Patent application number | Description | Published |
20080316426 | Fundus camera - A fundus camera having a function of measuring a retinal function, capable of picking up (obtaining) a sharp color image of a fundus suitable for a fundus examination and measuring a retinal function with high accuracy comprises an illumination optical system comprising a visible light source, an image-pickup optical system comprising an image-pickup element, a mode selection switch for performing switching between a fundus photographing mode and a retinal function measurement mode based on variance of an intrinsic signal of a retina made by retinal stimulation, and a control unit which controls the optical systems, wherein the unit lowers, when the retinal function measurement mode is selected, illumination intensity of the illumination optical system per unit time in illuminating the fundus than that in picking up the color fundus image, and controls the element to pick up first and second visible fundus images at different points in time. | 12-25-2008 |
20100277692 | FUNDUS PHOTOGRAPHING APPARATUS - A fundus photographing apparatus includes a first photographing unit arranged to obtain a first fundus image and including a first illumination optical system including a first light source and a scanning unit, a first photographing optical system and a wavefront compensating unit including a wavefront sensor and a wavefront compensating device, a second photographing unit arranged to obtain a second fundus image of a wide area including a scanning area by the scanning unit and including a second illumination optical system and a second photographing optical system arranged to obtain the second fundus image with a wider view angle under lower magnification than the first fundus image, a monitor, and a control unit arranged to display on the monitor the first and second fundus images, and display an indicator on the second fundus image displayed on the monitor, the indicator indicating a photographed portion of the first fundus image. | 11-04-2010 |
20120083667 | METHOD OF OBSERVING A THREE-DIMENSIONAL IMAGE OF EXAMINEE'S EYE - A method of observing a three-dimensional image of an examinee's eye to be examined, includes: obtaining a first three-dimensional image which is a three-dimensional image of an anterior segment of the examinee's eye by optical coherence tomography for obtaining a tomographic image by converging a measurement light on the anterior segment of the examinee's eye; obtaining a second three-dimensional image which is a three-dimensional image of a fundus of the examinee's eye by optical coherence tomography for obtaining a tomographic image by converging the measurement light on the fundus of the examinee's eye by a timing different from a timing of obtaining the first three-dimensional image; constructing a three-dimensional eyeball image of the examinee's eye through image processing based on the obtained first and second three-dimensional images; and displaying the constructed three-dimensional eyeball image on a monitor. | 04-05-2012 |
20120197102 | OPHTHALMIC SURGICAL MICROSCOPE - An ophthalmic surgical microscope comprises: an observation optical system for observing a patient's eye during surgery; a corneal shape measuring unit for measuring a corneal shape of the patient's eye placed in a surgical position; and a controller configured to output guide information for guiding a surgery with an intraocular lens based on a measurement result obtained by the corneal shape measuring unit to an output device. | 08-02-2012 |
20120249957 | OPHTHALMIC PHOTOGRAPHING APPARATUS - An ophthalmic photographing apparatus includes: a first photographing unit for photographing an examinee's eye to obtain a first photography image of the examinee's eye; a second photographing unit for photographing the examinee's eye in a wider area than a photography view angle of the first photographing unit; a photography area setting unit configured to move a photography area, which is photographed by the first photographing unit, relative to the examinee's eye which is photographed by the second photographing unit; a photography position information acquisition unit configured to acquire photography position information of the first photography image of the examinee's eye from the photography area setting unit; and a storage unit configured to store the first photography image and the photography position information acquired by the photography position information acquisition unit in association with each other. | 10-04-2012 |
20120327423 | OPTICAL COHERENCE TOMOGRAPHY APPARATUS - An optical coherence tomography (OCT) apparatus includes: a light source; an OCT optical system including: a first light splitter which splits light emitted from the light source into measurement and reference lights, a second light splitter which splits the measurement light into first and second beams, an optical delay path to generate an optical path length difference between the first and second beams, a scan optical system which scans the respective beams on an object to be examined in a transverse direction, a reference optical system, and a detector which receives a spectrum of composite light in which reflected lights of the first and second beams from the object, and the reference light from the reference optical system are combined; and an arithmetic controller which processes an interference signal output from the detector to obtain first and second tomographic images formed respectively by the first and second beams. | 12-27-2012 |
20130057826 | FUNDUS PHOTOGRAPHING APPARATUS WITH WAVEFRONT COMPENSATION - A fundus photographing apparatus with wavefront compensation, includes: a fundus photographing optical system for capturing a fundus image by receiving a reflected light from fundus of an examinee's eye; a wavefront compensation device placed in an optical path of the fundus photographing optical system to compensate a wavefront aberration of the examinee's eye by controlling an incident light wavefront; a wavefront aberration detection optical system for projecting a measurement light on the fundus of the examinee's eye to detect a reflected light of the measurement light from the fundus using a wavefront sensor; and a controller for controlling an effective region formed on the wavefront compensation device so as to correct a difference between the effective region formed on the wavefront compensation device where an aberration correction control is effective and a wavefront measurement region of the wavefront aberration detection optical system where the wavefront aberration is measured. | 03-07-2013 |
20130107208 | INTRAOCULAR LENS POWER DETERMINATION APPARATUS, INTRAOCULAR LENS POWER DETERMINATION METHOD, AND INTRAOCULAR LENS POWER DETERMINATION PROGRAM | 05-02-2013 |
20140375952 | HAND-HELD OPHTHALMOLOGICAL DEVICE - A hand-held ophthalmological device includes: a main unit having an ophthalmoscopic optical system configured to project ophthalmoscopic light to an examinee's eye and receive reflection light therefrom to examine or measure an examinee's eye; a detector placed in the main unit and configured to detect a relative deviation between an optical axis of the ophthalmoscopic optical system and the examinee's eye; a deviation compensating optical system placed as a part of the ophthalmoscopic optical system and configured to compensate the deviation; and a drive part configured to drive the deviation compensating optical system based on output from the detector. | 12-25-2014 |
20150051591 | OPHTHALMIC LASER SURGICAL APPARATUS - An ophthalmic laser surgical apparatus includes an XY scan unit, a light guiding optical element, an objective lens, and a Z scan unit. The XY scan unit includes a deflecting device for deflecting the pulsed laser beam, and scans the pulsed laser beam in a direction crossing an optical axis. The light guiding optical element is provided downstream of the deflecting device on the optical path of the pulsed laser beam. The light guiding optical element has refractive power, and guides the pulsed laser beam. The objective lens causes the pulsed laser beam through the XY scan unit and the light guiding optical element to converge in a tissue of a patient's eye. The Z scan unit varies the optical path length between the light guiding optical element and the objective lens while the objective lens is fixed in position on the optical path. | 02-19-2015 |