Patent ID: 6268958
Filing Date: 2001-07-31
Classification: G02B

Abstract:
A microscope comprising:an objective lens change unit to which a plurality of objective lenses are attachable and which disposes said objective lenses selectively on an observation optical path of said microscope;a first objective lens holding member which holds a first of said objective lenses to said objective lens change unit;a second objective lens holding member which holds a second of said objective lenses to said objective lens change unit, a working distance of said second objective lens being shorter than that of said first objective lens;an objective lens moving mechanism which moves at least one of said first and second objective lenses relative to said objective lens change unit in an optical axis direction of said one objective lens;at restricting member carried by said change unit and disposed in a movement path of a movable member of said moving mechanism to engage said movable member and thereby restrict said one objective lens from moving beyond a closest approach position thereof to an observation sample relative to said change unit; andan adjusting mechanism which adjusts a position of said restricting member relative to said movement path to change said closest approach position relative to said change unit.