Abstract: A measuring optical system of an ophthalmologic observation apparatus of an embodiment performs OCT of an eye. An image forming part forms an image based on information acquired by OCT. A preliminary operation performing part performs a plurality of preliminary operations for OCT. Storage stores, for at least one specific preliminary operation among the plurality of preliminary operations, operating condition information including a transferring condition for transferring to a different preliminary operation and a terminating condition for terminating a specific preliminary operation in advance.

Abstract: An ophthalmologic apparatus of an embodiment includes a focusing indicator projector, a fundus imaging unit, a driver, and a focusing controller. The focusing indicator projector is configured to irradiate light fluxes for projecting a pair of focusing indicators onto a fundus of an eye. The fundus imaging unit is configured to capture an image of the fundus. The driver is configured to move an optical system including the focusing indicator projector, the fundus imaging unit, and a focusing lens. The focusing controller is configured to move the focusing lens based on projection images of the focusing indicators captured by the fundus imaging unit, wherein the projection images are captured along with movement of the optical system by the driver.

Abstract: Provided is a slit lamp microscope capable of controlling irradiation of slit light and background illumination light interlockingly. Embodiment includes a main illumination system, background illumination system, observation system and controller. The main illumination system includes a first light source unit that outputs first light and slit forming unit that forms a slit with changeable width, and illuminates an eye with the first light having passed through the slit. The background illumination system includes a second light source unit that outputs second light, and illuminates a peripheral area of an eye area irradiated with the first light. The observation system includes an eyepiece lens, imaging device, and group of optical elements that guides reflected light of the first light and reflected light of the second light from the eye to the eyepiece lens and imaging device. The controller interlockingly controls the main illumination system and second light source unit.

Abstract: An optical system of an ophthalmologic imaging apparatus of embodiment splits light from a first light source into measurement light and reference light and detects interference light of returned light of measurement light from an eye and reference light. An image forming part forms an image based on detection result from the optical system. The optical unit includes a lens and joining member. The lens is locatable in an optical path of measurement light and used for changing a focus position of measurement light from a first site of the eye to second site. The joining member joins an optical path from a second light source to the optical path of measurement light. The optical unit converges light from the second light source having been guided into the optical path of measurement light by the joining member on an eye fundus via the lens.

Abstract: According to one embodiment, a data processing method is used for processing collected data acquired with respect to each A-line by swept-source OCT using a wavelength sweeping light source having a predetermined wavelength sweeping range. The data processing method detects a reference signal assigned in advance to a clock, the wavenumber of which linearly varies along the time axis, in a predetermined wavelength position within the predetermined wavelength sweeping range. Then, the data processing method sequentially performs sampling of the collected data based on the clock with reference to the predetermined wavelength position where the reference signal detected is assigned. Further, the data processing method forms an image of a corresponding A-line based on the sampled collected data.

Abstract: An ophthalmological microscope system, having an illumination system that projects illumination light onto a subject's eye. A light receiving system guides returning light of the illumination light to an image sensor or an eyepiece system. An interference optical system splits light into measurement light and reference light and detects interference light generated from returning light of the measurement light and the reference light. A designation unit is used for designating an operation mode. When an observation priority mode (or an OCT priority mode) has been designated, a controller executes first light amount control that restricts light amount of the measurement light (or second light amount control that restricts light amount of the illumination light) to make total light amount of the illumination light and the measurement light equal to or less than a predetermined value.

Abstract: An illumination system for projecting illumination light onto an eye. A left (right) light receiving system includes a left (right) objective lens and left (right) image sensor, and guides returning light of the illumination light to the left (right) image sensor via the left (right) objective lens. The objective optical axes of the left and right light receiving systems are disposed nonparallelly to each other. A projection system includes a projection system objective lens, and projects light onto the eye via the projection system objective lens. An optical scanner is used for scanning the eye with the light from the projection system. A deflection member is disposed near the objective optical axes, disposed in the optical path of the projection system between the optical scanner and the projection system objective lens, and deflects the optical path.

Abstract: The invention provides an automatic leveling device comprising; one tilt sensor provided on a leveling base plate, a leveling mechanism unit capable of tilting the leveling base plate in at least two directions and a control device for controlling the leveling mechanism unit and for tilting the leveling base plate, wherein the control device is configured to tilt the leveling base plate so that the tilting of the leveling base plate follows a searching route as set in a process of a leveling from a condition where a tilt detecting signal from the tilt sensor is not obtained, carries out an auxiliary leveling to obtain signals from the tilt sensor in a process of changing the tilting, and carries out a main leveling by controlling the leveling mechanism unit based on the detection result from the tilt sensor where a tilt detecting signal is obtained from the auxiliary leveling.

Abstract: An illumination system of an ophthalmologic microscope system projects illumination light onto a patient's eye. A light receiving system guides returning light of the illumination light to an image sensor. A display controller controls a display device to display an image obtained by the image sensor. A magnification changing unit changes display magnification of the image. An interference optical system detects interference light generated from returning light of measurement light from the eye and reference light. An optical scanner is used to scan the eye with the measurement light. An OCT data generation unit processes a detection result of the interference light to generate data. A condition setting unit sets a projection condition of the measurement light in accordance with change in the display magnification. An OCT controller controls the interference optical system and/or the optical scanner based on the projection condition.

Abstract: An electronic distance meter includes an optical unit which emits light to a target object and receives the light reflected by the target object with a light receiving element, a measuring unit which calculates a length of round-trip time taken for the light to make a round trip to the target object and measures a distance to the target object according to the round-trip time of the received light, a light receiving system which receives and condenses the light reflected by the target object, and an optical guide which guides the light condensed by the light receiving element to the light receiving system, including a multi-mode graded index fiber and a multi-mode step index fiber coupled with each other.

