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公开(公告)号：US20190025544A1
公开(公告)日：2019-01-24
申请号：US16138578
申请日：2018-09-21
申请人： FUJIFILM Corporation
发明人： Mikio WATANABE
CPC分类号： G02B7/36 , G02B7/38 , G02B7/40 , G03B13/20 , G03B13/36 , G03B15/006 , G03B17/00 , G03B33/10 , H04N5/23212 , H04N5/232123 , H04N13/239
摘要： An imaging apparatus includes: a distance measurement unit that measures distance values of a plurality of points in a first area which has a focus point as a reference point; a statistical unit that calculates statistics indicating a variation in the measured distance values of the plurality of points in the first area; a size determination unit that determines the size of a second area which has the focus point as a reference point, on the basis of the calculated statistics; a contrast evaluation value calculation unit that calculates a contrast evaluation value on the basis of an image of the second area; and a focusing unit that moves a focus lens to a lens position determined on the basis of the calculated contrast evaluation value.
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公开(公告)号：US20180352167A1
公开(公告)日：2018-12-06
申请号：US15746186
申请日：2017-02-06
申请人： Sony Corporation
发明人： Motoshige Okada
摘要： The present technology relates to an image pickup apparatus, an image pickup control method, and a program that enable focus control to be performed without depending on environmental conditions and optical conditions, for example.An image pickup apparatus includes: an image pickup device having a predetermined image pickup area; a lens drive unit that drives a focus lens; a storage unit that stores, in a lookup table, a correspondence relationship between distance information with respect to a subject and lens position information of the focus lens; a distance information acquisition unit that acquires distance information with respect to an object existing in the image pickup area; and a control unit that controls the lens drive unit on the basis of the distance information acquired by the distance information acquisition unit and the lookup table. The present technology is applicable to, for example, an image pickup apparatus that performs focus control.
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公开(公告)号：US20170244896A1
公开(公告)日：2017-08-24
申请号：US15430610
申请日：2017-02-13
发明人： HOW-WEN CHIEN , PO-YEN LIU
CPC分类号： H04N5/23245 , G01S17/08 , G01S17/88 , G02B7/40 , G02B13/001 , G03B3/10 , G03B13/20 , G03B17/12 , H04N5/2254 , H04N5/23212 , H04N13/25 , H04N13/289
摘要： A multiple lenses system includes a lens module, a processing unit, a switching unit, and a focus module. The lens module includes a plurality of lenses. The switching unit is electrically connected to the plurality of lenses and the processing unit. The focus module includes a laser emitter and a laser receiver. The laser emitter emits laser beam towards an object under control of the processing unit. The laser receiver receives the laser beam reflected by the object. The processing unit obtains a focus distance between the object and the focus module according to a time difference from emitting the laser beam to receiving the laser beam, and controls the switching unit to switch and to select at least one of the plurality of lenses according to the focus distance.
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公开(公告)号：US20160266347A1
公开(公告)日：2016-09-15
申请号：US15026307
申请日：2014-11-19
申请人： SONY CORPORATION
发明人： TETSUYA SHIMODA
CPC分类号： G02B7/285 , G02B7/32 , G02B7/36 , G02B7/40 , G03B13/36 , H04N5/23212 , H04N5/23245 , H04N5/2351
摘要： The present technology relates to an imaging apparatus and method, and a program, capable of focusing on a subject with higher accuracy. An image sensor shoots a captured image by receiving light coming from a subject via an optical unit and by converting the light into electrical signal. A captured-image processing unit detects a luminance level of the captured image. A passive mode AF calculator calculates a shift amount of a lens in autofocusing using a passive mode, and an active mode AF calculator calculates a shift amount of a lens in autofocusing using an active mode. An AF mode determination unit selects any one of the passive mode or the active mode by comparing the luminance level with a threshold. The present technology is applicable to digital still cameras.
