JPH01162118U - - Google Patents

Info

Publication number
JPH01162118U
JPH01162118U JP5939188U JP5939188U JPH01162118U JP H01162118 U JPH01162118 U JP H01162118U JP 5939188 U JP5939188 U JP 5939188U JP 5939188 U JP5939188 U JP 5939188U JP H01162118 U JPH01162118 U JP H01162118U
Authority
JP
Japan
Prior art keywords
optical disk
variable member
light amount
amount variable
disk device
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
JP5939188U
Other languages
English (en)
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 filed Critical
Priority to JP5939188U priority Critical patent/JPH01162118U/ja
Publication of JPH01162118U publication Critical patent/JPH01162118U/ja
Pending legal-status Critical Current

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  • Optical Head (AREA)

Description

【図面の簡単な説明】
第1図は実施例のOD装置の光ヘツド部の構成
を示す図である。 図中、1……レーザダイオード(LD)、2…
…コリメータレンズ(CL)、3……光量可変部
材(例えば液晶板)、4……真円補正プリズム、
5……偏光ビームスプリツタ(PBS)、6……
1/4波長板(QWP)、7……対物レンズ(O
L)、8……光デイスク(OD)、9……サーボ
検出光学系、10……4分割PINフオトダイオ
ードである。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 発光部と光デイスク面との間の光学系に光
    量可変部材を備えることを特徴とする光デイスク
    装置。 (2) 光量可変部材は液晶板であることを特徴と
    する請求項第1項記載の光デイスク装置。
JP5939188U 1988-05-06 1988-05-06 Pending JPH01162118U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5939188U JPH01162118U (ja) 1988-05-06 1988-05-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5939188U JPH01162118U (ja) 1988-05-06 1988-05-06

Publications (1)

Publication Number Publication Date
JPH01162118U true JPH01162118U (ja) 1989-11-10

Family

ID=31285165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5939188U Pending JPH01162118U (ja) 1988-05-06 1988-05-06

Country Status (1)

Country Link
JP (1) JPH01162118U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003049096A1 (en) * 2001-12-04 2003-06-12 Sony Corporation Optical recording medium driving device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003049096A1 (en) * 2001-12-04 2003-06-12 Sony Corporation Optical recording medium driving device

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