| Patent application number | Description | Published |
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| 20080205871 | FOCUS DETECTION DEVICE FOR IMAGE FORMING OPTICAL SYSTEM, IMAGING APPARATUS, AND FOCUS DETECTION METHOD FOR IMAGE FORMING OPTICAL SYSTEM - A focus detection device for an image forming optical system comprises a micro-lens array constituted with a plurality of two-dimensionally arrayed micro-lenses, a light-receiving element array that includes a plurality of light-receiving elements receiving a light flux from the image forming optical system via the micro-lenses, the plurality of light-receiving elements being disposed in correspondence to each micro-lens, and a focus detection unit that generates image data representing an image formed by the image forming optical system and a focus detection signal, which corresponds to a focus adjustment state at the image forming optical system, based upon signals output from the light-receiving elements at the light-receiving element array, and that detects the focus adjustment state at the image forming optical system based upon the image data and the focus detection signal. | 08-28-2008 |
| 20080277566 | Image Forming State Detection Device - An image forming state detection device comprises a micro-lens array that is disposed at a position set apart from a predetermined focal plane of an image forming optical system by a specific distance and includes a plurality of micro-lenses arrayed with a predetermined pitch, a light-receiving portion array that includes a plurality of light-receiving portions each corresponding to one of the micro-lenses in the micro-lens array and receives an image on the predetermined focal plane via the individual micro-lenses, a signal string extracting means that extracts a pair of signal strings corresponding to images, formed with light fluxes having passed through different pupil areas of the image forming optical system, based upon light reception outputs obtained from the plurality of light-receiving portions, and an image forming state calculating means that calculates an image forming state at the image forming optical system by detecting an offset with regard to the phases of the pair of signal strings extracted by the signal string extracting means. | 11-13-2008 |
| 20080302947 | Focus detection device and image pick-up device - A focus detection device includes a micro lens array having a plurality of micro lenses, a light receiving element array having a plurality of light receiving elements for each micro lens and that receives light rays from a plurality of partial areas in which pupils of an imaging optical system are different from each other, in a plurality of light receiving elements respectively through each micro lens and a focus detection calculation circuit. The device generates at least three signal strings respectively corresponding to images of light rays which have been transmitted through at least three of the partial areas, based on signals output from the plurality of light receiving elements of the light receiving element array. The device obtains, from the at least three signal strings, shift amounts of two signal strings corresponding to two partial areas, and detects a focus adjustment state of an imaging optical system based on the obtained plurality of shifts amounts. | 12-11-2008 |
| 20090041350 | Image processing apparatus, imaging apparatus and image processing program - A white-balance imaging apparatus includes a first gradation converting unit performing gradation conversion depending on each pixel value of an original image, a second gradation converting unit performing gradation conversion based on pixel values within a predetermined range from each pixel of the original image, a selecting unit selecting a gradation conversion mode, and a determining unit determining second gradation conversion parameters for use by the second gradation converting unit, according to the selected gradation conversion mode, and determining at least one of first gradation conversion parameters for use by the first gradation converting unit and an exposure amount in an exposure amount adjusting part which can adjust the exposure amount, according to the selected gradation conversion mode. Therefore, it is possible to correct the dark area gradation of an image while maintaining brightness of the whole image, and to realize preferable gradation conversion. | 02-12-2009 |
| 20090174806 | FOCUS DETECTION DEVICE, FOCUS DETECTION METHOD AND IMAGING APPARATUS - A focus detection device includes an imaging element, a storage controller, and a focus detector. The imaging element is provided on a light path of a light flux incident via an optical system and has a plurality of pixels of charge storage type two-dimensionally arranged. The storage controller controls to sequentially store charges in pixels arranged in a first direction among the plurality of pixels and controls to sequentially store charges in pixels arranged in a second direction opposite to the first direction. The focus detector detects a focus adjustment state of the optical system based on a first output obtained when the storage controller sequentially performs storage control in the first direction and a second output obtained when the storage controller sequentially performs storage control in the second direction. | 07-09-2009 |
| 20090174807 | FOCUS DETECTION DEVICE, FOCUS DETECTION METHOD, AND IMAGE PICKUP APPARATUS - A focus detection device includes a light receiving element, an image shift detection unit, a movement detection unit, and a focus detection unit. The light receiving element receives a pair of light fluxes passing through different regions of a pupil of an optical system. The image shift detection unit detects an image shift amount caused by the pair of light fluxes, based on outputs of the pair of light fluxes received by the light receiving element. The movement detection unit detects an image movement amount caused by the optical system. The focus detection unit detects the focus adjustment state of the optical system by correcting the shift amount detected by the image shift detection unit, with the image movement amount detected by the movement detection unit. | 07-09-2009 |
| 20090295964 | Image sensor and image-capturing device - An image sensor includes: a plurality of imaging pixels; and a plurality of focus detection pixels constituted with a micro-lens and a photoelectric conversion element that receives a focus detection light flux transmitted through a photographic optical system and executes photoelectric conversion. The photoelectric conversion element in each of the focus detection pixels includes a light-receiving area where the focus detection light flux is received; light-receiving area images corresponding to each of the focus detection pixels are each formed as the light-receiving area is projected via the micro-lens onto a pupil plane of the photographic optical system; and a positional relationship of the micro-lens and the light-receiving area is determined in correspondence to an image height so that the light-receiving area images corresponding to all the focus detection pixels are superimposed on one another on the pupil plane. | 12-03-2009 |
