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    • 1. 发明授权
    • Transparent substrate having rain sensor
    • 具有雨水传感器的透明基板
    • US5991049A
    • 1999-11-23
    • US120142
    • 1998-07-22
    • Shuhei TanakaTadashi KoyamaKeiji TsunetomoHideki Imanishi
    • Shuhei TanakaTadashi KoyamaKeiji TsunetomoHideki Imanishi
    • G01N21/17B60S1/08G01W1/14G01N21/55
    • B60S1/0822B60S1/0833B60S1/0881
    • A front windshield 1 having a rain sensor 2 for detecting the adhesion or presence of water drops W upon one side surface thereof, depending upon variation in an amount of reflected light, wherein the rain sensor 2 comprises: a light emitting element 7 for introducing a sensing light beam into the front windshield 1; a light receiving element 8 for detecting the light beam which is propagated by total internal reflection within the front windshield 1; and diffraction gratings 5, 6 formed on a surface of a glass substrate 4, through which the light emitting element 7 and the light receiving element 8 are provided on glass surface, whereby the rain sensor 2 is adhered on the other side surface of the front windshield 1 by means of an adhesive material 3 having a refractive index equivalent to that of the glass substrate 4.
    • 一种前挡风玻璃1,其具有雨水传感器2,用于根据反射光量的变化来检测其一个侧表面上的水滴W的粘附或存在,其中雨水传感器2包括:发光元件7,用于引入 将光束传感到前挡风玻璃1; 用于检测在前挡风玻璃1内通过全内反射传播的光束的光接收元件8; 和形成在玻璃基板4的表面上的衍射光栅5,6,发光元件7和受光元件8通过该衍射光栅5设置在玻璃表面上,由此雨传感器2粘附在前面的另一侧面上 挡风玻璃1通过具有与玻璃基板4的折射率相当的折射率的粘合材料3。
    • 2. 发明授权
    • Water drop detector on transparent substrate
    • 水滴检测器在透明基板上
    • US5998782A
    • 1999-12-07
    • US191188
    • 1998-11-13
    • Tadashi KoyamaKeiji TsunetomoShuhei TanakaHideki Imanishi
    • Tadashi KoyamaKeiji TsunetomoShuhei TanakaHideki Imanishi
    • G01N21/47B60S1/08G01N21/17G02B6/42
    • B60S1/0822B60S1/0837B60S1/0881B60S1/0888
    • A windshield (transparent substrate) 1 having the function of detecting the presence of water drops W upon one side surface of the windshield depending upon variations in an amount of reflected light, comprising a rain sensor provided on the other side surface of the windshield, which further comprises: light emitting means 6 for guiding light into the windshield 1; light receiving means 7 for detecting the light which is reflected within the windshield 1; and, light shielding members 10 and 11 provided on the other side surface of the windshield 1 opposing the light emitting means 6 and the light receiving means 7, respectively; wherein the light shielding member 10 shields the light emitted from the light emitting means 6 at an incident angle less than a critical angle at which total internal reflection occurs at a boundary surface between air and the windshield 1, while the other shielding member 11 shields outside ambient light incident upon the light receiving means 7.
    • 具有根据反射光量的变化检测挡风玻璃的一个侧面上存在水滴W的功能的挡风玻璃(透明基板)1,其包括设置在挡风玻璃的另一侧表面上的雨水传感器, 还包括:用于将光引导到挡风玻璃1中的发光装置6; 用于检测在挡风玻璃1内被反射的光的光接收装置7; 以及分别设置在挡风玻璃1的与发光装置6和光接收装置7相对的另一侧表面上的遮光构件10和11; 其中遮光构件10以小于在空气和挡风玻璃1之间的边界面处发生全内反射的临界角的入射角遮蔽从发光装置6发射的光,而另一屏蔽构件11屏蔽外部 入射到光接收装置7的环境光。
    • 3. 发明授权
    • Multilayer, cushioned liquid drop detector
    • 多层缓冲液滴检测仪
    • US6147753A
    • 2000-11-14
    • US307756
    • 1999-05-10
    • Tadashi KoyamaKeiji TsunetomoShuhei TanakaHideki Imanishi
    • Tadashi KoyamaKeiji TsunetomoShuhei TanakaHideki Imanishi
    • G01V8/10B60S1/08G01N21/17G01N21/41G01N21/00
    • B60S1/0888B60S1/0822B60S1/0837
    • A liquid drop detector which may be fixed or attached by a simple operation, without machining, to a window glass, includes a light emitting element, a light receiving element and light guiding bodies wherein the light emitted by the light emitting element is introduced through a diffraction grating into a first light guiding body and after undergoing total internal reflection within the first light guiding body it is introduced through a silicon member, through an elongated light guiding body, through an additional silicon member, and into a windshield. After traveling within the windshield by total internal reflection, the light passes through a silicon member, reenters the elongated light guiding body, passes through another silicon member and enters a second light guiding body which guides it to a receiver. When rain drops adhere to the outside surface of the windshield at points corresponding to the total internal reflection points at the outer surface of the windshield, the light will leak out of the windshield. As a result of this, the amount of light received by the light receiving element is lessened, thereby providing for detection of the adhesion of rain drops based thereupon so as to output a signal for driving a device such as the windshield wiper.
