JPS6239230U - - Google Patents
Info
- Publication number
- JPS6239230U JPS6239230U JP12894985U JP12894985U JPS6239230U JP S6239230 U JPS6239230 U JP S6239230U JP 12894985 U JP12894985 U JP 12894985U JP 12894985 U JP12894985 U JP 12894985U JP S6239230 U JPS6239230 U JP S6239230U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- optical head
- paths
- recording medium
- optical paths
- 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 8
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Optical Head (AREA)
Description
第１図は本考案により複数ビーム光ヘツドの一
実施例を示す図、第２図は従来の一般的な複数ビ
ーム光ヘツドの構成図である。
１０，２９……光分離素子、１１……反射ミラ
ー、１２，３０……検出系、２０ａ，２０ｂ，２
０ｃ，２０ｄ……レーザ光、２１ａ，２１ｂ……
半導体レーザ、２２……コリメータレンズ、２３
……偏光ビームスプリツタ、２４……１／４波長
板、２５……アクチユエータ、２６……収束レン
ズ、２７……記録媒体、２８……レンズ。
FIG. 1 is a diagram showing an embodiment of a multi-beam optical head according to the present invention, and FIG. 2 is a block diagram of a conventional general multi-beam optical head. 10, 29... Light separation element, 11... Reflection mirror, 12, 30... Detection system, 20a, 20b, 2
0c, 20d...Laser light, 21a, 21b...
Semiconductor laser, 22...Collimator lens, 23
... Polarizing beam splitter, 24 ... 1/4 wavelength plate, 25 ... Actuator, 26 ... Converging lens, 27 ... Recording medium, 28 ... Lens.
Claims (1)
反射光を、光路を分離して独立に検出する複数ビ
ーム光ヘツドであつて、光路を分離する光学的手
段として光学遮蔽面が反射ミラーである空間フイ
ルタを用いたことを特徴とする複数ビーム光ヘツ
ド。 A multi-beam optical head that separates the optical paths and independently detects the reflected light from the recording medium of the emitted light of a plurality of semiconductor lasers, and a space in which the optical shielding surface is a reflecting mirror as an optical means for separating the optical paths. A multi-beam optical head characterized by using a filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12894985U JPS6239230U (en) | 1985-08-26 | 1985-08-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12894985U JPS6239230U (en) | 1985-08-26 | 1985-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6239230U true JPS6239230U (en) | 1987-03-09 |
Family
ID=31025082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12894985U Pending JPS6239230U (en) | 1985-08-26 | 1985-08-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239230U (en) |
-
1985
- 1985-08-26 JP JP12894985U patent/JPS6239230U/ja active Pending
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