JPH0481225U - - Google Patents
Info
- Publication number
- JPH0481225U JPH0481225U JP12620590U JP12620590U JPH0481225U JP H0481225 U JPH0481225 U JP H0481225U JP 12620590 U JP12620590 U JP 12620590U JP 12620590 U JP12620590 U JP 12620590U JP H0481225 U JPH0481225 U JP H0481225U
- Authority
- JP
- Japan
- Prior art keywords
- light
- condenser lens
- optical disk
- incident
- angle
- 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 9
- 238000010586 diagram Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Description
第1図は本考案の第1実施例の模式的な平面図
、第2図はその一部の拡大図、第3図は本考案の
第2実施例の模式的な平面図、第4図は本考案が
適用される光デイスク装置の模式的な斜視構成図
である。
1……レーザ光源、2……コリメータレンズ、
3……ビーム整形プリズム、4……主ビームスプ
リツタ、4a,4b……半透過膜、5……ミラー
、6……対物レンズ、7……光デイスク、8……
集光レンズ、9……APCセンサ、10……1/2
波長板、11……副ビームスプリツタ、12,1
3……集光レンズ、14,15……データセンサ
、16……集光レンズ、17……シリンドリカル
レンズ、18……サーボセンサ。
Fig. 1 is a schematic plan view of the first embodiment of the present invention, Fig. 2 is an enlarged view of a part thereof, Fig. 3 is a schematic plan view of the second embodiment of the present invention, and Fig. 4 1 is a schematic perspective configuration diagram of an optical disk device to which the present invention is applied. 1... Laser light source, 2... Collimator lens,
3...Beam shaping prism, 4...Main beam splitter, 4a, 4b...Semi-transparent film, 5...Mirror, 6...Objective lens, 7...Optical disk, 8...
Condensing lens, 9...APC sensor, 10...1/2
Wave plate, 11...Sub beam splitter, 12, 1
3... Condensing lens, 14, 15... Data sensor, 16... Condensing lens, 17... Cylindrical lens, 18... Servo sensor.
Claims (1)
、この分割光を集光レンズで集光させて光センサ
に入射させ、この光センサの検出値に基づいて前
記レーザ光源の出力を制御するように構成した光
デイスク装置において、前記集光レンズの入射面
と光センサの受光面を、集光レンズに入射される
光の光軸に対して所要の角度傾斜させたことを特
徴とする光デイスク装置。 2 傾斜角θと、集光レンズによつて集光される
光の集光角の半角αとの間に、θ>αの関係が存
在する実用新案登録請求の範囲第1項記載の光デ
イスク装置。[Claims for Utility Model Registration] 1. Part of the light emitted from the laser light source is divided, the divided light is focused by a condensing lens, and is incident on an optical sensor, and based on the detected value of this optical sensor. In the optical disk device configured to control the output of the laser light source, the incident surface of the condenser lens and the light receiving surface of the optical sensor are tilted at a required angle with respect to the optical axis of light incident on the condenser lens. An optical disk device characterized by: 2. The optical disk according to claim 1 of the utility model registration, in which the relationship θ>α exists between the tilt angle θ and the half angle α of the convergence angle of the light condensed by the condenser lens. Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12620590U JPH0481225U (en) | 1990-11-28 | 1990-11-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12620590U JPH0481225U (en) | 1990-11-28 | 1990-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0481225U true JPH0481225U (en) | 1992-07-15 |
Family
ID=31873771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12620590U Pending JPH0481225U (en) | 1990-11-28 | 1990-11-28 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0481225U (en) |
-
1990
- 1990-11-28 JP JP12620590U patent/JPH0481225U/ja active Pending
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