JPH02113820U - - Google Patents
Info
- Publication number
- JPH02113820U JPH02113820U JP2036889U JP2036889U JPH02113820U JP H02113820 U JPH02113820 U JP H02113820U JP 2036889 U JP2036889 U JP 2036889U JP 2036889 U JP2036889 U JP 2036889U JP H02113820 U JPH02113820 U JP H02113820U
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- light
- optical pickup
- reproduction
- recording
- 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 7
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Optical Head (AREA)
Description
第１図は本考案の一実施例を示す概略構成図、
第２図は第１図の実施例を説明する説明図、第３
図は他の実施例を示す概略構成図である。
１……記録用光ビーム、４……再生用光ビーム
、９，１３……波長選択フイルタ。
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Figure 2 is an explanatory diagram for explaining the embodiment of Figure 1;
The figure is a schematic configuration diagram showing another embodiment. 1... Light beam for recording, 4... Light beam for reproduction, 9, 13... Wavelength selection filter.
Claims (1)
ビームを有し、この２つの光ビームを情報記録担
体にビームスポツトとして照射し、照射後の反射
戻り光から信号を検出するための光検出器を具備
した光ピツクアツプにおいて、前記反射戻り光路
に直交して可動で、前記第１の光ビームを遮断す
る波長選択フイルタを配設したことを特徴とする
２ビーム方式の光ピツクアツプ。 (2) 前記第１の光ビームが記録用に、前記第２
の光ビームが再生用に用いられたことを特徴とす
る請求項(1)記載の２ビーム方式の光ピツクアツ
プ。 (3) 前記第１の光ビームが消去用に、前記第２
の光ビームが記録、再生用に用いられたことを特
徴とする請求項(1)記載の２ビーム方式の光ピツ
クアツプ。 (4) 前記反射戻り光路に前記波長選択フイルタ
を複数個を用い、そのうちの一部を光束と直交す
る方向に移動可能としたことを特徴とする請求項
(1)記載の２ビーム方式の光ピツクアツプ。[Claims for Utility Model Registration] (1) It has a first light beam and a second light beam with different wavelengths, and these two light beams are irradiated onto an information recording carrier as a beam spot, and reflected after irradiation. An optical pickup equipped with a photodetector for detecting a signal from returned light, characterized in that a wavelength selection filter is provided that is movable orthogonally to the reflected return optical path and blocks the first light beam. A two-beam optical pick-up. (2) The first light beam is connected to the second light beam for recording.
2. The two-beam optical pickup according to claim 1, wherein said light beam is used for reproduction. (3) The first light beam is connected to the second light beam for erasing.
2. A two-beam optical pickup according to claim 1, wherein said light beam is used for recording and reproduction. (4) A plurality of the wavelength selection filters are used in the reflection return optical path, and some of them are movable in a direction perpendicular to the light beam.
(1) Two-beam optical pickup described in (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2036889U JPH02113820U (en) | 1989-02-23 | 1989-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2036889U JPH02113820U (en) | 1989-02-23 | 1989-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113820U true JPH02113820U (en) | 1990-09-12 |
Family
ID=31236682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2036889U Pending JPH02113820U (en) | 1989-02-23 | 1989-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113820U (en) |
-
1989
- 1989-02-23 JP JP2036889U patent/JPH02113820U/ja active Pending
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