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    • 6. 发明申请
    • Optical rangefinder for an electro-active lens
    • 电动式透镜的光学测距仪
    • US20070280626A1
    • 2007-12-06
    • US11802413
    • 2007-05-22
    • Joshua N. HaddockWilliam KokonaskiDwight P. DustonRonald D. BlumScott N. Richman
    • Joshua N. HaddockWilliam KokonaskiDwight P. DustonRonald D. BlumScott N. Richman
    • G02B6/00
    • G01S11/12G01S17/08G01S17/88G02B7/32G02B7/36
    • Several devices for determining a distance of an object a user of an electro-active lens is looking at are presented. Once the distance is determined, the devices may alter the optical power of the electro-active lens to ensure that the object is correctly focused. Optical range finding is a possible means for carrying out this task. An active rangefinder may emit optical radiation from a transmitter directed at the object. The optical radiation may then be reflected off the object. The reflected optical radiation may then be received with an appropriate receiver. The received optical radiation may then be processed by appropriate circuitry to determine a distance to the object. A passive rangefinder works without a transmitter. Instead, an appropriate receiver receives ambient sources of light from the object. The received light may then be processed by appropriate circuitry to determine a distance to the object.
    • 呈现用于确定电活动透镜的用户的物体的距离的若干设备。 一旦确定了距离,装置可以改变电活动透镜的光功率,以确保对象被正确聚焦。 光学测距是进行此任务的可能手段。 有源测距仪可以发射指向物体的发射器的光辐射。 然后可以将光辐射从物体上反射出来。 然后可以用适当的接收器接收反射的光辐射。 所接收的光辐射然后可以由适当的电路来处理以确定到物体的距离。 无源测距仪在没有发射机的情况下工作。 相反,适当的接收器接收来自对象的环境光源。 然后可以通过适当的电路来处理所接收的光以确定到物体的距离。