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1. 发明授权

US4775218A Combiner alignment detector for head up display system 失效
标题翻译：用于头顶显示系统的组合器对准检测器
公开(公告)号：US4775218A
公开(公告)日：1988-10-04
申请号：US39513
申请日：1987-04-17
申请人： Robert B. Wood , Mark A. Thomas , Thomas E. Hodel , Robert E. Stockwell
发明人： Robert B. Wood , Mark A. Thomas , Thomas E. Hodel , Robert E. Stockwell
IPC分类号： G02B27/00 , G02B27/01 , G02B27/14 , H01Q1/28 , H04N5/72 , H04N7/18
CPC分类号： G02B27/01 , G02B27/0149 , G02B2027/0138 , G02B2027/014 , G02B2027/0154
摘要： A head up display system includes a combiner alignment detector (24) that determines whether the combiner (22) and a cathode-ray tube (CRT) (18) are aligned within a preassigned operational tolerance. The CRT emits display symbology that reflects off the combiner toward an observer. The combiner is secured to a combiner bracket (38) which is pivotally mounted to a mounting structure (70) having a stationary relationship with the CRT. A light emitting diode (LED) (86) and a light-sensitive linear position detector (88) are secured to the mounting structure. Light rays emanating from the LED are reflected by a mirror (34), which is secured to the combiner bracket, and strike the position detector. Pivotal motion of the combiner bracket relative to the mounting structure results in movement of the mirror relative to the LED and the position detector. The pivotal motion of the mirror causes light reflected by the mirror to strike varying locations on the position detector, which provides corresponding output signals. A processing circuit (110) receives the signals provided by the detector and provides to a control circuit (129) a signal corresponding to the alignment of the combiner and the CRT and to the position of the display symbology reflected by the combiner. The control circuit provides a warning signal whenever the information provided by the processing circuit indicates that the display symbology is not located at a preselected position.
摘要翻译：抬头显示系统包括组合器对准检测器（24），其确定组合器（22）和阴极射线管（CRT）（18）是否在预分配的操作容限内对准。 CRT发出显示符号，从组合器向观察者反射。组合器被固定到组合器支架（38），该组合器托架枢转地安装到与CRT具有静止关系的安装结构（70）。发光二极管（LED）（86）和感光线性位置检测器（88）固定到安装结构。从LED发出的光线被固定到组合器支架上的反射镜（34）反射并撞击位置检测器。组合器支架相对于安装结构的枢轴运动导致反射镜相对于LED和位置检测器的运动。反射镜的枢轴运动导致由反射镜反射的光线来触发位置检测器上的不同位置，从而提供相应的输出信号。处理电路（110）接收由检测器提供的信号，并向控制电路（129）提供对应于组合器和CRT的对准的信号以及组合器所反映的显示符号的位置。每当由处理电路提供的信息指示显示符号系统不位于预选位置时，控制电路提供警告信号。

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