| 主权项 |
1. A sample observation device comprising:
an illumination optical system; and an observation optical system, wherein the illumination optical system includes alight source, a condenser lens, and an aperture member, the observation optical system includes an objective lens and an imaging lens, the aperture member has a light-shielding part or a darkening part, and a transmission part, the transmission part is disposed asymmetrically with respect to an optical axis of the illumination optical system, an image of an inner edge of the transmission part is formed inside of an outer edge of a pupil of the objective lens, an image of an outer edge of the transmission part is formed outside of the outer edge of the pupil of the objective lens, and the transmission part is a transmission part that has a bow shape defined by a straight line on a side closer to the optical axis and an arc on a side away from the optical axis. |
