Patent ID: 8073323

Claim:
An attachment for use with a visual presenter, which connects an eyepiece lens tube of a microscope and an imaging lens tube of a visual presenter including a base, a pillar standing on the base and a camera head mounted on a distal end of the pillar and including an imaging lens tube protruding from the camera head, the attachment comprising: a cylindrical part which has an upper end face and a lower end with an opening and is loosely fittable through said opening with the eyepiece lens tube; a circular receiving surface which is formed on the upper end face of the cylindrical part and which a distal end of the imaging lens abuts, the receiving surface having a through hole formed in the center thereof and an outer circumferential edge; an indication line which is formed on the receiving surface and indicates a center of the through hole; a positioning piece standing along a part of the outer circumferential edge of the receiving surface and having an inner circumferential surface with a curvature radius substantially equal to a curvature radius of an outer circumferential surface of the imaging lens tube, the outer circumferential surface of the imaging lens tube abutting the positioning piece, the positioning piece being formed into an arc shape in a plan view; and at least three screw members which are provided so as to be threadingly thrust radially through a circumferential surface of the cylindrical part into the cylindrical part, the screw members being arranged equiangularly.