JPH025113U - - Google Patents

Info

Publication number
JPH025113U
JPH025113U JP8125788U JP8125788U JPH025113U JP H025113 U JPH025113 U JP H025113U JP 8125788 U JP8125788 U JP 8125788U JP 8125788 U JP8125788 U JP 8125788U JP H025113 U JPH025113 U JP H025113U
Authority
JP
Japan
Prior art keywords
reflecting mirror
adjust
optical axis
axis toward
photodetector
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
JP8125788U
Other languages
Japanese (ja)
Other versions
JPH0739051Y2 (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 JP1988081257U priority Critical patent/JPH0739051Y2/en
Publication of JPH025113U publication Critical patent/JPH025113U/ja
Application granted granted Critical
Publication of JPH0739051Y2 publication Critical patent/JPH0739051Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Description

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

第１図は本考案の光学ヘツドの構成を示す図面
であり、第２図は反射ミラーと対物レンズ及び記
録媒体の関係を示す図面である。第３図乃至第７
図は本考案の光学ヘツド調整機構を示す図面であ
り、第３図は反射ミラーの取付状態を示す平面図
、第４図はその側面図である。第５図はビーム整
形プリズムの取付状態を示す平面図であり、第６
図はその側面図である。第７図は本考案の調整機
構により対物レンズでのビームの移動を説明する
ための説明図である。第８図は従来の光学ヘツド
の構成を示す説明図である。 ３……ビーム整形プリズム、６……反射ミラー
。 FIG. 1 is a drawing showing the structure of the optical head of the present invention, and FIG. 2 is a drawing showing the relationship among a reflecting mirror, an objective lens, and a recording medium. Figures 3 to 7
The figures are drawings showing the optical head adjustment mechanism of the present invention, FIG. 3 is a plan view showing a state in which a reflecting mirror is attached, and FIG. 4 is a side view thereof. FIG. 5 is a plan view showing the installed state of the beam shaping prism, and FIG.
The figure is a side view thereof. FIG. 7 is an explanatory diagram for explaining the movement of the beam in the objective lens by the adjustment mechanism of the present invention. FIG. 8 is an explanatory diagram showing the structure of a conventional optical head. 3...Beam shaping prism, 6...Reflecting mirror.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] レーザ光源からのレーザ光をコリメータレンズ
とビーム整形プリズム、ピンホール、回析格子を
通し、反射ミラー、対物レンズを介して記録媒体
面上に導くとともに対物レンズからの反射光を反
射ミラーを介して光検出器に導くようにした光学
ヘツドにおいて、前記ビーム整形プリズムを回転
可能とすることにより反射ミラーに向かう光軸の
方向の調整を行うとともに、前記反射ミラーを回
転可能とすることにより対物レンズに向かう光軸
の方向の調整及び光検出器に向かう光軸の方向の
調整を行うように構成したことを特徴とする光学
ヘツドの調整機構。 Laser light from a laser light source passes through a collimator lens, a beam shaping prism, a pinhole, and a diffraction grating, and is guided onto the recording medium surface via a reflecting mirror and an objective lens, and the reflected light from the objective lens is guided through a reflecting mirror. In an optical head configured to guide the beam to a photodetector, the beam shaping prism is rotatable to adjust the direction of the optical axis toward the reflecting mirror, and the reflecting mirror is rotatable to adjust the direction of the optical axis toward the objective lens. 1. An adjustment mechanism for an optical head, characterized in that it is configured to adjust the direction of the optical axis toward the photodetector, and adjust the direction of the optical axis toward the photodetector.
JP1988081257U 1988-06-20 1988-06-20 Optical head adjustment mechanism Expired - Lifetime JPH0739051Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988081257U JPH0739051Y2 (en) 1988-06-20 1988-06-20 Optical head adjustment mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988081257U JPH0739051Y2 (en) 1988-06-20 1988-06-20 Optical head adjustment mechanism

Publications (2)

Publication Number Publication Date
JPH025113U true JPH025113U (en) 1990-01-12
JPH0739051Y2 JPH0739051Y2 (en) 1995-09-06

Family

ID=31306044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988081257U Expired - Lifetime JPH0739051Y2 (en) 1988-06-20 1988-06-20 Optical head adjustment mechanism

Country Status (1)

Country Link
JP (1) JPH0739051Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7286450B2 (en) 2003-01-22 2007-10-23 Sharp Kabushiki Kaisha Light pickup device with center axis and light balancing adjustment
CN112292609A (en) * 2018-06-14 2021-01-29 松下知识产权经营株式会社 Object detection device and photodetector

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313905A (en) * 1976-07-24 1978-02-08 Mansei Kogyo Kk Optical information reader
JPS5817550A (en) * 1981-07-24 1983-02-01 Toshiba Corp Adjusting mechanism for optical head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313905A (en) * 1976-07-24 1978-02-08 Mansei Kogyo Kk Optical information reader
JPS5817550A (en) * 1981-07-24 1983-02-01 Toshiba Corp Adjusting mechanism for optical head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7286450B2 (en) 2003-01-22 2007-10-23 Sharp Kabushiki Kaisha Light pickup device with center axis and light balancing adjustment
CN112292609A (en) * 2018-06-14 2021-01-29 松下知识产权经营株式会社 Object detection device and photodetector

Also Published As

Publication number Publication date
JPH0739051Y2 (en) 1995-09-06

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