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    • 2. 发明授权
    • Magneto-optical storage apparatus having the relation between numerical aperture and recording medium
    • 具有数值孔径与记录介质之间关系的磁光存储装置
    • US06760279B1
    • 2004-07-06
    • US10049518
    • 2002-02-13
    • Tsuyoshi Maro
    • Tsuyoshi Maro
    • G11B1100
    • G11B11/10584G11B7/00G11B11/1058
    • An object of the present invention is to provide a film-surface light-incident type magneto-optical recording medium which is used by means of an objective lens having a large NA value and is excellent in productivity and yield, and a magneto-optical recording apparatus. According to the present invention, there is provided a magneto-optical recording medium for conducting recording or reading-out from the film surface side of the recording medium by traveling of a flying head incorporated with an objective lens having a numerical aperture (NA) of not more than 0.95 and not less than 0.8, wherein at least a reflective film, a recording layer, a transparent dielectric layer, a transparent resin layer and a lubricant layer are laminated on a substrate in that order.
    • 本发明的目的是提供一种通过具有大NA值的物镜使用并且生产率和产率优异的光面入射型磁光记录介质,以及磁光记录 仪器。 根据本发明,提供了一种磁光记录介质,用于通过与具有数值孔径(NA)的物镜结合的飞行头行进,从记录介质的膜表面侧进行记录或读出 不大于0.95且不小于0.8,其中至少反射膜,记录层,透明电介质层,透明树脂层和润滑剂层按顺序层压在基板上。
    • 6. 发明申请
    • Wavelength multiplexer/demultiplexing device
    • 波长多路复用器/解复用器
    • US20050063423A1
    • 2005-03-24
    • US10941866
    • 2004-09-16
    • Yoshiaki MinakawaTsuyoshi Maro
    • Yoshiaki MinakawaTsuyoshi Maro
    • G02B5/28G02B5/00G02B5/04G02B6/34G02B27/10H04J3/04
    • G02B6/29362G02B6/2938G02B27/145
    • For use in combining and/or splitting a 3-wavelength multiplexed light, in which if central wavelengths of the three bands are denoted as λ1, λ2 and λ3, in a relation that 0.92≦λ2/λ1≦1.08, 0.20≦λ3/λ1≦0.92 or 1.08≦λ3/λ1≦5.00, the wavelength multiplexing and demultiplexing device comprises two optical filters of different characteristics, supported by one of more optical substrates combined in a single package, wherein, when a 3-wavelength multiplexed light is led to a first filter A for splitting the 3-wavelength multiplexed light into light of a band of λ3 and a 2-wavelength multiplexed light of λ1 and λ2, and when the 2-wavelength multiplexed light is led to a second filter B for splitting the 2-wavelength multiplexed light into light of a band of λ1 and light of a band of λ2, an optical edge filter is used for the filter A and an optical band-pass filter is used for the filter B.
    • 用于组合和/或分割三波长复用光,其中如果三个波段的中心波长被表示为λ1,λ2和λ3,则以0.92 <=λ2/λ1<= 1.08,0.20 < λ3/λ1<= 0.92或1.08 <=λ3/λ1<= 5.00,波长复用和解复用器件包括两个不同特性的滤光片,由单个封装中组合的多个光学基片之一支撑,其中当3- 波长复用光被引导到第一滤光器A,用于将3波长复用光分解成λ3的波段和λ1和λ2的2波长复用光的光,并且当将2波长复用光导向第二滤波器 用于将2波长复用光分解成λ1的波段和λ2波段的光的滤波器B,滤波器A使用光学边缘滤波器,对滤波器B使用光学带通滤波器。