公开(公告)号：US4492449A

公开(公告)日：1985-01-08

申请号：US499491

申请日：1983-05-31

申请人： Kenichi Oinoue ,  Asao Hayashi ,  Junichi Nakamura ,  Masatoshi Ida ,  Masahiro Aoki ,  Kenji Fukuoka

发明人： Kenichi Oinoue ,  Asao Hayashi ,  Junichi Nakamura ,  Masatoshi Ida ,  Masahiro Aoki ,  Kenji Fukuoka

IPC分类号： G03B13/36 ,  G02B7/34 ,  G02B7/38 ,  G11B7/09 ,  G03B7/099

CPC分类号： G02B7/38

摘要： In a method and apparatus for detecting focus condition of an imaging optical system, the focus condition is detected in accordance with a combination of two different detection methods such as an image sharpness detection and an image lateral shift detection by using first and second light receiving element arrays for the image sharpness detection and a third light receiving element array for the image lateral shift detection. For making the construction of the apparatus compact and simple, these light receiving element arrays are formed on the same semiconductor substrate. Further a light flux dividing prism and a lenticular lens array are formed integrally with each other. According to the focus detection method of the present invention, it is possible to detect the focus condition for various kinds of subjects accurately over a wide range by using both the image sharpness detection and image lateral shift detection even in a range near an in-focus position.

摘要翻译： 在用于检测成像光学系统的聚焦条件的方法和装置中，根据两种不同的检测方法（诸如图像清晰度检测和图像横向偏移检测）的组合，通过使用第一和第二光接收元件 用于图像锐度检测的阵列和用于图像横向移位检测的第三光接收元件阵列。 为了使设备的结构紧凑且简单，这些光接收元件阵列形成在相同的半导体衬底上。 此外，光束分割棱镜和双凸透镜阵列彼此一体地形成。 根据本发明的焦点检测方法，即使在接近焦点的范围内也可以通过使用图像锐度检测和图像横向偏移检测两者在宽范围内精确地检测各种被摄体的聚焦条件 位置。

公开(公告)号：US4443079A

公开(公告)日：1984-04-17

申请号：US426898

申请日：1982-09-29

申请人： Kenichi Oinoue ,  Asao Hayashi ,  Masatoshi Ida ,  Masahiro Aoki ,  Junichi Nakamura ,  Kenji Fukuoka

发明人： Kenichi Oinoue ,  Asao Hayashi ,  Masatoshi Ida ,  Masahiro Aoki ,  Junichi Nakamura ,  Kenji Fukuoka

IPC分类号： G03B13/36 ,  G02B7/34 ,  G02B27/10 ,  G03B3/00

CPC分类号： G02B27/1066 ,  G02B27/126 ,  G02B7/343

摘要： A focus condition of an objective lens is detected on the basis of a lateral shift of two images formed by first and second light fluxes which are transmitted through right- and left-hand halves of the lens, respectively. In order to separate the first and second light fluxes, there is arranged an array of triangle prisms each having first and second surfaces which are inclined symmetrically with respect to the optical axis of lens by a critical angle so that one of the light fluxes is transmitted through the one of the surfaces, but is totally reflected by the other surface of each prism. The first and second light fluxes transmitted through the prisms are received by an array of light receiving elements in such a manner that the first and second light fluxes are selectively received by odd and even numbered light receiving elements, respectively.

摘要翻译： 基于通过透镜的右半部和左半部分分别透射的第一和第二光束形成的两个图像的横向偏移来检测物镜的聚焦条件。 为了分离第一和第二光束，布置有三角形棱镜阵列，每个棱镜具有相对于透镜的光轴对称地倾斜临界角度的第一和第二表面，使得光束中的一个被透射 通过一个表面，但是被每个棱镜的另一个表面全部反射。 通过棱镜透射的第一和第二光束被光接收元件阵列接收，使得第一和第二光束分别被奇数和偶数编号的光接收元件选择性地接收。

公开(公告)号：US4563705A

公开(公告)日：1986-01-07

申请号：US444155

申请日：1982-11-24

申请人： Kenichi Oinoue ,  Masahiro Aoki ,  Masatoshi Ida ,  Junichi Nakamura ,  Asao Hayashi

