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    • 5. 发明申请
    • Light guide and line illuminator
    • 导光灯和线路照明器
    • US20060152805A1
    • 2006-07-13
    • US10562335
    • 2004-06-18
    • Makoto IkedaHiroyuki Nemoto
    • Makoto IkedaHiroyuki Nemoto
    • G02B5/12
    • H04N1/0318G02B6/00H04N2201/03112H04N2201/03125H04N2201/03141H04N2201/03145H04N2201/0317
    • A light guide capable of reducing the degrading of the read image, even when the document face is raised, by expanding the distribution of light intensities in the longitudinal direction in the position of the irradiated item (document position), and a line illuminator into which the light guide is incorporated. The light guide emits lights incident on an end face from an emitting face extending longitudinally, while having the lights reflected by an internal face of the guide. The sectional shape of the internal face in a direction orthogonal to the longitudinal direction is provided with first and second oval arc curved faces, first and second emitting faces, and a light scattering part formed on the focal position (or a position near the focus) of the oval on the longer axis plane of each oval. The concentrating position of lights reflected by the first curved face and the concentrating position of lights reflected by the second curved face are different from each other.
    • 通过在照射物品(原稿位置)的位置扩大长度方向的光强度分布,即使文件面上升,能够减少读取图像的劣化的导光板,以及线照明器 引入光导。 光导从发射面纵向地发射入射在端面上的光,同时具有由引导件的内表面反射的光。 内表面在与纵向正交的方向上的截面形状设置有第一和第二椭圆弧曲面,第一和第二发射面以及形成在焦点位置(或焦点附近的位置)处的光散射部分, 的椭圆形在每个椭圆的长轴平面上。 由第一曲面反射的光的集中位置和由第二曲面反射的光的集中位置彼此不同。
    • 6. 发明授权
    • Illumination device and image scanning device
    • 照明装置和图像扫描装置
    • US07555194B2
    • 2009-06-30
    • US11296866
    • 2005-12-07
    • Makoto IkedaHiroyuki NemotoTakashi KishimotoTakeshi IshimaruHirohiko IwaseHidemitsu TakeuchiTomihisa Saito
    • Makoto IkedaHiroyuki NemotoTakashi KishimotoTakeshi IshimaruHirohiko IwaseHidemitsu TakeuchiTomihisa Saito
    • G02B6/10
    • H04N1/02815H04N1/02835
    • An improved illumination device shortens a redundant area of insufficient light intensity close to a longitudinal end thereof. The device includes a casing, a bar-shaped light guide housed in the casing to cause a light-emitting surface thereof to be exposed, a light-emitting unit secured to an end section of the casing, wherein light from the light-emitting unit is introduced into the bar-shaped light guide through the end face thereof and is totally reflected within the bar-shaped light guide to be emitted through the light-emitting surface, and a shielding section provided to cover an end section of the bar-shaped light guide including the redundant area at the end section of the casing close to the light-emitting unit. A notch is formed at the end section of the bar-shaped light guide on the light-emitting surface side close to the light-emitting unit, and light from the light-emitting unit is reflected on a rear surface of the shielding section through a gap between this notch and the light-emitting unit to be introduced into the bar-shaped light guide.
    • 改进的照明装置缩短靠近其纵向端的光强度不足的冗余区域。 该装置包括壳体,容纳在壳体中以使其发光表面暴露的条形光导;固定到壳体的端部的发光单元,其中来自发光单元的光 通过其端面引入棒形导光体,并且在棒状光导中被全反射以通过发光表面发射;以及屏蔽部,其设置成覆盖棒状导光体的端部 导光体包括靠近发光单元的壳体端部处的冗余区域。 在靠近发光单元的发光面侧的棒状导光体的端部形成有切口,来自发光单元的光通过遮光部的背面被反射 该凹口与发光单元之间的间隙被引入到条形光导中。