    • 可以通过简单的操作固定或附加到液体滴检测器,而不加工到窗玻璃上,包括发光元件,光接收元件和导光体,其中由发光元件发射的光通过 衍射光栅转换成第一导光体,并且在第一导光体中经历全内反射之后,其通过硅构件,通过细长的导光体通过附加的硅构件引入挡风玻璃中。 通过全内反射在挡风玻璃中行进后,光通过硅构件,重新进入细长导光体,穿过另一个硅构件并进入导向体的第二导光体。 当雨滴在挡风玻璃外表面上与内部全反射点相对应的点处附着在挡风玻璃的外表面上时,光将从挡风玻璃漏出。 其结果是减轻了光接收元件所接收的光量,从而提供了基于雨滴的粘附的检测,从而输出用于驱动诸如挡风玻璃刮水器的装置的信号。
    • 6. 发明授权
    • Adhering substance detector and controller using the same
    • 粘附物质检测器和使用它的控制器
    • US06919961B2
    • 2005-07-19
    • US10276131
    • 2001-05-10
    • Keiji TsunetomoFumitoshi KobayashiHideki ImanishiHarunobu YoshidaMasahide WakisakaTatsumi Tokuda
    • Keiji TsunetomoFumitoshi KobayashiHideki ImanishiHarunobu YoshidaMasahide WakisakaTatsumi Tokuda
    • B60S1/08G01N21/17G01N21/55
    • G01N21/552B60S1/0818B60S1/0822B60S1/0837B60S1/0888
    • An object sensor is provided, which has a high object detection rate with respect to an object such as a raindrop adhering to a detection surface, and which is capable of detecting the presence/absence of an object with a high sensitivity. A light source 10, a detection surface 110, a focusing lens 40, and a plurality of photodetecting elements of a photodetecting unit 50 form a focusing system of equal magnification that is capable of catching an image in a size smaller than an object to be detected. Light emitted from the light source 10 is incident on the detection surface 110 via a prism 20 at a predetermined incident angle. Without a raindrop 120, the total internal reflection condition is satisfied as shown by a path 140 of a beam, so that the beam is subjected to the total internal reflection. Then, the beam passes through a prism 30, and is focused on a photodetecting surface of the photodetecting unit 50 by the focusing lens 40. On the other hand, with a raindrop 120, the total internal reflection condition is not satisfied as shown by a trail 130 of a beam, so that the beam passes therethrough and is not focused on the photodetecting unit 50. A difference in signal level is determined on the photodetecting element basis, so that an object covering the detection surface 110 is detected.
    • 提供了一种对象传感器,其具有相对于粘附到检测表面上的诸如雨滴的物体的高物体检测率,并且能够以高灵敏度检测物体的存在/不存在。 光源10,检测面110,聚焦透镜40以及受光部50的多个受光元件构成能够捕捉小于被检测物的尺寸的图像的等倍率的聚焦系统 。 从光源10发射的光以预定的入射角通过棱镜20入射在检测面110上。 没有雨滴120,如束的路径140所示,满足全内反射条件,使得光束经受全内反射。 然后,光束通过棱镜30,并且通过聚焦透镜40聚焦在光电检测单元50的受光面上。 另一方面,利用雨滴120,如束的轨迹130所示,不满足全内反射条件,使得光束通过,并且不聚焦在光电检测单元50上。 在光检测元件的基础上确定信号电平的差异,从而检测覆盖检测面110的物体。