发明人： Kenichi Oinoue ,  Masahiro Aoki ,  Masatoshi Ida ,  Junichi Nakamura ,  Asao Hayashi

IPC分类号： G03B13/36 ,  G02B7/09 ,  G03B3/10 ,  H04N5/232 ,  H04N3/26

CPC分类号： G03B3/10 ,  H04N5/23212

摘要： In order to effect an automatic focus control in an image pick-up apparatus, a photography lens for forming an image of the object onto a two-dimensional solid state image sensing device is arranged in a fixed position, while the two-dimensional solid state image sensing device is arranged movably in the optical axis direction of the photography lens, and the image sensing device is moved in accordance with a focusing error signal detected by a focusing condition detecting circuit having an additional light receiving element mounted on the same substrate as the image sensor but discrete from and operating independently of the image sensor. Since the light and small solid state image sensing device is moved for the focus control instead of the heavy and large photography lens, it is possible to perform the focus control in a prompt manner and to make a mechanism for driving the image sensing device small and simple.

摘要翻译： 为了在摄像装置中实现自动聚焦控制，将用于将物体的图像形成到二维固态图像感测装置的摄影透镜布置在固定位置，而二维固态 图像感测装置在摄影镜头的光轴方向上可移动地设置，并且图像感测装置根据由聚焦条件检测电路检测到的聚焦误差信号移动，该聚焦条件检测电路具有安装在与该摄影镜头相同的衬底上的附加光接收元件 图像传感器，但独立于图像传感器离散和操作。 由于光和小的固态图像感测装置被移动以用于聚焦控制而不是重的和大的摄影镜头，所以可以迅速地执行聚焦控制，并且使得用于驱动图像感测装置的机构较小， 简单。

公开(公告)号：US4453818A

公开(公告)日：1984-06-12

申请号：US446255

申请日：1982-12-02

申请人： Asao Hayashi ,  Kenichi Oinoue ,  Masahiro Aoki ,  Junichi Nakamura ,  Masatoshi Ida

发明人： Asao Hayashi ,  Kenichi Oinoue ,  Masahiro Aoki ,  Junichi Nakamura ,  Masatoshi Ida

IPC分类号： G03B13/36 ,  G02B7/38 ,  G03B3/10

CPC分类号： G03B3/10

摘要： A method of automatically adjusting focus conditions of photographic optical system is disclosed. In the method at least a part of optical image formed on a predetermined focal plane by an optical system is projected onto first and second photocell arrays in the front and the rear of a surface conjugated to the predetermined focal plane, and onto at least one of other photocell arrays arranged between the first and second photocell arrays. Outputs of first, second and other photocell arrays are arithmetically operated in accordance with respective given evaluation functions thereby obtaining first, second and other evaluation values. These evaluation values are compared with each other and the optical system is intermittently shifted in the optical axis direction with first or second moving step in the case of decision from the compared result that the optical system is positioned within or outside a predetermined range including the in-focused position.

摘要翻译： 公开了一种自动调整照相光学系统的聚焦条件的方法。 在该方法中，通过光学系统在预定焦平面上形成的光学图像的至少一部分被投影到与预定焦平面共轭的表面的前后的第一和第二光电池阵列上，并且至少一个 布置在第一和第二光电池阵列之间的其它光电池阵列。 第一，第二和其它光电管阵列的输出根据各自给定的评估功能进行算术运算，从而获得第一，第二和其它评估值。 将这些评估值相互比较，并且在从比较结果判定出光学系统位于包含in的预定范围内或之外的情况下，通过第一或第二移动步骤在光轴方向间歇地移动光学系统 聚焦位置。

公开(公告)号：US4562345A

公开(公告)日：1985-12-31

申请号：US448038

申请日：1982-12-08

申请人： Masahiro Aoki ,  Junichi Nakamura ,  Masatoshi Ida ,  Kenichi Oinoue ,  Asao Hayashi

发明人： Masahiro Aoki ,  Junichi Nakamura ,  Masatoshi Ida ,  Kenichi Oinoue ,  Asao Hayashi

