公开(公告)号：AT441183T

公开(公告)日：2009-09-15

申请号：AT01110301

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：DE60018735D1

公开(公告)日：2005-04-21

申请号：DE60018735

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135 ,  G11B7/125

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：AT291269T

公开(公告)日：2005-04-15

申请号：AT01121549

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135 ,  G11B7/125

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：HK1026977A1

公开(公告)日：2001-03-02

申请号：HK00106050

申请日：2000-09-25

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G02B3/10 ,  G02B5/18 ,  G11B7/1374 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135 ,  G11B ,  G02B

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：DE602004026021D1

公开(公告)日：2010-04-29

申请号：DE602004026021

申请日：2004-11-01

Applicant: KONICA MINOLTA OPTO INC

Inventor： IKENAKA KIYONO ,  SAITO SHINICHIRO ,  ATARASHI YUICHI

IPC: G11B7/00 ,  G11B7/125 ,  G11B7/135

Abstract: An optical pickup device wherein at least a high density disc such as HD-DVD is compatible with DVD, and securing an amount of light is compatible with correction of chromatic aberration. And a correcting element representing an optical system used for the aforementioned optical pickup device.

公开(公告)号：DE60042812D1

公开(公告)日：2009-10-08

申请号：DE60042812

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：DE60034826T2

公开(公告)日：2008-01-31

申请号：DE60034826

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：DE60034969T2

公开(公告)日：2008-01-10

申请号：DE60034969

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：DE60034969D1

公开(公告)日：2007-07-05

申请号：DE60034969

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.

公开(公告)号：DE60034825D1

公开(公告)日：2007-06-21

申请号：DE60034825

申请日：2000-01-18

Applicant: KONICA MINOLTA OPTO INC

Inventor： ARAI NORIKAZU ,  KOJIMA TOSHIYUKI ,  KIRIKI TOSHIHIKO ,  OTA KOHEI ,  SAITO SHINICHIRO

IPC: G11B7/1374 ,  G02B3/10 ,  G02B5/18 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

Abstract: An optical pickup apparatus for reproducing information from an optical information recording medium or for recording information onto an optical information recording medium, is provided with a first light source (11) for emitting first light flux having a first wavelength; a second light source (12) for emitting second light flux having a second wavelength, the first wavelength being different from the second wavelength; a converging optical system (1) having an optical axis and a diffractive portion, and a photo detector (30); wherein in case that the first light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the first light flux is greater than that of any other ordered diffracted ray of the first light flux, and in case that the second light flux passes through the diffractive portion to generate at least one diffracted ray, an amount of n-th ordered diffracted ray of the second light flux is greater than that of any other ordered diffracted ray of the second light flux, where n stands for an integer other than zero.