| Patent application number | Description | Published |
|---|
| 20090115882 | IMAGE-PICKUP APPARATUS AND CONTROL METHOD FOR IMAGE-PICKUP APPARATUS - The image-pickup apparatus includes an image-pickup element including first type pixels photoelectrically converting an object image formed by a light flux from an optical system and second type pixels photoelectrically converting plural images formed by plural light fluxes divided from the light flux from the optical system, a controller performing contrast detection focus control using signals from pixels in a contrast evaluation area among the first type pixels, and a detector detecting phase differences of respective pairs of images of the plural images using signals from the second type pixels, the pairs of images being respectively formed in plural phase difference detection areas in the contrast evaluation area, and calculating information on an in-focus position of the optical system or object distance for each phase difference detection area based on each phase difference. The controller changes the contrast evaluation area based on the information calculated for the respective phase difference detection areas. | 05-07-2009 |
| 20090185799 | IMAGING APPARATUS AND LENS APPARATUS - An imaging apparatus to which a lens apparatus is detachably attached includes an image sensor configured to generate an image signal by photoelectrically converting an object image, a first acquisition unit configured to acquire a contrast value of the image signal acquired by the image sensor, a second acquisition unit configured to acquire lens position information at a predetermined time interval, and a focus detection unit configured to detect a focal position based on outputs of the first acquisition unit and the second acquisition unit, wherein the focus detection unit selects the lens position information that corresponds to the contrast value acquired by the first acquisition unit from a plurality of pieces of the lens position information acquired by the second acquisition unit at the predetermined time interval, and detects the focal position. | 07-23-2009 |
| 20100157134 | IMAGE PICKUP APPARATUS - An image pickup apparatus which is capable of accurately acquiring evaluation values at target positions for contrast evaluation value acquisition to thereby suppress degradation of accuracy of autofocus due to skipping the reading of a contrast evaluation value at an in-focus position and an increase in autofocus time. The image pickup apparatus acquires from an interchangeable lens at least one of a drivable defocus amount of the interchangeable lens, and a driving speed in driving of a focus lens to focus adjustment positions. The image pickup apparatus changes a lens driving method for focus detection, based on at least one of the drivable defocus amount, the driving speed, and a charge storage interval for charge storage in an image pickup element for acquiring a signal for use in focus detection. | 06-24-2010 |
| 20100214452 | IMAGE-PICKUP APPARATUS AND CONTROL METHOD THEREOF - An image-pickup apparatus includes an image-pickup element including first pixels photoelectrically converting an object image formed by a light flux from an image-pickup optical system and second pixels including plural focus detection pixels photoelectrically converting a light flux divided from the light flux from the image-pickup optical system, a focus detector detecting a focus state of the image-pickup optical system based on outputs from the second pixels, a frequency component detector detecting a spatial frequency component of the object image formed on the first pixels, an image generator generating, based on outputs from the first pixels, a partial image corresponding to the second pixels of an image obtained by an output from the image-pickup element. The apparatus includes a controller switching whether or not to cause the image generator to generate the partial image according to the spatial frequency component detected by the frequency component detector. | 08-26-2010 |
| 20100238343 | IMAGE PICKUP APPARATUS AND SIGNAL PROCESSOR - An image pickup apparatus a camera | 09-23-2010 |
| 20110090393 | IMAGING APPARATUS - When automatic exposure (AE) for AF is performed, an imaging apparatus sets a fastest speed or a predetermined fixed speed as a diaphragm driving speed to reduce the time to be spent for the AF. On the other hand, when an interchangeable lens in which the diaphragm driving speed can be changed is attached to the imaging apparatus, and AE is performed for moving image recording, the imaging apparatus slows down the diaphragm blade driving speed compared to the speed at the time of AE for AF in consideration of the quality of moving image recording and display. | 04-21-2011 |
| 20120237193 | IMAGE CAPTURE APPARATUS - An image capture apparatus which captures an object image formed by an imaging lens, comprises a focus detection unit which detects a focus position of the object image at a plurality of positions on an image sensing plane, a prediction unit which stores the past output from the focus detection unit, and predicts a locus of the focus position of the object image based on the stored output, thereby predicting the focus position of the object image at a predetermined time instant, a detection unit which detects a shift of the object image on the image sensing plane, and a control unit which changes the output from the prediction unit based on the output from the detection unit. | 09-20-2012 |
| 20120242886 | FOCUS DETECTION APPARATUS, METHOD FOR CONTROLLING THE SAME, AND IMAGE CAPTURING APPARATUS HAVING A FOCUS DETECTION APPARATUS - A focal position is searched for by contrast evaluation method, the focus lens is stopped once it is detected that the focus lens has passed the focal position, and the defocus amount at the stopping position is found. The defocus amount corresponding to the difference between the focal position and the stopping position is subtracted from this defocus amount to compute a correction value for the defocus amount. Consequently, a correction value for the focus detection result by phase-difference detection method can be obtained accurately in a focus detection apparatus capable of automatic focus detection by phase-difference detection method and contrast evaluation method, as well as a method for controlling this apparatus. | 09-27-2012 |
| 20130300895 | IMAGE CAPTURING APPARATUS AND CONTROL METHOD THEREOF - An image capturing apparatus comprises: a sensor that photoelectrically converts incidence light and outputs an image signal; a focus control unit that performs focus control based on a contrast of the image signal corresponding to each of a plurality of focus control areas set within an image capturing area; a counting unit that detects and counts, from among the plurality of focus control areas, high luminance focus control areas indicating a luminance of at least a predetermined luminance; and an exposure control unit that performs exposure control, in a case where the counted number is a first number, so as to reduce an exposure amount of the sensor to less than when the counted number is a second number that is smaller than the first number, the exposure control being performed before the focus control by the focus control unit. | 11-14-2013 |
| 20130307993 | IMAGE CAPTURE APPARATUS AND CONTROL METHOD THEREFOR - A specific subject region is detected, and if a focus detection area that is encompassed in the specific subject region is present, focus detection is performed on that focus detection area. This makes it possible to reduce the influence of a conflict between far and near subjects and reduce the amount of time required for focus detection in an image capture apparatus and in a control method therefor, the image capture apparatus being for performing automatic focus detection based on contrast evaluation values for a plurality of focus detection areas that are each located at a fixed position and each has a fixed size. | 11-21-2013 |
| 20140362278 | IMAGE CAPTURING APPARATUS AND IMAGE CAPTURING METHOD - An image capturing apparatus performs rough detection through high-speed focus detection targeting on a face contour portion and then performs focusing through high-precision focus detection targeting on a face-included portion set inside the face contour. | 12-11-2014 |