IPC分类号： G03B3/10 ,  G01J1/20

CPC分类号： G03B3/10

摘要： A method and apparatus for detecting focus conditions of a photographic optical system is disclosed. The invention comprises a member for dividing the wavefront of a light beam from a photographic optical system in an image space thereof, a first light receiving device including two photocell arrays provided in the front and the rear of a surface conjugated to a predetermined focal plane of the optical system, and a second light receiving device including at least one photocell array provided at a surface conjugated to one of the photocell arrays in the first light receiving device. A first signal representing horizontal shift of an optical image is detected based on outputs of at least one photocell array in the second light receiving device and one photocell array in the first light receiving device having a relation conjugated to the photocell array in the second light receiving device. A second signal representing defocused amount of the image is detected based on outputs of two photocell arrays in the first light receiving device thereby detecting focus conditions by the first and the second signals.

摘要翻译： 公开了一种用于检测照相光学系统的聚焦条件的方法和装置。 本发明包括用于在其图像空间中分离来自照相光学系统的光束的波前的部件，第一光接收装置，其包括设置在与预定焦平面共轭的表面的前后的两个光电管阵列 光学系统和第二光接收装置，其包括设置在与第一光接收装置中的光电池阵列之一共轭的表面处的至少一个光电池阵列。 基于第二光接收装置中的至少一个光电管阵列的输出和第一光接收装置中的第一光接收装置中具有与第二光接收中的光电管阵列共轭的关系的光电管阵列，检测表示光学图像的水平移动的第一信号 设备。 基于第一光接收装置中的两个光电管阵列的输出检测表示散焦量的图像的第二信号，从而通过第一和第二信号检测对焦条件。

公开(公告)号：US4483602A

公开(公告)日：1984-11-20

申请号：US362993

申请日：1982-03-29

申请人： Masahiro Aoki ,  Kenichi Oinoue ,  Masatoshi Ida ,  Asao Hayashi

发明人： Masahiro Aoki ,  Kenichi Oinoue ,  Masatoshi Ida ,  Asao Hayashi

IPC分类号： G02B7/28 ,  G02B7/36 ,  G03B7/08 ,  G03B17/20

CPC分类号： G02B7/36

摘要： In a single-lens reflex camera having an objective lens, a focusing screen and a view finder, a photodetector array is arranged to receive a central part of an object image formed by the objective lens and a focusing condition of the objective lens is detected by calculating an evaluation function from image signals supplied from the photodetectors. A presetting dial for selecting given photodetectors whose image signals are used for detecting the focusing condition is provided at such a position that a part of the dial is exposed to the outside through an opening formed in a rear wall of a camera body at a position underneath a film winding lever. A light emitting diode array is provided on the focusing screen so as to be seen by a user through the view finder. Only desired light emitting diodes are lighted on under the control of a signal supplied by the dial to indicate the region of the photodetector array which is used for detecting the focusing condition.

摘要翻译： 在具有物镜，聚焦屏和取景器的单镜头反光相机中，光电检测器阵列被布置成接收由物镜形成的物体图像的中心部分，并且物镜的聚焦状态由 根据从光电检测器提供的图像信号计算评估函数。 用于选择其图像信号用于检测聚焦条件的给定光电检测器的预设拨盘设置在这样的位置处，即通过形成在照相机主体的后壁的下方的位置处的表面暴露于外部的位置 一个电影绕线杆。 在聚焦屏幕上提供发光二极管阵列，以便用户通过取景器看到。 在由表盘提供的信号的控制下，仅点亮所需的发光二极管，以指示用于检测聚焦条件的光电检测器阵列的区域。

