JPS6239232U - - Google Patents
Info
- Publication number
- JPS6239232U JPS6239232U JP13068185U JP13068185U JPS6239232U JP S6239232 U JPS6239232 U JP S6239232U JP 13068185 U JP13068185 U JP 13068185U JP 13068185 U JP13068185 U JP 13068185U JP S6239232 U JPS6239232 U JP S6239232U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- prism
- semi
- light
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- 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
置の実施例を示す部材配置図、第2図は従来の光
ピツクアツプの光学装置の構成図である。
21……発光素子、23……プリズム、23a
……半反射面、23b……全反射面、24……対
物レンズ、25……受光素子、D……光デイスク
。
FIG. 1 is a component arrangement diagram showing an embodiment of an optical device for an optical pickup according to the present invention, and FIG. 2 is a configuration diagram of a conventional optical device for an optical pickup. 21... Light emitting element, 23... Prism, 23a
...Semi-reflective surface, 23b... Total reflection surface, 24... Objective lens, 25... Light receiving element, D... Optical disk.
Claims (1)
ームを光デイスクの記録面に集光させる対物レン
ズと、光デイスクからの反射ビームを検知する受
光素子とが設けられている光ピツクアツプにおい
て、対物レンズの光軸上にはプリズムが設けられ
ており、このプリズムには、光軸に対して45度
傾斜している半反射面と、これよりも対物レンズ
から離れた位置にあつて対物レンズの光軸と直交
して形成されている全反射面とが設けられており
、且つ前記発光素子と受光素子とが、プリズムの
半反射面を挾んで同軸上に配置されていることを
特徴とする光デイスクの光学装置。 In an optical pickup equipped with a light-emitting element that generates a detection beam, an objective lens that focuses the detection beam on the recording surface of an optical disk, and a light-receiving element that detects the reflected beam from the optical disk, the objective lens is A prism is provided on the optical axis, and this prism includes a semi-reflective surface that is inclined at 45 degrees with respect to the optical axis, and a semi-reflective surface that is located further away from the objective lens and that is located on the optical axis of the objective lens. and a total reflection surface formed perpendicular to the prism, and the light emitting element and the light receiving element are arranged coaxially with the semi-reflection surface of the prism in between. optical device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13068185U JPS6239232U (en) | 1985-08-26 | 1985-08-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13068185U JPS6239232U (en) | 1985-08-26 | 1985-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6239232U true JPS6239232U (en) | 1987-03-09 |
Family
ID=31028413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13068185U Pending JPS6239232U (en) | 1985-08-26 | 1985-08-26 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6239232U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS578929A (en) * | 1980-08-29 | 1982-01-18 | Matsushita Electric Ind Co Ltd | Optical pickup device |
JPS57120242A (en) * | 1981-01-14 | 1982-07-27 | Matsushita Electric Ind Co Ltd | Optical information reproducing device |
-
1985
- 1985-08-26 JP JP13068185U patent/JPS6239232U/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS578929A (en) * | 1980-08-29 | 1982-01-18 | Matsushita Electric Ind Co Ltd | Optical pickup device |
JPS57120242A (en) * | 1981-01-14 | 1982-07-27 | Matsushita Electric Ind Co Ltd | Optical information reproducing device |
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