration of a basic optical system in a general optical pickup device. b, c are optical system diagrams for explaining the principle of focus detection using the conventional Foucault method; Fig. 3 a, b. C is an optical system diagram for explaining the principle of conventional tracking detection; FIG. 4i is a diagram showing an optical system for focus and tracking detection in an embodiment of the present invention;
The figure is a plan view of figure a, Figure 5 is an optical system diagram for focus detection using the general Foucault method, and Figures 6, 7, and 8 are for bending the light beam using mirrors. FIG. 3 is a diagram illustrating an example of the configuration of an optical system that performs focus detection. 1... Semiconductor laser, 3... 1/4 wavelength plate, 4...
Zem splitter, 5... Objective lens, 6... Optical disk, 7... Photoelectric conversion element, 8... Condenser lens,
9... Naifetsuji, 10.11, 12.13.15
...light receiving element, 14... mirror, 16... roof
mirror. Figure 5
Claims (1)
ットを照射したときの反射光を光電変換素子により受光
してその情報を読み取る光学系内に、フーコ法によるフ
ォーカス検出用の光学系およびトラッキング検出用の光
学系を組み込んだものにおいて、それら各検出用の光学
系として、集光レンズを通した光デイスク面から反射光
の一部をしゃ断させるようにトラッキング検出用の受光
素子を配設するとともに、その背面にフォーカス検出用
の受光素子を一体に設け、集光レンズを通した残りの光
束をミラーにより折曲させてフォーカス検出用の受光素
子上に集光させるようにしたことを特徴とする光ピツク
アップ装置。An optical system for focus detection using the Foucault method and an optical system for tracking detection are included in the optical system that uses a photoelectric conversion element to receive the reflected light when a spot is irradiated onto the optical disk surface where information is recorded by pits and read the information. In the optical system for each detection, a light receiving element for tracking detection is arranged so as to block a part of the light reflected from the optical disk surface through a condensing lens, and A light receiving element for focus detection is integrally provided on the back surface of the light, and the remaining light beam that passes through the condenser lens is bent by a mirror and focused onto the light receiving element for focus detection. Pickup device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19276582U JPS5999222U (en) | 1982-12-20 | 1982-12-20 | optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19276582U JPS5999222U (en) | 1982-12-20 | 1982-12-20 | optical pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5999222U true JPS5999222U (en) | 1984-07-05 |
Family
ID=30414760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19276582U Pending JPS5999222U (en) | 1982-12-20 | 1982-12-20 | optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5999222U (en) |
-
1982
- 1982-12-20 JP JP19276582U patent/JPS5999222U/en active Pending
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