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    • 2. 发明授权
    • System for focus detection utilizing a photoelectric sensor array
    • 利用光电传感器阵列进行焦点检测的系统
    • US4368383A
    • 1983-01-11
    • US294724
    • 1981-08-20
    • Hiroshi ShirasuAkira OgasawaraKen Utagawa
    • Hiroshi ShirasuAkira OgasawaraKen Utagawa
    • G03B3/10G01J1/16G03B3/00
    • G03B3/10
    • A light measuring device capable of amplifying the difference of the time-sequential pulse output signals from the photoelectric sensor array regardless of the magnitude of said pulse output signals, comprises optical system means; means comprising a photoelectric sensor array having a plurality of photoelectric sensors for receiving the light passing through said optical system means and generating electric signals respectively corresponding to the intensity of light received by said photoelectric sensors as time-sequential signals of a determined interval; means for generating a comparison signal of a determined magnitude related to the output level of said electric signals; and processing means adapted to receive said electric signals and said comparison signal to generate output signals related to the difference of said signals in a sequential manner.
    • 能够放大来自光电传感器阵列的时序脉冲输出信号的差异而不管所述脉冲输出信号的幅度的光测量装置包括光学系统装置; 包括具有多个光电传感器的光电传感器阵列的装置,所述光电传感器用于接收通过所述光学系统装置的光,并且产生分别对应于由所述光电传感器接收的光的强度的电信号作为确定间隔的时间序列信号; 用于产生与所述电信号的输出电平有关的确定幅度的比较信号的装置; 以及适于接收所述电信号和所述比较信号的处理装置,以顺序方式产生与所述信号的差相关的输出信号。
    • 4. 发明授权
    • Focus detecting apparatus
    • 对焦检测装置
    • US4336450A
    • 1982-06-22
    • US112350
    • 1980-01-15
    • Ken UtagawaAkira OgasawaraHiroshi ShirasuKunihisa Hoshino
    • Ken UtagawaAkira OgasawaraHiroshi ShirasuKunihisa Hoshino
    • G02B7/34G01J1/20
    • G02B7/34
    • A focus detecting apparatus comprises first means for forming phase outputs from said first and second photosensor arrays of phases respectively corresponding to the relative positions of said first and second photosensor arrays with respect to the light images thereon; second means for comparing the output corresponding to the amount of light entering said first photosensor array with the output corresponding to the amount of light entering said second photosensor array and forming a correlation output corresponding to said comparison; third means for forming outputs corresponding to the sharpness of light images on said photosensor arrays from the outputs from said arrays; and processing means for generating a synthesized output signal representing the focus state of said objective lens with respect to the object from the aforementioned phase outputs, correlation output and sharpness outputs.
    • 焦点检测装置包括:第一装置,用于从相应于所述第一和第二光电传感器阵列相对于其上的光图像的相对位置的所述第一和第二光电传感器阵列形成相位输出; 第二装置,用于将与进入所述第一光电传感器阵列的光量相对应的输出与对应于进入所述第二光电传感器阵列的光量的输出进行比较,并形成对应于所述比较的相关输出; 第三装置,用于从所述阵列的输出形成对应于所述光传感器阵列上的光图像的清晰度的输出; 以及处理装置,用于根据上述相位输出,相关输出和锐度输出,产生表示所述物镜的聚焦状态的合成输出信号。
    • 5. 发明授权
    • Focus detecting device
    • 对焦检测装置
    • US4297571A
    • 1981-10-27
    • US109282
    • 1980-01-03
    • Ken UtagawaKunihisa HoshinoHiroshi ShirasuAkira Ogasawara
    • Ken UtagawaKunihisa HoshinoHiroshi ShirasuAkira Ogasawara
    • G03B13/36G02B7/34G01J1/20
    • G02B7/34
    • In a focus detecting device having a first and second photoelectric element arrays each including a plurality of photo-electric elements disposed so as to mutually correspond in position and optical means for forming a first image and a second image of an object on the first and second arrays, respectively, there is provided first means for calculating the differences between electrical outputs related to the outputs of the mutually corresponding ones of the photoelectric elements of the first and second arrays and adding together the quantities based on said differences, second means for calculating the difference between each electrical output related to the output of each of the photoelectric elements and each electrical output related to the output of the photoelectric element spaced apart from each photoelectric element with a predetermined number of photoelectric elements interposed therebetween in the direction of arrangement of the elements of the arrays and adding together the quantities based on said differences, and third means for detecting the focused condition of the objective lens on the basis of the outputs of said first means and said second means.
    • 在具有第一和第二光电元件阵列的焦点检测装置中,每个光电元件阵列包括设置成在位置上相互对应的多个光电元件,以及用于形成第一和第二图像上的物体的第一图像和第二图像的光学装置 阵列分别提供了用于计算与第一和第二阵列的相互对应的光电元件的输出相关的电输出之间的差异的第一装置,并且基于所述差值将所述量相加在一起,第二装置用于计算 与每个光电元件的输出相关的每个电输出和与每个光电元件间隔开的光电元件的输出相关的每个电输出之间的差异与在其间插入的预定数量的光电元件沿元件的排列方向 的数组并加在一起 基于所述差异的量,以及用于基于所述第一装置和所述第二装置的输出来检测物镜的聚焦状态的第三装置。
    • 8. 发明授权
    • Apparatus for detecting displacement of optical image
    • 用于检测光学图像位移的装置
    • US4339665A
    • 1982-07-13
    • US123211
    • 1980-02-21
    • Ken UtagawaHiroshi Shirasu
    • Ken UtagawaHiroshi Shirasu
    • G01D5/26G01B11/00G01C15/00G02B7/36H01J40/14
    • G02B7/36
    • Apparatus for detecting displacement of optical image is disclosed which comprises a photosensitive element array, a first circuit, a second circuit and a phase difference measuring circuit. The photosensitive element array is composed of a number of photosensitive elements disposed on and near the focal plane of an image forming optical system through which an optical image is formed. The first circuit multiplies the electric outputs from photosensitive elements in the array by vectors whose phases sequentially increase or decrease, and then adds the products together to form an added output. The second circuit multiplies the electric outputs from photosensitive elements slightly shifted from the above elements in the same array, and then adds the products together to form a second added output. The difference in phase between the first and second added outputs is measured by the phase difference measuring circuit.
