JPH0164110U - - Google Patents

Info

Publication number
JPH0164110U
JPH0164110U JP1987158112U JP15811287U JPH0164110U JP H0164110 U JPH0164110 U JP H0164110U JP 1987158112 U JP1987158112 U JP 1987158112U JP 15811287 U JP15811287 U JP 15811287U JP H0164110 U JPH0164110 U JP H0164110U
Authority
JP
Japan
Prior art keywords
lens holder
objective lens
recording medium
fixed
pickup 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.)
Granted
Application number
JP1987158112U
Other languages
Japanese (ja)
Other versions
JPH079209Y2 (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 JP1987158112U priority Critical patent/JPH079209Y2/en
Publication of JPH0164110U publication Critical patent/JPH0164110U/ja
Application granted granted Critical
Publication of JPH079209Y2 publication Critical patent/JPH079209Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Description

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

第１図は本考案による光ピツクアツプ装置の一
実施例を示す概略構成図、第２図は同実施例にお
ける対物レンズ部部分の断面図、第３図は本考案
による光ピツクアツプ装置の一実施例を示す断面
図、第４図は一般的な光ピツクアツプ装置の光学
系を示す概略構成図、第５図は従来の光ピツクア
ツプ装置を説明するための部分断面図である。 １６…対物レンズ部、２４…レンズホルダ（対
物レンズホルダ）、２５…対物レンズ（対物レン
ズセル）、２９…λ／４波長板。 FIG. 1 is a schematic configuration diagram showing an embodiment of an optical pickup device according to the present invention, FIG. 2 is a sectional view of an objective lens portion in the same embodiment, and FIG. 3 is an embodiment of an optical pickup device according to the present invention. 4 is a schematic configuration diagram showing the optical system of a general optical pickup device, and FIG. 5 is a partial sectional view for explaining a conventional optical pickup device. 16... Objective lens section, 24... Lens holder (objective lens holder), 25... Objective lens (objective lens cell), 29... λ/4 wavelength plate.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 筒状のレンズホルダと、このレンズホルダの一
端側に固定される対物レンズとを備えた対物レン
ズ部を介して記録媒体に光ビームを照射して、こ
の記録媒体上に情報を記録したり、記録されてい
る情報を読み取つたりする光ピツクアツプ装置に
おいて、前記レンズホルダの筒部内にλ／４波長
板を固定したことを特徴とする光ピツクアツプ装
置。 Recording information on the recording medium by irradiating a light beam onto the recording medium through an objective lens unit that includes a cylindrical lens holder and an objective lens fixed to one end of the lens holder; An optical pickup device for reading recorded information, characterized in that a λ/4 wavelength plate is fixed within the cylindrical portion of the lens holder.
JP1987158112U 1987-10-15 1987-10-15 Optical pickup device Expired - Lifetime JPH079209Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987158112U JPH079209Y2 (en) 1987-10-15 1987-10-15 Optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987158112U JPH079209Y2 (en) 1987-10-15 1987-10-15 Optical pickup device

Publications (2)

Publication Number Publication Date
JPH0164110U true JPH0164110U (en) 1989-04-25
JPH079209Y2 JPH079209Y2 (en) 1995-03-06

Family

ID=31438146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987158112U Expired - Lifetime JPH079209Y2 (en) 1987-10-15 1987-10-15 Optical pickup device

Country Status (1)

Country Link
JP (1) JPH079209Y2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194151A (en) * 1982-05-10 1983-11-12 Sony Corp Optical pickup device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194151A (en) * 1982-05-10 1983-11-12 Sony Corp Optical pickup device

Also Published As

Publication number Publication date
JPH079209Y2 (en) 1995-03-06

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