JPS59112326U - optical head - Google Patents

optical head

Info

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
Application number
JP388483U
Other languages
Japanese (ja)
Inventor
岸上　功夫
Original Assignee
日本電気株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP388483U priority Critical patent/JPS59112326U/en
Publication of JPS59112326U publication Critical patent/JPS59112326U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 記録媒体上の任意の一点に集光する対物レンズを含む光
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.
JP388483U 1983-01-14 1983-01-14 optical head Pending JPS59112326U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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