JPH0380524U - - Google Patents
Info
- Publication number
- JPH0380524U JPH0380524U JP13889489U JP13889489U JPH0380524U JP H0380524 U JPH0380524 U JP H0380524U JP 13889489 U JP13889489 U JP 13889489U JP 13889489 U JP13889489 U JP 13889489U JP H0380524 U JPH0380524 U JP H0380524U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- objective lens
- optical pickup
- adjusting
- light beams
- 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 7
- 238000010586 diagram Methods 0.000 description 10
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Description
第1図は本考案になる光ピツクアツプの一実施
例ブロツク構成図、第2図は本考案になる光ピツ
クアツプの基本構成図、第3図は調整レンズと対
物レンズとの作用を示す図、第4図はスポツト位
置の調整を示す図、第5図は従来の光ピツクアツ
プのブロツク構成図、第6図はスポツトの集光状
態を示す図、第7図はコリメータレンズと対物レ
ンズとの作用を示す図、第8図、第11図、第1
2図は照射されたスポツト状態を示す図、第9図
は対物レンズの集光状態を示す図、第10図はサ
ブセンブリを回動させることを示す図である。
1,2…LD(光源)、3,4…コリメータレ
ンズ、5…波長分離プリズム、6…偏光プリズム
、7…1/4波長板、8…対物レンズ、20…調整
用レンズ。
FIG. 1 is a block diagram of an embodiment of the optical pickup according to the present invention, FIG. 2 is a basic configuration diagram of the optical pickup according to the present invention, FIG. 3 is a diagram showing the functions of the adjustment lens and the objective lens, and FIG. Figure 4 is a diagram showing the adjustment of the spot position, Figure 5 is a block diagram of a conventional optical pickup, Figure 6 is a diagram showing the light condensing state of the spot, and Figure 7 is a diagram showing the action of the collimator lens and objective lens. Figures shown, Figure 8, Figure 11, Figure 1
FIG. 2 is a diagram showing the irradiated spot state, FIG. 9 is a diagram showing the condensing state of the objective lens, and FIG. 10 is a diagram showing the rotation of the subassembly. 1, 2...LD (light source), 3, 4...Collimator lens, 5...Wavelength separation prism, 6...Polarizing prism, 7...1/4 wavelength plate, 8...Objective lens, 20...Adjustment lens.
Claims (1)
ームを対物レンズを介して集光する光ピツクアツ
プにおいて、 前記光源から前記対物レンズに至る光路中に調
整用レンズを介挿し、前記調整用レンズの光学系
の位置調整をすることによつて、前記複数の光ビ
ームの同一焦平面上への絞り込みが可能なように
構成したことを特徴とする光ピツクアツプ。[Claims for Utility Model Registration] In an optical pickup that focuses a plurality of light beams emitted from light sources spaced apart from each other through an objective lens, an adjusting lens is inserted in the optical path from the light source to the objective lens. . An optical pickup characterized in that the plurality of light beams can be focused onto the same focal plane by adjusting the position of the optical system of the adjustment lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13889489U JPH0380524U (en) | 1989-11-29 | 1989-11-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13889489U JPH0380524U (en) | 1989-11-29 | 1989-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0380524U true JPH0380524U (en) | 1991-08-19 |
Family
ID=31685969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13889489U Pending JPH0380524U (en) | 1989-11-29 | 1989-11-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0380524U (en) |
-
1989
- 1989-11-29 JP JP13889489U patent/JPH0380524U/ja active Pending