JPS6128117U - Optical pick-up objective lens - Google Patents

Optical pick-up objective lens

Info

Publication number
JPS6128117U
JPS6128117U JP11386384U JP11386384U JPS6128117U JP S6128117 U JPS6128117 U JP S6128117U JP 11386384 U JP11386384 U JP 11386384U JP 11386384 U JP11386384 U JP 11386384U JP S6128117 U JPS6128117 U JP S6128117U
Authority
JP
Japan
Prior art keywords
lens
objective lens
optical pick
support hole
recording medium
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
JP11386384U
Other languages
Japanese (ja)
Inventor
一郎 森下
優 新井
昇一 京谷
Original Assignee
アルプス電気株式会社
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 アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to JP11386384U priority Critical patent/JPS6128117U/en
Publication of JPS6128117U publication Critical patent/JPS6128117U/en
Pending legal-status Critical Current

Links

Landscapes

  • Lens Barrels (AREA)
  • Optical Head (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】 第１図〜第４図は本考案の実施例を示すものであり、第
１図は鏡簡の断面図、第２図はその平面図、第３図は鏡
筒にレンズを挿入した状態を示す断面図、第４図は第３
図の一部拡大図、第５図は従来の対物レンズの断面図、
第６図は対物レンズを使用している光学式ピックアップ
の構成図である。 １６．１７．１８・・・レンズ、１９・・・スペーサ、
２１・・・フレーム、２１ｂ・・・鏡筒、２４・・・接
着剤、Ａ・・・レンズ支持穴、α・・・レンズ位置決め
用段差。[Brief Description of the Drawings] Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a sectional view of a mirror strip, Figure 2 is a plan view thereof, and Figure 3 is a lens barrel. Figure 4 is a cross-sectional view showing the state in which the lens is inserted into the lens.
A partially enlarged view of the figure, Figure 5 is a cross-sectional view of a conventional objective lens,
FIG. 6 is a block diagram of an optical pickup using an objective lens. 16.17.18... Lens, 19... Spacer,
21... Frame, 21b... Lens barrel, 24... Adhesive, A... Lens support hole, α... Lens positioning step.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 鏡筒内に複数枚のレンズが収納されている光学式ピック
アップの対物レンズにおいて、鏡筒内に形成されたレン
ズ支持穴は、記録媒体に対向する側か開口端になってい
るとともに、レ，ンズ支持穴の奥側にレンズ位置決め用
の段差が形成されており、各レンズは、前記開口端から
レンズ支持穴の内部へ挿入され、前記段差を基準として
位置決めされていることを特徴とする光学式ピックアッ
プの対物レンズ。In the objective lens of an optical pickup in which a plurality of lenses are housed in the lens barrel, the lens support hole formed in the lens barrel has an open end on the side facing the recording medium, and also has an opening end facing the recording medium. A step for lens positioning is formed on the back side of the lens support hole, and each lens is inserted into the lens support hole from the opening end and positioned with reference to the step. Objective lens for type pickup.
JP11386384U 1984-07-26 1984-07-26 Optical pick-up objective lens Pending JPS6128117U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11386384U JPS6128117U (en) 1984-07-26 1984-07-26 Optical pick-up objective lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11386384U JPS6128117U (en) 1984-07-26 1984-07-26 Optical pick-up objective lens

Publications (1)

Publication Number Publication Date
JPS6128117U true JPS6128117U (en) 1986-02-20

Family

ID=30672889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11386384U Pending JPS6128117U (en) 1984-07-26 1984-07-26 Optical pick-up objective lens

Country Status (1)

Country Link
JP (1) JPS6128117U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01116506A (en) * 1987-10-29 1989-05-09 Olympus Optical Co Ltd Holding device for lens having convex face

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01116506A (en) * 1987-10-29 1989-05-09 Olympus Optical Co Ltd Holding device for lens having convex face

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