JPS6462838A - Optical pick-up - Google Patents

Optical pick-up

Info

Publication number
JPS6462838A
JPS6462838A JP62219712A JP21971287A JPS6462838A JP S6462838 A JPS6462838 A JP S6462838A JP 62219712 A JP62219712 A JP 62219712A JP 21971287 A JP21971287 A JP 21971287A JP S6462838 A JPS6462838 A JP S6462838A
Authority
JP
Japan
Prior art keywords
converging means
relative position
converging
hologram element
dislocation
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
JP62219712A
Other languages
Japanese (ja)
Other versions
JP2675555B2 (en
Inventor
Yoshio Yoshida
Toshiya Nagahama
Katsuhiro Kubo
Yukio Kurata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62219712A priority Critical patent/JP2675555B2/en
Publication of JPS6462838A publication Critical patent/JPS6462838A/en
Application granted granted Critical
Publication of JP2675555B2 publication Critical patent/JP2675555B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Optical Head (AREA)

Abstract

PURPOSE:To prevent the generation of the dislocation of tracking by providing a converging means and a hologram element while a constant relative position is held. CONSTITUTION:A converging means 13 and a hologram element 12 are provided while a constant relative position is held. At the time of a tracking action, the converging means 13 and the hologram element 12 are simultaneously moved to this. Consequently, the relative misregistration of the reflecting light beam made incident on through the converging means hardly occurs. Thus, a satisfactory servo signal recording information signal can be obtained. For example, even when the converging means is moved so as to follow a converging spot, the dislocation of the relative position of the converging means and the hologram does not occur.
JP62219712A 1987-09-02 1987-09-02 Optical pickup Expired - Lifetime JP2675555B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62219712A JP2675555B2 (en) 1987-09-02 1987-09-02 Optical pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62219712A JP2675555B2 (en) 1987-09-02 1987-09-02 Optical pickup

Publications (2)

Publication Number Publication Date
JPS6462838A true JPS6462838A (en) 1989-03-09
JP2675555B2 JP2675555B2 (en) 1997-11-12

Family

ID=16739785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62219712A Expired - Lifetime JP2675555B2 (en) 1987-09-02 1987-09-02 Optical pickup

Country Status (1)

Country Link
JP (1) JP2675555B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346121A2 (en) * 1988-06-09 1989-12-13 Matsushita Electric Industrial Co., Ltd. Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same
JPH07169069A (en) * 1994-08-05 1995-07-04 Matsushita Electric Ind Co Ltd Optical head device and optical information apparatus
US5648951A (en) * 1990-04-12 1997-07-15 Matsushita Electic Industrial Co. Ltd. Movable optical head integrally incorporated with objective lens and hologram element
US7742384B2 (en) 2006-10-25 2010-06-22 Panasonic Corporation Optical head and optical disc device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195534U (en) * 1985-05-29 1986-12-05
JPS62103857A (en) * 1985-10-31 1987-05-14 Mitsubishi Electric Corp Optical pickup device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61195534U (en) * 1985-05-29 1986-12-05
JPS62103857A (en) * 1985-10-31 1987-05-14 Mitsubishi Electric Corp Optical pickup device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346121A2 (en) * 1988-06-09 1989-12-13 Matsushita Electric Industrial Co., Ltd. Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same
EP0346121A3 (en) * 1988-06-09 1991-05-08 Matsushita Electric Industrial Co., Ltd. Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same
US5111448A (en) * 1988-06-09 1992-05-05 Matsushita Electric Industrial Co., Ltd. Optical pickup head having a hologram-associated objective lens and optical information processing apparatus using the same
US5648951A (en) * 1990-04-12 1997-07-15 Matsushita Electic Industrial Co. Ltd. Movable optical head integrally incorporated with objective lens and hologram element
JPH07169069A (en) * 1994-08-05 1995-07-04 Matsushita Electric Ind Co Ltd Optical head device and optical information apparatus
US7742384B2 (en) 2006-10-25 2010-06-22 Panasonic Corporation Optical head and optical disc device

Also Published As

Publication number Publication date
JP2675555B2 (en) 1997-11-12

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