JPS59112326U - optical head - Google Patents
optical headInfo
- Publication number
- JPS59112326U JPS59112326U JP388483U JP388483U JPS59112326U JP S59112326 U JPS59112326 U JP S59112326U JP 388483 U JP388483 U JP 388483U JP 388483 U JP388483 U JP 388483U JP S59112326 U JPS59112326 U JP S59112326U
- Authority
- JP
- Japan
- Prior art keywords
- optical head
- reproducing device
- information recording
- information
- 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
Landscapes
- Optical Head (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の第一の実施例を示す断面図である。第
２図は本考案の第二の実施例を示す断面図である。
図において、２．３・・・光学ヘッド、４・・・半導体
レーザー、６・・・コリメートレンズ、８・・・偏光ビ
ームスプリッタ、１０・・・四分の一波長板、１２゜１
３・・・対物レンズ、１４・・・光検出器、１６・・・
加熱線、１７・・・加熱器、１Ｂ・・・除湿剤、２０・
・・光ディスク。FIG. 1 is a sectional view showing a first embodiment of the present invention. FIG. 2 is a sectional view showing a second embodiment of the present invention. In the figure, 2.3... Optical head, 4... Semiconductor laser, 6... Collimating lens, 8... Polarizing beam splitter, 10... Quarter wavelength plate, 12°1
3... Objective lens, 14... Photodetector, 16...
Heating wire, 17... Heater, 1B... Dehumidifier, 20.
··optical disk.
Claims (1)
学部品を有する情報記録装置または情報再生装置または
情報記録再生装置用の光学ヘッドであって、前記対物レ
ンズ内または前記光学ヘッドの適宜の箇所に結露防御手
段を備えることを特徴とする光学ヘッド。An information recording device, an information reproducing device, or an optical head for an information recording and reproducing device, which has an optical component including an objective lens that focuses light on an arbitrary point on a recording medium, wherein An optical head characterized by having dew condensation prevention means at certain points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP388483U JPS59112326U (en) | 1983-01-14 | 1983-01-14 | optical head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP388483U JPS59112326U (en) | 1983-01-14 | 1983-01-14 | optical head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59112326U true JPS59112326U (en) | 1984-07-28 |
Family
ID=30135495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP388483U Pending JPS59112326U (en) | 1983-01-14 | 1983-01-14 | optical head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59112326U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183119U (en) * | 1984-11-02 | 1986-06-02 | ||
| JPS6455987U (en) * | 1987-10-05 | 1989-04-06 | ||
| JP2003203374A (en) * | 2001-12-27 | 2003-07-18 | Ricoh Co Ltd | Objective lens for optical pickup and manufacturing method thereof, and optical pickup module, optical disk device and dew condensation removing method |
-
1983
- 1983-01-14 JP JP388483U patent/JPS59112326U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6183119U (en) * | 1984-11-02 | 1986-06-02 | ||
| JPS6455987U (en) * | 1987-10-05 | 1989-04-06 | ||
| JP2003203374A (en) * | 2001-12-27 | 2003-07-18 | Ricoh Co Ltd | Objective lens for optical pickup and manufacturing method thereof, and optical pickup module, optical disk device and dew condensation removing method |
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