Abstract: To provide a measuring system for guiding a worker to a pile driving point by utilizing a measuring device for performing a distance measurement and an angle measurement by automatic guiding and a controller. The measuring system includes a measurement pole 50 equipped with a prism 52, a measurement device 2 having an automatic guiding function, a memory section 30L, a display section 30G displaying a guiding map, an imaging optical system 30E, and a controller 30C having a transceiver 30D, calculates a difference between present position information and a pile driving point position information, calculates a moving direction of the prism 52 from the current position information and previous position information by the imaging optical system 30E, and when these moving directions are different, calculates a gradient component ? of the controller 30C, and displays a guiding map by amended spaced-apart components ?x?, ?y? amended by the gradient components.

Abstract: Light with a short pulse width is emitted using a simple structure. A light source 101, a differentiation circuit 102, and a switch 103 are connected in series. When the switch 103 is switched on, inrush current flows in a capacitor 102b forming the differentiation circuit 102, and accordingly the light source 101 is supplied with electric current and thereby emits light. When the capacitor 102b is charged, electric current flows in a resistor 102a, and voltage drops at the resistor 102a. Then, the voltage applied to the light source 101 is decreased, whereby the light source 101 stops emitting light. By using the inrush current at the capacitor 102b, light with a short pulse width can be generated.

Abstract: An ophthalmologic apparatus which is capable of preferably executing position matching between an eye and optical system is provided. An ophthalmologic apparatus of an embodiment includes an examination optical system, supporting part, driver, two or more imaging parts, analyzer and controller. The examination optical system is used for an examination of the eye. The supporting part supports a face of a subject. The driver moves the examination optical system and the supporting part relatively and three-dimensionally. The two or more imaging parts substantially simultaneously photograph an anterior eye part of the eye from different directions. The analyzer obtains a three-dimensional position of the eye by analyzing two or more photograph images acquired by the two or more imaging parts substantially simultaneously. The controller controls the driver based on the three-dimensional position to relatively move the examination optical system and the supporting part.

Abstract: Methods and systems for angiographic imaging with optical coherence tomography (OCT) are described using ratio-based and angiographic deviation based calculations. In using these calculations to determine motion, arbitrary interframe permutations may be used, post-calculated, non-linear results for projection visualization may be averaged, poor matches may be eliminated on an A-line by A-line basis, windowing functions may be used to improve results, partial spectrums may be used when capturing data, and a minimum intensity threshold may be used for determining which pixels to use.

Abstract: An early detection method for preventive medicine for eye disease. A server of an ophthalmic examination support system includes a medical information storage apparatus and a management apparatus. A plurality of clients each capable of communicating with the management apparatus. An association information storage unit for storing association information between predetermined medical information items and ophthalmic examination conditions. An examination condition obtaining unit for obtaining an examination condition associated with the medical information corresponding to patient information. A controller of the client to execute control based on the obtained examination condition. A controller of the management apparatus to receive medical information including examination data of a patient's eye transmitted together with patient information, and to store the medical information in the medical information storage apparatus.

Abstract: A processing for specifying a correspondence relationship of feature points between two sets of optical data can be highly precise and efficiently carried out. The correspondence relationship of the perpendicular edges is obtained based on the assumption that the object is a building, in the processing for integrating the three-dimensional model obtained from the point cloud position data and the three-dimensional model obtained from the stereophotographic image. In this case, one perpendicular edge is defined by the relative position relationship with the other perpendicular edge, and the correspondence relationship is high-precisely and rapidly searched.

Abstract: Safety of ophthalmologic laser treatment is improved. A laser treatment apparatus of an embodiment includes: a photographing system that photographs an eye; an irradiation system that irradiates aiming light of a preset pattern and treatment laser light onto a fundus of the eye; an irradiation-pattern determining part that determines an irradiation pattern of the treatment laser light based on a photograph image of the eye acquired by the photographing system and the preset pattern; and a controller that controls the irradiation system so as to irradiate the treatment laser light of the determined irradiation pattern.

Abstract: An ophthalmologic imaging apparatus that includes a first optical system, a first driver, and a first focus controller. The first optical system includes a first focus lens and a diopter correction lens, and guides light from a subject's eye to a first light receiving element. The first focus lens is movable along the optical axis of a first optical path. The diopter correction lens is insertable into and removable from the first optical path. The first driver moves the first focus lens. The first focus controller executes mutually different focus control of the first driver in a removed state in which the first diopter correction lens is removed from the first optical path and in an inserted state in which the diopter correction lens is inserted into the first optical path.

Abstract: An ophthalmic examination support system of an embodiment includes a server and clients. The server includes a medical information storage apparatus that stores medical information on each patient, and a management apparatus that manages the medical information. Each of the clients can communicate with the management apparatus. The system includes an association information storage unit and an examination condition obtaining unit. The association information storage unit stores, in advance, association information in which association between predetermined medical information items and examination conditions of an ophthalmic examination is recorded. The examination condition obtaining unit receives medical information retrieved from the medical information storage apparatus by the management apparatus based on patient information transmitted from one of the clients, and obtains an examination condition corresponding to at least part of the received medical information from the association information.

Abstract: An intraocular lens system according to an embodiment includes a lens, a converter, and a driver. The lens is placed in the lens capsule, and configured to allow at least changes of the focal length. The converter is placed in the lens capsule, transmits part of incident light therethrough, and converts the energy of other part of the light into electrical energy. The driver is placed in the lens capsule, operates with the electrical energy obtained by the converter, and is used to change the focal length of the lens.