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公开(公告)号：US5140359A
公开(公告)日：1992-08-18
申请号：US684499
申请日：1991-04-15
申请人： Masaki Higashihara , Ichiro Ohnuki , Akira Akashi , Terutake Kadohara , Hidehiko Fukahori , Yasuo Suda , Kenji Itoh
发明人： Masaki Higashihara , Ichiro Ohnuki , Akira Akashi , Terutake Kadohara , Hidehiko Fukahori , Yasuo Suda , Kenji Itoh
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： An auto focusing device for foreseeing-calculating lens driving data for making a lens focus on an object after a predetermined time on the basis of the past focus adjusting operation data and the latest focus detection data. A plurality of distance measuring points are read to effect distance measurements at a time. Data suitable for foreseeing calculation is found from the respective distance measuring points, and the data suitable for foreseeing calculation is specified as the latest focus detection data used for the foreseeing calculation.
摘要翻译： 一种自动对焦装置，用于根据过去的焦点调整操作数据和最近的焦点检测数据，在预定时间之后预测计算用于使镜头聚焦在物体上的透镜驱动数据。 读取多个距离测量点以一次实现距离测量。 从相应距离测量点发现适合于预测计算的数据，并将适合于预测计算的数据指定为用于预计计算的最新焦点检测数据。
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公开(公告)号：US5089843A
公开(公告)日：1992-02-18
申请号：US671649
申请日：1991-03-20
IPC分类号： G02B7/36
CPC分类号： G02B7/36
摘要： An auto focus device for predicting the position of a moving objerct after a predetermined time on the basis of past autofocus operations and driving the lens to focus on the predicted position. The predetermined time being calculated based on the discrimination of the direction of movement of the object. The predicting calculations place the lens in a closer near state rather than making the lens in focus to the moving object.
摘要翻译： 一种自动对焦装置，用于基于过去的自动对焦操作在预定时间之后预测运动对象的位置，并且驱动镜头以聚焦于预测位置。 基于对物体的移动方向的辨别来计算预定时间。 预测计算将镜头置于更接近的状态，而不是将镜头对准移动物体。
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公开(公告)号：US5081479A
公开(公告)日：1992-01-14
申请号：US467196
申请日：1990-01-18
CPC分类号： G02B7/36
摘要： This invention relates to an automatic focusing device, particular capable of foreseeing the position of an object after a predetermined future time based on the results of a plurality of past focusing operations, thus enabling the focusing to the object. An automatic focusing device is provided which executes calculations for the abovementioned foreseeing after the execution of a predetermined number of focusing operations. However, if a focused state is identified in a focusing operation in the course of the execution of the predetermined number of focusing operations, the device is adapted to disregard the first-mentioned focusing operation as if it had not been conducted and to exclude the first-mentioned focusing operation from the counting of the predetermined number of focusing operations.
摘要翻译： 本发明涉及一种自动聚焦装置，其特别是能够基于多个过去的聚焦操作的结果预测在预定的未来时间之后的物体的位置，从而能够对对象进行聚焦。 提供了一种自动对焦装置，其在执行预定数量的聚焦操作之后执行上述预见的计算。 然而，如果在执行预定数量的聚焦操作的过程中在聚焦操作中识别到聚焦状态，则该设备适于忽视首先提到的聚焦操作，就好像它未被执行，并且排除第一 来自对预定次数的聚焦操作的计数的所述聚焦操作。
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公开(公告)号：US4908645A
公开(公告)日：1990-03-13
申请号：US305162
申请日：1989-02-02
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： An automatic focusing device for foreseeing or predicting the position of object after a predetermined time, based on plural past focusing operations on the object, utilizing a function of a higher order, and driving a lens for focusing to the predicted object position. According to the present invention there is provided a correcting circuit for correcting the coefficients of the higher-order function to reduce the influence of the measuring errors contained in the past focusing results, thus constantly enabling appropriate focusing.
