Illuminating apparatus, image reading apparatus, and image forming apparatus
    3.
    发明授权
    Illuminating apparatus, image reading apparatus, and image forming apparatus 有权
    照明装置,图像读取装置和图像形成装置

    公开(公告)号:US08599447B2

    公开(公告)日:2013-12-03

    申请号:US13144874

    申请日:2009-12-18

    IPC分类号: H04N1/04

    摘要: In a light source unit (210) serving as an embodiment of an illuminating apparatus, when P is a light-emitting element pitch [mm], and H is an optical axis distance [mm] between light-emitting elements (212) and an original (G), and when, in an illuminance cycle (T) representing repetition of bright and dark areas in a main scanning direction (X) on a light-irradiated face (Gs) of the original (G) caused by the light-emitting elements (212), the light-emitting element pitch (P) and the optical axis distance (H) are set such that unevenness [%] (M) (=(L1−L2)/L3 [%]) obtained by dividing a value obtained by subtracting a minimum illuminance value (L2) from a maximum illuminance value (L1) by an average illuminance value (L3) and an inter-unevenness distance [mm] (N) which is a half cycle of the illuminance cycle (T) satisfy the relation M≦N/2−5.5, and more preferably, M≦N/2−7.5.

    摘要翻译: 在作为照明装置的实施例的光源单元(210)中,当P是发光元件间距[mm],H是发光元件(212)与发光元件(212)之间的光轴距离[mm] 原始(G),并且当在由发光元件(G)引起的原始(G)的光照射面(G)上的主扫描方向(X)上的亮区域的重复的照度周期(T)中, 发光元件(212),发光元件间距(P)和光轴距离(H)被设定为使得通过划分获得的不平坦度[%](M)(=(L1-L2)/ L3 [%] 通过从最大照度值(L1)减去作为照度周期的半周期的平均照度值(L3)和不等间距离(mm)(N)而得到的最小照度值(L2) T)满足关系M@N/2-5.5,更优选M @ N/2-7.5。

    Illuminating device, image-reading apparatus, and image-forming equipment
    7.
    发明授权
    Illuminating device, image-reading apparatus, and image-forming equipment 有权
    照明装置,图像读取装置和图像形成装置

    公开(公告)号:US08422092B2

    公开(公告)日:2013-04-16

    申请号:US12616824

    申请日:2009-11-12

    IPC分类号: H04N1/04

    摘要: An embodiment of the present invention provides an illuminating device that is disposed in an image-reading apparatus and image-forming equipment, including a light-source portion on one side; a light-source portion on the other side; and a long translucent light-guiding member having a light-discharging face long in a longitudinal direction thereof, and guiding light derived from the one light-source portion from one end face in the longitudinal direction, and light derived from the other light-source portion from the other end face in the longitudinal direction so that the guided light is irradiated to an object through the long light-discharging face; wherein the one and the other light-source portions are arranged such that positions of optical axes thereof differ from each other in a direction that is parallel to a light-irradiated face of the object and in a direction that is perpendicular to the longitudinal direction of the light-guiding member.

    摘要翻译: 本发明的实施例提供一种照明装置,其设置在图像读取装置和图像形成装置中,该装置包括:一侧的光源部; 另一侧的光源部分; 以及具有沿其长度方向长的放光面的长半透明导光部件,并且从长度方向的一个端面引导从一个光源部分导出的光,以及从另一个光源 从长边方向的另一端面部分,使得被引导的光通过长的放光面照射到物体上; 其中所述一个和另一个光源部分被布置成使得其光轴的位置在与被照射物体的光照射面平行的方向上彼此不同,并且在垂直于物体的纵向方向的方向上彼此不同 导光部件。