Abstract: An illumination system of an ophthalmologic apparatus of an exemplary embodiment projects illumination light from a light source onto the anterior eye segment of a subject's eye. An interference photographing system photographs an interference pattern formed on the cornea by the illumination light. An anterior eye segment photographing system photographs the anterior eye segment onto which the illumination light is being projected. A first optical path coupling element couples the optical path of the interference photographing system and the optical path of the anterior eye segment photographing system with one another.

Abstract: An ophthalmologic apparatus includes: an objective lens that faces a subject's eye; a first illumination optical system that irradiates a cornea of the subject's eye with illumination light; and a corneal measurement optical system having an imaging element that takes an image of a corneal reflection light, which is a reflection of the illumination light, through the objective lens, and outputs an imaging signal. The corneal measurement optical system includes a first mirror arranged near the objective lens and a second mirror arranged near the imaging element. The first and second mirrors and are configured such that the corneal reflection light that enters and is reflected from the first mirror, and then enters and is reflected from the second mirror exits toward an incident side from which the corneal reflection light enters a reflection surface of the first mirror.

Abstract: An ophthalmologic apparatus includes: an ophthalmologic apparatus body having: an objective lens that faces a subject's eye; a first illumination optical system that irradiates a cornea of the subject's eye with illumination light emitted from a first illumination light source along an optical axis overlapping an optical axis center of the objective lens; an interference image capturing camera that takes an image of a corneal reflection light through the objective lens and outputs an imaging signal; and a calculation unit that calculates, based on a corneal reflection image, of a corneal reflection light, input from the interference image capturing camera, a thickness of a tear fluid film at each position on the corneal surface; and a guide rail that supports the ophthalmologic apparatus body.

Abstract: The object of the present invention is to develop an ophthalmologic microscope of a new method that increases the degree of freedom in the optical design in the Galilean ophthalmologic microscope provided with an OCT optical system. The present invention provides an ophthalmologic microscope 1 comprising; an illuminating optical system 300, an observation optical system 400; an objective lens 2; and an OCT optical system 500, characterized in that the optical axis 0-500 of the OCT optical system does not penetrate through the objective lens 2, it comprises objective lens for OCT 507 through which the optical axis 0-500 of the OCT optical system penetrates, and deflection optical elements 503a, 503b for scanning of the OCT optical system and the objective lens for OCT 507 are in a substantially optically conjugate positional relation.

Abstract: An ophthalmologic apparatus of some exemplary embodiments includes an illumination system, interference photographing system, anterior eye segment photographing system, first optical path coupling element, and controller. The illumination system projects illumination light output from a light source, onto the anterior eye segment of a subject's eye. The interference photographing system performs photographing of an interference pattern formed on the cornea by the illumination light. The anterior eye segment photographing system performs photographing of the anterior eye segment onto which the illumination light is being projected. The first optical path coupling element couples the optical path of the interference photographing system and the optical path of the anterior eye segment photographing system with one another.

Abstract: An illumination system of an ophthalmologic apparatus of an exemplary embodiment projects illumination light from a light source onto the anterior eye segment of a subject's eye. An interference photographing system photographs an interference pattern formed on the cornea by the illumination light. An anterior eye segment photographing system photographs the anterior eye segment onto which the illumination light is being projected. A first optical path coupling element couples the optical path of the interference photographing system and the optical path of the anterior eye segment photographing system with one another.

Abstract: The object of the present invention is to develop an ophthalmologic microscope of a new method that increases the degree of freedom in the optical design in the Galilean ophthalmologic microscope provided with an OCT optical system. The present invention provides an ophthalmologic microscope 1, wherein an observation optical system 400, an objective lens 2, and an OCT optical system 500 are placed in such a way that the optical axis of the OCT optical system O-500 does not penetrate through objective lens 2, and the optical axis of the observation optical system O-400 and the optical axis of the OCT optical system O-500 are non-coaxial, and wherein the ophthalmologic microscope further comprises a SLO optical system 1500 that scans a light ray which is a visible ray, a near infrared ray, or an infrared ray and guides the light to the subject's eye so as to become substantially coaxial with the optical axis of the OCT optical system O-500.

Abstract: According to one embodiment, an ophthalmic microscope system includes an illumination system, a pair of light-receiving systems, and an irradiation system. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The irradiation system is configured to irradiate the subject's eye with light different from the illumination light from a direction different from the objective optical axes.

Abstract: According to one embodiment, an ophthalmic microscope includes an illumination system, a pair of light-receiving systems, and a first mechanism. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide return light of the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The first mechanism is configured to move the light-receiving systems relative to each other to change an angle formed by the objective optical axes of the light-receiving systems.

Abstract: According to one embodiment, an ophthalmic microscope includes an illumination system, a pair of light-receiving systems, and a first mechanism. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide return light of the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The first mechanism is configured to move the light-receiving systems relative to each other to change an angle formed by the objective optical axes of the light-receiving systems.

Abstract: According to one embodiment, an ophthalmic microscope system includes an illumination system, a pair of light-receiving systems, and an irradiation system. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The irradiation system is configured to irradiate the subject's eye with light different from the illumination light from a direction different from the objective optical axes.

Abstract: The present invention aims to provide a resin composition for toners which enables to obtain a toner having excellent low temperature fixability and high temperature offset resistance, and a toner. The resin composition for toners is obtained by reacting a mixture of a branched polyester (A) having a number average molecular weight of 2,000 to 7,000 and a hydroxyl value of 20 to 80, and a low molecular weight linear polyester (B) having a number average molecular weight of 2,000 to 5,000 and a hydroxyl number of 20 to 55, with an isocyanate compound containing two or more isocyanate groups in one molecule, which comprises a crosslinked structure of said branched polyester (A), a structure in which said branched polyester (A) and said low molecular weight linear polyester (B) are bonded by said isocyanate compound, and an unreacted portion of said low molecular weight linear polyester (B).

Abstract: A high-purity L-ascorbic acid-2-phosphoric acid potassium crystal having excellent stability, and a method for simply producing the high-purity L-ascorbic acid-2-phosphoric acid potassium in a high yield by adding dropwise a solution containing L-ascorbic acid-2-phosphoric potassium to methanol or simultaneously mixing methanol and a solution containing L-ascorbic acid-2-phosphoric acid potassium. By the production method of the present invention, high-purity L-ascorbic acid-2-phosphoric acid potassium crystal having excellent stability can be simply produced in a high yield. The L-ascorbic acid-2-phosphoric acid potassium crystal obtained by the production method of the present invention is used for feedstuff, cosmetic materials, medical products, food additive and the like.