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    • 8. 发明申请
    • PLANAR LIGHTING DEVICE
    • 平面照明设备
    • US20110007522A1
    • 2011-01-13
    • US12886840
    • 2010-09-21
    • Osamu IWASAKI
    • Osamu IWASAKI
    • F21V8/00
    • G02B6/0068G02B6/0046G02B6/0073G02B6/0085
    • The planar lighting device includes a light guide plate having the light exit plane, two pairs of light entrance planes formed at the four sides of the light exit plane, and rear planes formed opposite to the light exit plane and inclined such that the light guide plate grows thicker toward the center thereof, a pair of main light sources and a pair of auxiliary light sources disposed opposite their respective light entrance planes to emit light to the respective light entrance planes, and illuminance distribution control unit to adjust the amount of light emitted by the main and auxiliary light sources to form a designated local illuminance distribution for any position desired in the light exit plane. The planar lighting device performs area control and line control to adjust illuminance at a light exit plane for any area desired and along any line desired, respectively.
    • 平面照明装置包括具有光出射面的导光板,形成在光出射面的四侧的两对光入射面以及与光射出面相反的倾斜面,使得导光板 朝向其中心变厚,一对主光源和一对辅助光源,与其各个入射面相对设置,以向相应的光入射面发光,以及照度分布控制单元,用于调节由光入射面发出的光量 主光源和辅助光源,以形成在光出射平面中所需的任何位置的指定局部照度分布。 平面照明装置执行区域控制和线路控制,以分别在期望的任何区域和沿所需的任何线路调节光出射面处的照度。
    • 9. 发明申请
    • PLANAR LIGHTING DEVICE
    • 平面照明设备
    • US20090103328A1
    • 2009-04-23
    • US12254527
    • 2008-10-20
    • Osamu IWASAKI
    • Osamu IWASAKI
    • F21V8/00
    • G02B6/0046G02B6/0041G02B6/0051G02B6/0053G02B6/0055G02B6/0065G02B6/0068G02B6/0085G02B6/0088G02B6/0091
    • The planar lighting device includes a light guide plate including two symmetrical, inclined planes increasingly distanced from the light exit plane with the increasing distance from the light entrance planes toward the center, a curved portion joining the inclined planes, and scattering particles dispersed therein; light sources; a housing; a securing unit securing the light sources and light guide plate to keep their distance constant, and a sliding mechanism allowing the securing unit to slide. Distance between the light entrance planes, thicknesses at the light entrance planes and at the central curved portion, its radius of curvature and taper of the inclined planes are all held within respective given ranges as well as scattering particle diameter and density, light use efficiency and middle-high ratio of the brightness distribution. A thin planar lighting device yielding high light use efficiency with a minimized brightness unevenness and a high-in-the-middle brightness distribution.
    • 平面照明装置包括导光板,该导光板包括两个对称的倾斜平面,其距离光出射平面的距离越远离光入射面朝向中心;弯曲部分接合倾斜面,散射散射粒子; 光源; 房屋; 固定单元,固定光源和导光板以保持它们的距离恒定;以及允许固定单元滑动的滑动机构。 光入射面之间的距离,光入射面和中心弯曲部的厚度,其倾斜面的曲率半径和锥度均保持在各自的给定范围内,并且散射粒径和密度,光的使用效率和 中高比例的亮度分布。 一种薄平面照明装置,其具有最小的亮度不均匀性和中高亮度分布的高光效率。
    • 10. 发明申请
    • PLANAR LIGHTING DEVICE
    • 平面照明设备
    • US20090097277A1
    • 2009-04-16
    • US12248571
    • 2008-10-09
    • Osamu IWASAKI
    • Osamu IWASAKI
    • F21V8/00
    • G02B6/0091G02B6/0046G02B6/005G02B6/0068G02B6/0085
    • A planar lighting device is capable of keeping the light entrance plane of the light guide plate spaced a constant distance from the light source and the light guide plate spaced a constant distance from the liquid crystal display panel even when the light guide plate expands, contracts or warps. This prevents break of the light source, decrease of light admission efficiency, occurrence of uneven brightness, and break of the liquid crystal display panel and permits a thin, larger, and lightweight design. The planar lighting device includes a fixing member for keeping them spaced from each other, a housing for accommodating the light source and the light guide plate, a sliding mechanism to elastically hold the fixing means against the housing while keeping the light source spaced a constant distance from the light guide plate, and a reinforcing member for reinforcing the housing.
    • 平面照明装置能够将导光板的光入射面保持与光源和导光板间隔一定距离的距离,即使在导光板膨胀,收缩或 经线。 这样可防止光源的断裂,光入射效率的降低,亮度的不均匀和液晶显示面板的断裂,并且可以实现薄型,大型和轻量化的设计。 平面照明装置包括用于保持它们彼此间隔开的固定构件,用于容纳光源和导光板的壳体,用于将固定装置弹性地保持抵靠壳体的滑动机构,同时保持光源间隔一定距离 和用于加强壳体的加强构件。