JPH01159213U - - Google Patents
Info
- Publication number
- JPH01159213U JPH01159213U JP8556188U JP8556188U JPH01159213U JP H01159213 U JPH01159213 U JP H01159213U JP 8556188 U JP8556188 U JP 8556188U JP 8556188 U JP8556188 U JP 8556188U JP H01159213 U JPH01159213 U JP H01159213U
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical system
- optical
- information recording
- semiconductor
- 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 15
- 239000004065 semiconductor Substances 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000010287 polarization Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
Description
第１図は本考案の第一の実施例を示す平面図、
第２図及び第３図はその第二光学系における光の
トラツク方向、フオーカス方向への調整方法を示
す説明図、第４図は本考案の第二の実施例を示す
平面図、第５図は従来例を示す平面図、第６図は
光デイスクのトラツク上でのスポツト形状を示す
説明図、第７図は半導体レーザが出射方向に位置
ズレした場合の様子を示す説明図、第８図は半導
体レーザが出射方向と直角方向に位置ズレした場
合の様子を示す説明図である。
１……半導体レーザ、２……カツプリングレン
ズ、３……偏光ビームスプリツタ、５……対物レ
ンズ、６……光情報記録媒体、７……第一光学系
、１０……サーボ光学系、１１……トラツク受光
素子、１２……フオーカス受光素子、１４……第
二光学系、２０……半導体レーザ、Ａ０，Ｂ０…
…出射点。
FIG. 1 is a plan view showing the first embodiment of the present invention;
2 and 3 are explanatory diagrams showing the method of adjusting the light in the track direction and focus direction in the second optical system, FIG. 4 is a plan view showing the second embodiment of the present invention, and FIG. 5 6 is a plan view showing a conventional example, FIG. 6 is an explanatory view showing the shape of a spot on the track of an optical disk, FIG. 7 is an explanatory view showing the situation when the semiconductor laser is misaligned in the emission direction, and FIG. FIG. 2 is an explanatory diagram showing a situation where the semiconductor laser is misaligned in a direction perpendicular to the emission direction. DESCRIPTION OF SYMBOLS 1... Semiconductor laser, 2... Coupling lens, 3... Polarizing beam splitter, 5... Objective lens, 6... Optical information recording medium, 7... First optical system, 10... Servo optical system, DESCRIPTION OF SYMBOLS 11...Track light receiving element, 12...Focus light receiving element, 14...Second optical system, 20...Semiconductor laser, A0 , B0 ...
...Emission point.
Claims (1)
のうち一つの出射点から出射された第一光を第一
光学系における偏光ビームスプリツタを介して、
光情報記録媒体に照射し情報の記録を行い、前記
第一光と異なる出射点から出射され前記光情報記
録媒体により反射された第二光をサーボ光学系に
導きトラツク受光素子及びフオーカス受光素子に
照射することにより、トラツキングサーボやフオ
ーカスサーボを行うと共に情報の再生を行う光情
報記録再生装置において、前記第一光と前記第二
光とを互いに異なる偏光面をもたせた状態で出射
する半導体レーザを設け、この半導体レーザによ
り出射された前記第二光を導くと共に、その導か
れた前記第二光を調整手段により前記第一光学系
と独立して調整する第二光学系を、前記第一光学
系に近接して設けたことを特徴とする光ピツクア
ツプ装置。 The first light emitted from one of the plurality of light emitting points of the semiconductor laser is passed through a polarizing beam splitter in the first optical system.
The optical information recording medium is irradiated to record information, and a second light emitted from a different emission point from the first light and reflected by the optical information recording medium is guided to a servo optical system and sent to a track light receiving element and a focus light receiving element. A semiconductor that emits the first light and the second light with different polarization planes in an optical information recording and reproducing device that performs tracking servo or focus servo and also reproduces information by irradiating the semiconductor. A second optical system is provided with a laser, guides the second light emitted by the semiconductor laser, and adjusts the guided second light independently of the first optical system by an adjusting means. An optical pickup device characterized in that it is provided close to an optical system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8556188U JPH01159213U (en) | 1987-12-11 | 1988-06-28 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18830287 | 1987-12-11 | ||
| JP8556188U JPH01159213U (en) | 1987-12-11 | 1988-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159213U true JPH01159213U (en) | 1989-11-02 |
Family
ID=31718596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8556188U Pending JPH01159213U (en) | 1987-12-11 | 1988-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159213U (en) |
-
1988
- 1988-06-28 JP JP8556188U patent/JPH01159213U/ja active Pending
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