公开(公告)号：US06826363B2

公开(公告)日：2004-11-30

申请号：US10728112

申请日：2003-12-04

Applicant: Hideo Taka

Inventor： Hideo Taka

IPC: G03B1336

CPC classification number: G02B7/36 ,  G03B13/00

Abstract: An automatic focusing device for camera is provided which makes it possible to sequentially photograph a large number of frames while ensuring a high focusing accuracy. A first focusing unit carries out a first focusing operation. After the first focusing unit carries out the first focusing operation, a second focusing unit carries out a second focusing operation. A storage device stores a difference in results obtained by the first and second focusing operations. In sequential shooting, a controller causes the first focusing unit to correct the result of the first focusing operation according to the stored difference, and inhibits the second focusing unit from carrying out the second focusing operation.

公开(公告)号：US06718133B2

公开(公告)日：2004-04-06

申请号：US10055332

申请日：2002-01-23

Applicant: Koichi Nakata ,  Osamu Nonaka

Inventor： Koichi Nakata ,  Osamu Nonaka

IPC: G03B1336

CPC classification number: G03B13/00

Abstract: This invention constitutes a measuring distance device including a sensor array which detects image signals of an object in a finder screen, a projection unit which projects a signal light on the object, a selection unit which selects a detection area for the image signal of the sensor array, a change unit (control unit) which makes detection areas selected by the selection unit different from each other when the signal light is projected or is not projected by the projection unit, and a focus adjustment unit which performs focus adjustment by an image signal output in the detection area of the sensor array selected by the selection unit. A reduction in time lag is achieved without increasing a read area, and an influence of harmful light is reduced. This device which can perform an accurate and high-speed process can be applied to a hybrid AF camera.

Abstract translation: 本发明构成了一种测量距离装置，包括：检测取景器屏幕中的物体的图像信号的传感器阵列;投射在物体上的信号光的投影单元;选择单元，其选择传感器的图像信号的检测区域 阵列，当信号光投射或不被投影单元投影时，使由选择单元选择的检测区域彼此不同的改变单元（控制单元）以及通过图像信号进行聚焦调整的聚焦调整单元 输出在由选择单元选择的传感器阵列的检测区域中。 在不增加读取面积的情况下实现时间延迟的降低，并且有害光的影响降低。 这种可以执行精确和高速处理的装置可以应用于混合AF相机。

公开(公告)号：US06714732B2

公开(公告)日：2004-03-30

申请号：US10396272

申请日：2003-03-25

Applicant: Shiroshi Kanemitsu

Inventor： Shiroshi Kanemitsu

IPC: G03B1336

CPC classification number: G02B7/34

Abstract: A phase difference detection apparatus for detecting a phase difference between images formed on a pair of optical sensor arrays in which the calculation of a compensation value is simplified. When a compensation effectiveness judgment unit judges that compensation of the pair of image data rows would be effective, a left and right difference compensation unit calculates a compensation amount based on a difference in maximum values and minimum values in a pair of image data rows corresponding to the images produced by the optical sensor arrays and compensates the image data rows by the calculated compensation amount. Based upon the compensated values, a correlation calculation unit carries out a correlation calculation, and a maximum correlation detection unit detects a maximum correlation level. Based upon the maximum correlation level, a interpolation calculation unit carries out an interpolation calculation, and a phase difference is detected by a phase difference detection unit.

Abstract translation: 一种用于检测在一对光学传感器阵列中形成的图像之间的相位差的相位差检测装置，其中补偿值的计算被简化。 当补偿有效性判断单元判断一对图像数据行的补偿有效时，左右差分补偿单元基于与对应于图像数据行的一对图像数据行中的最大值和最小值的差来计算补偿量 由光学传感器阵列产生的图像，并通过计算的补偿量补偿图像数据行。 基于补偿值，相关计算单元执行相关计算，最大相关检测单元检测最大相关电平。 基于最大相关电平，内插计算单元执行插值计算，并且由相位差检测单元检测相位差。

公开(公告)号：US06711352B2

公开(公告)日：2004-03-23

申请号：US10329475

申请日：2002-12-27

Applicant: Takanori Kohno ,  Tomio Kurosu

Inventor： Takanori Kohno ,  Tomio Kurosu

IPC: G03B1336

CPC classification number: G02B7/32

Abstract: An optical range finder has a projection unit for projecting optical flux to an object, a photoreceiving unit for receiving the optical flux returned from the object and outputting a detection signal in accordance with a light quantity of the received optical flux, and a circuitry unit for conducting a measurement of a distance to the object based on the detection signal. In the circuitry unit, a light quantity determination circuit compares a signal level of the detection signal with a reference level to carry out binary determination of the light quantity of the returned optical flux. A reference level setting circuit switchably supplies a plurality of reference levels to the light quantity determination circuit, the reference levels being preset in correspondence to multiple stages of the distance. A control circuit controls the reference level setting circuit to supply the reference levels while switching the reference levels so as to enable the light quantity determination circuit to execute a plurality of the binary determination with the supplied reference levels for one measurement, thereby specifying the distance to one of the multiple stages based on the thus obtained plurality of the binary determination.