公开(公告)号：US4562346A

公开(公告)日：1985-12-31

申请号：US494388

申请日：1983-05-13

申请人： Asao Hayashi ,  Kenichi Oinoue ,  Masahiro Aoki ,  Masatoshi Ida

发明人： Asao Hayashi ,  Kenichi Oinoue ,  Masahiro Aoki ,  Masatoshi Ida

IPC分类号： G03B13/36 ,  G02B7/34 ,  G11B7/09 ,  G01J1/20

CPC分类号： G03B7/0807 ,  G03B2217/005

摘要： In a camera, a focus condition of an objective lens system is automatically detected in accordance with a combination of two different type detection methods. A light flux emanating from the objective lens system is divided into two light fluxes by means of a prism having a half mirror and a reflecting mirror and a first light flux transmitted through the half mirror is received by a first light receiving element array via a lenticular lens array and a second light flux reflected by the half mirror and reflecting mirror successively is directly received by a second light receiving element array. The lenticular lens array is so arranged that an exit pupil of the objective lens and the first light receiving element array are conjugated with each other and thus divided images of the exit pupil are projected upon respective elements of each pair of adjacent light receiving elements. At first, illumination signals supplied from the first image receiving element array are processed to derive a first evaluation value on the basis of an image lateral shift detection to indicate roughly a focal condition of the objective lens system. After the objective lens system has driven near the best focus position, illumination signals supplied from the first and second light receiving element arrays are processed to derive a second evaluation value on the basis of an image sharpness detection to indicate finely the focal condition of the objective lens system.

摘要翻译： 在相机中，根据两种不同类型的检测方法的组合自动地检测物镜系统的聚焦条件。 从物镜系统发出的光束通过具有半反射镜和反射镜的棱镜被分成两个光束，透过半反射镜的第一光束通过透镜被第一光接收元件阵列接收 由半反射镜和反射镜反射的透镜阵列和第二光束被第二光接收元件阵列直接接收。 双凸透镜阵列被布置成使得物镜的出射光瞳和第一光接收元件阵列彼此共轭，从而将出射光瞳的分割图像投影到每对相邻的光接收元件的相应元件上。 首先，处理从第一图像接收元件阵列提供的照明信号，以基于图像横向偏移检测来导出第一评估值，以大致指示物镜系统的焦点状态。 在物镜系统接近最佳对焦位置之后，从第一和第二光接收元件阵列提供的照明信号被处理以基于图像清晰度检测导出第二评估值，以精确地指出物镜的焦点状况 镜头系统

公开(公告)号：US4503467A

公开(公告)日：1985-03-05

申请号：US361436

申请日：1982-03-24

申请人： Masatoshi Ida ,  Kenichi Oinoue ,  Masahiro Aoki ,  Asao Hayashi

发明人： Masatoshi Ida ,  Kenichi Oinoue ,  Masahiro Aoki ,  Asao Hayashi

IPC分类号： H03M1/56 ,  G02B7/36 ,  G02F7/00 ,  H03M1/12 ,  H03M1/34 ,  H04N5/232 ,  H04N5/243 ,  H04N3/12 ,  G06K9/38

CPC分类号： H03M1/1028 ,  H04N5/23212 ,  H04N5/243 ,  H03M1/123 ,  H03M1/56

摘要： In an analog-digital converting apparatus including a row of light receiving units with each unit having a light receiving element and a sample-hold circuit, a counter for producing a digital signal whose value is increased successively, a digital-analog converter for receiving the digital signal and producing an analog reference signal whose amplitude increases successively from a lower limit value to an upper limit value in step-shaped manner, comparators for comparing the output signals of the light receiving units with said analog reference signal, respectively, memories for receiving the digital signal and controlled by the comparators, respectively to store instantaneous digital values when the corresponding comparators change their states, there is provided a second light receiving unit having substantially the same construction as that of the first mentioned light receiving unit except that a light receiving element provided therein is covered with a light shielding mask so as to produce an output equivalent to a dark current component of the light receiving element, the output of which unit is used as a lower limit voltage source for said digital-analog converter. The apparatus may further include a third light receiving unit having substantially the same as that of the first light receiving unit except that the light receiving element is removed and the input of the sample-hold circuit is connected to a supply voltage so as to produce an output equivalent to a saturation value of the light receiving element, the output of which unit is used as an upper limit voltage source for the digital-analog converter.

