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1. WO2006098361 - OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE

Publication Number WO/2006/098361
Publication Date 21.09.2006
International Application No. PCT/JP2006/305120
International Filing Date 15.03.2006
IPC
G11B 7/12 2012.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
CPC
G11B 7/121
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation ; by modifying optical properties or the physical structure; , reproducing using an optical beam at lower power ; by sensing optical properties; Record carriers therefor;
12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
121Protecting the head, e.g. against dust or impact with the record carrier
Applicants
  • 松下電器産業株式会社 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. [JP]/[JP] (AllExceptUS)
  • 朴 宏烈 BOKU, Kouretsu (UsOnly)
  • 林 秀樹 HAYASHI, Hideki (UsOnly)
  • 斉藤 陽一 SAITOH, Yohichi (UsOnly)
  • 愛甲 秀樹 AIKOH, Hideki (UsOnly)
  • 林 卓生 HAYASHI, Takao (UsOnly)
  • 高嶋 誠 TAKASHIMA, Makoto (UsOnly)
  • 山本 富夫 YAMAMOTO, Tomio (UsOnly)
  • 吉川 昭 YOSHIKAWA, Akira (UsOnly)
Inventors
  • 朴 宏烈 BOKU, Kouretsu
  • 林 秀樹 HAYASHI, Hideki
  • 斉藤 陽一 SAITOH, Yohichi
  • 愛甲 秀樹 AIKOH, Hideki
  • 林 卓生 HAYASHI, Takao
  • 高嶋 誠 TAKASHIMA, Makoto
  • 山本 富夫 YAMAMOTO, Tomio
  • 吉川 昭 YOSHIKAWA, Akira
Agents
  • 奥田 誠司 OKUDA, Seiji
Priority Data
2005-07677817.03.2005JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE
(FR) DISPOSITIF DE LECTURE OPTIQUE ET DISPOSITIF DE DISQUE OPTIQUE
(JA) 光ピックアップ装置および光ディスク装置
Abstract
(EN)
An optical pickup device (11) is provided with a light source (1) which emits optical beams, a light collecting element (5) for collecting the optical beams to an information recording medium (14), and a protruding member (101) which protrudes to a side of the information recording medium (14) further than the light collecting element (5) when the light collecting element (5) and the information recording medium (14) face each other. The protruding member (101) has a shape that gradually protruds to the side of the information recording medium (14) along a tangent direction (21) of rotation of the information recording medium (14).
(FR)
L’invention concerne un dispositif de lecture optique (11) comprenant une source lumineuse (1) qui émet des faisceaux optiques, un élément de collecte de lumière (5) destiné à recueillir les faisceaux optiques sur un support d’enregistrement d’information (14), et un élément saillant (101) faisant saillie vers un côté du support d’enregistrement d’information (14) au-delà de l’élément de collecte de lumière (5) lorsque cet élément de collecte (5) fait face au support d’enregistrement d’information (14). La forme de l’élément saillant (101) fait progressivement saillie vers le côté du support d’enregistrement d’information (14) en suivant une direction (21) de rotation tangente du support d’enregistrement d’information (14).
(JA)
 本発明の光ピックアップ装置11は、光ビームを発する光源1と、光ビームを情報記録媒体14に集光する集光素子5と、集光素子5と情報記録媒体14とが対向したときに集光素子5よりも情報記録媒体14側に突出している突出部材101とを備える。突出部材101は、情報記録媒体14の回転の接線方向21に沿って、情報記録媒体14側に徐々に突出する形状を有している。                                                                       
Also published as
EP6729141
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