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    • 10. 发明申请
    • LIGHT GUIDE, LINE-ILLUMINATING DEVICE, AND IMAGE-SCANNING DEVICE
    • 光导体,线路照明装置和图像扫描装置
    • US20060165370A1
    • 2006-07-27
    • US11354567
    • 2006-02-15
    • Hiroyuki NemotoHirohiko IwaseHidemitsu TakeuchiTakashi Kishimoto
    • Hiroyuki NemotoHirohiko IwaseHidemitsu TakeuchiTakashi Kishimoto
    • G02B6/10
    • G02B6/0038H04N1/02815H04N1/02835H04N1/02885Y10S385/901
    • The present invention provides a light guide, a line-illuminating device, and an image-scanning device that provide excellent uniformity in the amount of light produced. A light-reflecting portion comprised of spherical concave surfaces becomes a reflecting surface having spherical convex surfaces when it is seen from the inside of the light guide. Even when the incident angle of light from the light source unit is slightly offset, the reflection angle in spherical convex surfaces significantly changes, and light is reflected uniformly toward the upper surface serving as a light-emitting surface. In particular, when the fine spherical concave portions of the light-reflecting portion have a small depth, the incident light from the end surface is reflected toward the upper surface, serving as a light-emitting surface, and both side surfaces without reflecting back to the light-emitting unit side, so that uniform reflection can be achieved.
    • 本发明提供一种提供产生的光的均匀性的光导,线照明装置和图像扫描装置。 当从导光体的内部看时,由球形凹面构成的光反射部分成为具有球形凸面的反射面。 即使当来自光源单元的光的入射角稍微偏移时,球面凸面中的反射角显着变化,并且光均匀地反射到用作发光面的上表面。 特别是,当光反射部分的细小球形凹部具有较小的深度时,来自端面的入射光被反射到用作发光表面的上表面,并且两个侧表面反射回 发光单元侧,从而可以实现均匀的反射。