摘要翻译： 本技术涉及能够以更高精度聚焦在被摄体上的成像装置和方法以及程序。 图像传感器通过经由光学单元接收来自被摄体的光并且将光转换成电信号来拍摄捕获的图像。 拍摄图像处理单元检测拍摄图像的亮度水平。 无源模式AF计算器使用无源模式计算自动对焦中的透镜的偏移量，并且主动模式AF计算器使用活动模式来计算自动对焦中的透镜的偏移量。 AF模式确定单元通过将亮度级别与阈值进行比较来选择被动模式或活动模式中的任何一种。 本技术适用于数码相机。
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公开(公告)号：US07436595B2
公开(公告)日：2008-10-14
申请号：US10758740
申请日：2004-01-16
CPC分类号： G02B21/14 , G01S3/7835 , G01S11/12 , G02B5/00 , G02B7/365 , G02B7/40 , G02B27/0025 , G02B27/46 , G02B27/52
摘要： A system for increasing the depth of field and decreasing the wavelength sensitivity and the effects of misfocus-producing aberrations of the lens of an incoherent optical system incorporates a special purpose optical mask into the incoherent system. The optical mask has been designed to cause the optical transfer function to remain essentially constant within some range from the in-focus position. Signal processing of the resulting intermediate image undoes the optical transfer modifying effects of the mask, resulting in an in-focus image over an increased depth of field. Generally the mask is placed at a principal plane or the image of a principal plane of the optical system. Preferably, the mask modifies only phase and not amplitude of light. The mask may be used to increase the useful range of passive ranging systems.
摘要翻译： 用于增加景深和降低波长灵敏度的系统以及非相干光学系统的透镜产生失焦产生像差的效果将专用光学掩模并入到非相干系统中。 光掩模被设计成使得光学传递函数在从对焦位置的一定范围内基本保持恒定。 所得到的中间图像的信号处理消除了掩模的光学传递修改效果，导致在增加的景深上的对焦图像。 通常，掩模被放置在主平面或光学系统的主平面的图像上。 优选地，掩模仅修改相位而不是光的振幅。 掩模可用于增加被动测距系统的有用范围。
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公开(公告)号：US20080174869A1
公开(公告)日：2008-07-24
申请号：US11748326
申请日：2007-05-14
IPC分类号： G02B5/18
CPC分类号： G02B21/14 , G01S3/7835 , G01S11/12 , G02B5/00 , G02B7/365 , G02B7/40 , G02B27/0025 , G02B27/46 , G02B27/52
摘要： An imaging system is characterized at least by an ambiguity function (“AF”) and a point spread function (“PSF”). The AF is a function of parameters u and v related to a misfocus parameter ψ; the PSF is at least a function of ψ. The system includes (1) an image recording device, (2) an optical arrangement for imaging an object to the image recording device, and (3) a post processor that renders an in-focus electronic image over a range of distances between the object and the optical arrangement. The optical arrangement alters phase such that a main lobe of the AF is broader in v for a specific u. The PSF has a functionally different form for a specific ψ, in comparison to a PSF characterizing the system when the optical arrangement does not alter the phase for those specific values of u and ψ over the range of distances.
摘要翻译： 成像系统至少由歧义函数（“AF”）和点扩散函数（“PSF”）表征。 AF是与误聚焦参数psi相关的参数u和v的函数; PSF至少是psi的函数。 该系统包括（1）图像记录装置，（2）用于将对象成像到图像记录装置的光学装置，以及（3）后处理器，其在对象之间的距离范围内呈现对焦电子图像 和光学装置。 光学布置改变相位，使得对于特定的u，AF的主瓣在v中更宽。 与特定系统的PSF相比，PSF具有功能上不同的形式，当光学布置不改变在距离范围内u和psi的那些特定值的相位时。
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公开(公告)号：US4472742A
公开(公告)日：1984-09-18
申请号：US377563
申请日：1982-05-12
CPC分类号： G02B7/40 , H04N5/23212 , H04N5/772 , Y10S358/906
摘要： There are video and sound recording devices such as movie cameras or video cameras with an automatic focusing system of the type for setting a photographic lens to a position at which an object can be sharply focused in response to the signal which is representative of a distance from the camera to the object and obtained by measuring the time interval from the time when the ultrasonic waves are transmitted at a predetermined repetition frequency to the object to the time when the echo from the object is received. Such devices have a common defect that a microphone picks up impulse-like noise generated from an ultrasonic transducer especially at the start point of ultrasonic waves. To overcome this problem, the present invention provides an audible noise elimination or suppression means or a control circuit which operates in synchronism with the ultrasonic wave transmission so that an audio signal processing system attenuates the audio output signal.
