JPS61203427U - - Google Patents
Info
- Publication number
- JPS61203427U JPS61203427U JP8842885U JP8842885U JPS61203427U JP S61203427 U JPS61203427 U JP S61203427U JP 8842885 U JP8842885 U JP 8842885U JP 8842885 U JP8842885 U JP 8842885U JP S61203427 U JPS61203427 U JP S61203427U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- pickup device
- optical element
- light source
- point light
- 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 11
- 239000005357 flat glass Substances 0.000 claims description 2
- 201000009310 astigmatism Diseases 0.000 claims 2
- 230000001427 coherent effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Description
第１図は本考案に係る光学系ピツクアツプ装置
の概略構成図で、第２図は同光学系ピツクアツプ
装置の他の実施例の概略構成図、第３図は従来の
光学系ピツクアツプ装置の概略構成図を示す。
２……点光源、３……光学素子、４……平行板
ガラス、５……マイクロフレネルレンズ、６……
波面分割素子。
FIG. 1 is a schematic configuration diagram of an optical pickup device according to the present invention, FIG. 2 is a schematic configuration diagram of another embodiment of the same optical pickup device, and FIG. 3 is a schematic configuration diagram of a conventional optical pickup device. Show the diagram. 2... Point light source, 3... Optical element, 4... Parallel plate glass, 5... Micro Fresnel lens, 6...
Wavefront splitting element.
Claims (1)
発散光に非点収差を発生させる光学素子と、その
非点収差を補正するマイクロフレネルレンズとか
ら構成されていることを特徴とする光学系ピツク
アツプ装置。 (2) 上記の光学素子の表面に波面分割素子を形
成したことを特徴とする実用新案登録請求の範囲
第１項記載の光学系ピツクアツプ装置。 (3) 上記の光学素子として平行板ガラスを光軸
に対して斜めに配置したことを特徴とする実用新
案登録請求の範囲第１項または第２項記載の光学
系ピツクアツプ装置。[Claims for Utility Model Registration] (1) Consisting of a coherent point light source, an optical element that generates astigmatism in the diverging light from the point light source, and a micro Fresnel lens that corrects the astigmatism. An optical pick-up device characterized by: (2) The optical system pickup device according to claim 1, wherein a wavefront splitting element is formed on the surface of the optical element. (3) The optical system pickup device according to claim 1 or 2, which is characterized in that the optical element is a parallel plate glass arranged obliquely with respect to the optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8842885U JPS61203427U (en) | 1985-06-12 | 1985-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8842885U JPS61203427U (en) | 1985-06-12 | 1985-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61203427U true JPS61203427U (en) | 1986-12-20 |
Family
ID=30641551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8842885U Pending JPS61203427U (en) | 1985-06-12 | 1985-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61203427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04117635A (en) * | 1989-06-06 | 1992-04-17 | Pencom Internatl Corp | Optical head assembly body of a semiconductor laser |
-
1985
- 1985-06-12 JP JP8842885U patent/JPS61203427U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04117635A (en) * | 1989-06-06 | 1992-04-17 | Pencom Internatl Corp | Optical head assembly body of a semiconductor laser |