Canon Kabushiki Kaisha

Isao Matsumura

Yoshimi Kohayakawa

Haruhisa Madate

Kazunobu Kobayashi

Shigeo Maruyama

Yasuyuki Ishikawa

Kyoji Sekiguchi

Reiji Hirano

Takashi Masuda

Yukitsugu Nakamura

Yoshimasa Hamano

Shinichi Ohta

Yoshito Yoneyama

Koichi Yano

Takeshi Kuwayama

Kenichi Kashiwagi

A medical-instrument service providing system receives an online order for a medical instrument via a communication network from a service utilizing terminal of a medical institution, accesses a stock control server controlled by a supplier of the medical instrument, to check whether or not the on-order medical instrument is in stock in the supplier. If the on-order medical instrument is in stock in the supplier, the system instructs to deliver the medical instrument to the medical institution. If the on-order medical instrument is insufficient in stock, the system accesses a stock control server, controlled by other institution than the medical instrument, to check whether or not the instrument is in stock, via the communication network. If the on-order medical instrument is in stock, the system instructs to supply the medical instrument to the medical institution from the other institution.

Medical instrument control system

An ophthalmic measuring device for obtaining three-dimensional information of an eye to be examined without time lag by projecting pulsed light chirped in such a manner that color is continuously changed from the leading end through the tail end of a pulsed light with time on the eye to be examined, cutting out the pulsed light reflected from the eye to be examined at a predetermined timing by a shutter, and obtaining spectroscopic distribution characteristic of the cut-out image by a spectroscopic unit.

Ophthalmic measuring device

An ophthalmologic apparatus can measure the eye axis length of an eye to be examined and other information of the eye to be examined (for example, the cornea refractive power). In the case of the measurement of the eye axis length, when moving a detecting terminal itself by driving means, the driving means is controlled so as to slow down the speed of movement of the detecting terminal when the detecting terminal comes near the cornea of the eye to be examined.

Ophthalmologic apparatus

A perimeter has a predetermined index to be projected onto a fundus of an eye to be examined and an index projection imaging optical system which can form an intermediate image of the index in front of the eye. An optical system as being at least a part of the index-projection imaging optical system, is movable to displace the position of the index image on the fundus of the eye. The index-projection imaging optical system has an image forming section which moves the intermediate image in the direction of the optical axis.

Perimeter

A supersonic ophthalmic measuring apparatus includes a supersonic probe for contacting the cornea of an eye to be examined. A calculator for calculating the amount of depression of the cornea of the eye to be examined caused by the supersonic probe, and a corrector for correcting the result of the measurement of the eye axis length of the eye to be examined by the supersonic probe by the amount of depression.

Supersonic ophthalmic measuring apparatus

An ophthalmologic apparatus characterized by the provision of a device for introducing thereinto an eye fundus image at a point in time earlier than the point in time of view field measurment, a device for measuring the field of view of an eye to be examined, and a device for superposing the introduced eye fundus image and the output of the view field measuring a device, one upon the other, and compounding them.

Ophthalmologic apparatus and method of compounding the image of an eye

A slit illuminating apparatus in which slit illuminating light beams can be simply applied to an eye to be examined from different directions of application at a time or with lapse of time.

Slit illuminating apparatus

The corneal reflection virtual image of an index mark for cornea shape measurement is displaced by a variation in the working distance, but a light beam regulating device for extracting the corneal reflection light whose principal light ray is a light ray corresponding to the direction of displacement thereof is provided at a particular position in a cornea shape measuring optical system to thereby eliminate any measurement error based on the variation in the working distance. When a different region of the cornea is to be measured with the index mark displaced in the direction of the optic axis, a predetermined principal light ray conforming to the position of the index mark in the direction of the optic axis is caused to enter the light beam regulating device.

Device for use with a cornea shape measuring apparatus

An ophthalmic examining apparatus which is provided with at least non-contact type eye pressure measuring means and eye fundus observation means for observing the fundus of an eye to be examined and which is capable of examining glaucoma from eye pressure information and eye fundus image information.

Ophthalmic examining apparatus and method capable of examining glaucoma

A cornea shape measuring apparatus which is provided with first and second substantially ring-like index marks disposed at different positions in the direction of the optic axis and projected onto the cornea of an eye to be examined and in which the corneal reflection images of the first and second index marks are detected by a first position detector and the shape of the cornea is measured without depending on the working distance.

Cornea shape measuring apparatus

A surface examining apparatus in which a surface to be examined is scanned by a light, whereby scanning position information, depth information and reflected light amount information are obtained and at least the image of the surface to be examined is displayed on the basis of such information.

Surface examining apparatus

An ophthalmic positioning apparatus has: an optical index projection system for projecting a positioning index onto the cornea of an eye to be examined; and optical focusing system for forming a cornea-reflected image of the positioning index on a predetermined focusing plane; an observing device for observing the cornea-reflected image of the positioning index which is formed on the predetermined focusing plane; and a moving device for moving the optical index projection system, the optical focusing system, and the observing device along at least an operation distance adjustment direction; the positioning index being adapted to allow an observer to identify an inverted state of an index image through the observing device when the positioning index is projected onto a surface position of the cornea of an eye and onto a central position of the curvature of the cornea.

Ophthalmic positioning apparatus

A stereoscopic microscope including a stereoscopic optical system for observing an object under examination, an index projected on the object, a light-receiving unit for receiving an image of the index reflected by the object, an image variable magnification unit for changing the size of the reflected image on the light-receiving unit, a variable magnification detection unit for detecting the magnification set by the image variable magnification unit, and an operation unit for calculating a curved shape of the object from data from the detection unit and data from the light-receiving unit.

Stereoscopic microscope

Disclosed is an ophthalmic instrument provided with an illuminating system for illuminating an eye being examined, an imaging system for imaging a predetermined portion of the eye being examined at a predetermined image plane position, and a detecting system for detecting any variation in the reflected light from the front-eye-part of the eye being examined by a nictitation of the eye being examined without depending on the quantity of illuminating light of the illuminating system.

Ophthalmic instrument

A stereoscopic microscope comprises a first index to be projected to a cornea of an eye under inspection, a pair of observation optical systems for observing a reflected image from the cornea to which the first index is projected, and a second reference index to be observed by the observation optical systems.

Growing community of inventors

Yokosuka, Japan

Isao Matsumura