Abstract translation: 光学测距仪具有用于将光通量投射到物体的投影单元，用于接收从物体返回的光通量并根据所接收的光通量的光量输出检测信号的光接收单元，以及用于 基于检测信号进行到物体的距离的测量。 在电路单元中，光量确定电路将检测信号的信号电平与参考电平进行比较，以执行返回的光通量的光量的二进制确定。 参考电平设置电路可切换地将多个基准电平提供给光量确定电路，该参考电平是根据该距离的多个级来预设的。 控制电路控制参考电平设置电路，以在切换参考电平的同时提供参考电平，以使得光量确定电路能够利用提供的一个测量的参考电平来执行多个二进制确定，从而指定到 基于由此获得的多个二进制确定的多个级中的一个。

公开(公告)号：US06636699B2

公开(公告)日：2003-10-21

申请号：US09900952

申请日：2001-07-10

Applicant: Mitsuru Owada

Inventor： Mitsuru Owada

IPC: G03B1336

CPC classification number: G02B7/36

Abstract: A focus detection device includes a plurality of light receiving sensors having sensitivity characteristics such that their respective visible spectra have different wavelength regions, a focus detection circuit which performs focus detection based on an output of any one of the light receiving sensors, and a determination circuit which determines whether or not the focus detection result is appropriate. If the determination circuit determines that the result is not appropriate, the focus detection circuit performs focus detection based on the output of another light receiving sensor.

Abstract translation: 焦点检测装置包括具有灵敏度特性的多个光接收传感器，使得其各自的可见光谱具有不同的波长区域，基于任一个光接收传感器的输出执行焦点检测的焦点检测电路，以及确定电路 其确定焦点检测结果是否合适。 如果确定电路确定结果不合适，则焦点检测电路基于另一光接收传感器的输出执行焦点检测。

公开(公告)号：US06522839B2

公开(公告)日：2003-02-18

申请号：US09898419

申请日：2001-07-03

Applicant: Masataka Ide

Inventor： Masataka Ide

IPC: G03B1336

CPC classification number: G03B13/34

Abstract: A distance measuring sensor applied to the present distance measuring device has three pairs of line sensors and a control circuit arranged in the center thereof. In three pairs of line sensors, the central line sensors have a train of photodetector units and a train of processing units, to be divided into two, for processing output signals of the train of photodetector units. The upper line sensors and lower line sensors are arranged on the upper and lower sides of the train of photodetector units on the right and left of the center line sensors, opposed to the train of processing units. The upper and lower line sensors have the train of photodetector units corresponding to a length of two-divided line-sensor.

公开(公告)号：US06498900B1

公开(公告)日：2002-12-24

申请号：US09583027

申请日：2000-05-30

Applicant: Masahiro Nakata ,  Satoru Horita

Inventor： Masahiro Nakata ,  Satoru Horita

IPC: G03B1336

CPC classification number: G02B7/32

Abstract: An automatic focusing apparatus in which the quantity of auxiliary light can be precisely controlled regardless of conditions of an object to be taken is disclosed. The apparatus includes a passive AF sensor unit, a flash device and a main CPU which controls the flash device as an auxiliary light source for the focus detection, so that the flash device intermittently emits flashes of light. The main CPU increases emission time and emission time interval stepwise from the minimum value when the flash device intermittently emits flashes of light as the auxiliary light source upon detection of the focused state.

Abstract translation: 公开了一种自动对焦装置，其中辅助光的量可以被精确地控制，而不管被摄体的状况如何。 该装置包括无源AF传感器单元，闪光装置和控制闪光装置作为焦点检测的辅助光源的主CPU，使得闪光装置间歇地发出闪光。 主CPU在检测到聚焦状态时，当闪光装置间歇地发出作为辅助光源的闪光时，从最小值逐步增加发射时间和发射时间间隔。

公开(公告)号：US06463214B1

公开(公告)日：2002-10-08

申请号：US09897950

申请日：2001-07-05

Applicant: Masahiro Nakata

Inventor： Masahiro Nakata

IPC: G03B1336

CPC classification number: G03B13/36 ,  G02B7/34

Abstract: A multi-point autofocus system includes a focus detection device which can calculate a defocus amount for each of a plurality of focus detection zones in a picture plane; a selecting device for manually selecting a focus detection zone from the plurality of focus detection zones for which the defocus amount is to be calculated by the focus detection device; and a determining device for determining a valid focus detection zone by which a valid defocus amount can be calculated out of at least one of the plurality of focus detection zones other than the manually-selected focus detection zone, in such a manner that a higher priority is given to a focus detection zone than another focus detection zone of the plurality of focus detection zones in the case where the result of a calculation of the defocus amount of the manually-selected focus detection zone is invalid.