摘要翻译： 一种自动对焦装置，用于基于对对象的多次过去聚焦操作，利用较高阶的功能来预测或预测物体在预定时间之后的位置，并且驱动用于聚焦到预测对象位置的透镜。 根据本发明，提供了一种用于校正高阶函数的系数以减少过去聚焦结果中包含的测量误差的影响的校正电路，从而不断地实现适当的聚焦。
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公开(公告)号：US5061951A
公开(公告)日：1991-10-29
申请号：US582118
申请日：1990-09-14
CPC分类号： G02B7/36
摘要： An auto focus device which foreseeing-calculates a change in the focal plane based on the movement of an object after a predetermined time on the basis of focus detection result in the past and a latest focus detection result, and moves a lens to the foreseeing-calculated position. Whether the data used for the foreseeing calculation are data suitable for the foreseeing calculation is judged each time focus detection is effected, and when it is continuously judged that the data are data unsuitable for the foreseeing calculation, lens driving based on the foreseeing calculation is inhibited.
摘要翻译： 基于过去的焦点检测结果的预定时间之后的物体的移动和最近的焦点检测结果，预测的自动聚焦装置 - 基于物体的移动来计算焦平面的变化，并且将透镜移动到预测 - 计算位置。 在每次进行焦点检测时都判断用于预测计算的数据是否适合于预计计算的数据，并且当连续判断数据是不适合于预计计算的数据时，基于预见计算的透镜驱动被禁止 。
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公开(公告)号：US5060002A
公开(公告)日：1991-10-22
申请号：US308034
申请日：1989-02-09
IPC分类号： G02B7/36
CPC分类号： G02B7/36
摘要： A focus adjusting device which finds the lens driving amount for the position of the image plane in the future based on focus adjustment data obtained in past focus adjustment cycles includes a calculation circuit for calculating the lens driving amount or the position of the image plane in accordance with predetermined functional equations which use the data obtained in the past. The functional equation or equations used may be changed depending upon the number of times in the past over which the focus adjusting cycle was executed, or the reliability, e.g., contrast, of the auto focus signal.
摘要翻译： 基于过去的焦点调整周期中获得的焦点调整数据，在将来找到未来的图像平面的位置的透镜驱动量的对焦调整装置包括：计算电路，用于计算透镜驱动量或图像平面的位置 具有使用过去获得的数据的预定函数方程。 所使用的功能方程式或方程式可以根据执行焦点调整周期的过去次数或自动对焦信号的可靠性（例如对比度）来改变。
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公开(公告)号：US4974002A
公开(公告)日：1990-11-27
申请号：US313513
申请日：1989-02-22
CPC分类号： G02B7/36
摘要： An automatic focus adjusting device which takes into account a change in the position of the image plane of an object caused by movement of the object during the focus adjusting operation time and makes a lens in focus to the moving object. The position of the image plane of the object after the focus adjusting operation time is foreseeing-calculated with the result of a past focus adjusting operation as a factor, and the current focus adjusting operation time is foreseen in conformity with the foreseeing-calculated value, and the position of the image plane of the object is again foreseeing-calculated with the foreseen time as a factor.
摘要翻译： 一种自动对焦调节装置，其考虑了在焦点调整操作时间期间由物体的移动引起的物体的图像平面的位置的变化，并使透镜聚焦到移动物体。 聚焦调整操作时间之后的对象的图像平面的位置是以过去的焦点调整操作的结果作为因子来预测的，并且根据预计计算值来预测当前焦点调整操作时间， 并且对象的图像平面的位置再次被预测 - 以预计的时间作为因子计算。
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公开(公告)号：US5079581A
公开(公告)日：1992-01-07
申请号：US583002
申请日：1990-09-17
CPC分类号： G02B7/36
摘要： A automatic focus detecting apparatus in which a focal point position corresponding to a change in position of an object after the elapse of a predetermined time is foreseen and calculated on the basis of the result of a past focal point adjustment. In accordance with the aperture value and lens characteristic at the time of photographing, a selection is made with respect to whether the calculation is executed in a normal mode to calculate the focal point position on the basis of only the result of the detection of the focal point at the present time independently of the result of the past focal point adjustment, or the calculation is executed in the foreseeing mode. Upon photographing, if there is no need to execute the foreseeing calculation, the focal point position is calculated in the normal mode.
