Abstract: Provided is an optical scanning observation apparatus including: a light source unit (30) for outputting laser light; a scanning part (23) for scanning, on an object of observation (70), a condensing position of the laser light output from the light source; and a detection unit (40) for sampling signal light obtained through scanning of the laser light, and converting the signal light into an electric signal, in which a sampling time for detecting signal light per one sampling is varied in accordance with changes in scanning rate of the scanning part (24) scanning on the object of observation (70). In this manner, variation in resolution of an image resulting from changes in scanning rate per each sampling can be reduced.

Abstract: An endoscope has an insertion portion inserted through a living body, an illumination fiber arranged at a distal end of the insertion portion and irradiates the living body with illumination light, a detection fiber which detects return light from the living body, an actuator which swings a free end of the illumination fiber, and a ferrule which has a through-hole based on a diameter of the illumination fiber and is arranged between the illumination fiber and the actuator. The actuator has an actuator arranged at a first side face of the ferrule and an actuator arranged at a second side face of the ferrule that is different from a face point-symmetric to the first side face with respect to an axial direction of the illumination fiber.

Abstract: An optical scanning device includes an optical fiber, a holding member cantilevering the optical fiber, a first driving device placed on the distal end of the optical fiber and making the optical fiber vibrate in a first direction, and a second driving device placed between the holding member for the optical fiber and the first driving device and making the optical fiber vibrate in a second direction which crosses the first direction.

Abstract: A microscope illumination device comprising: a light source; an objective for illuminating a specimen; a collector lens for converting light from the light source into parallel light; a fly-eye lens placed near to rear focal point of the collector lens; an epi-illumination projection lens for projecting light source images generated by the fly-eye lens onto the objective pupil; a tube lens for imaging an observation light from the objective; and a fluorescence cube placed between the objective and projection lens and comprised a filter, satisfies the expression ?2*ffly*D<?*ffly*??h*p, where ? is defined as the magnification of the projection lens, ffly as the focal distance of the fly-eye lens, D as the effective diameter of the fly-eye lens, ? as the effective diameter of the filter, h as the distance between the filter and the pupil, and p as the pitch of the fly-eye lens.

Abstract: A microscope illumination device comprising: a light source; an objective for illuminating a specimen; a collector lens for converting light from the light source into parallel light; a fly-eye lens placed near to rear focal point of the collector lens; an epi-illumination projection lens for projecting light source images generated by the fly-eye lens onto the objective pupil; a tube lens for imaging an observation light from the objective; arid a fluorescence cube placed between the objective arid projection lens and comprised a filter, satisfies the expression ?2*ffly*D<?*ffly*??h*p, where ? is defined as the magnification of the projection lens, ffly as the focal distance of the fly-eye lens, D as the effective diameter of the fly-eye lens, ? as the effective diameter of the filter, h as the distance between the filter and the pupil, and p as the pitch of the fly-eye lens.

Abstract: The illumination apparatus of microscopes comprises a collector lens for converting diversion light emanated from a light source into parallel luminous flux; a fly eye lens arranged near a backside focal position of the collector lens; and a vertical illuminator which projects two or more light source images formed by the fly eye lens on the incidence pupil of an objective lens. It is characterised in that it has a regulation means by which a diameter of luminous flux between the collector lens and the fly eye lens is changed according to selection of the objective lens.

Abstract: The measuring device according to the present invention has a support on which cells to be observed are arranged, an imaging lens that forms an image of reflected light reflected from the cells at an image capturing position as a result of being irradiated with excitation light, and a photoelectric conversion sensor arranged at the image capturing position that converts the formed images of reflected light into images of the cells. The images of the cells captured according to first optical image capturing conditions are analyzed, second optical image forming conditions are determined corresponding to the results of that analysis, and subsequent images of the cells are captured when a predetermined amount of time has elapsed according to the second optical image capturing conditions.