JPH042318U - - Google Patents
Info
- Publication number
- JPH042318U JPH042318U JP3984890U JP3984890U JPH042318U JP H042318 U JPH042318 U JP H042318U JP 3984890 U JP3984890 U JP 3984890U JP 3984890 U JP3984890 U JP 3984890U JP H042318 U JPH042318 U JP H042318U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- collimating lens
- optical pickup
- adjustment mechanism
- beam shaping
- 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
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 201000009310 astigmatism Diseases 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例を示す概略構成図、
第２図は第１図の一実施例を用いた光ピツクアツ
プの概略構成図、第３図、第４図は従来技術を説
明するための説明図である。
１……半導体レーザ、２……ベース部、５……
コリメートレンズ、６……レンズホルダ、１１…
…ビーム整形プリズム。
FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
FIG. 2 is a schematic diagram of an optical pickup using the embodiment shown in FIG. 1, and FIGS. 3 and 4 are explanatory diagrams for explaining the prior art. 1... Semiconductor laser, 2... Base part, 5...
Collimating lens, 6... Lens holder, 11...
...beam shaping prism.
Claims (1)
整形プリズムとを有し、該ビーム整形プリズムに
よりビーム形状を補正する光ピツクアツプにおい
て、前記半導体レーザと前記コリメートレンズと
の光軸方向の間隔を調節する調節機構を設け、該
調節機構の調節で半導体レーザの非点隔差を補正
することを特徴とする光ピツクアツプ。 (2) 前記調節機構を、前記コリメートレンズを
収納する鏡筒の外周に設けたネジ機構により、光
軸方向に可動とした請求項(1)記載の光ピツクア
ツプ。[Claims for Utility Model Registration] (1) In an optical pickup having a semiconductor laser, a collimating lens, and a beam shaping prism, and correcting the beam shape by the beam shaping prism, the optical axis of the semiconductor laser and the collimating lens is 1. An optical pickup characterized in that an adjustment mechanism is provided for adjusting the directional spacing, and astigmatism difference of a semiconductor laser is corrected by adjustment of the adjustment mechanism. (2) The optical pickup according to claim 1, wherein the adjustment mechanism is movable in the optical axis direction by a screw mechanism provided on the outer periphery of a lens barrel housing the collimating lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3984890U JPH042318U (en) | 1990-04-14 | 1990-04-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3984890U JPH042318U (en) | 1990-04-14 | 1990-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH042318U true JPH042318U (en) | 1992-01-09 |
Family
ID=31549115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3984890U Pending JPH042318U (en) | 1990-04-14 | 1990-04-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042318U (en) |
-
1990
- 1990-04-14 JP JP3984890U patent/JPH042318U/ja active Pending
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