Patent ID: 7852552
Filing Date: 2010-12-14
Classification: G02B

Abstract:
1. An observation apparatus provided with an immersion objective lens, in which an observation object mounted at an observation position on a stage is observed through the immersion objective lens placed below the observation object, the observation apparatus comprising: liquid pouring means, constructed to be relatively movable with respect to the immersion objective lens and for pouring a liquid on a top lens surface of the immersion objective lens from an upper side of the immersion objective lens at a distance from the observation position on the stage; and position control means for automatically adjusting relative positions of a liquid pouring position of the liquid pouring means 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 means and a desired observation position on the stage, wherein, the liquid pouring means is configured with liquid pouring section for pouring the liquid perpendicular to the top lens surface of the immersion objective lens located at the liquid pouring position, and the liquid pouring means is constructed so that the liquid pouring section is movable together with the stage.