Abstract: There is provided a retention mechanism for an immersion medium, for use in a device which observes/measures a sample by use of an immersion objective lens, includes a member which retains the immersion medium near a tip portion of the objective lens, wherein the member is configured to include at least first and second materials.

Abstract: There is provided a retention mechanism for an immersion medium, for use in a device which observes/measures a sample by use of an immersion objective lens, includes a member which retains the immersion medium near a tip portion of the objective lens, wherein the member is configured to include at least first and second materials.

Abstract: An illumination apparatus that includes a plurality of LEDs of different center emission wavelengths, a photodetector, a path sharing device for introducing light emitted from the plurality of LEDs into the common optical path, a light-introducing device located on the common optical path to introduce part of the light emitted from the plurality of LEDs passing through the common optical path into the photodetector, a feedback controller controlling turning-on states of the LEDs over preset states in accordance with the amount of light emitted from the plurality of LEDs detected by the photodetector, and an illumination light supplying device located on the common optical path to supply light which is emitted from the plurality of LEDs to pass through the common optical path and is not introduced into the photodetector through the light-introducing device, as illumination light for a cellular analysis.

Abstract: There is provided a retention mechanism for an immersion medium, for use in a device which observes/measures a sample by use of an immersion objective lens, includes a member which retains the immersion medium near a tip portion of the objective lens, wherein the member is configured to include at least first and second materials.

Abstract: An observation apparatus for observing an observation object mounted at an observation position on a stage through an immersion objective lens placed below the observation object. The observation apparatus has a liquid pouring device, constructed to be relatively movable with respect to the immersion objective lens, pouring a liquid on a top lens surface of the immersion objective lens from the upper side of the immersion objective lens at a distance from the observation position on the stage; and a position control device automatically adjusting relative positions of a liquid pouring position of the liquid pouring device and the immersion objective lens and automatically adjusting relative positions of the immersion objective lens on which the liquid is poured by the liquid pouring device and a desired observation position on the stage.

Abstract: A box-type microscope apparatus includes a stage, a microscope, and a housing, which has a fixed housing and a moving housing provided to be openable, closable, and movable with respect to the fixed housing. The box-type microscope apparatus further includes a specimen vessel positioning device for fixing the specimen vessel placed on the stage at a constant position. of the stage and a positioning release device for actuating the specimen vessel positioning means when the moving housing is moved toward a position of a closed state to release a positioning of the specimen vessel performed by the specimen vessel positioning device with respect to the stage when the moving housing is opened.

Abstract: A box-type motor-operated microscope has a motor-operated microscope section having a transmitting illumination optical system, an electric stage, and an image forming optical system; and a housing. The housing includes a fixed housing and a moving housing. The moving housing is movable parallel to an oblique direction with respect to the fixed housing while holding optical elements arranged above the electric stage so that the specimen vessel placed on the electric stage is made replaceable, the motor-operated microscope section is sealed and light-blocked in cooperation with the fixed housing, and the optical axis of the transmitting illumination optical system is practically aligned with that of the image forming optical system.

Abstract: An observation apparatus comprises a thermoregulation mechanism including a liquid receiving frame (28) that has a heater (43) for heating the outer frame of an immersion objective lens (13) and adapted to heat and maintain the temperature of the immersion liquid (30) contained in the frame (28) by means of the heater (43) and via the outer frame of the immersion objective lens (13) so as to maintain the temperature of the specimen (34) in the container at a constant level by utilizing heat conduction. The thermoregulation mechanism of the observation apparatus is so adapted that, when the temperature of the immersion liquid (30) decreases during a measurement/observation operation due to discharge of heat, the liquid (30) is heated again by the heater (43) to prevent the temperature of the specimen (34) from changing and maintain the temperature at a constant level.

Abstract: An immersion objective lens includes a front lens, a lens frame which supports the front lens, and a liquid preventive frame which is attached around the lens frame. The liquid preventive frame includes a liquid bulb holding wall which holds a liquid supplied onto the front lens. A distal end of the liquid bulb holding wall is located more inner in the front lens in a direction parallel to a center axis of the front lens than a distal end face of the front lens.

Abstract: A method of imaging fluorescence, in which an inverted fluorescence imaging apparatus provided with an immersion objective is used to image an observation phosphor for a constant term, includes an imaging position locating step of locating a vessel incorporating the observation phosphor at an imaging position of the fluorescence imaging apparatus; a liquid pouring step of pouring a preset amount of liquid between a top portion of the immersion objective in the fluorescence imaging apparatus and the vessel to bring about a charged state; an imaging step of imaging the observation phosphor in the vessel in a state where a space between the top portion of the immersion objective and the vessel is charged with the liquid; and a repeated control step of repeating a series of operations including the liquid pouring step of a single operation and the imaging step of a preset number of times of operations performed after the liquid pouring step of the single operation, at preset time intervals.

Abstract: A device driving a corrector ring of a corrector ring mounting objective lens mounted to an objective mounting and dismounting section of a revolver includes a rotation driving mechanism having a motor and a turning effort transmitting section which transmits a turning effort of the motor to the corrector ring of the corrector ring mounting objective lens mounted to the revolver to drive the corrector ring; and a connection unit for connecting the turning effort transmitting section to the corrector ring of the corrector ring mounting objective lens introduced into an observation optical path in association with a switching operation performed by the revolver and disconnecting the turning effort transmitting section from the corrector ring of the corrector ring mounting objective lens removed from the observation optical path.