Abstract translation: 多点自动对焦系统包括可以计算画面中的多个焦点检测区域中的每一个的散焦量的焦点检测装置; 选择装置，用于从由焦点检测装置计算散焦量的多个焦点检测区域手动选择焦点检测区域; 以及确定装置，用于确定有效焦点检测区域，通过该有效焦点检测区域，可以以除了手动选择的焦点检测区域之外的多个焦点检测区域中的至少一个焦点检测区域中的至少一个以更高优先级的方式计算有效散焦量 在手动选择的焦点检测区域的散焦量的计算结果无效的情况下，多焦点检测区域的焦点检测区域被赋予焦点检测区域。

公开(公告)号：US06404986B1

公开(公告)日：2002-06-11

申请号：US09520233

申请日：2000-03-07

Applicant: Goichi Morikawa

Inventor： Goichi Morikawa

IPC: G03B1336

CPC classification number: G02B7/346

Abstract: A focus detecting device includes a defocus amount detecting circuit for detecting an amount of defocus obtained at each of a plurality of focus areas disposed within an image plane, a selecting circuit for, on the basis of amounts of defocus detected respectively at the plurality of focus areas, dividing the plurality of focus areas into a plurality of groups and selecting a focus area capturing a target object from among the plurality of groups, a posture sensor for detecting a posture of an apparatus, a weighting circuit for, on the basis of positions of the plurality of focus areas within the image plane, dividing the plurality of focus areas into a plurality of groups and respectively weighting the plurality of groups, the weighting circuit making grouping of the plurality of focus areas differently according to the posture of the apparatus, and a deciding circuit for deciding at least one focus area from among the plurality of focus areas by adding a result of weighting made by the weighting circuit to a result of selection made by the selecting circuit.

Abstract translation: 焦点检测装置包括散焦量检测电路，用于检测在设置在图像平面内的多个焦点区域中的每一个处获得的散焦量，基于分别在多个焦点处检测到的散焦量的选择电路 区域，将多个焦点区域分成多个组，并且从多个组中选择捕获目标对象的对焦区域，用于检测装置的姿势的姿势传感器，基于位置的加权电路 在所述图像平面内的所述多个聚焦区域中，将所述多个聚焦区域分成多个组并分别加权所述多个组，所述加权电路根据所述装置的姿势使所述多个聚焦区域分组不同， 以及判定电路，用于通过加上由t所作的加权结果来决定多个聚焦区域中的至少一个聚焦区域 他加权电路到由选择电路进行的选择结果。

公开(公告)号：US06360059B1

公开(公告)日：2002-03-19

申请号：US09575981

申请日：2000-05-23

Applicant: Masataka Ide ,  Hisashi Goto

Inventor： Masataka Ide ,  Hisashi Goto

IPC: G03B1336

CPC classification number: G03B13/36 ,  G02B7/08 ,  G02B7/28

Abstract: The present invention provides a low-cost focus detector that can carry out a focus detection over a wide field of view and can secure a sufficient light-receiving quantity to have an improved S/N ratio and an improved focus detection precision. A camera has a condenser lens disposed near a predetermined focusing surface of an image pick-up lens. At the rear of the condenser lens, a brightness diaphragm having a pair of apertures is disposed. Further, at the rear of the brightness diaphragm, a telecentric type image re-forming lenses are disposed. Images formed by beam fluxes passed through the image re-forming lenses are received by an image pick-up device that includes photoelectric conversion elements.

Abstract translation: 本发明提供了一种低成本的焦点检测器，其可以在宽视角上进行焦点检测，并且可以确保足够的光接收量以具有改善的S / N比和改进的焦点检测精度。 相机具有设置在摄像镜头的预定聚焦表面附近的聚光透镜。 在聚光透镜的后部设置有具有一对孔的亮度隔膜。 此外，在亮度隔膜的后部设置有远心型图像重新形成透镜。 由通过图像重构透镜的光束形成的图像由包括光电转换元件的图像拾取装置接收。