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    • 52. 发明授权
    • Hydrodynamic bearing device
    • 流体动力轴承装置
    • US07524113B2
    • 2009-04-28
    • US11501105
    • 2006-08-09
    • Tomohiro HagaJunichi Nakamura
    • Tomohiro HagaJunichi Nakamura
    • F16C32/06
    • F16C17/107F16C17/045F16C33/107
    • A hydrodynamic bearing device which can improve reliability by stabilizing a balance of dynamic pressures generated at a thrust bearing portion. The spindle motor 1 includes a hydrodynamic bearing device 4 including a shaft 41, a sleeve 42, first and second thrust flanges 41b and 41c, first and second thrust bearing portions 72 and 73 and thrust dynamic pressure generating grooves 72a and 73a. The thrust dynamic pressure generating grooves 72a and 73a are formed such that a plurality of groove portions are connected without being isolated from each other, and the groove depth becomes greater from the inner periphery toward the outer periphery.
    • 一种流体动力轴承装置,其可以通过稳定在止推轴承部分处产生的动态压力的平衡来提高可靠性。 主轴电动机1包括流体动力轴承装置4,其包括轴41,套筒42,第一和第二推力凸缘41b和41c,第一和第二推力轴承部分72和73以及推力动压产生槽72a和73a。 推力动压产生槽72a和73a形成为使得多个槽部彼此不相互连接并且槽深度从内周向外周更大。
    • 59. 发明申请
    • Polarization luminaire and projection display
    • 极化灯具和投影显示屏
    • US20070024974A1
    • 2007-02-01
    • US11514986
    • 2006-09-05
    • Yoshitaka ItohKunio YonenoJunichi Nakamura
    • Yoshitaka ItohKunio YonenoJunichi Nakamura
    • G02B27/28
    • H04N9/3105G02B27/28G02B27/283G02B27/285G02F1/13362G02F2001/13355H04N9/3167
    • A polarization luminaire is disclosed having a light source, a system of the optical integrator, a polarized light splitting device for splitting a light emitted from the light source into two kinds of polarized lights whose polarization directions are perpendicular to each other and whose traveling directions are apart from each other by an angle of less than 90 degrees, and a polarization conversion device for causing the two kinds of polarized lights to have the same polarization direction. The polarized light splitting device is placed on one of the entrance side and the outputting side of the first lens plate of the system of the optical integrator or is placed within the second lens plate. A prism beam splitter having a polarized light splitting film constituted by a thermally stable dielectric multi-layer film is suitable for the polarized light splitting device. Most of the polarized lights can be utilized by causing the polarized lights to have the same polarization direction. Further, the polarized lights, which have uniform brightness, can be emitted. Consequently, the polarization luminaire is suited to be a luminaire for use in a projection display that has liquid crystal light valves.
    • 公开了一种具有光源的偏振光源,光学积分器的系统,用于将从光源发射的光分离成偏振方向彼此垂直并且其行进方向为两种的偏振光的偏振光分离装置 彼此间隔小于90度的角度;以及偏振转换装置,用于使两种偏振光具有相同的偏振方向。 偏振光分离装置被放置在光学积分器的系统的第一透镜板的入射侧和输出侧中的一个上,或者放置在第二透镜板内。 具有由耐热介电多层膜构成的偏振光分离膜的棱镜分束器适用于偏振光分离装置。 通过使偏振光具有相同的偏振方向,可以利用大多数偏振光。 此外,可以发射具有均匀亮度的偏振光。 因此,偏振光源适用于具有液晶光阀的投影显示器中使用的照明装置。