JP4943700B2 - 光ピックアップの設計方法、及び、光ピックアップ - Google Patents

光ピックアップの設計方法、及び、光ピックアップ Download PDF

Info

Publication number
JP4943700B2
JP4943700B2 JP2005354031A JP2005354031A JP4943700B2 JP 4943700 B2 JP4943700 B2 JP 4943700B2 JP 2005354031 A JP2005354031 A JP 2005354031A JP 2005354031 A JP2005354031 A JP 2005354031A JP 4943700 B2 JP4943700 B2 JP 4943700B2
Authority
JP
Japan
Prior art keywords
optical system
optical
light beam
optical pickup
wavelength
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.)
Expired - Fee Related
Application number
JP2005354031A
Other languages
English (en)
Japanese (ja)
Other versions
JP2007157288A5 (enExample
JP2007157288A (ja
Inventor
勝弘 瀬尾
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP2005354031A priority Critical patent/JP4943700B2/ja
Publication of JP2007157288A publication Critical patent/JP2007157288A/ja
Publication of JP2007157288A5 publication Critical patent/JP2007157288A5/ja
Application granted granted Critical
Publication of JP4943700B2 publication Critical patent/JP4943700B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Optical Head (AREA)
JP2005354031A 2005-12-07 2005-12-07 光ピックアップの設計方法、及び、光ピックアップ Expired - Fee Related JP4943700B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005354031A JP4943700B2 (ja) 2005-12-07 2005-12-07 光ピックアップの設計方法、及び、光ピックアップ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005354031A JP4943700B2 (ja) 2005-12-07 2005-12-07 光ピックアップの設計方法、及び、光ピックアップ

Publications (3)

Publication Number Publication Date
JP2007157288A JP2007157288A (ja) 2007-06-21
JP2007157288A5 JP2007157288A5 (enExample) 2009-10-08
JP4943700B2 true JP4943700B2 (ja) 2012-05-30

Family

ID=38241438

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005354031A Expired - Fee Related JP4943700B2 (ja) 2005-12-07 2005-12-07 光ピックアップの設計方法、及び、光ピックアップ

Country Status (1)

Country Link
JP (1) JP4943700B2 (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11621837B2 (en) 2020-09-03 2023-04-04 Theon Technology Llc Secure encryption of data using partial-key cryptography
US11310042B2 (en) 2020-09-11 2022-04-19 Crown Sterling Limited, LLC Methods of storing and distributing large keys
CN113654482B (zh) * 2021-08-30 2024-06-28 东北大学秦皇岛分校 一种基于色差和谱域干涉的光学3d成像装置及方法
US11755772B2 (en) 2021-09-20 2023-09-12 Crown Sterling Limited, LLC Securing data in a blockchain with a one-time pad
US11943336B2 (en) 2021-11-22 2024-03-26 Theon Technology Llc Use of gradient decent function in cryptography
US11791988B2 (en) 2021-11-22 2023-10-17 Theon Technology Llc Use of random entropy in cryptography
US11902420B2 (en) 2021-11-23 2024-02-13 Theon Technology Llc Partial cryptographic key transport using one-time pad encryption
US12261952B2 (en) 2022-11-04 2025-03-25 Crown Sterling Limited, LLC Multiple vector one-time key pad
US12250310B2 (en) 2023-01-09 2025-03-11 Crown Sterling Limited, LLC Use of irrational numbers in elliptic curve cryptography

Also Published As

Publication number Publication date
JP2007157288A (ja) 2007-06-21

Similar Documents

Publication Publication Date Title
JP4943700B2 (ja) 光ピックアップの設計方法、及び、光ピックアップ
US20110080817A1 (en) Compatible optical pickup and optical information storage medium system employing the same
US20090059745A1 (en) Optical pickup device and information recording/playback apparatus
JP4642492B2 (ja) 光学的情報記録再生装置
JP2010157315A (ja) 非球面レンズ及びそれを対物レンズとして採用した光ピックアップ
JP5069893B2 (ja) 光ピックアップ及び光ディスクドライブ
JP2005327395A (ja) 光ピックアップ及びこれを用いた記録及び／又は再生装置
JP2005158171A (ja) 光ピックアップ
JP4176070B2 (ja) 光ディスクピックアップ制御装置及び光ディスクピックアップ制御方法
US7483357B2 (en) Optical pickup and optical disc apparatus
JP2009223946A (ja) 光ピックアップ装置
US20070291601A1 (en) Method of correcting chromatic aberration generated during conversion from reproducing mode to recording mode, and recording method and recording and reproducing apparatus adopting the correction method
JP4345572B2 (ja) 光ピックアップ及びこれを用いた記録及び／又は再生装置
EP1612781A2 (en) Optical disc apparatus
JP2001052367A (ja) 光ピックアップ装置及び光学式情報記録再生装置
JP5078743B2 (ja) 光ピックアップ装置および光メモリドライブ装置
JP2009116937A (ja) ピックアップ装置等
JP2005353250A (ja) 光ピックアップ及び光ディスク装置
JP2012104183A (ja) 光ピックアップ
JP2005327388A (ja) 光ピックアップ、光ディスク装置及び光軸倒れ補正方法
JP2001160238A (ja) 光ヘッド装置及び光ディスクドライブ装置
JP2008065919A (ja) 光ピックアップ及びそれを用いた光ディスク装置
JP2005346796A (ja) 光ピックアップ及びこれを用いた記録及び／又は再生装置
JP2004095039A (ja) 光ピックアップ装置及び光ディスク装置
JP2005071524A (ja) 光ピックアップ装置

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20081125

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090826

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20090826

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20090907

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090929

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091130

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20100112

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20111227

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120301

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150309

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees