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    • 7. 发明授权
    • Optical evaluation of automotive glass
    • 汽车玻璃的光学评估
    • US5343288A
    • 1994-08-30
    • US980556
    • 1992-11-23
    • Brian E. CohenWilliam M. GreenbergWilliam V. PagryzinskiBrian E. Smith
    • Brian E. CohenWilliam M. GreenbergWilliam V. PagryzinskiBrian E. Smith
    • G01N21/896G01N21/958G01N21/88
    • G01N21/958G01N2021/8887G01N2021/9586G01N2201/102
    • A system for evaluating the head-up display aperture of a vehicle windshield with respect to established optical standards, independently of the projection system with which it is to be utilized. A fixture is provided for mounting a windshield in a predetermined position. An object plate having a series of accurately spaced parallel slits therethrough is positioned so that a light source positioned behind the object plate directs a series of narrow elongated light beams corresponding to the slits against the interior surface of the windshield within the display area. A line scan camera array system scans the display area and produces signals indicative of the apparent positions of the primary and secondary images of the beams reflected by the opposite surfaces of the windshield. The signals are transmitted to and stored within a computer system as a measured data base or map. An illuminated calibration plate identical to the object plate and positioned at the ideal virtual image plane of the windshield and camera system, is similarly scanned by the line scan camera array system in the absence of a windshield. The camera produces signals indicative of the positions of the lines and transmits them to the computer system for storage as a reference or calibration data base or map.
    • 一种用于相对于建立的光学标准来评估车辆挡风玻璃的平视显示孔径的系统,独立于要利用其的投影系统。 提供了用于将挡风玻璃安装在预定位置的固定装置。 定位具有一系列精确间隔开的平行狭缝的物体板,使得位于物体板后面的光源将对应于狭缝的一系列窄的细长光束导向显示区域内挡风玻璃的内表面。 线扫描相机阵列系统扫描显示区域并产生指示由挡风玻璃的相对表面反射的光束的主图像和次图像的表观位置的信号。 将信号作为测量数据库或地图发送到计算机系统并存储在计算机系统中。 在不存在挡风玻璃的情况下,与行扫描相机阵列系统类似地扫描与对象板相同并且位于挡风玻璃和照相机系统的理想虚像平面处的照明校准板。 相机产生指示线的位置的信号,并将它们发送到计算机系统作为参考或校准数据库或地图进行存储。