JPS63161424U - - Google Patents
Info
- Publication number
- JPS63161424U JPS63161424U JP5221087U JP5221087U JPS63161424U JP S63161424 U JPS63161424 U JP S63161424U JP 5221087 U JP5221087 U JP 5221087U JP 5221087 U JP5221087 U JP 5221087U JP S63161424 U JPS63161424 U JP S63161424U
- Authority
- JP
- Japan
- Prior art keywords
- laser diode
- collimating lens
- collimating
- laser
- laser beam
- 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 6
- 238000010586 diagram Methods 0.000 description 4
- 201000009310 astigmatism Diseases 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 1
Landscapes
- Lenses (AREA)
- Optical Head (AREA)
Description
第１図は本考案のコリメート光学装置の構成図
、第２図は第１図図示本考案の非点隔差をもつコ
リメート光学系を説明する構成図、第３図は従来
のコリメート光学装置を説明する構成図、第４図
は現在使用されているレーザダイオードの非点隔
差の統計である。
１……ケース、２……レーザダイオード、３…
…カバーガラス、４……コリメートレンズ、５…
…ビームスプリツタ。
Fig. 1 is a block diagram of the collimating optical device of the present invention, Fig. 2 is a block diagram illustrating the collimating optical system with astigmatism of the present invention shown in Fig. 1, and Fig. 3 is a diagram illustrating the conventional collimating optical device. The block diagram shown in FIG. 4 shows the statistics of the astigmatism difference of the laser diode currently used. 1... Case, 2... Laser diode, 3...
...Cover glass, 4...Collimating lens, 5...
...beam splitter.
Claims (1)
ザービームを発するレーザーダイオードの前方に
レーザービームを平行光束とするコリメートレン
ズが配設されている。光学式ピツクアツプ用コリ
メート光学装置において、前記コリメートレンズ
のレーザーダイオード側の面あるいは平行光束射
出側の面いずれか一面をトーリツク面にしたこと
を特徴とする光学式ピツクアツプ用コリメート光
学装置。 A collimating lens that converts the laser beam into a parallel beam is disposed in front of a laser diode that emits a laser beam for reading or recording information on the optical disk. 1. A collimating optical device for an optical pickup, characterized in that either one of the laser diode-side surface of the collimating lens or the parallel light beam exit side is a toric surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5221087U JPS63161424U (en) | 1987-04-07 | 1987-04-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5221087U JPS63161424U (en) | 1987-04-07 | 1987-04-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63161424U true JPS63161424U (en) | 1988-10-21 |
Family
ID=30877177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5221087U Pending JPS63161424U (en) | 1987-04-07 | 1987-04-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63161424U (en) |
-
1987
- 1987-04-07 JP JP5221087U patent/JPS63161424U/ja active Pending
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