JPS62142725U - - Google Patents
Info
- Publication number
- JPS62142725U JPS62142725U JP2863386U JP2863386U JPS62142725U JP S62142725 U JPS62142725 U JP S62142725U JP 2863386 U JP2863386 U JP 2863386U JP 2863386 U JP2863386 U JP 2863386U JP S62142725 U JPS62142725 U JP S62142725U
- Authority
- JP
- Japan
- Prior art keywords
- light
- recording medium
- receiving element
- optical
- light receiving
- 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 13
- 238000010586 diagram Methods 0.000 description 2
- 201000009310 astigmatism Diseases 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案の光学式ピツクアツプ装置の光
学素子の斜視図、第２図はその基台の平面図、第
３図はその基台の側面図、第４図はその基台の正
面図、第５図はその光学素子の平面図、第６図は
その光学素子の正面図、第７図はその光学素子の
Ａ―Ａ側断面図、第８図はその光学式ピツクアツ
プ装置の側面図、第９図乃至第１１図はその受光
素子の平面図、第１２図及び第１３図はその非点
収差の説明図、第１４図及び第１５図はその受光
素子上の光の形状を表す説明図、第１６図及び第
１７図はそのフオーカスエラー信号の特性図、第
１８図乃至第２１図はその他の実施例の側面図で
ある。
１……基台、２……光源、３，４……受光素子
、５……光学素子、６……対物レンズ、７……デ
イスク。
Fig. 1 is a perspective view of the optical element of the optical pickup device of the present invention, Fig. 2 is a plan view of its base, Fig. 3 is a side view of its base, and Fig. 4 is a front view of its base. , FIG. 5 is a plan view of the optical element, FIG. 6 is a front view of the optical element, FIG. 7 is a sectional view taken along line AA of the optical element, and FIG. 8 is a side view of the optical pickup device. , Figures 9 to 11 are plan views of the light receiving element, Figures 12 and 13 are illustrations of astigmatism, and Figures 14 and 15 represent the shape of light on the light receiving element. Explanatory diagrams, FIGS. 16 and 17 are characteristic diagrams of the focus error signal, and FIGS. 18 to 21 are side views of other embodiments. 1... Base, 2... Light source, 3, 4... Light receiving element, 5... Optical element, 6... Objective lens, 7... Disk.
Claims (1)
と、該記録媒体を経た該光を受光する受光素子と
、該光源から該受光素子までの光路中に配置され
、該光源より発せられた該光を該記録媒体の方向
に反射させる面と、該記録媒体を経た該光を該受
光素子の方向に反射させる面とを有する光学素子
とを備え、該光学素子の少なくとも一方の面は、
該記録媒体により反射され、該受光素子に向かう
該光の光軸が、該光源から発せられ、該記録媒体
に向かう該光の光軸と一致しないように所定の角
度傾斜していることを特徴とする光学式ピツクア
ツプ装置。 A light source that emits light for recording and reproducing information on a recording medium, a light receiving element that receives the light that has passed through the recording medium, and a light receiving element disposed in an optical path from the light source to the light receiving element, and the light emitted from the light source. an optical element having a surface that reflects the light in the direction of the recording medium, and a surface that reflects the light that has passed through the recording medium in the direction of the light receiving element, at least one surface of the optical element,
The optical axis of the light reflected by the recording medium and directed toward the light receiving element is tilted at a predetermined angle so that it does not coincide with the optical axis of the light emitted from the light source and directed toward the recording medium. Optical pick-up device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2863386U JPS62142725U (en) | 1986-02-28 | 1986-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2863386U JPS62142725U (en) | 1986-02-28 | 1986-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62142725U true JPS62142725U (en) | 1987-09-09 |
Family
ID=30831780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2863386U Pending JPS62142725U (en) | 1986-02-28 | 1986-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62142725U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54762A (en) * | 1977-06-03 | 1979-01-06 | Hitachi Ltd | Hybrid integrated circuit |
| JPS6059545A (en) * | 1983-09-12 | 1985-04-05 | Mitsubishi Electric Corp | Automatic focusing device of optical disc head |
-
1986
- 1986-02-28 JP JP2863386U patent/JPS62142725U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54762A (en) * | 1977-06-03 | 1979-01-06 | Hitachi Ltd | Hybrid integrated circuit |
| JPS6059545A (en) * | 1983-09-12 | 1985-04-05 | Mitsubishi Electric Corp | Automatic focusing device of optical disc head |
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