摘要翻译： 存在诸如电影摄像机或摄像机的视频和声音记录装置，其具有用于将摄影镜头设置为可以响应于代表距离的距离的信号而将物体可以锐度聚焦的位置的类型的自动对焦系统 通过测量从超声波以预定重复频率传输到对象的时间到从物体的回波接收时的时间间隔来获得相机。 这样的装置具有常见的缺陷，即麦克风拾取超声波换能器产生的脉冲状噪声，特别是在超声波的起点处。 为了克服这个问题，本发明提供了一种可听噪声消除或抑制装置或与超声波传输同步操作的控制电路，使音频信号处理系统衰减音频输出信号。
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公开(公告)号：US4367934A
公开(公告)日：1983-01-11
申请号：US285114
申请日：1981-07-22
申请人： Tooru Matsui
发明人： Tooru Matsui
CPC分类号： G02B7/40
摘要： A distance detecting device for close-up photography applicable to a range finding device of the type wherein light emitted from a light source is projected onto an object through a projecting lens, and the light reflected from the object impinges upon one of a plurality of light receiving elements via a light receiving lens for detecting which one of a plurality of zones the object is located, depending on which one of the light receiving elements receives the light. The device in accordance with the present invention generates a single light pulse for ordinary photography and light pulses successively for close-up photography, indicating whether a camera-to-target-object distance matches a predetermined distance for close-up photography or deviates therefrom. The successive light pulses for close-up photography may be weaker in intensity than the single light pulse for ordinary photography.
摘要翻译： PCT No.PCT / JP81 / 00002 Sec。 371日期1981年7月22日 102（e）日期1981年7月22日PCT提交1981年1月7日PCT公布。 出版物WO81 / 02067 PCT 日期：1981年7月23日。一种用于特写摄影的距离检测装置，适用于其中从光源发射的光通过投影透镜投射到物体上的测距装置，并且从物体反射的光撞击 经由用于检测物体所位于的多个区域中的哪一个的光接收透镜中的一个光接收元件中的一个，取决于哪个光接收元件接收光。 根据本发明的装置产生用于普通摄影的单个光脉冲和用于特写摄影的光脉冲，指示相机到目标物体距离是否匹配用于特写摄影的预定距离或偏离其。 用于特写摄影的连续光脉冲的强度可能比普通摄影的单个光脉冲弱。
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公开(公告)号：US4334744A
公开(公告)日：1982-06-15
申请号：US172861
申请日：1980-07-28
申请人： William A. Shelton
发明人： William A. Shelton
CPC分类号： G03B7/16 , G02B7/40 , G03B15/05 , G03B2215/05
摘要： Photographic apparatus, e.g., a camera, having a synchronized flash. The camera includes a ranging system, an objective lens assembly movable between first and second positions for focusing an object at the camera's focal plane, a source of artificial illumination for illuminating the object, and a flash fire control in the form of an electronic flash initiation timer. The flash fire control receives an input from the ranging system which is representative of the camera-to-subject distance, and an input from the objective lens assembly upon its release for movement toward the second position. The flash fire control correlates these inputs so as to fire the source of artificial illumination while the lens assembly is still moving toward the second position and the object is in focus. In one embodiment, the intensity and/or the duration of the light from the artificial source of illumination is changed as a function of an exposure parameter, e.g., camera-to-subject distance.
摘要翻译： 具有同步闪光的照相装置，例如相机。 照相机包括测距系统，可在第一和第二位置之间移动的物镜组件，用于将物体聚焦在照相机的焦平面处，用于照亮物体的人造照明源以及电子闪光灯起始的闪光灭火控制 定时器 闪光灯控制接收来自测距系统的输入，该输入表示摄像对象距离，以及来自物镜组件的释放时的输入以朝向第二位置移动。 闪光灯控制将这些输入相关联，以便在透镜组件仍然朝向第二位置移动并且物体处于焦点的同时触发人造照明源。 在一个实施例中，来自人造照明光源的光的强度和/或持续时间作为曝光参数（例如照相机到被摄体距离）的函数而改变。
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公开(公告)号：US4315676A
公开(公告)日：1982-02-16
申请号：US17425
申请日：1979-03-05
CPC分类号： G03B15/04 , G02B7/40 , G03B7/0807 , G03B7/16
摘要： An automatic camera apparatus includes an integrated exposure control system comprising a sonar rangefinder for first determining camera-to-subject range and then setting the objective lens focus condition to correspond to the determined camera-to-subject distance and thereafter firing an electronic flash at an appropriate exposure aperture also corresponding to the determined camera-to-subject distance in a manner providing for a proportional fill-in flash under conditions of high ambient scene light intensity.
摘要翻译： 一种自动相机装置，包括一个综合的曝光控制系统，它包括一个声纳测距仪，用于首先确定相机与拍摄对象的距离，然后将物镜聚焦条件设置为与所确定的相机对被摄体的距离相对应，然后在 在高环境场景光强度的条件下，在提供比例填充闪光的方式下，适当的曝光光圈也对应于所确定的摄像对象距离。
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