JPS6148427U - - Google Patents
Info
- Publication number
- JPS6148427U JPS6148427U JP13144684U JP13144684U JPS6148427U JP S6148427 U JPS6148427 U JP S6148427U JP 13144684 U JP13144684 U JP 13144684U JP 13144684 U JP13144684 U JP 13144684U JP S6148427 U JPS6148427 U JP S6148427U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- optical pickup
- light beam
- movable part
- light
- 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 7
- 239000003973 paint Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図及び第２図は本考案の一実施例を示す図
であり、第１図は説明を兼ねる構造図、第２図は
可動部をプリズムミラー側から見た平面図、第３
図及び第４図は本考案のそれぞれ異なる他の実施
例に使用する可動部をプリズムミラー側から見た
平面図、第５図及び第６図は従来例を示す図であ
り、第５図は説明を兼ねる構造図、第６図は可動
部をプリズムミラー側から見た平面図である。
１…光源、２…偏向ビームスリツタ、３…コリ
メートレンズ、４…１／４波長板、５…プリズム
ミラー、６…対物レンズ、７…情報記録担体、８
…凹レンズ、９…円筒レンズ、１０…光信号検出
器、１１…可動部、１２…主軸、１３１，１３２
…光束、１４…反射光、１５…サーボ増幅回路、
１６…駆動回路、２１…黒色アルマイト処理面、
２２…ローレツト加工による粗面、２３…黒色塗
料による無光沢面。
1 and 2 are diagrams showing one embodiment of the present invention, in which FIG. 1 is a structural diagram that also serves as an explanation, FIG. 2 is a plan view of the movable part seen from the prism mirror side, and FIG.
5 and 4 are plan views of movable parts used in other different embodiments of the present invention, viewed from the prism mirror side, and FIGS. 5 and 6 are views showing conventional examples. FIG. 6, which is a structural diagram for explanation, is a plan view of the movable part viewed from the prism mirror side. DESCRIPTION OF SYMBOLS 1... Light source, 2... Deflection beam slitter, 3... Collimating lens, 4... 1/4 wavelength plate, 5... Prism mirror, 6... Objective lens, 7... Information recording carrier, 8
...Concave lens, 9...Cylindrical lens, 10...Optical signal detector, 11...Movable part, 12...Main shaft, 13 1 , 13 2
...Light flux, 14...Reflected light, 15...Servo amplifier circuit,
16... Drive circuit, 21... Black alumite treated surface,
22... Rough surface by knurling, 23... Matte surface by black paint.
Claims (1)
体の記録面へ焦点を結ぶ対物レンズを含む光学系
と、前記対物レンズを前記情報記録担体のフオー
カス方向及びトラツキング方向に駆動する可動部
とを少くとも具備する光ピツクアツプヘツドにお
いて、前記可動部のうち前記対物レンズを除く前
記光学系からの光束が照射される位置に反射防止
手段を設けてなることを特徴とする光ピツクアツ
プヘツド。 (2) 反射防止手段が黒色アルマイト処理面であ
ることを特徴とする実用新案登録請求の範囲第１
項記載の光ピツクアツプヘツド。 (3) 反射防止手段が粗面であることを特徴とす
る実用新案登録請求の範囲第１項記載の光ピツク
アツプヘツド。 (4) 反射防止手段が黒色塗料による無光沢面で
あることを特徴とする実用新案登録請求の範囲第
１項記載の光ピツクアツプヘツド。[Claims for Utility Model Registration] (1) An optical system including a light source, an objective lens that focuses the light beam from the light source onto the recording surface of the information record carrier, and a light source that focuses the light beam from the light source onto the recording surface of the information record carrier. An optical pickup head comprising at least a movable part that is driven in a tracking direction, characterized in that anti-reflection means is provided at a position of the movable part that is irradiated with the light beam from the optical system, excluding the objective lens. Light pick up head. (2) Utility model registration claim 1, characterized in that the anti-reflection means is a black alumite treated surface
Optical pick-up head as described in Section 1. (3) The optical pickup head according to claim 1, wherein the antireflection means has a rough surface. (4) The optical pickup head according to claim 1, wherein the antireflection means is a matte surface coated with black paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13144684U JPS6148427U (en) | 1984-08-31 | 1984-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13144684U JPS6148427U (en) | 1984-08-31 | 1984-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6148427U true JPS6148427U (en) | 1986-04-01 |
Family
ID=30690036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13144684U Pending JPS6148427U (en) | 1984-08-31 | 1984-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6148427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1031838A (en) * | 1996-04-18 | 1998-02-03 | Samsung Electron Co Ltd | Laser diode package having light output monitoring function |
-
1984
- 1984-08-31 JP JP13144684U patent/JPS6148427U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1031838A (en) * | 1996-04-18 | 1998-02-03 | Samsung Electron Co Ltd | Laser diode package having light output monitoring function |
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