JPH02128220U - - Google Patents
Info
- Publication number
- JPH02128220U JPH02128220U JP3570489U JP3570489U JPH02128220U JP H02128220 U JPH02128220 U JP H02128220U JP 3570489 U JP3570489 U JP 3570489U JP 3570489 U JP3570489 U JP 3570489U JP H02128220 U JPH02128220 U JP H02128220U
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- apodized filter
- signal
- recording medium
- apodized
- 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 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Optical Head (AREA)
Description
第１図は本考案に係る光ピツクアツプ装置の光
学系を示す構成図、第２図はその対物レンズの断
面図、第３図は対物レンズ駆動機構を示す斜視図
、第４図は信号記録媒体の信号面上における従来
の光スポツトの光量分布を示す特性図である。
主な図番の説明、４……対物レンズ、８……ア
ポダイズドフイルター。
Fig. 1 is a configuration diagram showing the optical system of the optical pickup device according to the present invention, Fig. 2 is a sectional view of the objective lens, Fig. 3 is a perspective view showing the objective lens drive mechanism, and Fig. 4 is a signal recording medium. FIG. 2 is a characteristic diagram showing the light intensity distribution of a conventional optical spot on a signal plane of the present invention. Explanation of main figure numbers, 4...Objective lens, 8...Apodized filter.
Claims (1)
ーデイスクが発生するのを防止するべくアポダイ
ズドフイルターが設けられた光ピツクアツプ装置
において、前記アポダイズドフイルターを対物レ
ンズの表面に形成したことを特徴とする光ピツク
アツプ装置。 An optical pickup device provided with an apodized filter to prevent the occurrence of an Airy disk on a light spot on a signal surface of a signal recording medium, characterized in that the apodized filter is formed on the surface of an objective lens. Optical pick-up device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3570489U JPH02128220U (en) | 1989-03-28 | 1989-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3570489U JPH02128220U (en) | 1989-03-28 | 1989-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128220U true JPH02128220U (en) | 1990-10-23 |
Family
ID=31541288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3570489U Pending JPH02128220U (en) | 1989-03-28 | 1989-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128220U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6257135A (en) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | Pickup device in optical information recording and reproducing device |
-
1989
- 1989-03-28 JP JP3570489U patent/JPH02128220U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6257135A (en) * | 1985-09-05 | 1987-03-12 | Pioneer Electronic Corp | Pickup device in optical information recording and reproducing device |