摘要翻译： 在包括具有光接收元件和采样保持电路的每个单元的一行光接收单元的模拟数字转换设备中，用于产生值连续增加的数字信号的计数器，用于接收该数字模拟转换器的数模转换器， 数字信号，并产生其幅度以逐步方式从下限值连续上升到上限值的模拟参考信号，用于将光接收单元的输出信号与所述模拟参考信号分别比较用于接收的存储器 数字信号并由比较器分别控制，以在对应的比较器改变其状态时存储瞬时数字值，提供具有与第一光接收单元基本相同的结构的第二光接收单元，除了光接收 设置在其中的元件被遮光掩模覆盖 以产生相当于光接收元件的暗电流分量的输出，该单元的输出用作所述数模转换器的下限电压源。 除了光接收元件被去除并且采样保持电路的输入连接到电源电压之外，该设备还可以包括具有与第一光接收单元基本相同的第三光接收单元，以便产生 输出相当于光接收元件的饱和值，该单位的输出用作数模转换器的上限电压源。

公开(公告)号：US4540881A

公开(公告)日：1985-09-10

申请号：US361435

申请日：1982-03-24

申请人： Asao Hayashi ,  Masahiro Aoki ,  Kenichi Oinoue ,  Masatoshi Ida

发明人： Asao Hayashi ,  Masahiro Aoki ,  Kenichi Oinoue ,  Masatoshi Ida

IPC分类号： G02B7/36 ,  G02B7/38 ,  G01J1/20

CPC分类号： G02B7/38

摘要： A method of detecting focusing conditions used for optical machinery is disclosed. The focusing conditions of an optical image projected onto photodetector arrays arranged on both sides of the focal plane with a certain optical distance are detected based on an evaluation function representing a sum of absolute values of differences between output signals of adjacent photodetectors. When a value of a first evaluation function represented by the largest absolute value is less than a predetermined threshold a second evaluation function represented by a sum of the maximum and next largest absolute values is used thereby detecting the focusing conditions for a graded image.

摘要翻译： 公开了一种检测用于光学机械的聚焦条件的方法。 基于表示相邻光电检测器的输出信号之间的差的绝对值之和的评估函数，检测投影到具有特定光学距离的焦平面两侧的光电检测器阵列上的光学图像的聚焦条件。 当由最大绝对值表示的第一评估函数的值小于预定阈值时，使用由最大和最大绝对值的和表示的第二评估函数，从而检测分级图像的聚焦条件。

公开(公告)号：US4720824A

公开(公告)日：1988-01-19

申请号：US808824

申请日：1985-12-13

申请人： Asao Hayashi

发明人： Asao Hayashi

IPC分类号： G06K7/016 ,  G06K7/10 ,  G06K7/14 ,  G11B7/0033 ,  G11B7/085 ,  G11B7/12 ,  G11B7/135 ,  G02B6/32 ,  G11B7/09

CPC分类号： G11B7/1384 ,  G06K7/0163 ,  G06K7/10594 ,  G06K7/14 ,  G11B7/0033 ,  G11B7/08558 ,  G11B7/1245

摘要： An information reading apparatus for reading information includes a board having a plane optical waveguide and a light source on the board. Light beam emitted from the source is conducted by a first optical system to a predetermined direction through the waveguide. Part of the light beam is deffracted toward a second optical system by a surface elastic wave region formed in the waveguide. The second optical system conducts the light beam to an information recording region of a card through the waveguide and leads reflected light beam from the information recording region to a photodetector. The light beam not diffracted by the elastic wave region is conducted to a third optical system formed in the waveguide. The system conducts the light beam to a synchronizing signal recording region of the card and leads reflected light beam from the synchronizing signal recording region to a photodetector.

摘要翻译： 用于读取信息的信息读取装置包括在板上具有平面光波导和光源的板。 从源极发射的光束通过第一光学系统通过波导进行到预定方向。 光束的一部分被形成在波导管中的表面弹性波区域朝向第二光学系统分离。 第二光学系统通过波导将光束传导到卡的信息记录区域，并将来自信息记录区域的反射光束引导到光电检测器。 没有被弹性波区域衍射的光束被传导到形成在波导管中的第三光学系统。 系统将光束传导到卡的同步信号记录区域，并将来自同步信号记录区域的反射光束引导到光电检测器。