Canon Kabushiki Kaisha

Wataru Sakagawa

Yukio Sakagawa

Hiroki Uchida

Shigeaki Ono

Yuki Shimozato

Hiroshi Itoh

Toshifumi Masaki

Kazuaki Umekawa

Tomasz Dziubak

Takashi Yuasa

Tomoyuki Ikegami

Makoto Fukuhara

Marek Rozanski

Rozanski Marek

Provided is an image pickup apparatus including a light beam projecting unit projecting a light beam onto an eye to be inspected, an image signal acquiring unit acquiring an image signal based on the light beam reflected by the eye, a scanning unit included in the light beam projecting unit and scanning the eye with the light beam, an image generating unit generating an image based on the acquired image signal, a position information generating unit arranged outside an optical path of projecting the light beam onto the eye by the light beam projecting unit, a control unit causing the scanning unit to scan the position information generating unit with the light beam, and a correcting unit correcting timing of acquiring the image signal by the image signal acquiring unit based on position information acquired from the light beam with which the position information generating unit is scanned.

Image pickup apparatus and method of controlling image pickup apparatus

An imaging apparatus including: a first scanning unit and a second scanning unit, subjecting a measuring beam, which is obtained by splitting a light source beam, to a back-and-forth scan in a predetermined area on a fundus in a first direction and a second direction, respectively; a scanning control unit controlling the first scanning unit and the second scanning unit so as to simultaneously execute scans; a depth information acquisition unit obtaining information on the fundus in a depth direction based on interference beam between return beam from the fundus and a reference beam; an image generation unit generating a tomographic image in the predetermined area through use of output from the depth information acquisition unit and a control signal supplied by the scanning control unit; and a display unit displaying the generated image.

Imaging apparatus, control method for an imaging apparatus, and program

The ophthalmologic apparatus includes: a scanning unit that scans a fundus of an eye to be inspected with measurement light; a selecting unit that selects one imaging mode out of a first imaging mode and a second imaging mode which is different from the first imaging mode; an acquiring unit that acquires information which indicates a movement amount of the eye to be inspected, based on a plurality of planar images of the fundus; and a correcting unit that corrects a scanning position of the measurement light in an initial scan which is executed after the information indicating the movement amount has been acquired, in the first imaging mode, and corrects the scanning position of the measurement light in an initial scan included in an initial scanning group which is executed after the information indicating the movement amount has been acquired, in the second imaging mode.

Ophthalmologic apparatus and imaging method

The present invention reduces a positional displacement of an acquired image attributable to a delay from the issuance of a drive instruction to a scanner to the scanner actually reaching an instructed drive position. An ophthalmologic apparatus has a light scanning unit which scans measuring light on an eye to be examined, an acquisition unit which receives light reflected from the eye to be examined and acquires a light receiving signal, and an instruction unit which instructs the drive position of the light scanning unit. The apparatus further includes a position detection unit which detects the current position of the light scanning unit and a measurement unit which measures the drive time delay from the issuance of an instruction by the instruction until the current position reaches the instructed drive position. The acquisition unit starts acquiring the light receiving signal at timing based on the drive time delay.

Ophthalmologic apparatus and control method thereof

An optical coherence tomographic imaging apparatus includes a movement amount acquisition unit configured to acquire the amount of subject's eye movement based on a plurality of images of the subject's eye acquired at different times, a determination unit configured to determine whether the amount of subject's eye movement before a scan by the scanning unit exceeds a threshold value, and a control unit configured to, in a case the amount of subject's eye movement before the scan is equal to or smaller than the threshold value, control the scanning unit to perform scanning position correction between a scan and the next scan based on the amount of movement.

Optical coherence tomographic imaging apparatus and method for controlling the same

Provided is an ophthalmologic apparatus capable of executing accurate automatic alignment even for an eye having an intraocular lens (IOL) implanted therein. The ophthalmologic apparatus includes: an optical system including a light beam projecting unit for projecting a light beam to an eye to be inspected, and a light receiving unit for receiving a reflection light beam from the eye to be inspected; a detecting unit for detecting a plurality of bright spot images from the reflection light beam received by the light receiving unit; and a calculating unit for calculating an alignment status between the eye to be inspected and the optical system based on the detected plurality of bright spot images. The ophthalmologic apparatus is further provided with a selection unit for selecting bright spot images to be used for the calculation by the calculating unit, from among the plurality of bright spot images.

Ophthalmologic apparatus and alignment method

An ophthalmologic apparatus includes an acquisition unit configured to acquire information about a pupil of a subject's eye, and a control change unit configured to change a method of fogging control for moving a fixation target image away from the subject's eye according to the information acquired by the acquisition unit.

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Kawasaki, Japan

Wataru Sakagawa