Abstract: A box-type microscope apparatus includes a stage, a microscope, and a housing, which has a fixed housing and a moving housing provided to be openable, closable, and movable with respect to the fixed housing. The box-type microscope apparatus further includes a specimen vessel positioning device for fixing the specimen vessel placed on the stage at a constant position. of the stage and a positioning release device for actuating the specimen vessel positioning means when the moving housing is moved toward a position of a closed state to release a positioning of the specimen vessel performed by the specimen vessel positioning device with respect to the stage when the moving housing is opened.

Abstract: An illumination apparatus for a cellular analysis apparatus includes a plurality of LEDs of different center emission wavelengths, a photodetector, a path sharing device for introducing light emitted from the plurality of LEDs into the common optical path, a light-introducing device located on the common optical path to introduce part of the light emitted from the plurality of LEDs passing through the common optical path into the photodetector, a feedback controller controlling turning-on states of the LEDs over preset states in accordance with the amount of light emitted from the plurality of LEDs detected by the photodetector, and an illumination light supplying device located on the common optical path to supply light which is emitted from the plurality of LEDs to pass through the common optical path and is not introduced into the photodetector through the light-introducing device, as illumination light for a cellular analysis.

Abstract: A box-type motor-operated microscope has a motor-operated microscope section having a transmitting illumination optical system, an electric stage, and an image forming optical system; and a housing. The housing includes a fixed housing and a moving housing. The moving housing is movable parallel to an oblique direction with respect to the fixed housing while holding optical elements arranged above the electric stage so that the specimen vessel placed on the electric stage is made replaceable, the motor-operated microscope section is sealed and light-blocked in cooperation with the fixed housing, and the optical axis of the transmitting illumination optical system is practically aligned with that of the image forming optical system.

Abstract: A device driving a corrector ring of a corrector ring mounting objective lens mounted to an objective mounting and dismounting section of a revolver includes a rotation driving mechanism having a motor and a turning effort transmitting section which transmits a turning effort of the motor to the corrector ring of the corrector ring mounting objective lens mounted to the revolver to drive the corrector ring; and a connection unit for connecting the turning effort transmitting section to the corrector ring of the corrector ring mounting objective lens introduced into an observation optical path in association with a switching operation performed by the revolver and disconnecting the turning effort transmitting section from the corrector ring of the corrector ring mounting objective lens removed from the observation optical path.

Abstract: An observation apparatus for observing an observation object mounted at an observation position on a stage through an immersion objective lens placed below the observation object. The observation apparatus has a liquid pouring device, constructed to be relatively movable with respect to the immersion objective lens, pouring a liquid on a top lens surface of the immersion objective lens from the upper side of the immersion objective lens at a distance from the observation position on the stage; and a position control device automatically adjusting relative positions of a liquid pouring position of the liquid pouring device and the immersion objective lens and automatically adjusting relative positions of the immersion objective lens on which the liquid is poured by the liquid pouring device and a desired observation position on the stage.

Abstract: A method of imaging fluorescence, in which an inverted fluorescence imaging apparatus provided with an immersion objective is used to image an observation phosphor for a constant term, includes an imaging position locating step of locating a vessel incorporating the observation phosphor at an imaging position of the fluorescence imaging apparatus; a liquid pouring step of pouring a preset amount of liquid between a top portion of the immersion objective in the fluorescence imaging apparatus and the vessel to bring about a charged state; an imaging step of imaging the observation phosphor in the vessel in a state where a space between the top portion of the immersion objective and the vessel is charged with the liquid; and a repeated control step of repeating a series of operations including the liquid pouring step of a single operation and the imaging step of a preset number of times of operations performed after the liquid pouring step of the single operation, at preset time intervals.

Abstract: An optical measurement apparatus which includes at least one each of a light source, an optical element, a photodetector, and a sample container, and which measures a physical property of a biological sample in a solution retained by the sample container according to a plurality of kinds of measurement items, wherein a combination of the light source, the optical element, and the photodetector is selected or changed according to the measurement item, and a position where the photodetector is located is adjusted according to the selection or change based on intensity of light accepted by the photodetector.

Abstract: An observation apparatus comprises a thermoregulation mechanism including a liquid receiving frame (28) that has a heater (43) for heating the outer frame of an immersion objective lens (13) and adapted to heat and maintain the temperature of the immersion liquid (30) contained in the frame (28) by means of the heater (43) and via the outer frame of the immersion objective lens (13) so as to maintain the temperature of the specimen (34) in the container at a constant level by utilizing heat conduction. The thermoregulation mechanism of the observation apparatus is so adapted that, when the temperature of the immersion liquid (30) decreases during a measurement/observation operation due to discharge of heat, the liquid (30) is heated again by the heater (43) to prevent the temperature of the specimen (34) from changing and maintain the temperature at a constant level.

Abstract: An objective having an apical lens and a lens frame which supports the apical lens, includes an elastic member which supports the lens frame by exerting a bias force in a central axial direction of the apical lens, and an apex of the lens frame has a convex portion which projects outward in the central axial direction more than an apical surface of the apical lens.