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    • 3. 发明授权
    • Half mirror display device for instruments with improved illumination
system
    • 具有改进照明系统的仪器的半透明显示装置
    • US5938311A
    • 1999-08-17
    • US997991
    • 1997-12-24
    • Kouichi TakaoNoriaki Ohta
    • Kouichi TakaoNoriaki Ohta
    • B60K35/00B60Q3/04G01D11/28G12B11/00
    • B60Q3/042B60Q3/004B60Q3/044G01D11/28
    • A figure defining system (39, 43, 46, 57) defines a first figure as a pointer (43) on a background plate (39) and a second figure as a character plate (46) with characters and divisions, a figure illuminating system (39a, 43a, 47, 49, 55a, 51, 53) includes a rear light transmitting plate (47) for illuminating the pointer (43) as a figure element of the first figure to be visible, the rear light transmitting plate extending along a first plane, a top light transmitting plate (49) for illuminating the characters and divisions as figure elements of the second figure to be visible, the second light transmitting plate extending along a second plane crossing the first plane, and a common light source (51) disposed in a corner chamber partially defined by an end face of the rear light transmitting plate and an end face of the top light transmitting plate, and a half mirror (41) arranged between the first and second planes for displaying a combination of an optical image of the first figure, as it is transmitted through the half mirror, and an optical image of the second figure, as it is reflected on the half mirror, to have images of the figure elements combined to be visible in a display field.
    • 图形定义系统(39,43,46,57)将第一图形定义为背景板(39)上的指针(43),并且将第二图形定义为具有字符和划分的字符板(46),图形照明系统 (39a,43a,47,49,55a,51,53)包括用于照亮作为第一图形的图形元件的指针(43)可见的后透光板(47),后透光板沿着 第一平面,用于照亮作为第二图形的图形元素的字符和划分的顶部透光板(49)可见,第二透光板沿着与第一平面交叉的第二平面延伸,以及公共光源( 51)设置在由后透光板的端面部分地限定的角室和顶部透光板的端面中,以及配置在第一和第二平面之间的半反射镜(41),用于显示一个 第一个数字的光学图像,a 它通过半反射镜透射,并且第二图的光学图像被反射在半反射镜上,以使图形元素的图像组合成在显示区域中可见。