JPS648228U - - Google Patents
Info
- Publication number
- JPS648228U JPS648228U JP10245787U JP10245787U JPS648228U JP S648228 U JPS648228 U JP S648228U JP 10245787 U JP10245787 U JP 10245787U JP 10245787 U JP10245787 U JP 10245787U JP S648228 U JPS648228 U JP S648228U
- Authority
- JP
- Japan
- Prior art keywords
- optical means
- optical
- information surfaces
- reflected
- 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 14
- 238000001514 detection method Methods 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図および第２図は本考案の一実施例を示す
ものであつて、第１図は光ピツクアツプ装置の要
部を示す平面図、第２図は光ピツクアツプ装置の
全体を示す平面図、第３図は従来の光ピツクアツ
プ装置を示す平面図である。
１３は光デイスク、１７は第１光学手段、１８
は対物レンズ、１９は半導体レーザー、２０は鏡
面体、２１は第２光学手段、２３はビームスプリ
ツター、２７は光検出器、２７ａ，２７ｂは光検
出部である。
1 and 2 show an embodiment of the present invention, in which FIG. 1 is a plan view showing the main parts of an optical pickup device, FIG. 2 is a plan view showing the entire optical pickup device, FIG. 3 is a plan view showing a conventional optical pickup device. 13 is an optical disk, 17 is a first optical means, 18
19 is an objective lens, 19 is a semiconductor laser, 20 is a specular body, 21 is a second optical means, 23 is a beam splitter, 27 is a photodetector, and 27a and 27b are photodetectors.
Claims (1)
２つの光デイスク同士の間に設けられ、一本のレ
ーザー光を２方向に反射して上記両光デイスクの
情報面上に同時に集光させるとともに、上記それ
ぞれの情報面にて反射された２つの反射光を第２
光学手段に導く第１光学手段と、この第１光学手
段に上記レーザー光を供給するとともに、上記第
１光学手段にて導かれた上記２つの反射光を導入
して切り換え自在な２個の光検出部にそれぞれ導
く第２光学手段とを備えて成る光ピツクアツプ装
置。 It is provided between two optical disks that are placed opposite each other so that their information surfaces face each other, and reflects one laser beam in two directions and simultaneously focuses it on the information surfaces of both optical disks. The two reflected lights reflected on each of the above information surfaces are
a first optical means that leads to the optical means; and two lights that can be switched freely by supplying the laser beam to the first optical means and introducing the two reflected lights guided by the first optical means; an optical pickup device comprising second optical means each guiding to a detection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245787U JPS648228U (en) | 1987-07-03 | 1987-07-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245787U JPS648228U (en) | 1987-07-03 | 1987-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648228U true JPS648228U (en) | 1989-01-18 |
Family
ID=31332384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10245787U Pending JPS648228U (en) | 1987-07-03 | 1987-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648228U (en) |
-
1987
- 1987-07-03 JP JP10245787U patent/JPS648228U/ja active Pending