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    • 6. 发明申请
    • OPTICAL HEAD AND OPTICAL DISK APPARATUS
    • 光头和光盘设备
    • US20080159089A1
    • 2008-07-03
    • US11964320
    • 2007-12-26
    • Takehiro HIRAMATSU
    • Takehiro HIRAMATSU
    • G11B7/00
    • G11B7/1362G11B7/1275G11B7/1353G11B7/1356G11B7/1359G11B7/1367G11B2007/0006
    • An optical head includes: a first optical element having an optical characteristic of reflecting a light of a first wavelength and transmitting lights of second and third wavelengths, on the first optical element the light of the first wavelength from a first light source being incident; and a second optical element having an optical characteristic of transmitting the light of the first wavelength, reflecting the light of the second or the third wavelength in a first polarization state and transmitting the light of the second or the third wavelength in a second polarization state, a first surface on which the light reflected by the first optical element is incident, a second surface on which the lights of the second and the third wavelengths from second and third light sources are incident, and a third surface emitting the first, the second and the third lights incident from the first and the second surfaces.
    • 光头包括:第一光学元件,其具有反射第一波长的光并且透射第二和第三波长的光的光学特性,在第一光学元件上来自入射的第一光源的第一波长的光; 以及具有透射第一波长的光的光学特性的第二光学元件,将第二或第三波长的光以第一偏振态反射并以第二偏振态透射第二或第三波长的光, 由第一光学元件反射的光入射的第一表面,来自第二和第三光源的第二和第三波长的光入射到其上的第二表面,以及发射第一,第二光和第二光的第三表面, 从第一和第二表面入射的第三个光。
    • 9. 发明授权
    • Optical head and optical disk apparatus
    • 光头和光盘装置
    • US07848210B2
    • 2010-12-07
    • US11964320
    • 2007-12-26
    • Takehiro Hiramatsu
    • Takehiro Hiramatsu
    • G11B7/12
    • G11B7/1362G11B7/1275G11B7/1353G11B7/1356G11B7/1359G11B7/1367G11B2007/0006
    • An optical head includes: a first optical element having an optical characteristic of reflecting a light of a first wavelength and transmitting lights of second and third wavelengths, on the first optical element the light of the first wavelength from a first light source being incident; and a second optical element having an optical characteristic of transmitting the light of the first wavelength, reflecting the light of the second or the third wavelength in a first polarization state and transmitting the light of the second or the third wavelength in a second polarization state, a first surface on which the light reflected by the first optical element is incident, a second surface on which the lights of the second and the third wavelengths from second and third light sources are incident, and a third surface emitting the first, the second and the third lights incident from the first and the second surfaces.
    • 光头包括:第一光学元件,其具有反射第一波长的光并且透射第二和第三波长的光的光学特性,在第一光学元件上来自入射的第一光源的第一波长的光; 以及具有透射第一波长的光的光学特性的第二光学元件,将第二或第三波长的光以第一偏振态反射并以第二偏振态透射第二或第三波长的光, 由第一光学元件反射的光入射的第一表面,来自第二和第三光源的第二和第三波长的光入射到其上的第二表面,以及发射第一,第二光和第二光的第三表面, 从第一和第二表面入射的第三个光。