    • 公开了一种用于检测光学图像位移的装置,其包括光敏元件阵列,第一电路,第二电路和相位差测量电路。 感光元件阵列由设置在形成光学图像的图像形成光学系统的焦平面上和附近的许多感光元件组成。 第一个电路通过相位顺序增加或减小的矢量将阵列中的光敏元件的电输出相乘,然后将产品相加在一起形成一个附加的输出。 第二电路将来自与上述元件稍微偏移的光敏元件的电输出相乘在同一阵列中,然后将产品相加在一起形成第二个附加输出。 第一和第二相加输出之间的相位差由相位差测量电路测量。
    • 9. 发明授权
    • Focus detecting apparatus
    • 对焦检测装置
    • US4264810A
    • 1981-04-28
    • US972261
    • 1978-12-22
    • Ken UtagawaHiroshi Shirasu
    • Ken UtagawaHiroshi Shirasu
    • G02B27/16G02B27/40G01S1/36
    • G02B27/40G02B27/16
    • Focus detecting apparatus for an optical system including first and second image forming optical means for forming the image of an object along first and second spatially separated light paths, first and second photosensitive element arrays each comprising a plurality of photosensitive elements and producing an electrical signal representative of the intensity distribution pattern of the light incident thereon, and circuit means for detecting the focus of the optical system in accordance with the electrical signals from the first and second arrays. The circuit means includes a first processing circuit, a second processing circuit and a phase comparing circuit. The first processing circuit produces an electrical output having a phase representative of the positional relation between the first array and the intensity distribution pattern of the light incident on the first array, in accordance with the electrical signal from the first array. The second processing circuit produces an electrical signal having a phase representative of the positional relation between the second array and the intensity distribution pattern of the light incident on the second array, in accordance with the electrical signal from the second array, and the phase comparing circuit compares the phases of the electrical outputs from the first and second processing circuits and produces an output signal representative of the focus position of the optical system.
    • 一种用于光学系统的聚焦检测装置,包括:第一和第二成像光学装置,用于沿着第一和第二空间分开的光路形成物体的图像;第一和第二光敏元件阵列,每个包括多个光敏元件,并产生电信号代表 入射到其上的光的强度分布图案,以及用于根据来自第一和第二阵列的电信号检测光学系统的焦点的电路装置。 电路装置包括第一处理电路,第二处理电路和相位比较电路。 第一处理电路根据来自第一阵列的电信号产生具有表示第一阵列与入射在第一阵列上的光的强度分布图案之间的位置关系的相位的电输出。 第二处理电路根据来自第二阵列的电信号产生具有表示第二阵列与入射在第二阵列上的光的强度分布图案之间的位置关系的相位的电信号,以及相位比较电路 比较来自第一和第二处理电路的电输出的相位,并产生表示光学系统的聚焦位置的输出信号。
    • 10. 发明授权
    • Control device for automatic focusing
    • 用于自动对焦的控制装置
    • US4634851A
    • 1987-01-06
    • US831059
    • 1986-02-19
    • Akira OgasawaraSakuji WatanabeNobuhiko TeruiKen UtagawaKunihisa Hoshino
    • Akira OgasawaraSakuji WatanabeNobuhiko TeruiKen UtagawaKunihisa Hoshino
    • G03B13/36G02B7/28G02B7/34G01J1/20G03B3/10
    • G02B7/34
    • A control device for automatic focusing includes a low sharpness discriminating circuit for identifying a minimum contrast required for focus detecting function and a correlation zone discriminating circuit for determining whether an object is in or out of a correlation zone in the vicinity of the in-focus position. Output signals are supplied from the two discriminating circuits to a sequence control circuit for determining whether to continue or discontinue operation of a lens driving apparatus for driving the lens. A control device may further include a low brightness discriminating circuit the output signal of which is supplied to the sequence control circuit to immediately discontinue the operation of the lens driving apparatus when the low brightness discriminating circuit identifies a low brightness of the object, regardless of the results of other discriminations.
    • 用于自动聚焦的控制装置包括用于识别焦点检测功能所需的最小对比度的低锐度鉴别电路和用于确定对象是否在对焦位置附近的相关区域中或之外的相关区域判别电路 。 输出信号从两个识别电路提供给顺序控制电路,用于确定是否继续或停止用于驱动透镜的透镜驱动装置的操作。 控制装置可以进一步包括低亮识别电路,其低电平识别电路识别物体的低亮度时,其输出信号被提供给顺序控制电路,以立即停止透镜驱动装置的操作,而不管 其他歧视的结果。