JPS62187421U - - Google Patents
Info
- Publication number
- JPS62187421U JPS62187421U JP7554386U JP7554386U JPS62187421U JP S62187421 U JPS62187421 U JP S62187421U JP 7554386 U JP7554386 U JP 7554386U JP 7554386 U JP7554386 U JP 7554386U JP S62187421 U JPS62187421 U JP S62187421U
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- beam splitter
- reflection mirror
- signal
- notch
- 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 4
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図は本考案に係る光ピツクアツプの光学構
成の斜視図、第２図はハーフミラーの切欠部の異
なる形状を示す図、第３図及び第４図はハーフミ
ラーの切欠部を形成する方法を示す図、第５図は
従来の光ピツクアツプの構成を示す図である。
１はハーフミラー（ビームスプリツタ）、１ｂ
，１ｄ，１ｅ，１ｆは切欠部、２は半導体レーザ
、３は回折格子、５は対物レンズ、６はデイスク
、７は検出レンズ、８は受光素子、９は反射ミラ
ー。
Fig. 1 is a perspective view of the optical configuration of the optical pickup according to the present invention, Fig. 2 is a diagram showing different shapes of the notch of the half mirror, and Figs. 3 and 4 are methods for forming the notch of the half mirror. FIG. 5 is a diagram showing the configuration of a conventional optical pickup. 1 is a half mirror (beam splitter), 1b
, 1d, 1e, and 1f are notches, 2 is a semiconductor laser, 3 is a diffraction grating, 5 is an objective lens, 6 is a disk, 7 is a detection lens, 8 is a light receiving element, and 9 is a reflecting mirror.
Claims (1)
で反射せしめた後、反射ミラーによつて対物レン
ズへ導き、記録媒体上に信号を記録、若しくは記
録媒体上に記録された信号を再生する構成の光ピ
ツクアツプにおいて、前記反射ミラーと交叉する
部分の前記ビームスプリツタに対して、前記反射
ミラーの当接を回避する如き切欠部が設けられて
いることを特徴とする光ピツクアツプ装置。 A light beam configured to reflect a laser beam by a parallel plane plate-shaped beam splitter and then guide it to an objective lens by a reflecting mirror to record a signal on a recording medium or reproduce a signal recorded on a recording medium. An optical pickup device characterized in that, in a pickup, a notch is provided in a portion of the beam splitter that intersects with the reflection mirror to avoid contact with the reflection mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7554386U JPS62187421U (en) | 1986-05-20 | 1986-05-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7554386U JPS62187421U (en) | 1986-05-20 | 1986-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62187421U true JPS62187421U (en) | 1987-11-28 |
Family
ID=30921781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7554386U Pending JPS62187421U (en) | 1986-05-20 | 1986-05-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62187421U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58215739A (en) * | 1982-06-08 | 1983-12-15 | Hitachi Ltd | Pickup for optical information reproducer |
| JPS59178635A (en) * | 1983-03-29 | 1984-10-09 | Victor Co Of Japan Ltd | Optical recording device |
| JPS59215034A (en) * | 1983-05-19 | 1984-12-04 | Brother Ind Ltd | Recording and reproducing device |
-
1986
- 1986-05-20 JP JP7554386U patent/JPS62187421U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58215739A (en) * | 1982-06-08 | 1983-12-15 | Hitachi Ltd | Pickup for optical information reproducer |
| JPS59178635A (en) * | 1983-03-29 | 1984-10-09 | Victor Co Of Japan Ltd | Optical recording device |
| JPS59215034A (en) * | 1983-05-19 | 1984-12-04 | Brother Ind Ltd | Recording and reproducing device |
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