JPS62175425U - - Google Patents
Info
- Publication number
- JPS62175425U JPS62175425U JP6239186U JP6239186U JPS62175425U JP S62175425 U JPS62175425 U JP S62175425U JP 6239186 U JP6239186 U JP 6239186U JP 6239186 U JP6239186 U JP 6239186U JP S62175425 U JPS62175425 U JP S62175425U
- Authority
- JP
- Japan
- Prior art keywords
- beam splitter
- optical pickup
- objective lens
- guides
- light source
- 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 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案の一実施例を示す構成図、第２
図は従来のピツクアツプ構成図、第３図は従来の
光ピツクアツプの回折格子の調整による影響を説
明する図、第４図は従来の光ピツクアツプのプリ
ズム形ピツクアツプに回折格子を設けたときの説
明図、第５図は本考案によるプレート形ビームス
プリツタに回折格子を設けたときの説明図である
。
１…半導体レーザ、２…回折格子、３…ビーム
スプリツタ、４…コリメータレンズ、５…対物レ
ンズ、６…デイスク、７…シリンダレンズ、８…
ＰＤ、９…プレート形ビームスプリツタ、１１…
回折格子面、１２…本体。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
Figure 3 is a diagram illustrating the configuration of a conventional optical pickup; Figure 3 is a diagram illustrating the effects of adjusting the diffraction grating of a conventional optical pickup; Figure 4 is an illustration of a conventional optical pickup with a diffraction grating installed in a prismatic pickup. , FIG. 5 is an explanatory diagram of a plate beam splitter according to the present invention provided with a diffraction grating. DESCRIPTION OF SYMBOLS 1... Semiconductor laser, 2... Diffraction grating, 3... Beam splitter, 4... Collimator lens, 5... Objective lens, 6... Disk, 7... Cylinder lens, 8...
PD, 9...Plate beam splitter, 11...
Diffraction grating surface, 12...main body.
Claims (1)
タ及び対物レンズを介してデイスクのトラツクに
導き、そこでの反射ビームを前記対物レンズ及び
ビームスプリツタを介して受光部に導き記録情報
の読み取りを行う光ピツクアツプにおいて、前記
ビームスプリツタとして、プレート形ビームスプ
リツタを用いると共に、該ビームスプリツタの前
記レーザ光源側の面に回折格子を設けたことを特
徴とする光ピツクアツプ。 An optical pickup that guides a light beam emitted from a laser light source to a track of a disk via a beam splitter and an objective lens, and guides the reflected beam from there to a light receiving section via the objective lens and beam splitter to read recorded information. An optical pickup characterized in that a plate-shaped beam splitter is used as the beam splitter, and a diffraction grating is provided on a surface of the beam splitter facing the laser light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6239186U JPS62175425U (en) | 1986-04-24 | 1986-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6239186U JPS62175425U (en) | 1986-04-24 | 1986-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62175425U true JPS62175425U (en) | 1987-11-07 |
Family
ID=30896621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6239186U Pending JPS62175425U (en) | 1986-04-24 | 1986-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62175425U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62145546A (en) * | 1985-12-20 | 1987-06-29 | Asahi Optical Co Ltd | Optical disk information reproducing device |
-
1986
- 1986-04-24 JP JP6239186U patent/JPS62175425U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62145546A (en) * | 1985-12-20 | 1987-06-29 | Asahi Optical Co Ltd | Optical disk information reproducing device |
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