JPS63193220U - - Google Patents
Info
- Publication number
- JPS63193220U JPS63193220U JP8206287U JP8206287U JPS63193220U JP S63193220 U JPS63193220 U JP S63193220U JP 8206287 U JP8206287 U JP 8206287U JP 8206287 U JP8206287 U JP 8206287U JP S63193220 U JPS63193220 U JP S63193220U
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor laser
- recording surface
- collimating lens
- optical disk
- optical
- 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
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 2
Landscapes
- Optical Head (AREA)
Description
第１図は本考案による光学式ピツクアツプの光
学装置における光学素子の配置図、第２図はコリ
メートレンズの焦点距離を示す光学素子の配置図
、第３図は半導体レーザの発光点の位置と収差と
の関係を示す線図、第４図は対物レンズの横ずれ
と収差との関係を示す線図、第５図は従来の光学
式ピツクアツプの光学装置における光学素子の配
置図である。
１…半導体レーザ、２…発光点、３ａ…コリメ
ートレンズ、４ａ…対物レンズ、６…受光部材、
Ｄ…光デイスク。
Figure 1 is a layout diagram of optical elements in the optical pickup optical device according to the present invention, Figure 2 is a layout diagram of optical elements showing the focal length of the collimating lens, and Figure 3 is a diagram showing the position of the light emitting point of the semiconductor laser and the aberration. FIG. 4 is a diagram showing the relationship between the lateral shift of the objective lens and aberration, and FIG. 5 is a diagram showing the arrangement of optical elements in a conventional optical pickup optical device. DESCRIPTION OF SYMBOLS 1... Semiconductor laser, 2... Light emitting point, 3a... Collimating lens, 4a... Objective lens, 6... Light receiving member,
D... Optical disk.
Claims (1)
レーザビームを光デイスクの記録面に集光させる
対物レンズと、光デイスクの記録面から反射され
たビームを検知する受光部材とから構成されてお
り且つ、半導体レーザの発光点が、コリメートレ
ンズに対しコリメートレンズの集点距離よりも離
れた位置に配置されて成る光学式ピツクアツプの
光学装置。 It is composed of a semiconductor laser, an objective lens that focuses the laser beam emitted from the semiconductor laser onto the recording surface of the optical disk, and a light receiving member that detects the beam reflected from the recording surface of the optical disk. An optical pickup optical device in which a light emitting point is located at a position farther from a collimating lens than the focal distance of the collimating lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8206287U JPS63193220U (en) | 1987-05-28 | 1987-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8206287U JPS63193220U (en) | 1987-05-28 | 1987-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63193220U true JPS63193220U (en) | 1988-12-13 |
Family
ID=30934375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8206287U Pending JPS63193220U (en) | 1987-05-28 | 1987-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63193220U (en) |
-
1987
- 1987-05-28 JP JP8206287U patent/JPS63193220U/ja active Pending