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    • 9. 发明授权
    • Visual axis detector using plural reflected image of a light source
    • 视觉轴检测器,使用光源的多个反射图像
    • US5225862A
    • 1993-07-06
    • US807621
    • 1991-12-13
    • Akihiko NaganoKazuki KonishiTokuichi Tsunekawa
    • Akihiko NaganoKazuki KonishiTokuichi Tsunekawa
    • A61B3/14G03B13/02
    • G03B13/02A61B3/14G03B2213/025
    • An optical apparatus which detects a visual axis using plural reflected images of a light source includes an observation device with which an observer observes an object. An image sensor is provided for generating a signal and response to an image. Optical structure is provided for forming a plurality of reflected light source images on the image sensor by reflection of light from the eye of the observer. The optical structure includes (1) an illumination assembly for projecting a light beam from at least one light source to the eye of the observer, and (2) a convergence component having at least one convergent lens for converging the light beam reflected from the eye of the observer, to produce the plurality of reflected light source images. The optical structure includes at least two light sources and/or two convergent lenses. An electrical circuit is coupled to the image sensor for generating (1) information relating to a working distance between the plurality of reflected light source images reflected from the eye, and (2) information relating to the reflected image of a front eye part, to generate information relating to a direction of the visual axis of the eye.
    • 使用光源的多个反射图像检测视轴的光学装置包括观察者观察物体的观察装置。 提供用于产生信号和对图像的响应的图像传感器。 提供光学结构用于通过反射来自观察者的眼睛的光在图像传感器上形成多个反射光源图像。 光学结构包括(1)用于将来自至少一个光源的光束投射到观察者的眼睛的照明组件,以及(2)具有至少一个收敛透镜的会聚部件,用于会聚从眼睛反射的光束 以产生多个反射光源图像。 光学结构包括至少两个光源和/或两个会聚透镜。 电路耦合到图像传感器,用于产生(1)与从眼睛反射的多个反射光源图像之间的工作距离有关的信息,和(2)与前眼部分的反射图像相关的信息, 生成与眼睛的视轴的方向有关的信息。