摘要翻译： 一种自动对焦检测装置，其中根据过去焦点调整的结果预测并计算出与经过预定时间之后的物体的位置变化相对应的焦点位置。 根据拍摄时的光圈值和透镜特性，选择是否以正常模式执行计算，仅基于焦点的检测结果来计算焦点位置 点与过去焦点调整的结果无关，或者以预见模式执行计算。 在拍摄时，如果不需要执行预计计算，则在正常模式下计算焦点位置。
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公开(公告)号：US4972221A
公开(公告)日：1990-11-20
申请号：US292567
申请日：1988-12-30
CPC分类号： G02B7/282
摘要： A camera including an imaging optical system and a focus detecting circuit for repeatedly performing a focus detection operation and outputting a focus signal representing the focusing state of the optical system at the time of each focus detection operation. A calculation circuit predicts, on the basis of previous and latest focus signals, the focusing state of the optical system a predetermined period of time after the detection of the latest focus signal. The predetermined period of time includes a shutter release time-lag. A driving circuit drives the optical system by an amount corresponding to the focusing state calculated by the calculation circuit. A releasing circuit begins a film exposure in response to the operation of a shutter release member. A release timing control circuit controls the releasing circuit so that it does not operate until a point of time which is earlier, by an amount equal to the release time-lag, than the predicted time.
摘要翻译： 一种照相机，包括成像光学系统和聚焦检测电路，用于在每个焦点检测操作时重复执行焦点检测操作并输出表示光学系统的聚焦状态的聚焦信号。 计算电路根据先前的和最新的聚焦信号，在检测到最新的聚焦信号之后预定的时间段预测光学系统的聚焦状态。 预定时间段包括快门释放时间延迟。 驱动电路将光学系统驱动与由计算电路计算的聚焦状态对应的量。 释放电路响应于快门释放构件的操作开始胶片曝光。 释放定时控制电路控制释放电路，使得它不工作，直到比预测时间早的时间点等于释放时间延迟。
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公开(公告)号：US4969003A
公开(公告)日：1990-11-06
申请号：US349532
申请日：1989-05-05
CPC分类号： G02B7/36
摘要： An auto-focus device or a camera equipped with such a device includes a focus detecting circuit for repeatedly detecting focus, in which an image forming optical system is driven on the basis of the focusing quantity detected by the focus detecting circuit. A speed computing circuit is provided for computing a speed of movement of an image plane corresponding to movement of the object on the basis of past autofocusing operation data. A drive data computing circuit is provided for predictive-computing data relating to a drive position of the image forming optical system, considering the movement of the object, on the basis of the past autofocusing operation data. A speed control circuit is provided for controlling a driving speed of the image forming optical system on the basis of the speed obtained by the speed computing circuit. A drive circuit is provided for driving the image forming optical system in one of a first mode in which a drive position of the optical system is controlled in accordance with data obtained by the drive data computing circuit without actuating the speed control circuit, and a second mode in which a driving speed of the optical system is controlled by the speed control circuit without actuating the drive position of the optical system using the drive data computing circuit. Finally, a selection circuit is provided for selecting between the first and second modes.
摘要翻译： 配备有这种装置的自动对焦装置或照相机包括用于重复检测焦点的聚焦检测电路，其中基于由聚焦检测电路检测的聚焦量来驱动图像形成光学系统。 提供速度计算电路，用于基于过去的自动对焦操作数据来计算与物体的移动相对应的图像平面的移动速度。 提供驱动数据计算电路，用于基于过去的自动对焦操作数据考虑物体的移动来预测与图像形成光学系统的驱动位置有关的数据。 提供速度控制电路，用于基于由速度计算电路获得的速度来控制图像形成光学系统的驱动速度。 提供一种用于驱动图像形成光学系统的驱动电路，其中以第一模式中的一种模式，其中根据由驱动数据计算电路获得的数据来控制光学系统的驱动位置，而不致动速度控制电路;第二模式 模式，其中光学系统的驱动速度由速度控制电路控制，而不使用驱动数据计算电路致动光学系统的驱动位置。 最后，提供选择电路用于在第一和第二模式之间进行选择。
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