JP2000249831A - 光学素子及び光ヘッド装置 - Google Patents

光学素子及び光ヘッド装置

Info

Publication number
JP2000249831A
JP2000249831A JP11050998A JP5099899A JP2000249831A JP 2000249831 A JP2000249831 A JP 2000249831A JP 11050998 A JP11050998 A JP 11050998A JP 5099899 A JP5099899 A JP 5099899A JP 2000249831 A JP2000249831 A JP 2000249831A
Authority
JP
Japan
Prior art keywords
optical
polarizing
light
head device
polarizing plate
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
JP11050998A
Other languages
English (en)
Japanese (ja)
Other versions
JP2000249831A5 (enExample
Inventor
Yuzuru Tanabe
譲 田辺
Naomitsu Umemura
尚充 梅村
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP11050998A priority Critical patent/JP2000249831A/ja
Publication of JP2000249831A publication Critical patent/JP2000249831A/ja
Publication of JP2000249831A5 publication Critical patent/JP2000249831A5/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Polarising Elements (AREA)
JP11050998A 1999-02-26 1999-02-26 光学素子及び光ヘッド装置 Pending JP2000249831A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11050998A JP2000249831A (ja) 1999-02-26 1999-02-26 光学素子及び光ヘッド装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11050998A JP2000249831A (ja) 1999-02-26 1999-02-26 光学素子及び光ヘッド装置

Publications (2)

Publication Number Publication Date
JP2000249831A true JP2000249831A (ja) 2000-09-14
JP2000249831A5 JP2000249831A5 (enExample) 2005-07-07

Family

ID=12874469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11050998A Pending JP2000249831A (ja) 1999-02-26 1999-02-26 光学素子及び光ヘッド装置

Country Status (1)

Country Link
JP (1) JP2000249831A (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001016627A1 (en) * 1999-08-26 2001-03-08 Asahi Glass Company, Limited Phase shifter and optical head device mounted with the same
EP1420275A4 (en) * 2001-08-24 2005-11-16 Asahi Glass Co Ltd MULTILAYER DIFFUSING POLARIZER AND LIQUID CRYSTAL ELEMENT
JP2006106726A (ja) * 2004-09-13 2006-04-20 Hitachi Maxell Ltd 偏光回折素子
JP2006114201A (ja) * 2004-09-14 2006-04-27 Hitachi Maxell Ltd 偏光回折素子及び光ヘッド装置
JP2006252638A (ja) * 2005-03-09 2006-09-21 Asahi Glass Co Ltd 偏光回折素子および光ヘッド装置
JP2008164859A (ja) * 2006-12-27 2008-07-17 Ricoh Co Ltd 作像エンジンおよび投射装置
US7548359B2 (en) * 2002-11-13 2009-06-16 Asahi Glass Company, Limited Double-wavelength light source unit and optical head device having four diffraction gratings

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001016627A1 (en) * 1999-08-26 2001-03-08 Asahi Glass Company, Limited Phase shifter and optical head device mounted with the same
US6580674B1 (en) 1999-08-26 2003-06-17 Asahi Glass Company, Limited Phase shifter and optical head device mounted with the same
US6917576B2 (en) 1999-08-26 2005-07-12 Asahi Glass Company, Limited Retarder and optical head device installing the same
EP1420275A4 (en) * 2001-08-24 2005-11-16 Asahi Glass Co Ltd MULTILAYER DIFFUSING POLARIZER AND LIQUID CRYSTAL ELEMENT
US7079202B2 (en) 2001-08-24 2006-07-18 Asahi Glass Company, Limited Multi-layer diffraction type polarizer and liquid crystal element
US7764354B2 (en) 2001-08-24 2010-07-27 Asahi Glass Company, Limited Multi-layer diffraction type polarizer and liquid crystal element
US7548359B2 (en) * 2002-11-13 2009-06-16 Asahi Glass Company, Limited Double-wavelength light source unit and optical head device having four diffraction gratings
JP2006106726A (ja) * 2004-09-13 2006-04-20 Hitachi Maxell Ltd 偏光回折素子
JP2006114201A (ja) * 2004-09-14 2006-04-27 Hitachi Maxell Ltd 偏光回折素子及び光ヘッド装置
JP2006252638A (ja) * 2005-03-09 2006-09-21 Asahi Glass Co Ltd 偏光回折素子および光ヘッド装置
JP2008164859A (ja) * 2006-12-27 2008-07-17 Ricoh Co Ltd 作像エンジンおよび投射装置

Similar Documents

Publication Publication Date Title
KR100569633B1 (ko) 위상자 및 이것을 탑재한 광헤드 장치
US20110216255A1 (en) Polarization diffraction grating, method for manufacturing the same, and optical pickup apparatus using the polarization diffraction grating
WO1999018459A1 (en) Optical head device and a diffraction element suitable for the device, and a method of manufacturing the diffraction element and the optical head device
JP4300784B2 (ja) 光ヘッド装置
JP2001101700A (ja) 光ヘッド装置
JP3624561B2 (ja) 光変調素子及び光ヘッド装置
JP3978821B2 (ja) 回折素子
JP2000249831A (ja) 光学素子及び光ヘッド装置
WO2008001636A1 (en) Optical component for laser beam
JP4440706B2 (ja) 偏光ホログラム素子、その製造方法、および偏光ホログラム素子を用いた光ピックアップ装置、および光ディスクドライブ装置
JP5131244B2 (ja) 積層位相板及び光ヘッド装置
JP4139140B2 (ja) 偏光ホログラム素子及びその製造方法
JP4427877B2 (ja) 開口制限素子および光ヘッド装置
JP3713778B2 (ja) 光ヘッド装置
JP3947828B2 (ja) 光ヘッド装置及びその製造方法
JP4349335B2 (ja) 光ヘッド装置
US20090268585A1 (en) Wavelength selecting wavelength plate and optical head device using it
JP3528381B2 (ja) 光ヘッド装置
JP3968593B2 (ja) 光ヘッド装置
JPH09297933A (ja) 光ヘッド装置
JPH1021576A (ja) 光ヘッド装置
JP2007179069A (ja) 光ヘッド装置
JP2005310236A (ja) 波長選択性偏光ホログラム素子
JPH09185837A (ja) 光ヘッド装置
JPH09127335A (ja) 光ヘッド装置の製造方法及び光ヘッド装置

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041110

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041110

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20060425

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071029

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20071129

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080116

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080306

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080310

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20080521