JPH0289627U - - Google Patents
Info
- Publication number
- JPH0289627U JPH0289627U JP16883288U JP16883288U JPH0289627U JP H0289627 U JPH0289627 U JP H0289627U JP 16883288 U JP16883288 U JP 16883288U JP 16883288 U JP16883288 U JP 16883288U JP H0289627 U JPH0289627 U JP H0289627U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- information recording
- optical path
- signal detection
- guided
- 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 20
- 238000001514 detection method Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005374 Kerr effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図ａは本考案の一実施例である光情報記録
再生装置の全体構成を示す説明図、第１図ｂはそ
の再生信号検出素子の正面図、第２図ａは本考案
の変形例である光情報記録再生装置の全体構成を
示す説明図、第２図ｂはその再生信号検出素子の
正面図、第３図ａは第一の従来例を示す説明図、
第３図ｂはその再生信号検出素子の正面図、第４
図は偏光波のλ／２板を透過前後におけるカー効
果の様子を示す説明図、第５図ａは第二の従来例
を示す説明図、第５図ｂはその再生信号検出素子
の正面図である。
１…半導体レーザ、７…光情報記録媒体、９…
ビームスプリツタ、１０…エラー信号検出光学系
、１１…再生信号検出光学系、２１…光路分離部
材、２２…全反射部材、２３…再生信号検出素子
、ｅ…第一受光面、ｆ…第二受光面。
FIG. 1a is an explanatory diagram showing the overall configuration of an optical information recording/reproducing apparatus which is an embodiment of the present invention, FIG. 1b is a front view of the reproduced signal detection element, and FIG. 2a is a modification of the present invention. An explanatory diagram showing the overall configuration of an optical information recording and reproducing apparatus, FIG. 2b is a front view of the reproduced signal detection element, and FIG.
Figure 3b is a front view of the reproduced signal detection element;
The figure is an explanatory diagram showing the Kerr effect before and after the polarized light passes through the λ/2 plate, Figure 5a is an explanatory diagram showing the second conventional example, and Figure 5b is a front view of the reproduced signal detection element. It is. 1... Semiconductor laser, 7... Optical information recording medium, 9...
Beam splitter, 10...Error signal detection optical system, 11...Reproduction signal detection optical system, 21...Optical path separation member, 22...Total reflection member, 23...Reproduction signal detection element, e...First light receiving surface, f...Second Light receiving surface.
Claims (1)
照射して情報の記録を行うと共に、その光情報記
録媒体からの反射光をビームスプリツタを介して
分離し、一方でエラー信号検出光学系に導きトラ
ツクエラー信号やフオーカスエラー信号を検出す
ると共に、他方で再生信号検出光学系に導き再生
信号を検出し情報の再生を行う光情報記録再生装
置において、前記光情報記録媒体からの反射光が
前記ビームスプリツタを介して前記再生信号検出
光学系に導かれた光路上に入射した光を分割する
光路分離部材を設け、この光路分離部材により分
離された一方の光の光路上に全反射部材を配設し
、この全反射部材に導かれ反射した光の光路上に
位置する第一受光面と前記光路分離部材のみを通
過した他方の光の光路上に位置する第二受光面と
を有する再生信号検出素子を設けたことを特徴と
する光情報記録再生装置。 Information is recorded by irradiating light emitted from a semiconductor laser onto an optical information recording medium, and the reflected light from the optical information recording medium is separated via a beam splitter, while being guided to an error signal detection optical system. In an optical information recording and reproducing apparatus that detects a track error signal and a focus error signal, and also detects a reproduced signal that is guided to a reproduced signal detection optical system and reproduces information, the reflected light from the optical information recording medium is An optical path separation member is provided to split the light incident on the optical path guided to the reproduction signal detection optical system via the beam splitter, and a total reflection member is provided on the optical path of one of the lights separated by the optical path separation member. and a second light receiving surface located on the optical path of the other light that has passed only through the optical path separation member. An optical information recording/reproducing device characterized by being provided with a signal detection element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16883288U JPH0289627U (en) | 1988-12-27 | 1988-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16883288U JPH0289627U (en) | 1988-12-27 | 1988-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0289627U true JPH0289627U (en) | 1990-07-16 |
Family
ID=31458356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16883288U Pending JPH0289627U (en) | 1988-12-27 | 1988-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0289627U (en) |
-
1988
- 1988-12-27 JP JP16883288U patent/JPH0289627U/ja active Pending
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