JPS6161621U - - Google Patents
Info
- Publication number
- JPS6161621U JPS6161621U JP14469984U JP14469984U JPS6161621U JP S6161621 U JPS6161621 U JP S6161621U JP 14469984 U JP14469984 U JP 14469984U JP 14469984 U JP14469984 U JP 14469984U JP S6161621 U JPS6161621 U JP S6161621U
- Authority
- JP
- Japan
- Prior art keywords
- information recording
- signal
- light
- differential amplifier
- light beam
- 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 6
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の光学系の構成を示す正面図、
第２図はそのブロツク図、第３図は従来の光学系
の構成を示す正面図である。
１０…デイスク、２０…ピツクアツプ、２１…
光源、２２…ビームスプリツタ、２３…対物レン
ズ、２４，３２，３３…受光素子、３１…発光ダ
イオード、３４，４３…差動増幅器、４０，４１
…加算器、４２…加算増幅器、４４…角度調整手
段。
Figure 1 is a front view showing the configuration of the optical system of the present invention;
FIG. 2 is a block diagram thereof, and FIG. 3 is a front view showing the configuration of a conventional optical system. 10...disk, 20...pickup, 21...
Light source, 22... Beam splitter, 23... Objective lens, 24, 32, 33... Light receiving element, 31... Light emitting diode, 34, 43... Differential amplifier, 40, 41
...Adder, 42...Summing amplifier, 44...Angle adjustment means.
Claims (1)
源と、該光源から発せられた該光線を情報記録円
盤に照射させる手段と、該情報記録円盤を経た該
光線を受光して該情報記録円盤に記録再生される
情報に関する信号を出力する受光素子と、該情報
記録円盤に形成されたトラツクと平行な方向の分
割線で少なくとも２つに分割された２つの該受光
素子の出力の差信号を得る差動増幅器と、該差動
増幅器からの信号に対応して該情報記録円盤に対
する該光線の光軸の傾きを調整する角度調整手段
とを備えることを特徴とする光学的情報記録再生
装置。 (2) 該角度調整手段は該差動増幅器の信号から
トラツキングエラー成分を減算する手段を含むこ
とを特徴とする実用新案登録請求の範囲第１項記
載の光学的情報記録再生装置。 (3) 該角度調整手段は該差動増幅器のうちトラ
ツキングエラー信号より低い周波数の信号のみを
通過させるフイルタを有することを特徴とする実
用新案登録請求の範囲第１項記載の光学的情報記
録再生装置。[Scope of Claim for Utility Model Registration] (1) A light source that emits a light beam for recording and reproducing information, a means for irradiating the information recording disk with the light beam emitted from the light source, and the light beam that passes through the information recording disk. a light-receiving element that receives light and outputs a signal related to information to be recorded and reproduced on the information recording disk; It is characterized by comprising a differential amplifier that obtains a difference signal between the outputs of the light receiving elements, and an angle adjustment means that adjusts the inclination of the optical axis of the light beam with respect to the information recording disk in response to the signal from the differential amplifier. Optical information recording and reproducing device. (2) The optical information recording and reproducing apparatus according to claim 1, wherein the angle adjusting means includes means for subtracting a tracking error component from the signal of the differential amplifier. (3) The optical information recording device according to claim 1, wherein the angle adjusting means includes a filter that passes only a signal having a lower frequency than the tracking error signal from the differential amplifier. playback device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14469984U JPS6161621U (en) | 1984-09-25 | 1984-09-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14469984U JPS6161621U (en) | 1984-09-25 | 1984-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6161621U true JPS6161621U (en) | 1986-04-25 |
Family
ID=30702966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14469984U Pending JPS6161621U (en) | 1984-09-25 | 1984-09-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6161621U (en) |
-
1984
- 1984-09-25 JP JP14469984U patent/JPS6161621U/ja active Pending
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