JPH0276325U - - Google Patents
Info
- Publication number
- JPH0276325U JPH0276325U JP15588788U JP15588788U JPH0276325U JP H0276325 U JPH0276325 U JP H0276325U JP 15588788 U JP15588788 U JP 15588788U JP 15588788 U JP15588788 U JP 15588788U JP H0276325 U JPH0276325 U JP H0276325U
- Authority
- JP
- Japan
- Prior art keywords
- light
- semi
- optical
- optical path
- emitting element
- 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 12
- 238000001514 detection method Methods 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 1
Landscapes
- Optical Head (AREA)
Description
第１図は本考案による光ピツクアツプの光学装
置を示す平面図、第２図はその側面図、第３図は
半導体レーザの内部構造を示す透視斜視図、第４
図は従来の光ピツクアツプの光学装置を示す平面
図、第５図はその側面図である。
１……半導体レーザ（発光素子）、３……ビー
ム整形プリズム、４，７……プリズム、６……対
物レンズ、８……トラツキングエラー検出用の受
光素子、１１……フオーカスエラー検出用の受光
素子、１２……モニター受光素子。
FIG. 1 is a plan view showing an optical device for an optical pickup according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a transparent perspective view showing the internal structure of a semiconductor laser, and FIG.
This figure is a plan view showing an optical device of a conventional optical pickup, and FIG. 5 is a side view thereof. 1... Semiconductor laser (light emitting element), 3... Beam shaping prism, 4, 7... Prism, 6... Objective lens, 8... Light receiving element for tracking error detection, 11... For focusing error detection 12...Monitor light receiving element.
Claims (1)
ている半反射面が設けられ、この半反射面を透過
する光路方向に光デイスクに対向する対物レンズ
が配置され、光デイスクの記録面から反射されて
対物レンズを通過した戻り光が前記半反射面によ
つて反射される光路方向には、前記光デイスクの
記録面に形成される光のスポツトの走査エラーを
検知するためのエラー検知部が設けられており且
つ、前記発光素子から発せられた光が前記半反射
面によつて反射される光路方向には、前記発光素
子の発光光量を検知するモニター受光素子が、半
反射面からの反射光路に対して傾斜して配置され
て成る光ピツクアツプの光学装置。 A semi-reflective surface is provided that is arranged at an angle with respect to the light emission path of the light emitting element, and an objective lens is arranged facing the optical disk in the direction of the optical path that passes through this semi-reflective surface. In the optical path direction in which the returned light that has passed through the objective lens is reflected by the semi-reflective surface, there is an error detection section for detecting a scanning error of the light spot formed on the recording surface of the optical disk. A monitor light receiving element for detecting the amount of light emitted from the light emitting element is provided in the optical path direction in which the light emitted from the light emitting element is reflected by the semi-reflecting surface. An optical device for an optical pickup that is arranged obliquely to the optical path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15588788U JPH0276325U (en) | 1988-11-29 | 1988-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15588788U JPH0276325U (en) | 1988-11-29 | 1988-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0276325U true JPH0276325U (en) | 1990-06-12 |
Family
ID=31433917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15588788U Pending JPH0276325U (en) | 1988-11-29 | 1988-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0276325U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140253A (en) * | 1985-12-13 | 1987-06-23 | Sharp Corp | Optical information processor |
-
1988
- 1988-11-29 JP JP15588788U patent/JPH0276325U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62140253A (en) * | 1985-12-13 | 1987-06-23 | Sharp Corp | Optical information processor |